KR101728700B1 - Reinforcement apparatus for earth retaining temporary facility and temporary structure having the same - Google Patents

Abstract

The present invention provides a reinforcement apparatus for a temporary soil retaining facility, comprising: a horizontal beam installed to intersect multiple vertical piles disposed in an excavated retaining wall at constant intervals, so as to be fixated in a wale supporting a soil retaining wall; a pair of arched beams integrally connected on both sides of the horizontal beam and having an arched shape mutually symmetrical with respect to the horizontal beam; a steel wire support part installed in a steel wire support erected from the horizontal beam; a steel wire settling part installed in each arched beam; and a steel wire supported by the steel wire support part, connecting both ends to the steel wire settling part to be settled, and elongated to be pre-stressed. A soil pressure applied to the soil retaining wall is transferred to the arched beam disposed on both sides of the soil retaining wall to be supported and a soil pressure applied to the horizontal beam disposed in the middle of the soil retaining wall is offset by a repulsive force occurring in the steel wire support by the pre-stressed steel wire, such that the soil retaining wall can be supported.

Description

TECHNICAL FIELD [0001] The present invention relates to a reinforcement device for a temporary earth retaining structure and a retention structure including the same. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a temporary retaining structure, more particularly, to an arch retaining structure capable of supporting a earth pressure acting on a wall of a temporary retaining wall by using an arcuate structure and a pre- will be.

Generally, in order to secure the space for constructing the underground part of the building, it is necessary to construct the excavated earth wall to prevent the collapse of the excavated earth wall, that is, the earth surface, where the earth retaining wall can support the applied earth pressure .

In the existing soil erosion, the vertical piles are installed at regular intervals on the excavated soil walls, the wales are arranged across the vertical piles, and a plurality of horizontal struts and corner struts are used to support the earth pressure applied to the portholes .

However, it is difficult to secure the work space due to the installation cost and steel material cost due to the installation of a considerable number of staples. However, it is difficult to supply the equipment and materials when construction or civil structure construction is carried out inside the walls. There is a problem that the construction cost is excessive.

In addition, when the size of the earthquake has increased, it is necessary to additionally provide a strut to support the wall of the long earthquake. When earth pressure or prestress acts as eccentricity, there is a fear of collapse due to loss of dynamic balance of earthquake. Therefore, it is very important to install each structural member on the same horizontal / vertical plane so that an external force does not act eccentrically in the horizontal direction (plane) and the vertical direction (vertical section).

However, in the past, when it is necessary to install a strut in the horizontal direction and a strut in the vertical direction, the strut in one direction crosses the upper or lower position in the strut in the other direction at the portion where the two strut meet, It is impossible to install the member on the plane, which causes the external force to act as an eccentricity, thereby causing a structural unstable state.

Registered Utility Model No. 20-0421810 of Korea Register (Jul. Korean Registered Patent No. 10-1599671 (Mar. 23, 2013)

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to reduce the total amount of steel to support the retaining walls, thereby securing the work space in the underground, And it is an object of the present invention to provide a stiffening apparatus for a stiffening apparatus and a stiffening structure including the same.

It is another object of the present invention to provide a retaining structure capable of supporting a supporting force without eccentricity when the struts in different directions, for example, the transverse direction and the strut in the longitudinal direction cross each other, on the same plane.

According to an aspect of the present invention, there is provided a reinforcement device for a temporary earth retaining structure, comprising: a plurality of vertical files installed at regular intervals on a excavated soil wall and fixed to a wale band supporting the earth retaining wall; Horizontal beam; A pair of arcuate beams integrally connected to both sides of the horizontal beam and having an arch shape symmetrical with respect to the horizontal beam; A wire supporting portion provided on a wire support standing upright on the horizontal beam; A steel wire fixing unit installed in each of the arcuate beams; And a steel wire supported by the steel wire supporting part and connected at both ends to the steel wire fixing part to be fixed and tensioned so as to be pre-stressed, wherein the earth pressure acting on the earth retaining wall is provided on both sides of the retaining wall And the earth pressure acting on the horizontal beam located in the middle of the earth retaining wall can support the earth retaining wall by the reaction force generated in the steel wire support by the prestressed steel wire.

The arcuate beam is formed such that one end thereof is connected to the end of the horizontal beam and the other end thereof is bent away from the earth retaining wall in the direction of the inner wall of the earth wall to be supported on the corner struts of the earth wall. have.

The steel wire supporting portion may include a hydraulic jack provided on the steel wire support; A first base plate fixed to the hydraulic jack; A pair of first support plates which are provided on the first base plate and are parallel to each other with a predetermined gap therebetween and formed with holes vertically penetrating the plate surface; A first support bar inserted in the hole of the first support plate across the pair of first support plates and supporting the steel wire under a compressive force in accordance with the tension of the steel wire; And a support block installed between the first base plate and the first support bar and reinforcing and supporting the compressive force received by the first support bar, wherein a prestress can be applied to the steel wire through the upward movement of the hydraulic jack .

The steel wire fusing unit may further include: a wire line switching unit installed at one side of the arched beam, for switching the steel wire tilted by the wire wire supporting unit in a horizontal direction; And a steel fixing unit installed on the other side of the arched beam in parallel with the steel wire switching unit to fix the steel wire converted in the horizontal direction by the steel wire switching unit.

The steel wire switching unit may include a second base plate fixed to one side of the arched beam, A pair of second support plates which are provided on the second base plate and are parallel to each other with a predetermined gap therebetween and formed with holes vertically penetrating the plate surface; A pair of second support plates which are inserted into the holes of the second support plate across the pair of second support plates and are slantingly supported by the wire support portions so as to support the steel wires passing between the pair of second support plates in a horizontal direction A second support bar; And a pair of U-shaped bolts for fastening the second base plate to the arched beam while supporting both ends of the second support rod outside the second support plate.

The fixed beam may include a fixed beam coupled to one side of the arched beam to be spaced apart from the second base plate and having a predetermined length parallel to the longitudinal direction of the arched beam. A fixing plate coupled to one end of the fixed beam and having a hole through which the steel wire passed through in the horizontal direction by the second support bar is formed; And a fixture for fixing the steel wire passing through the hole of the fixing plate in a state of being stretched.

According to an aspect of the present invention, there is provided a retaining structure for supporting an earth retaining wall, the retaining wall being installed across a plurality of vertical files arranged at regular intervals on excavated soil walls. And a reinforcing device installed on the wale band, wherein the reinforcing device for reinforcing the earth retaining device comprises a bending moment generated by the arch structure of the arched beam and the prestress of the horizontal beam and a earth pressure acting on the earth retaining wall The bending moments caused by the bending moment are canceled each other and the bending moment as a whole becomes zero, so that the earth pressure acting on the earth retaining wall can be stably supported.

In addition, a plurality of reinforcing devices for temporary installation of the earth retaining structure may be installed along the wale, and the adjacent arcuate beams of the earth retaining reinforcing device may be supported by abutting ends thereof.

The earth retaining structure may include: a plurality of struts arranged in a transverse direction and a longitudinal direction at the center of a to-be-excavated earth to support a plurality of the earth retaining reinforcing devices; And an intermediate connection portion provided at an intermediate portion where a plurality of the strands are intersected on the same plane, and one end of the strands is bolted to each other.

The earth retaining structure using the earth retaining reinforcing device of the present invention stably supports the earth pressure acting on the retaining wall by using the arch structure of the arched beam and the pre-stressed structure of the horizontal beam, It is possible to reduce the production cost and the material cost, and the construction period can be shortened.

In addition, by omitting the strut or by significantly reducing the number of struts, it is possible to easily secure the work space, so that it is possible to insert smooth equipment and materials according to the construction of the earthworks or the construction of civil engineering structures.

In addition, when the size of the retention wall is increased, it is necessary to install additional struts in order to support the long strut walls. In the strut connection, the struts and the struts in different directions cross each other So that the struts intersect on the same plane to support the supporting force without eccentricity.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a temporary earth retaining structure according to an embodiment of the present invention; FIG.
2 is a perspective view showing a reinforcement device for a temporary earth retaining structure according to the present invention.
3 is a front view showing a reinforcement device for a temporary earth retaining structure according to the present invention.
4 is a perspective view showing a steel wire support portion of a reinforcement device for a temporary earth retaining structure.
5 is an exploded perspective view of Fig.
6 is a cross-sectional view of Fig.
7 is a perspective view showing a steel wire fixing unit of the reinforcing device for temporary earth retaining.
8 is an exploded perspective view of Fig.
Fig. 9 is a sectional view of Fig. 7; Fig.
10 is a view showing an operating state in which a reinforcement device for supporting the earth retaining structure supports the earth pressure acting on the earth retaining wall in the temporary retaining structure according to the embodiment of the present invention.
11 is a view showing a correlation between a bending moment generated by the reinforcement device for the earth retaining structure and a bending moment generated due to the earth pressure acting on the earth retaining wall in the temporary retaining structure according to the embodiment of the present invention.
12 is a plan view showing a temporary earth retaining structure according to another embodiment of the present invention.
13 is a perspective view of the strut braid intermediate connection portion shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the embodiments described below are provided for illustrative purposes only, and that the present invention may be embodied with various changes and modifications within the spirit and scope of the present invention. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

FIG. 1 is a plan view showing a retention structure according to an embodiment of the present invention. FIG.

As shown in FIG. 1, the temporary retaining structure according to an embodiment of the present invention includes a wale 10, a corner strut 20, and a reinforcement device 30 for a temporary retaining structure. .

The wales 10 are installed across a plurality of vertical files arranged at regular intervals on excavated soil walls to support the earth retaining wall 1. Since the wale band 10 can be understood by a known technique, a detailed description thereof will be omitted.

The corner strut 20 is positioned at each of the four corners of the turntable wall and serves to securely support the wales 10 on both sides of the turntable wall edge.

A plurality of reinforcing devices (30) are installed along the wale band (10). Further, neighboring arcuate beams 200 of the retention prestressing reinforcement 30 may be supported by hydraulic jacks 200a supported at their ends in contact with each other or installed between the arcuate beams 200. The retaining device 30 for supporting the earth retaining structure supports a earth pressure acting on the retaining wall 1 by using an arch structure of the arch beam 200 and a pre-stressed structure of the horizontal beam 100 . The reinforcing device 30 for the earth retaining construction will be described in detail with reference to Figs. 2 to 11. Fig.

FIG. 2 is a perspective view showing a reinforcement device for a temporary earth retaining device according to the present invention, and FIG. 3 is a front view showing a reinforcing device for a temporary earth retaining device according to the present invention.

2 and 3, the reinforcing device 30 for a temporary earth retaining structure according to the present invention includes a horizontal beam 100, an arcuate beam 200, a steel wire supporting part 300, a steel wire fixing part 400, 500).

The horizontal beam 100 is installed across a plurality of vertical files arranged at regular intervals on the excavated soil wall and fixed to the wale 10 supporting the earth retaining wall 1. The horizontal beam 100 is installed in parallel with the wale band 10 and is located in the middle of the earth retaining wall 1. In the present embodiment, the horizontal beam 100 is formed of H-shaped steel. However, the present invention is not limited to the H-shaped steel.

The arcuate beams 200 are configured as a pair so that they are integrally connected to both sides of the horizontal beam 100. The arcuate beam (200) has an arch shape symmetrical to each other with respect to the horizontal beam (100). The arcuate beam 200 is formed such that one end thereof is connected to the end of the horizontal beam 100 and the other end thereof is spaced apart from the earth retaining wall 1 and bent inward of the earth wall. The corner stiffness of the corner stub 20 can be increased. The neighboring arcuate beams 200 of the earth retaining prestressing device 30 at the corner struts 20 of the earth wall are supported by the hydraulic jacks 200a provided between the arcuate beams 200, . In the present embodiment, the arcuate beam 200 is formed of the same H-shaped beam as the horizontal beam 100, but the present invention is not limited to this, and various types of steel may be used in addition to the H-shaped beam.

The wire supporting part 300 is provided at the end of the wire supporting part 301 standing on the horizontal beam 100 to support the middle of the wire 500. At least one or more of the wire support 301 may be installed in the middle portion of the horizontal beam 100, and may be formed in a triangular truss shape. The strand supporting part 300 is a structure that supports the earth pressure acting on the earth retaining wall 1 by transmitting the reaction force induced by the prestress of the steel wire 500 to the earth retaining wall 1. The wire supporting portion 300 will be described later in detail with reference to FIGS. 4 to 6. FIG.

The steel wire fixing part 400 is installed in the arcuate beam 200 on both sides of the horizontal beam 100 and fixes both ends of the steel wire 500 subjected to the prestress by tension. The steel wire fixing unit 400 will be described later in detail with reference to Figs. 7 to 9.

The steel wire 500 is supported by the wire supporting part 300, both ends thereof are connected to the steel wire fixing part 400 and fixed, and are stretched so as to be prestressed. The middle portion of the steel wire 500 is supported by the two wire supporting portions 300 in parallel with the horizontal beam 100 and both side portions of the steel wire 500 are installed inclined toward the arcuate beam 200, As shown in FIG.

FIG. 4 is a perspective view showing a steel wire support portion of a reinforcement device for a temporary earth retaining structure, FIG. 5 is an exploded perspective view of FIG. 4, and FIG. 6 is a sectional view of FIG.

4 to 6, the wire supporting part 300 includes a hydraulic jack 310, a first base plate 320, a first supporting plate 330, a first supporting rod 340, and a supporting block 350 .

The hydraulic jack 310 is installed at the end of the wire support 301 and the prestress is applied to the wire 500 through the upward movement of the hydraulic jack 310. Since the hydraulic jack 310 can be understood as a known technique, a detailed description will be omitted.

The first base plate 320 is formed in the shape of a rectangular plate, is bolted to the hydraulic jack 310, and moves in conjunction with the hydraulic jack 310.

The first support plates 330 are welded in an upright manner on the first base plate 320, and are formed in pairs so as to be parallel to each other at a predetermined interval. The first support plate 330 is formed with a circular hole 331 vertically penetrating the plate surface. In addition, it is preferable that a plurality of reinforcing plates 360 are welded to reinforce the side surfaces of the first base plate 320 and the first support plate 330.

The first support bar 340 is disposed across the two first support plates 330 to support the steel wire 500 as a portion subjected to a compressive force due to the tension of the steel wire 500. The first support bars 340 are formed in a circular bar shape longer than the interval at which the two first support plates 330 are installed and welded through the holes 331 of the first support plate 330. The first support bar 340 is installed to be perpendicular to the installation direction of the steel wire 500 and the steel wire 500 is supported by the curved surface of the first support bar 340 having a circular bar shape, Thereby minimizing damage to the steel wire 500 during movement and allowing the movement due to the tension to proceed smoothly. In addition, lubricant can be applied to the contact surface between the first support bar 340 and the steel wire 500 to minimize damage to the steel wire 500 due to frictional force.

The support block 350 is installed between the first support plates 330 and the first base plate 320 and the first support bar 340 to reinforce and support the compression force received by the first support bars 340. The support block 350 may have a semi-circular support groove 351 formed on the upper surface of the support block 350 so that the lower portion of the first support rod 340 may be inserted into the support groove 351.

FIG. 7 is a perspective view showing a steel wire fixing unit of the retention reinforcement apparatus, FIG. 8 is an exploded perspective view of FIG. 7, and FIG. 9 is a sectional view of FIG.

7 to 9, the steel wire fixing unit 400 may include a steel wire switching unit 410 and a steel wire fixing unit 420.

The wire line switching unit 410 is installed at one side of the arcuate beam 200 and serves to switch the wire 500 which is tilted by the wire supporting unit 300 in the horizontal direction.

The wire line switching unit 410 may include a second base plate 411, a second support plate 413, a second support rod 415, and a U-shaped bolt 417.

The second base plate 411 is formed of a rectangular plate and is fastened and fixed to one side of the fixing portion steel 210 of the arcuate beam 200 with a U-shaped bolt 417.

The second support plates 413 are welded in an upright manner on the second base plate 411 and are configured to be parallel to each other with a predetermined gap therebetween. The second support plate 413 is formed with a circular hole 413a vertically penetrating the plate surface. In addition, it is preferable that a plurality of reinforcing plates 412 are welded and reinforced to the side surfaces of the joints of the second base plate 411 and the second support plate 413.

The second support bar 415 is disposed across the two second support plates 413 and receives a pushing force toward the outside according to the tension of the steel wire 500. Two second support plates 413 And is welded through the hole 413a of the second support plate 413. The first and second support plates 413 and 413 are welded to each other. The second support bar 415 is slantingly supported by the steel wire supporting part 300 to support the steel wire 500 passing between the two second support plates 413 so as to be switched in the horizontal direction. In addition, the bending resistance of the second support rods 415 can be reinforced by welding the support rod reinforcement members 416 to the second support rods 415 between the two second support plates 413.

The U-shaped bolt 417 supports the both ends of the second support rod 415 protruding outward from the second support plate 413 while supporting the second base plate 411 in the fixing part steel 210 of the arcuate beam 200, As shown in Fig. A U-shaped bolt stopper 418 may be welded to the U-shaped bolt 417 to prevent the U-shaped bolt 417 from being detached in the lateral direction . The U-shaped bolt 417 penetrates from one side to the other side of the fixing part steel 210 of the arcuate beam 200 and is fastened and fixed with a nut. At this time, a reinforcing plate 220 of a certain thickness is attached to the other side of the fixing part steel 210 of the arcuate beam 200 to reinforce the other side flange of the fixing part steel 210 of the arcuate beam 200. A plurality of reinforcing frames 230 are spaced apart from the sides of the fusing portion 210 in order to reinforce the fusing portion 210 of the arcuate beam 200 due to the tension of the penetrating bolts and the tension of the steel wire Welded.

The steel fixing part 420 is installed on the other side of the arcuate beam 200 in parallel with the steel wire switching part 410 in the horizontal direction and fixes the steel wire 500 which is switched in the horizontal direction by the steel wire switching part 410, And serves to support the horizontal force (shearing force) in accordance with the tensile strength of the steel wire 500. [

The steel determining unit 420 may include a fixed beam 421, a fixing plate 423, and a fixture 425.

The fixed beam 421 is coupled to one side surface of the fixing part steel 210 of the arch beam 200 so as to be spaced apart from the second base plate 411 and has a predetermined length parallel to the longitudinal direction of the fixing part steel 210 . The fixed beam 421 is made of H-shaped steel and can be fastened and fixed to the fixing part steel 210 by a plurality of bolts 422 passing through the fixing part steel 210 of the arcuate beam 200.

The fixing plate 423 has a rectangular plate shape and is welded and fixed to one end of the fixing beam 421. The fixing plate 423 has a circular hole 423a through which the steel wire 500, Is formed at the center. A plurality of reinforcing plates 424 are welded to the joints of the fixed beam 421 and the fixed plate 423 to reinforce the welding and fixing of the fixing plate 423 to the fixed beam 421 and prevent deformation of the fixing plate 423. [ .

The fixture 425 fixes the steel wire 500 passing through the hole 423a of the fixing plate 423 in a stretched state. For example, the fixture 425 may include a wire fixing head having a plurality of circular holes having a circular cross-section and a wedge-shaped cross section, the wire 500 having passed through the hole 423a of the fixing plate 423, A wedge-shaped cone is inserted into the circular hole of the fixing head and can be firmly fixed by the wedge shape when the wire 500 is pulled. Since the fixing member 425 can be understood by a known technique, a detailed description thereof will be omitted.

10 is a view showing an operating state in which a reinforcement device for supporting the earth retaining structure supports the earth pressure acting on the earth retaining wall in the temporary retaining structure according to an embodiment of the present invention.

In order to secure the space for constructing the underground part of the building, it is necessary to construct the excavated soil wall to prevent the collapse of the ground surface, that is, the terraced surface, where the earth retaining wall can support the applied earth pressure .

10, the earth pressure A acting on the earth retaining wall is formed in such a manner as to correspond to an arched beam (not shown) located on both sides of the earth retaining wall 1 (see Fig. 1), similarly to the arched bridge supporting the load applied from above the vehicle The earth pressure acting on the horizontal beam 100 positioned at the middle of the earth retaining wall 1 is transmitted to the steel wire support 301 by the prestressed steel wire 500, Thereby supporting the retaining wall body 1.

11 is a view showing a correlation between a bending moment generated by the reinforcement device for the earth retaining structure and a bending moment generated due to the earth pressure acting on the earth retaining wall in the temporary retention structure according to an embodiment of the present invention.

As shown in FIG. 11, in the temporary retention structure of the earth retaining structure, the reinforcing device 30 for the temporary retention of the soil retains the bending moment M _A due to the earth pressure acting on the earth retaining wall, the arch structure of the arched beam 200, 100 are offset from each other by the bending moment M _B generated by the prestressing, so that the bending moment M of the entire structure becomes zero, so that the earth pressure acting on the earth retaining wall 1 can be stably supported.

FIG. 12 is a plan view showing a temporary earth retaining structure according to another embodiment of the present invention. FIG.

12, the earth retaining structure according to another embodiment of the present invention includes a wale 10, a corner strut 20, a reinforcing device 30 for earth retaining walls, a strut wall strut 40, (50), and an example in which a large scale earth retaining structure is applied is shown.

Other embodiments of the present invention are the same as those of the embodiment of the present invention described with reference to FIGS. 1 to 11, except for the retaining wall braces 40 and the brace intermediate connection portions 50. Therefore, the detailed description of the wale 10, the corner brace 20, and the reinforcing device 30 for the earth retaining construction, which are components that perform the same functions as those of the embodiment, will be omitted. Hereinafter, Only the retaining wall bracket 40 and the strut bracket intermediate connection portion 50 will be described in detail.

In this embodiment, when the scale of the earth retaining structure is increased, it is necessary to install an additional support bracket 40 for supporting the earth retaining wall 1 having a long span.

The earth retaining wall brace 40 may be formed in a plurality of cross-sections in the transverse direction and the longitudinal direction at the center of the earth wall excavated so as to fix and support a plurality of the earth retaining reinforcing devices 30. The struts 40 are bolted to an intermediate connection part 50 which will be described later and the other end is bolted between neighboring arcuate beams 200 of the reinforcing device 30 for the earth retaining construction.

The strut intermediate connection portion 50 is provided at an intermediate portion where the plurality of strut rods 40 intersect on the same plane.

13 is a perspective view of the brace intermediate connection portion shown in Fig.

As shown in FIG. 13, the brace intermediate connection portion 50 includes first steel members 51-1, 51-2, and 51-3 provided on strut attachment lines in a specific direction, and second steel members 51-1, 51-2, (52-1, 52-2).

The reinforcing beams 53-1 and 53-2 are welded to the first steels 51-1, 51-2 and 51-3 in order to support the horizontal force transmitted from the strut which is located on the same line in the middle, .

Angle steel plates or steel plates 54-1, 54-2 and 54-3 are disposed on the same line of the reinforcing beams 53-1 and 53-2 as the first steel plates 51-1 and 51-2, 51-3, and the angle steel or steel plates 55-1, 55-2, 55-3 are welded and reinforced to the lower side of the web symmetrically so as to be transmitted from the stranded strand on the same line Thereby preventing deformation of the first steels 51-1, 51-2, and 51-3 due to the horizontal force.

When the steel plates 56-1, 56-2, 56-3, and 56-4 having the bolt holes 50a are welded, the second steel materials 52-1 and 52-2 are welded to the first steel material 56-2, 56-3, and 56-4 so that the surfaces of the steel plates 56-1, 56-2, 56-3, and 56-4 are flush with the surfaces of the steel plates 56-1, 56-2, 56-3, 56-4) shall be taken into account and their length shall be determined.

Each of the second steel materials 52-1 and 52-2 is formed by welding an angle steel or an iron plate to the upper side of the web and symmetrically brazing the angle steel or steel plate to the lower side of the web, Thereby preventing deformation of the second steel materials 52-1 and 52-2 due to the horizontal force.

Steel plates 56-1, 56-2, and 56-3 having bolt holes 50a are formed to connect the strut bosses 41, 42 in the transverse direction and the strut bosses 43, 44 in the longitudinal direction to the strut intermediate connection portion 50. [ The first steel materials 51-1, 51-2 and 51-3 and the second steel materials 52-1 and 52-2 are welded to the respective direction strands 41, 42, 43, Bolt hole 50a is formed at a portion connected to the strut bracket intermediate connection portion 50 and the direction strut brackets 41, 42, 43, 44 on the same plane by bolting.

Therefore, in the present embodiment, when the strut braids 41 and 42 and the strut struts 43 and 44 in the transverse direction cross each other, the strut braid intermediate connection portions 50 are formed on the same plane So as to support the supporting force without eccentricity.

The earth retaining structure using the earth retaining reinforcing device 30 according to the present invention can be applied to the earth retaining wall 1 by using the arch structure of the arched beam 200 and the pre-stressed structure of the horizontal beam 100 By stably supporting the earth pressure, the quantity of the steel material to be used can be remarkably reduced, the construction cost and the material cost can be reduced, and the construction period can be shortened. In addition, by omitting the strut brackets 40 or significantly reducing the number of the strut bosses 40, it is possible to easily secure the work space, so that the smooth installation of equipment or materials due to the construction of civil engineering structures or construction of the earth retaining wall 1 It is possible.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: wristband 20: corner strap
30: Reinforcement device for temporary restraining of the earthquake 40: Retaining wall strut
50: strut intermediate connection part 100: horizontal beam
200: arched beam 300: steel wire support
301: Steel wire bracket 310: Hydraulic jack
320: first base plate 330: first support plate
340: first support rod 350: support block
400: Steel wire fixing part 410: Steel wire switching part
411: second base plate 413: second support plate
415: second support rod 417: U-shaped bolt
420: Steel fixing part 421: Fixed beam
423: Fixing plate 425: Fixture
500: Steel wire

Claims (9)

A horizontal beam installed across a plurality of vertical files arranged at regular intervals on excavated soil walls and fixed to a wale supporting the earth retaining wall;
A pair of arcuate beams integrally connected to both sides of the horizontal beam and having an arch shape symmetrical with respect to the horizontal beam;
A wire supporting portion provided on a wire support standing upright on the horizontal beam;
A steel wire fixing unit installed in each of the arcuate beams; And
And a steel wire supported by the steel wire supporting part and connected at both ends to the steel wire fixing part to be fixed and tensioned to be pre-stressed,
The earth pressure acting on the earth retaining wall is transmitted to and supported by the arched beam located on both sides of the earth retaining wall, and the earth pressure acting on the horizontal beam located in the middle of the earth retaining wall is a reaction force generated on the steel wire support by the prestressed steel wire To support the earth retaining wall,
Wherein the steel wire fixing unit comprises:
A steel wire switching unit installed at one side of the arched beam and switching the steel wire tilted by the steel wire supporting unit in a horizontal direction; And
And a steel fixing unit installed on the other side of the arched beam in parallel with the steel wire switching unit to fix the steel wire converted in the horizontal direction by the steel wire switching unit,
The wire-
A second base plate fixed to one side of the arch beam;
A pair of second support plates which are provided on the second base plate and are parallel to each other with a predetermined gap therebetween and formed with holes vertically penetrating the plate surface;
A pair of second support plates which are inserted into the holes of the second support plate across the pair of second support plates and are slantingly supported by the wire support portions so as to support the steel wires passing between the pair of second support plates in a horizontal direction A second support bar; And
And a pair of U-shaped bolts for supporting both ends of the second support rod outside the second support plate and fastening the second base plate to the arched beam.
The method according to claim 1,
The arcuate beam is formed such that one end is connected to the end of the horizontal beam and the other end is formed to bend inward of the earth wall and spaced from the earth retaining wall and is positioned on both sides of the earth retaining wall and supported on the corner strut of the earth wall. A reinforcing device for the provision of a retaining wall.
The method according to claim 1,
The wire-
A hydraulic jack installed on the steel wire support;
A first base plate fixed to the hydraulic jack;
A pair of first support plates which are provided on the first base plate and are parallel to each other with a predetermined gap therebetween and formed with holes vertically penetrating the plate surface;
A first support bar inserted in the hole of the first support plate across the pair of first support plates and supporting the steel wire under a compressive force in accordance with the tension of the steel wire; And
And a support block installed between the first base plate and the first support bar and reinforcing and supporting the compressive force received by the first support bar,
And a prestress is applied to the steel wire through upward movement of the hydraulic jack.
delete delete The method according to claim 1,
The steel determining unit includes:
A fixed beam coupled to one side of the arcuate beam to be spaced apart from the second base plate and having a predetermined length parallel to the longitudinal direction of the arcuate beam;
A fixing plate coupled to one end of the fixed beam and having a hole through which the steel wire passed through in the horizontal direction by the second support bar is formed; And
And a fixing device for fixing the steel wire passing through the hole of the fixing plate in a state of being pulled.
A wale installed across the plurality of vertical files disposed at regular intervals on the excavated soil wall to support the earth retaining wall; And
And a reinforcing device for a temporary earth retaining device according to any one of claims 1 to 3 and 6 installed in the wale band,
The bending moment generated by the arch structure of the arched beam and the bending moment generated by the prestress of the horizontal beam and the earth pressure acting on the earth retaining wall are canceled each other and the bending moment as a whole is zero And the earth pressure acting on the retaining wall is stably supported.
8. The method of claim 7,
A plurality of reinforcing devices for temporary earth retaining construction are installed along the wale band,
Wherein the arched beams adjacent to each other of the temporary retention reinforcement device are supported by abutting ends of the arched beams.
9. The method of claim 8,
In the retaining structure,
A plurality of strut bosses crosswise installed in a transverse direction and a longitudinal direction at the center of a to-be-grounded excavated so as to fixedly support a plurality of the earthquake reinforcement devices; And
Further comprising: an intermediate connection portion provided at an intermediate portion where a plurality of the strut bosses intersect on the same plane, and one end of the strut bosses is bolted to each other.

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