KR100975113B1 - Curve element concrete pouring device and construction method - Google Patents

Abstract

The present invention is a curb element (concrete) placing device, the vehicle shape, the lid 60, a plurality of wheels 50 provided on the front and rear of the lower portion of the lid 60, and the lid 60 Inlet (5) installed on one side of the upper rear, four upper, lower left and right handles (7) installed in the upper front left and right corners and the rear left and right corners of the cover 60, and a predetermined interval in the front center of the cover (60) Two directional key handles 6 spaced apart from each other, and an outlet 51 installed at a lower rear side of the cover 60,

The interior of the cover 60 is divided by a partition 70, the engine 31 installed in the front center portion of the partition 70, the gear 32 connected to one side of the engine, and the gear 32 A reducer 34 connected to and driven by a chain 33 connected to the), a mill plate 36 connected to a cylinder 35 installed at the front of the reducer 34 and installed at one lower side of the partition 70, The present invention relates to a curved element concrete placing device of a slope dam composed of a concrete discharge part 75 installed on a rear surface of the partition 70 and a construction method using the same.

Curve element concrete pouring device and construction method

Description

 Curb element concrete placing apparatus and the method of construction Thereof}

The present invention is a slope of the upstream of the dam when the upstream slope of the main dam is crushed or the upstream of the dam is overflowed due to rainwater penetration during the construction of the main dam before the completion of the surface draft wall concrete pouring in the CFGD type dam. As a lot of damage is expected, as a countermeasure against this, the concrete element placing device of the curb element of the concrete slope dam for the protection of the upstream slope in consideration of the case of the existing dam and the hydrologic characteristics, It relates to a construction method using a Curb element.

Dams are structures that are constructed for the purpose of water storage, intake, and sedimentation prevention across rivers, and are called reservoir, intake, and four-sided dams for each purpose. Says a reservoir dam. The purpose of the reservoir dam is to artificially control the fluctuations in the flow of the river, and to confine the water when the flow rate is high, to discharge the water from the dam at the time of drainage, agriculture, power generation, water supply, industry, transportation, etc. Supply the necessary water. It is also used to save some or all of the flood flow to reduce downstream flood flow and to prevent flood disasters.

As such, the reservoir dam is used for various purposes, of which only one purpose is used as a dedicated dam, and more than one purpose is called a multipurpose dam. Intake dams are dams whose purpose is to raise the water level in order to draw river water into the waterways. Four-sided dams reduce the amount of outflow to downstream by preventing the outflow of soil from mountain and valley. Dams are classified as concrete dams and fill dams according to construction materials. Fill dams include earth dams, which are made of earth, and rockfill dams, which are made of stone.

Concrete dams are classified into gravity dams, hollow gravity dams, buttress dams and arch dams, depending on their structure.

Since the power dam has a structure in which the stone blocks, ie, rubble and glued stones, are simply stacked in the absence of a binding force, gaps between the stones are opened by the blue water of the stored water, which causes defects in the rubble's jungle. As a result, there is a problem that greatly affects the safety of the dam.

Surface-derived wall dams with reinforced concrete slab-type barrier walls are connected to and placed in a plurality of anchor-type structures installed at the time of the dam's festival to prevent them from acting as well as to prevent upstream slopes. Compared to the conventional surface-order wall type dam, it can be constructed at a steep slope.

Reinforced concrete, asphalt, etc. are used as the material of the repellent wall in the surface repellent wall type dams. In addition to the concrete repellent wall, the retarder is sometimes doubled, and asphalt is mainly used as the retarder.

Such surface water barrier type dams have little effect on the structure when flooded, which is very advantageous in constructing dams in the Dow area.In the same way, the safety of the droop of water level is much higher than other dams. It has the advantage of being suitable for reservoirs with large fluctuations in the surface, such as the lower part.

The slope of the upstream slope in the surface water barrier type dam is inevitable, and the height of the dam is inevitably limited.

In Korean Patent Laid-Open Publication No. 10-2006-0095924, in the surface order wall-type fill dam (FILL DAM) in which a concrete order wall 11 is installed on a slope upstream of the body 10, a plurality of anchors are provided in the body 10. 20) are installed and installed at predetermined intervals; The head of the anchor 20 is described in the anchor reinforcement surface order wall dam is connected to the concrete order wall 11,

In Publication No. 10-2006-0100315, the lower end is fixed to the ground at a position spaced a predetermined distance from the dam axis (DAM AXIS) upstream in the FILL DAM A retaining wall 20 parallel to the dam is provided; An upstream retaining wall type dam is disclosed, characterized in that the body 10 is constituted by the earthenware festival being held behind the retaining wall 20.

Korean Patent Publication No. 10-0714436 discloses a fill dam stone structure in which a order wall, a filtration layer, an intermediate wall, and rubble are sequentially formed and form a stone for depositing on the reservoir side; An anchor plate which is formed in a rectangular plate shape, is fixedly installed at regular intervals in multiple stages in the intermediate wall, and has two first through holes; A fixed anchor formed in a V shape and having first screw threads formed at both ends thereof and penetrating the first through hole of the anchor plate and fixed by a nut; A wire anchor plate which is formed in a rectangular plate shape, is fixedly installed at regular intervals at the top and bottom of the intermediate wall, and has a second through hole at its center; A binding wire formed at both ends with a second screw thread, the both ends of which are fixed by a nut through the second through hole of the wire anchor plate and installed through the inside of the fixing anchor; And it can be seen that the pill dam stone structure is formed in a U-shape including a binding ring fixed to the attachment stone to bind the attachment stone to the binding wire is disclosed.

The present invention is a slope of the upstream front of the dam when the upstream slope of the main dam is crushed or the upstream slope of the dam is overflowed due to rainwater penetration during the construction of the main dam before the completion of the surface draft wall concrete pouring in the CFGD-type dam. As many damages such as loss are expected, the present invention solves the problem of providing a device construction method for quickly placing concrete to protect the upstream slope in consideration of the case of the existing dam and the hydrologic characteristics. It is a task to be done.

The present invention was devised in view of the above-described problems, and the upstream slope to protect the upstream slope of Zone 2 (Bedding Zone), which is the support layer of the surface barrier wall slab, from damage from erosion due to rainfall and construction work until the concrete surface barrier wall slab is poured. The present invention provides a curb element concrete placing device and a construction method using the same of concrete slope dams for rapidly constructing the surface order walls and injecting the surface order walls in the dam axis direction. It is a means.

In order to protect the upstream slope of CFGD, the present invention suppresses the rigid deformation of the barrier wall and integrates the behavior of the barrier wall and the dam body with the same mechanical behavior as the main shaft material. By adjusting the content, the most important part of the construction area of the concrete surface barrier wall type dam (CFGD) acting as the second impermeable layer is quickly constructed. The surface barrier wall slab thus constructed prevents leakage to the dam body and It effectively transfers to the dam body to maintain the structural stability of the body, such as to play the most important role as the dam body has the advantage of requiring durability and watertightness.

In order to achieve the above object, the present invention is a curb element (Curb Element) concrete pouring device of the present invention is a vehicle shape, the cover 60, a plurality of wheels (installed on the front and rear lower surfaces of the cover 60) 50), an inlet 5 installed at one side of the upper rear of the cover 60, four upper, lower left and right handles 7 installed at the upper front left and right edges and the rear left and right corners of the cover 60, and It consists of two direction key handles 6 installed at regular intervals on the front of the cover 60, a discharge port 51 installed in the lower rear of the cover 60,

The interior of the cover 60 is divided by a partition 70, the engine 31 installed in the front center portion of the partition 70, the gear 32 connected to one side of the engine, and the gear 32 A reducer 34 connected to and driven by a chain 33 connected to the), a mill plate 36 connected to a cylinder 35 installed at the front of the reducer 34 and installed at one lower side of the partition 70, It relates to a curb element (Curb Element) concrete pouring device composed of a concrete discharge portion 75 installed on the rear of the partition 70 and a construction method using the same.

In general, the surface layer of the concrete slope dam is composed of surface-receiving wall slab, and the curb element is installed at the lower part of the surface-receiving wall slab until the concrete surface-receiving wall slab is poured. In order to protect the upstream slope of the Zone 2 (Bedding Zone), which is the support wall slab support layer, it is a construction method of installing a curb element on the upstream slope of the Zone 2 (Bedding Zone).

Zone 2 (Bedding Zone) is located in the lower part of the order wall to restrain the rigid deformation of the order wall and integrate the behavior between the order wall and the dam body with the same dynamic behavior as the main shaft material, and adjust the fine grain content to adjust the second It is the most important part of the construction area of the CFGD concrete acting as an impermeable layer.

Surface-receiving wall slab plays the most important role as dam body such as preventing leakage to dam body and effectively delivering water pressure to dam body.

In this case, it is common to install the surface order walls with a surface or a slump by a mold or formwork.

In the present invention, by using a curb element placing apparatus for discharging a curb element having a predetermined degree of inclination, it proceeds in the direction of the dam axis and improves the method of continuously placing the curb element.

The curb element concrete pouring device of the present invention discharges the curb element having a certain inclination by the operation of a mill plate connected to the engine, the reducer, and the cylinder when the concrete is poured into the inlet, and continuously discharges the discharge. It is a device for constructing a construction time and a certain curve element (Curb element) by discharging to the construction.

Hereinafter, the construction method of the present invention will be described in detail with reference to Examples.

Example

As shown in FIG. 7, first, the base zone (Zone 2) is constructed, and then the position measurement (direction, height) is performed on the trapezoidal curved element concrete without using a formwork and a mold. On the basis of this, the curb element (Curb element) concrete pouring device of the present invention is set on the surveying starting point to construct the concrete curb element (Curb element) by inputting concrete,
[Curb element shape can be constructed in other shape by deforming the shape of the lead part (relative density test: 75% or more, target permeability coefficient: 10 ^-4 ~ 10 ^-3 cm / sec, equipment: 10ton Vibration roller, frequency: 1,500RPM or more, compaction speed: 8km / h, etc.) Meet the specification standards. Pay attention to (electric heating wire, steam facility), and after 2 ~ 3 hours of concrete pouring]
The above method was repeated by constructing a Zone 2 (Bedding Zone) on the top and constructing a curb element.

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If necessary, wooden cladding, gutter drainage, drains, and drainage can be used to exclude rainwater flowing along both eyes and the dam surface from the upstream slope so that rainwater does not erode the slope of the upstream slope of the Zone 2 (Bedding Zone). A bench, etc. shall be installed, and the standing water shall be removed to prevent work.

Comparative example

division Shotcrete pouring
(Shotcrete + Wiremesh) The present invention
(Curb element) asphalt
Emulsifier + Sand Spray pros and cons Vulnerability in slope compaction
(Re-construction frequently due to bumps, depressions, construction errors, etc.)
Short term construction possible
Flood protection upstream slope
Difficult installation of slope uniformity · Slope resolution
Easy to repair joint
Good adhesion of dam
Upstream slope protection
Temporary flood safety Vulnerability in slope compaction
Short term construction possible
Incomplete slope protection
Waste generation
(Removed before order wall pouring)

Formulation example

division Unit cement amount
(kg / ㎥) Coarse aggregate
Maximum dimension
(Mm) sand
(<No.4)
(kg / ㎥) Coarse aggregate
(No.4- 3/4 inch) (kg / ㎥) W / C (Dry Mix)
(%) Design criteria 100 20 1,173 1,173 1.67 Formulation Design 250 20 1,005 1,024 50

Surface order wall compressive strength test and results prepared according to the formulation of the present invention

sample
number Age
(Work) standard
(mm) Cross section
(Mm2) Load
(KN) Compressive strength
(n / mm2) (Mpa) Remarks One 34 100 × 200 7,853.982 100.4 12.783 Reference strength
13Mpa 2 34 100 × 200 7,853.982 69.4 8.836 3 34 100 × 200 7,853.982 109.4 13.929 Average 93.067 11.849 85% or more of standard strength
OK

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall view of a curb element concrete placing device of the present invention, Figure 2 is a detailed view of the back of the curb element concrete placing device of the present invention, Figure 3 is a curb element concrete of the present invention Fig. 4 is a detailed plan view of the pouring device, Fig. 4 is a side cross-sectional detail view of a curb element concrete pouring device of the present invention, and Fig. 5 is a construction detail drawing of a curb element concrete pouring device of the present invention. Fig. 7 shows a construction process diagram using a curb element concrete pouring apparatus of the present invention, and shows a starter device 1, a clutch 2, Engine compartment (3), reducer (4), inlet (5), direction key handle (6), up and down left and right handle (7), engine (31), gear (32), chain (33), reducer (34) , Cylinder 35, plate 36, wheel 50, outlet 51, cover 60, partition 70, concrete outlet ( 75), it can be seen that the concrete surface order wall slab (A), curve element (B), building zone (C).

Looking at the structure, as shown in Figures 1 to 7, the curb element (curb element) concrete pouring device of the present invention is a vehicle shape, the cover 60 and a plurality of installed on the front and rear lower surfaces of the cover 60 A wheel 50, an inlet 5 installed at one side of the upper rear side of the cover 60, four upper, lower left and right handles 7 installed at the upper front left and right corners and the rear left and right corners of the cover 60 and It consists of two direction key handles 6 installed at a predetermined distance from the center in the front of the cover 60, and the discharge port 51 installed in the lower rear of the cover 60,

The interior of the cover 60 is divided by a partition 70, the engine 31 installed in the front center portion of the partition 70, the gear 32 connected to one side of the engine, and the gear 32 And a reducer 34 connected to and driven by a chain 33 connected to the chain 33, and a cylinder 36 installed on a front side of the reducer 34, and a wheat plate 36 installed on a lower side of the partition 70. , The structure of the curb element (Curb element) concrete pouring device consisting of a concrete discharge portion 75 installed on the rear of the partition (70).

1 is a general view of a curb element concrete placing apparatus of the present invention

Figure 2 is a detailed view of the back of the curb element concrete placing apparatus of the present invention

3 is a detailed plan view of a curb element concrete placing apparatus according to the present invention;

4 is a side cross-sectional detail view of a curb element concrete placing apparatus according to the present invention;

Figure 5 is a construction state of the curb element concrete placing apparatus of the present invention

6 is a state diagram of the construction of the curb element concrete placing apparatus of the present invention

7 is a construction process diagram using the curb element concrete placing apparatus of the present invention

<Explanation of symbols for the main parts of the drawings>

Starter 1, clutch 2, engine compartment 3, reducer 4, inlet 5, direction key handle 6, up and down left and right handles 7, engine 31, gear 32 ), Chain (33), reducer (34), cylinder (35), plate (36), wheel (50), outlet (51), cover (60), partition (70), concrete outlet (75), concrete Surface lined wall slab (A), concrete curve element (B), construction area (C)

Claims (2)

In the curb element concrete pouring apparatus, Vehicle shape, cover 60, a plurality of wheels 50 provided on the lower front and rear surfaces of the cover 60, the inlet 5 provided on one side of the upper back of the cover 60, and the cover 60 Four upper, lower left and right handles (7) installed at the upper front left and right corners and rear left and right corners of the), and two direction key handles (6) spaced at regular intervals from the front of the cover (60), and the cover Consists of the outlet 51 is installed in the lower rear of the 60, The interior of the cover 60 is divided by a partition 70, the engine 31 installed in the front center portion of the partition 70, the gear 32 connected to one side of the engine, and the gear 32 A reducer 34 connected to and driven by a chain 33 connected to the), a mill plate 36 connected to a cylinder 35 installed at the front of the reducer 34 and installed at one lower side of the partition 70, Curve element concrete pouring device, characterized in that it comprises a concrete discharge portion (75) installed on the rear of the partition (70). In the method of constructing the surface water-repellent wall of the concrete slope dam using the curve element concrete pouring device,  After constructing the Zone 2 (Bedding Zone), the trapezoid-shaped curb element (Curb element) is carried out by positioning (direction, height) of concrete without using formwork and formwork, and then based on the curb element ) Construct the curb element by putting concrete by setting the concrete placing device on the survey point. [The shape of the curve element can be constructed in other shape by deforming the shape of the lead part (relative density test: 75% or more, target permeability coefficient: 10 ^-4 ~ 10 ^-3 cm / sec, equipment: 10ton Vibration roller, frequency: 1,500RPM or more, compaction speed: 8km / h Specification Standard Electric heating wire, steam facility) and after 2 ~ 3 hours of concrete pouring] A construction method using a curb element concrete placing device, characterized in that the base zone (Zone 2) (Bedding Zone) is built on the top, and the curb element is constructed again.

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