CN112726442A

CN112726442A - Construction method of large-span thin-wall concrete sound barrier pouring trolley

Info

Publication number: CN112726442A
Application number: CN202011600599.4A
Authority: CN
Inventors: 任小森; 孙爱田; 于广涛; 毕宗伟; 赵杨; 张春; 刘林; 王琨; 王志宇; 符强
Original assignee: China Railway Sixth Group Co Ltd; Beijing Railway Construction Co of China Railway Sixth Group Co Ltd
Current assignee: China Railway Sixth Group Co Ltd; Beijing Railway Construction Co of China Railway Sixth Group Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-30
Also published as: DE212021000393U1; LU501348B1; LU501348A1; WO2022142193A1; ZA202306668B

Abstract

The application relates to a construction method of a large-span thin-wall concrete sound barrier pouring trolley, which comprises the following steps: step 1, constructing foundations on two sides of an existing line, and installing steel rails on the foundations; step 2: hoisting the pre-assembled traveling system; and step 3: installing a truss system: transporting the processed arch centering to a construction site, hoisting the arch centering, and connecting the upright posts with the connecting beams; adjusting a jack and an oil cylinder, adjusting the arch frame and the turning section to the designed elevation, sequentially carrying out subsequent arch frame installation, and connecting rods between adjacent arch frames after the arch frame installation and adjustment are finished; and 4, step 4: and (3) installing a bottom die on the top arch, binding reinforcing steel bars, installing side dies, pouring concrete, reducing the height of the arch frame through a jack and an oil cylinder after the designed strength of the concrete is achieved, dismantling the bottom die, and then adjusting the height of the jack to enable the travelling wheels to contact the steel rail and move the trolley. This application has and is convenient for remove and the construction, when satisfying the construction, does not influence the current of existing circuit.

Description

Construction method of large-span thin-wall concrete sound barrier pouring trolley

Technical Field

The application relates to the field of trolleys, in particular to a construction method for pouring a trolley through a large-span thin-wall concrete sound barrier.

Background

The sound barrier is a wall structure provided beside railways and highways to reduce the influence of driving noise on nearby residents.

The sound barrier comprises a foundation, main beams arranged on the foundation and secondary beams connected between the main beams, wherein the main beams and the secondary beams of the sound barrier are generally of reinforced concrete structures, and templates need to be erected during construction. At present, a full hall scaffold is generally erected below a construction primary beam and a construction secondary beam to serve as a support, and the full hall scaffold is used for supporting formwork installation of the primary beam and the secondary beam. However, the sound barrier is generally installed beside the existing railway or road, and the full hall scaffold can occupy the space of the railway or road and affect the normal traffic.

In view of the above related technologies, the inventor thinks that there is a technical problem that the construction of the primary and secondary beams of the existing sound barrier can affect normal traffic.

Disclosure of Invention

In order to solve the technical problem that the construction of the sound barrier influences the normal traffic of the existing line, the application provides a construction method of a large-span thin-wall concrete sound barrier pouring trolley.

The application provides a construction method of large-span thin wall concrete sound barrier pouring trolley, adopts following technical scheme:

the construction method of the large-span thin-wall concrete sound barrier pouring trolley comprises the following steps:

step 1, constructing foundations on two sides of an existing line, and installing steel rails on the foundations;

step 2: hoisting the pre-assembled traveling system, adjusting the position of the connecting beam to enable the traveling wheels to be matched with the steel rail, then adjusting the jack, supporting one end of the jack on the foundation, enabling the traveling wheels to be separated from the steel rail, and supporting the connecting beam;

and step 3: installing a truss system: transporting the processed arch centering to a construction site, hoisting the arch centering, connecting the upright post with the connecting beam, adjusting the jack and the oil cylinder, adjusting the arch centering and the turning section to the designed elevation, repeating the process, sequentially carrying out subsequent arch centering installation, and connecting the connecting rods between the adjacent arch centering after the arch centering installation adjustment is finished;

and 4, step 4: and (3) installing a bottom die on the top arch, binding reinforcing steel bars, installing side dies, pouring concrete, maintaining, reducing the height of the arch frame through a jack and an oil cylinder after the designed strength of the concrete is reached, dismantling the bottom die, and then continuously adjusting the height of the jack to enable the travelling wheels to contact the steel rail and move the trolley.

By adopting the technical scheme, the truss system and the walking system are combined to form the template supporting trolley, the height of the arch can be adjusted through the lifting assembly, the arch and the overturning section support the bottom die, and the trolley is convenient to move after construction is completed through the walking wheels;

and a space for the existing road to pass through is formed between the adjacent upright columns, so that the trolley is used as an existing line protective shed frame and a bearing frame body of a cast-in-place concrete bottom die.

Optionally, each arch is divided into two sections, the two sections of arches are bolted, one section of arch is hoisted first, and after the installation is completed, the other section of arch is hoisted, and the connection of the two sections of arches is completed.

By adopting the technical scheme, the arch is arranged into two sections, so that on one hand, the occupied area of the arch is reduced, and the transportation and hoisting of the arch are facilitated; on the other hand, the weight of the arch is reduced, so that the crane can meet the hoisting work of the arch.

Optionally, a portal frame is installed on the outer side of the sound barrier, and the sound barrier is located in the portal frame.

By adopting the technical scheme, parts such as the connecting rod, the pedal and the like are hoisted through hoisting equipment on the portal frame; meanwhile, when the template is installed, the template can be hoisted, and construction is facilitated.

Optionally, processing the arch frame: a cross beam is connected below the top arch, and two ends of the cross beam are respectively connected and fixed with the top arch; the vertical rods and the diagonal rods are fixedly connected between the top arch and the cross beam in sequence, the upright columns are fixedly connected with the cross beam or the top arch, and then the diagonal braces between the upright columns and the cross beam are connected.

By adopting the technical scheme, the arch center is processed in advance, and the arch center can be directly hoisted during construction, so that the danger of high-altitude operation is reduced.

Optionally, the traveling system comprises a connecting beam, a traveling wheel and a jack, wherein the traveling wheel and the jack are installed at the bottom of the connecting beam.

By adopting the technical scheme, the lifting of the arch frame and the installation and the removal of the bottom die are controlled by the jack, and the moving of the arch frame is controlled by the walking wheels, so that the operation is more convenient.

Optionally, a driving motor is mounted on the connecting beam and is in transmission connection with the traveling wheels.

Through adopting above-mentioned technical scheme, utilize driving motor to drive the bow member and remove, it is more convenient.

Optionally, after the connecting rod is installed, a pedal is laid on the connecting rod.

Through adopting above-mentioned technical scheme, the footboard covers and forms the work platform that can go up people on the connecting rod, and constructor can stand and carry out concrete placement work on work platform, and convenient construction, the security is better.

Optionally, the truss system includes the bow member, connects the coupling assembling of adjacent bow member and articulates the upset section at the bow member both ends respectively, the bow member bottom is fixed with two stands at least, be connected with the hydro-cylinder between stand and the upset section.

Optionally, the arch center includes a top arch, a cross beam disposed below the top arch and having two ends respectively fixedly connected to the top arch, and a vertical rod and an oblique rod fixedly disposed between the top arch and the cross beam, wherein two ends of the top arch are respectively hinged to the turning section.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the formwork supporting trolley, the truss system and the walking system are combined to form the formwork supporting trolley, the height of the arch frame can be adjusted through the lifting assembly, the arch frame and the overturning section can support the bottom die, and the trolley can be conveniently moved after construction is completed through the walking wheels;

and a space for the existing road to pass through is formed between the adjacent upright columns, so that the trolley is used as an existing line protection shed frame and a bearing frame body of a cast-in-place concrete bottom die;

2. a working platform is formed by arranging pedals between the arches, so that people can conveniently construct the working platform;

3. the arch is arranged into two sections, so that on one hand, the occupied area of the arch is reduced, and the arch is convenient to transport and hoist; on the other hand, the weight of the arch is reduced, so that the crane can meet the hoisting work of the arch.

Drawings

Fig. 1 is a front view of the dolly.

Fig. 2 is a partial side view of the trolley.

Description of reference numerals: 1. an arch frame; 11. a top arch; 12. a cross beam; 13. erecting a rod; 14. a diagonal bar; 15. a scissor diagonal brace; 16. bracing; 2. turning over the section; 3. a column; 4. a connecting beam; 5. a connecting assembly; 6. a support assembly; 61. a horizontal beam; 62. an oil cylinder; 7. a traveling wheel; 8. a lifting assembly; 81. a connecting plate; 82. mounting a plate; 83. a jack; 9. a foundation; 91. a steel rail.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a construction method of a large-span thin-wall concrete sound barrier pouring trolley, which comprises the following steps: in connection with the figures 1 and 2 of the drawings,

step 1: constructing foundations 9 on two sides of an existing road or railway; the foundation 9 is a concrete strip foundation 9 and is laid along the length direction of the existing road. When the concrete of the foundation 9 is poured, the steel rails 91 are pre-embedded in the foundation 9, the distance between the adjacent steel rails 91 is the same as the distance between the adjacent upright posts 3 on the trolley, and the steel rails 91 protrude out of the top surface of the foundation 9 to be used as the traveling tracks of the trolley.

Step 2: install the traveling system on basis 9, the traveling system is for processing in advance to accomplish, and on-the-spot hoist and mount to basis 9, and it includes tie-beam 4, installs walking wheel 7 and jack 83 in the tie-beam 4 bottom, and walking wheel 7 divide into action wheel and follower, and action wheel and follower distribute in turn, and the action wheel transmission is connected with driving motor, and driving motor can install on tie-beam 4. Wherein each walking wheel 7 and the two jacks 83 form a group of walking systems, and the walking wheel 7 of each group of walking systems is positioned between the two jacks 83. Two mounting plates 82 are mounted at the bottom of the connecting beam 4, connecting plates 81 are fixed on two sides of the connecting beam 4, and the connecting plates 81 are connected with the mounting plates 82 through bolts. An installation space for installing the jack 83 is formed between the two installation plates 82, the jack 83 is positioned between the two installation plates 82, one end of the jack 83 is connected with the bottom of the connecting beam 4, and the other end of the jack is used for being supported on the foundation 9. The installation steps are as follows: hoisting the assembled traveling system, and adjusting the position of the connecting beam 4 to enable the traveling wheels 7 to be matched with the steel rails 91; the jack 83 is then adjusted to support one end of the jack 83 on the foundation 9, disengaging the road wheels 7 from the rails 91 and supporting the connecting beam 4.

And step 3: hoisting a truss system: the truss system comprises an arch center 1, a connecting component 5 for connecting adjacent arch centers 1 and turnover sections 2 respectively hinged to two ends of the arch center 1; the arch centering 1 interval evenly sets up a plurality ofly, and a plurality of arch centering 1 are located the same axis, and the bottom of arch centering 1 is fixed with two stands 3 at least, and the radical of stand 3 can be confirmed according to the span of arch centering 1 and the interval between the adjacent stand 3, and this application explains with three stands 3 as the example, forms the space that existing road passed through between the adjacent stand 3. An oil cylinder 62 used for supporting the turning section 2 is arranged between the upright post 3 and the turning section 2, one end of the oil cylinder 62 is hinged with the upright post 3, and the other end of the oil cylinder 62 is hinged with the turning section 2.

The arch center 1 comprises an arc-shaped top arch 11, vertical rods 13 and inclined rods 14, wherein the two ends of the arc-shaped top arch are respectively fixedly connected with a cross beam 12 of the top arch 11 below the top arch 11, and the vertical rods 13 and the inclined rods 14 are fixedly arranged between the top arch 11 and the cross beam 12, the vertical rods 13 and the inclined rods 14 are alternately distributed, the intervals of the vertical rods 13 are uniformly distributed, the inclined rods 14 are arranged in a wavy manner, the vertical rods 13 and the inclined rods 14 are used for increasing the structural strength of the arch center 1, and the supporting bottom die can be stabilized. The upright post 3 is fixedly connected with a top arch 11 or a cross beam 12. The turning section 2 is hinged with the top arch 11, and the material and the specification of the turning section and the top arch are consistent. And a scissor diagonal brace 15 is fixedly connected between adjacent upright posts 3 of different arch frames 1 in the same column, so that the integrity and the support stability of the truss system are improved.

Be connected with bracing 16 between stand 3 and the crossbeam 12, bracing 16 one end fixed connection is on stand 3, other end fixed connection is on crossbeam 12, wherein be equipped with one bracing 16 between stand 3 that is located bow member 1 both ends and crossbeam 12, be located and be equipped with twice bracing 16 between stand 3 in the middle of and the crossbeam 12 to the both sides at stand 3 are installed to twice bracing 16 symmetry, utilize bracing 16 to increase the joint strength and the support performance of stand 3 and bow member 1.

Coupling assembling 5 includes the connecting rod, and the connecting rod can be made for the channel-section steel, and the connecting rod can be dismantled to connect between adjacent top arch 11 and between adjacent section 2 that overturns, and wherein can dismantle to connect for bolted connection, the connecting rod along the top arch 11 with the radian direction interval evenly distributed of section 2, is equipped with the footboard at the connecting rod upper berth, the footboard be with the top arch 11 radian unanimous arc, the footboard will be adjacent to be encircleed the space between 11 and seal, pour for the sound barrier and provide people's work platform.

The installation steps are as follows:

processing: a cross beam 12 is connected below the top arch 11, and two ends of the cross beam 12 are respectively welded and fixed with the top arch 11; then, a vertical rod 13 and an inclined rod 14 are fixedly connected between the top arch 11 and the cross beam 12 in sequence; the installation positions of the upright posts 3 are positioned on the cross beams 12 and the top arches 11 by paying off, the upright posts 3 and the cross beams 12 or the top arches 11 are bolted or welded, and then the inclined struts 16 between the upright posts 3 and the cross beams 12 are connected. After completion, the turning section 2 hinged to the crown 11 is installed, and the cylinder 62 is connected between the turning section 2 and the pillar 3.

After the arch centering 1 is processed, the arch centering 1 is transported to a construction site, the arch centering 1 is hoisted, the upright posts 3 and the connecting beams 4 are fixedly bolted, the jacks 83 and the oil cylinders 62 are adjusted, and the arch centering 1 and the turning sections 2 are adjusted to the designed elevation. And repeating the process, and sequentially installing the subsequent arch centering 1. After the arch centering 1 is installed and adjusted, the scissor diagonal braces 15 are installed between the adjacent upright posts 3, the arch centering 1 are connected into a whole, the connecting rods are connected between the adjacent arch centering 1, and the pedals are laid on the connecting rods to form a construction platform.

And 4, step 4: and (3) installing a template, fixedly installing a bottom die of a main beam of the sound barrier on the top arch 11, binding main beam steel bars, installing side dies and pouring concrete. After the concrete is initially set, the side mold is firstly removed, concrete curing liquid is coated for curing, after the concrete reaches the designed strength, the height of the arch frame 1 is reduced through the jack 83 and the oil cylinder 62, and the bottom mold is removed. Then, the height of the jack 83 is continuously lowered, so that the travelling wheels 7 contact the steel rail 91, and the trolley is driven to move to the next construction position by the driving motor.

When the span of the arch frame 1 is large, the requirements of transportation and hoisting on construction space and crane specification are high, and construction on site is difficult to carry out, so that each arch frame 1 is divided into two sections, the two sections of arch frames 1 are bolted, during construction, one section is hoisted first, after installation is finished, the other section is hoisted, and the two sections are connected and fixed. By arranging the arch center 1 into two sections, on one hand, the occupied area of the arch center 1 is reduced, and the arch center 1 is convenient to transport and hoist; on the other hand, the weight of the arch center 1 is reduced, so that the crane can meet the hoisting work of the arch center 1.

Furthermore, in order to facilitate trolley installation and template installation, a portal frame is arranged on the outer side of the sound barrier, the sound barrier is positioned in the portal frame, and parts such as a connecting rod, a pedal and the like are hoisted through hoisting equipment on the portal frame; meanwhile, when the template is installed, the template can be hoisted, and construction is facilitated.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The construction method of the large-span thin-wall concrete sound barrier pouring trolley is characterized by comprising the following steps of:

step 1, constructing foundations (9) on two sides of an existing line, and installing steel rails (91) on the foundations (9);

step 2: hoisting the pre-assembled traveling system, adjusting the position of the connecting beam (4) to enable the traveling wheels (7) to be matched with the steel rail (91), then adjusting the jack (83), supporting one end of the jack (83) on the foundation (9), enabling the traveling wheels (7) to be separated from the steel rail (91), and supporting the connecting beam (4);

and step 3: installing a truss system: transporting the processed arch centering (1) to a construction site, hoisting the arch centering (1), connecting the upright posts (3) with the connecting beams (4), and forming an existing line space between the adjacent upright posts (3); adjusting a jack (83) and an oil cylinder (62), adjusting the arch centering (1) and the turning section (2) to a designed elevation, repeating the process, sequentially installing the subsequent arch centering (1), and connecting rods between the adjacent arch centering (1) after the installation and adjustment of the arch centering (1) are completed;

and 4, step 4: installing a bottom die on the top arch (11), binding steel bars, installing side dies, pouring concrete, maintaining, reducing the height of the arch center (1) through a jack (83) and an oil cylinder (62) after the designed strength of the concrete is achieved, dismantling the bottom die, then continuously adjusting the height of the jack (83), enabling the travelling wheels (7) to contact with the steel rails (91), and moving the trolley.

2. The construction method of the large-span thin-wall concrete sound barrier pouring trolley according to claim 1, characterized in that: dividing each arch (1) into two sections, bolting the two sections of arch (1), hoisting one section of arch (1), after the installation is finished, hoisting the other section of arch (1), and finishing the connection of the two sections of arch (1).

3. The construction method of the large-span thin-wall concrete sound barrier pouring trolley according to claim 1, characterized in that: and a portal frame is arranged on the outer side of the sound barrier, and the sound barrier is positioned in the portal frame.

4. The construction method of the large-span thin-wall concrete sound barrier pouring trolley according to claim 1, characterized in that: processing an arch center (1): a cross beam (12) is connected below the top arch (11), and two ends of the cross beam (12) are respectively connected and fixed with the top arch (11); an upright rod (13) and an inclined rod (14) are fixedly connected between the top arch (11) and the cross beam (12) in sequence, the upright column (3) is fixedly connected with the cross beam (12) or the top arch (11), and then an inclined strut (16) between the upright column (3) and the cross beam (12) is connected.

5. The construction method of the large-span thin-wall concrete sound barrier pouring trolley according to claim 1, characterized in that: the walking system comprises a connecting beam (4), a walking wheel (7) arranged at the bottom of the connecting beam (4) and a jack (83).

6. The construction method of the large-span thin-wall concrete sound barrier pouring trolley according to claim 5, characterized in that: a driving motor is arranged on the connecting beam (4) and is in transmission connection with the travelling wheels (7).

7. The construction method of the large-span thin-wall concrete sound barrier pouring trolley according to claim 1, characterized in that: after the connecting rod is installed, a pedal is laid on the connecting rod.

8. The construction method of the large-span thin-wall concrete sound barrier pouring trolley according to claim 1, characterized in that: truss system includes bow member (1), connects coupling assembling (5) of adjacent bow member (1) and articulates upset section (2) at bow member (1) both ends respectively, bow member (1) bottom is fixed with two stands (3) at least, be connected with hydro-cylinder (62) between stand (3) and upset section (2).

9. The construction method of the large-span thin-wall concrete sound barrier pouring trolley according to claim 8, characterized in that: the arch center (1) comprises a top arch (11), a cross beam (12) which is arranged below the top arch (11) and two ends of which are respectively fixedly connected with the top arch (11), and a vertical rod (13) and an inclined rod (14) which are fixedly arranged between the top arch (11) and the cross beam (12), wherein two ends of the top arch (11) are respectively hinged with the overturning section (2).