CN218233557U

CN218233557U - Bubble mixed light concrete retaining wall concrete prefabricated formwork structure

Info

Publication number: CN218233557U
Application number: CN202222047491.8U
Authority: CN
Inventors: 王贵羽; 单翔; 张应红; 王少鹏; 贺清华; 孟庆; 毛洪建; 贾帅兵; 张纪林; 皮胜
Original assignee: China Railway Guangzhou Engineering Group Co Ltd CRECGZ; CRECGZ Bridge Engineering Co Ltd
Current assignee: China Railway Guangzhou Engineering Group Co Ltd CRECGZ; CRECGZ Bridge Engineering Co Ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2023-01-06
Anticipated expiration: 2032-08-04

Abstract

The utility model relates to a bubble mixes light soil barricade concrete prefabricated formwork structure, including excavating the foundation ditch on the side slope and setting up the multistage horizontal step in the foundation ditch, multistage horizontal step is the echelonment along the direction from the bottom of foundation ditch to the top of foundation ditch and distributes, and the bottom side of foundation ditch is provided with the basic bed course, is provided with prefabricated template on the basic bed course, and prefabricated template encircles in the border department of foundation ditch, still be provided with a plurality of angle steel stands on the basic bed course, be provided with the supporting component who is used for offsetting the horizontal side pressure that produces when concreting between prefabricated template and the angle steel stand. This application has when concreting, offsets the lateral pressure that the prefabricated template produced with the concrete through the pulling force that utilizes angle steel stand cooperation supporting component to prefabricated template to provide, makes prefabricated template can remain stable state, makes the difficult deformation that takes place of prefabricated template, reaches the effect of guaranteeing whole bridge king-tower construction platform's stability.

Description

Bubble mixed light concrete retaining wall concrete prefabricated formwork structure

Technical Field

The utility model belongs to the technical field of civil engineering technique and specifically relates to a bubble mixes light soil barricade concrete prefabricated template structure.

Background

In the work progress of bridge, the construction of bridge king-tower is especially crucial, and in actual work progress, because the restriction of topography, need build bridge king-tower construction platform on high slope usually, and the topography in high slope district is comparatively complicated, can't put the slope and fill.

In the related technology, when a bridge main tower construction platform is constructed, firstly, excavation is carried out inwards on the outer side of a side slope, a large amount of unfavorable geological earthwork is cleared until a stable slightly weathered bedrock is reached, then, rock drilling is carried out on the bedrock to form a retaining wall foundation trench, a gravity type concrete high retaining wall is poured in the foundation trench, and concrete is poured on the inner side of the retaining wall in a layered mode, so that a relatively stable construction platform is formed.

However, in the related art, after the slightly weathered bedrock is excavated on the side slope, a tall retaining wall is constructed, the excavation of the foundation trench and the pile body takes a long time, the construction period is delayed, and in the concrete pouring process, the solidified concrete can generate lateral pressure on the retaining wall, and the retaining wall is easy to deform along with the increase of time, so that the whole construction platform collapses, and great potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

In order to improve the excavation time process among the related art in the bridge king-tower construction platform work progress, hinder the time limit for a project, and the concrete after the solidification can produce the lateral pressure to the barricade when concreting, along with the increase of time, the barricade deformation easily appears, leads to the phenomenon that whole construction platform collapses, this application provides a bubble mix lightweight concrete barricade precast formwork structure.

The application provides a pair of bubble mixture light concrete retaining wall precast formwork structure adopts following technical scheme:

the utility model provides a bubble mixes light soil barricade concrete prefabricated formwork structure, is including excavating the foundation ditch on the side slope and setting up the multistage horizontal step in the foundation ditch, and is multistage horizontal step is followed the direction from the bottom of foundation ditch to the top of foundation ditch and is the echelonment and distributes, the bottom side of foundation ditch is provided with the basic bed course, be provided with prefabricated template on the basic bed course, prefabricated template encircles in the border department of foundation ditch, still be provided with a plurality of angle steel stands on the basic bed course, a plurality of angle steel stands along the circumference direction evenly distributed of foundation ditch, and a plurality of angle steel stands are located one side of prefabricated template towards the foundation ditch, be provided with the supporting component who is used for offsetting the horizontal side pressure that produces when concreting between prefabricated template and the angle steel stand.

Through adopting the above technical scheme, during the construction, excavate the foundation ditch on the side slope, and when the excavation, dig out multistage step, through setting up prefabricated template on basic unit's bed course, make prefabricated template, foundation ditch and side slope cooperation form the concrete placement region, and when concreting, carry out the layering according to multistage step layering and pour in to the foundation ditch, the lateral pressure that the pulling force that provides to prefabricated template through a plurality of angle steel stand cooperation supporting component can offset the concrete and produce prefabricated template, thereby make prefabricated template can keep the steady state, difficult emergence deformation. Compare in the bridge main tower construction platform among the correlation technique excavate on the side slope and execute and make high barricade behind the slightly weathering basement rock, this application only needs excavate the foundation ditch on the side slope, need not to excavate to the basement rock stratum, the engineering time has been shortened, when concreting, utilize the pulling force that a plurality of angle steel stand cooperation supporting components provided to prefabricated template to offset the lateral pressure that the concrete produced prefabricated template, thereby make prefabricated template can keep at stable condition, make prefabricated template be difficult for taking place deformation, whole bridge main tower construction platform's stability has been guaranteed, the risk of incident has been reduced.

Preferably, the prefabricated template comprises a plurality of prefabricated panels, and the prefabricated panels are spliced by adopting horizontal staggered joints.

Through adopting above-mentioned technical scheme, a plurality of prefabricated panels concatenation forms prefabricated template, makes monoblock prefabricated template structure more stable, and the mode of horizontal fissure of displacement concatenation makes the prefabricated template that the concatenation formed comparatively pleasing to the eye simultaneously.

Preferably, the supporting component comprises a plurality of embedded bars fixedly arranged on the prefabricated panel and a plurality of pull rods fixedly arranged on the embedded bars, the plurality of embedded bars and the plurality of pull rods are in one-to-one correspondence, the embedded bars are fixedly arranged on one side, facing the angle steel stand column, of the prefabricated panel, and one end, far away from the embedded bars, of each pull rod is fixedly connected to the angle steel stand column.

Through adopting the above technical scheme, when concreting, the one end fixed connection of pull rod is in the pre-buried muscle, the one end fixed connection of pull rod is in prefabricated panel promptly, the other end fixed connection of pull rod is in the angle steel stand, make fixed connection between angle steel stand and the pre-buried steel sheet, thereby when making concrete produce the side pressure to prefabricated panel, the angle steel stand can produce the pulling force opposite with side pressure direction through the pull rod to prefabricated panel, and then make every prefabricated panel can remain stable, difficult emergence is shifted, thereby make whole prefabricated template remain stable, and the difficult deformation that takes place of prefabricated template.

Preferably, still be provided with the down tube on the angle steel stand, the one end of down tube is fixed to be set up in the angle steel stand and deviates from the one side of prefabricated panel, just the other end of down tube is the slope and sets up downwards.

Through adopting above-mentioned technical scheme, the one end fixed connection of down tube is in the angle steel stand, and concrete placement accomplishes the back, and the one end that the angle steel stand was kept away from to the down tube is fixed in the concrete, supports the angle steel stand, makes the angle steel stand stably to keep in vertical state, and difficult emergence is inclined.

Preferably, still be provided with the connecting rod that is used for linking up a plurality of angle steel stands in proper order in the foundation ditch, the connecting rod sets up along the circumferential direction of foundation ditch, and the equal fixed connection of a plurality of angle steel stands in connecting rod.

Through adopting above-mentioned technical scheme, the setting up of connecting rod makes a plurality of angle steel stands link up in proper order, make a plurality of angle steel stands form a whole through the connecting rod, when the concrete lateral pressure that one of them prefabricated panel bore is too big, shift the lateral pressure to the angle steel stand through the pull rod on, and through the connecting rod with lateral pressure dispersion to each angle steel stand on, thereby make the angle steel stand can support prefabricated template steadily, and then improved the bearing capacity of prefabricated template, make prefabricated template can remain stable.

Preferably, the foundation cushion layer comprises a gravel cushion layer laid on the foundation pit and a plain concrete cushion layer arranged on the gravel cushion layer.

By adopting the technical scheme, the broken stone cushion layer and the plain concrete cushion layer can stably bear the prefabricated template and the concrete poured in the foundation pit, and the bearing capacity to be received is dispersed to the side slope through the broken stone cushion layer, so that the stability of the whole bridge construction platform is improved.

Preferably, the gravel cushion layer is provided with a water outlet for discharging underground water in the gravel cushion layer, the water outlet is communicated with a water drain pipe, the water drain pipe is arranged along the width direction of the foundation pit, and one end of the water drain pipe, which is far away from the water outlet, extends out of the prefabricated template and then is communicated with an external water drainage facility.

Through adopting above-mentioned technical scheme, the drain pipe can be with the infiltration in the concrete and the groundwater in the side slope discharges to external drainage facility, makes the foundation bed course be difficult for receiving the erosion of water to improve the life of this application, avoid leading to the condition of subsiding of whole bridge main tower construction platform because of receiving the corruption of water messenger foundation bed course for a long time.

Preferably, the plain concrete cushion layer is provided with a positioning groove for positioning and installing the prefabricated template.

Through adopting above-mentioned technical scheme, the setting up of constant head tank makes comparatively simple and convenient when installation prefabricated template, has shortened the engineering time.

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

1. when the prefabricated formwork is poured, the side pressure of the prefabricated formwork caused by the concrete is counteracted by utilizing the pull force provided by the plurality of angle steel stand columns and the supporting component in cooperation with the prefabricated formwork, so that the prefabricated formwork can be kept in a stable state, the prefabricated formwork is not prone to deformation, the stability of the whole bridge main tower construction platform is ensured, and the risk of safety accidents is reduced;

2. this application is when concreting, one end fixed connection through with the pull rod is in pre-buried muscle, the other end fixed connection of pull rod is in the angle steel stand, make zonulae occludens between angle steel stand and the pre-buried steel sheet, thereby make the concrete when producing the lateral pressure to prefabricated panel, the angle steel stand can produce the pulling force opposite with lateral pressure opposite direction through the pull rod to prefabricated panel, and then make every prefabricated panel can remain stable, be difficult for taking place to shift, thereby make whole prefabricated template remain stable, and prefabricated template is difficult for taking place deformation.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a partial sectional view of the present embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic diagram for embodying the matching relationship between the angle steel upright post and the prefabricated formwork.

Description of reference numerals: 1. side slope; 2. a foundation pit; 3. a horizontal step; 4. a base mat layer; 41. a gravel cushion layer; 42. a plain concrete cushion layer; 5. a drain pipe; 6. prefabricating a template; 61. prefabricating a panel; 62. decorating the surface; 63. a wire mesh; 7. Angle steel upright posts; 8. a connecting rod; 9. pre-embedding ribs; 10. a pull rod; 11. a diagonal bar; 12. and (4) mounting the groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The utility model provides a bubble mixes light soil barricade concrete prefabricated template structure, refer to fig. 1 and fig. 2, including excavation foundation ditch 2 on side slope 1 and set up the multistage horizontal step 3 in foundation ditch 2, foundation ditch 2 is located the inclined plane of side slope 1, and foundation ditch 2 is the setting of cuboid form, multistage horizontal step 3 all sets up along the length direction of foundation ditch 2, the length of foundation ditch 2 is greater than the length of horizontal step 3, and multistage horizontal step 3 is echelonment evenly distributed along the direction from the bottom of foundation ditch 2 towards the top of foundation ditch 2.

Referring to fig. 1 and 2, a foundation mat layer 4 is disposed at the bottom of the foundation pit 2, the foundation mat layer 4 is disposed along the circumferential direction of the foundation pit 2, and the foundation mat layer 4 surrounds the circumferential side of the horizontal step 3. Referring to fig. 1, the foundation mat 4 includes a crushed stone mat layer 41 laid on the bottom side of the foundation pit 2 and a plain concrete mat layer 42 provided on the crushed stone mat layer 41. In this embodiment, the thickness of the stone pad 41 is 15cm, and in other embodiments, the thickness of the stone pad 41 can be increased or decreased correspondingly according to actual requirements. The strength of the plain concrete cushion 42 is C20, and the plain concrete cushion 42 covers the crushed stone cushion 41 on the side away from the bottom side of the foundation pit 2.

Referring to fig. 2 and 3, the gravel cushion 41 is provided with two water outlets for discharging the groundwater in the gravel cushion 41 out of the foundation pit 2, and the two water outlets are symmetrically arranged on two sides of the gravel cushion 41 in this embodiment. The drain port department intercommunication has drain pipe 5, and drain pipe 5 sets up along the width direction of foundation ditch 2, and the one end that drain pipe 5 kept away from the outlet stretches out prefabricated template 6 outer back and external drainage facility intercommunication. In this embodiment, the drain pipe 5 is a PVC pipe with a diameter of 7.5cm, and one end of the drain pipe 5 extending into the gravel cushion 41 is wrapped with a permeable geotextile.

Referring to fig. 2 and 3, a prefabricated template 6 is arranged on the plain concrete cushion 42, the prefabricated template 6 is arranged along the circumferential direction of the plain concrete cushion 42, the prefabricated template 6 surrounds the edge of the foundation pit 2, and one side of the prefabricated template 6 departing from the plain concrete cushion 42 is flush with the top surface of the side slope 1. The edge of the plain concrete cushion layer 42 is provided with a mounting groove 12 for positioning and mounting the prefabricated template 6, the section of the mounting groove 12 is cuboid, and the size of the mounting groove 12 is matched with the thickness of the prefabricated template 6.

Referring to fig. 2 and 4, the prefabricated formwork 6 includes a plurality of prefabricated panels 61, and in combination with fig. 1, the plurality of prefabricated panels 61 are spliced by horizontal staggered joints to form the complete prefabricated formwork 6. The prefabricated panel 61 is arranged in a cuboid shape, a decorative surface 62 is arranged on the prefabricated panel 61, and the decorative surface 62 is positioned on one side of the prefabricated foundation pit 2. Still be provided with wire netting 63 in the prefabricated panel 61, wire netting 63's size and prefabricated template 6 looks adaptation. The arrangement of wire netting 63 can increase the overall strength of prefabricated panel 61, and prefabricated panel 61 is difficult for ftractureing. In addition, in the construction process, two adjacent prefabricated panels 61 should combine closely, prefabricated template 6 that prefabricated panel 61 assembled and formed need level and smooth pleasing to the eye, can collude the concave joint between two adjacent panels, also can collude the flush joint, and the flush joint should be smooth, round, pleasing to the eye.

Referring to fig. 2 and 4, a plurality of angle steel columns 7 are further arranged in the foundation pit 2, the angle steel columns 7 are all vertically arranged, and referring to fig. 1, the angle steel columns 7 are uniformly distributed along the circumferential direction of the foundation pit 2, and the angle steel columns 7 are all located on one side, facing the foundation pit 2, of the prefabricated formwork 6. One end of the angle steel upright post 7 is fixedly connected to the plain concrete cushion layer 42, and the other end of the angle steel upright post 7 is flush with the top surface of the prefabricated formwork 6. Still be provided with in the foundation ditch 2 and be used for connecting up a plurality of angle steel stands 7 connecting rod 8 in proper order, connecting rod 8 sets up along the circumference direction of foundation ditch 2, and a plurality of equal fixed connection in connecting rod 8 of angle steel stand 7.

Referring to fig. 1 and 4, a support assembly for offsetting the horizontal side pressure generated when concrete is poured is disposed between the prefabricated formwork 6 and the angle steel upright 7. In this embodiment, the number of the supporting components is a plurality of groups, and the plurality of groups of supporting components correspond to the plurality of prefabricated panels 61 one to one, that is, a group of supporting components is disposed on each prefabricated panel 61. Specifically, the supporting component comprises a plurality of embedded ribs 9 fixedly arranged on the prefabricated panel 61 and a plurality of pull rods 10 fixedly arranged on the embedded ribs 9, the plurality of embedded ribs 9 are in one-to-one correspondence with the plurality of pull rods 10, and the plurality of embedded ribs 9 are all positioned on one side of the prefabricated panel 61 departing from the decorative surface 62. In this embodiment, the number of embedded bars 9 and pull rod 10 is four, and the equal fixed connection in wire netting 63 of the one end of four embedded bars 9, and the one end of four embedded bars 9 stretches out outside prefabricated panel 61. One end of the pull rod 10 is welded on the embedded rib 9, and the other end of the pull rod 10 is welded on the side wall of the angle steel upright post 7.

In addition, referring to fig. 2 and 4, a plurality of diagonal rods 11 are further arranged on the angle iron upright 7, the plurality of diagonal rods 11 are all located on one side of the angle iron upright 7, which is far away from the pull rod 10, the plurality of diagonal rods 11 are all arranged obliquely downwards, and the plurality of diagonal rods 11 are evenly distributed along the length direction of the angle iron upright 7.

The implementation principle of the application is as follows: during the construction, fix a position prefabricated panel 61 through mounting groove 12, make prefabricated panel 61 install fast to pass through mortar stagger joint concatenation with a plurality of prefabricated templates 6, make prefabricated panel 61 form around the prefabricated template 6 of foundation ditch 2 week side. Weld the embedded muscle 9 on prefabricated panel 61 through the one end with pull rod 10, and the other end of pull rod 10 welds in angle steel stand 7, make angle steel stand 7 can both produce the pulling force to every prefabricated panel 61 through pull rod 10, a plurality of angle steel stands 7 cooperation produce the pulling force to whole prefabricated form 6 promptly, make when concreting, the pulling force that a plurality of root angle steel stands 7 cooperations produced whole prefabricated form 6 can offset the concrete and produce the side pressure to prefabricated form 6, thereby make the difficult emergence of monolithic prefabricated panel 61 shift, prefabricated form 6 is difficult for taking place deformation promptly, and then the quality of concreting has been guaranteed, the realization is to the protection of side slope 1. Meanwhile, the water in the gravel cushion 41 is drained to an external drainage system through the drainage pipe 5, so that the water in the concrete can be drained through the drainage pipe 5, and the influence on the stability of the whole bridge main tower construction platform due to water seepage is avoided.

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 utility model provides a bubble mixes light retaining wall concrete prefabricated template structure which characterized in that: including excavating foundation ditch (2) on side slope (1) and setting up multistage horizontal step (3) in foundation ditch (2), it is multistage horizontal step (3) are the echelonment along the direction from the bottom of foundation ditch (2) to the top of foundation ditch (2) and distribute, the bottom side of foundation ditch (2) is provided with foundation bed course (4), be provided with prefabricated template (6) on foundation bed course (4), prefabricated template (6) encircle the border department in foundation ditch (2), still be provided with a plurality of angle steel stands (7) on foundation bed course (4), the circumference direction evenly distributed of foundation ditch (2) is followed to a plurality of angle steel stands (7), and a plurality of angle steel stands (7) are located one side that prefabricated template (6) towards foundation ditch (2), be provided with the supporting component that is used for offsetting the horizontal side pressure that produces when pouring the concrete between prefabricated template (6) and angle steel stand (7).

2. The structure of the prefabricated concrete form of the bubble-mixed lightweight concrete retaining wall according to claim 1, wherein: the prefabricated formwork (6) comprises a plurality of prefabricated panels (61), and the prefabricated panels (61) are spliced by adopting horizontal staggered joints.

3. The structure of the prefabricated formwork for a bubble-mixed lightweight concrete retaining wall according to claim 2, wherein: the supporting component comprises a plurality of embedded ribs (9) fixedly arranged on the prefabricated panel (61) and a plurality of pull rods (10) fixedly arranged on the embedded ribs (9), wherein the embedded ribs (9) correspond to the pull rods (10) one by one, the embedded ribs (9) are fixedly arranged on one side, facing the angle steel stand column (7), of the prefabricated panel (61), and one end, far away from the embedded ribs (9), of each pull rod (10) is fixedly connected to the angle steel stand column (7).

4. The structure of the prefabricated formwork for a bubble-mixed lightweight concrete retaining wall according to claim 2, wherein: still be provided with down tube (11) on angle steel stand (7), the one end of down tube (11) is fixed to be set up in one side that angle steel stand (7) deviate from prefabricated panel (61), just the other end of down tube (11) is the slope and sets up downwards.

5. The structure of the prefabricated concrete form of the bubble-mixed lightweight concrete retaining wall according to claim 1, wherein: still be provided with in foundation ditch (2) and be used for connecting up connecting rod (8) in proper order a plurality of angle steel stand (7), connecting rod (8) set up along the circumferential direction of foundation ditch (2), and a plurality of equal fixed connection in connecting rod (8) of angle steel stand (7).

6. The structure of the prefabricated formwork for a bubble-mixed lightweight concrete retaining wall according to claim 1, wherein: the foundation cushion layer (4) comprises a gravel cushion layer (41) paved on the foundation pit (2) and a plain concrete cushion layer (42) arranged on the gravel cushion layer (41).

7. The structure of the prefabricated concrete form of the bubble-mixed lightweight concrete retaining wall according to claim 6, wherein: the gravel cushion layer (41) is provided with a water outlet for discharging underground water in the gravel cushion layer (41), the water outlet is communicated with a water drain pipe (5), the water drain pipe (5) is arranged along the width direction of the foundation pit (2), and one end, far away from the water outlet, of the water drain pipe (5) extends out of the prefabricated template (6) and then is communicated with an external water drainage facility.

8. The structure of the prefabricated concrete form of the bubble-mixed lightweight concrete retaining wall according to claim 6, wherein: and the plain concrete cushion layer (42) is provided with a positioning groove for positioning and installing the prefabricated template (6).