CN212956136U

CN212956136U - Cast-in-place bridge bearing structure on abrupt slope

Info

Publication number: CN212956136U
Application number: CN202020867685.0U
Authority: CN
Inventors: 麦理炫; 梁戈; 张文悦; 陈健平; 詹潮洲; 冯亦文; 梁文雄; 林学辉
Original assignee: Guangdong Provincial Architectural Engineering Machinery Construction Co Ltd
Current assignee: Guangdong Provincial Architectural Engineering Machinery Construction Co Ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-04-13
Anticipated expiration: 2030-05-21

Abstract

The utility model discloses a cast-in-situ bridge supporting structure on a steep slope, which comprises a step structure and a bracket, wherein the step structure comprises a plurality of steps, a concrete retaining wall is arranged at the outer side of each step, and a concrete hardening layer is arranged on each step; the lower end of the support is supported on the concrete hardening layer of each step, and the top end of the support is supported below a mould of the cast-in-place bridge. The utility model is used for the support of template during cast-in-place bridge on the abrupt slope to pour the reinforced concrete bridge in the template.

Description

Cast-in-place bridge bearing structure on abrupt slope

Technical Field

The utility model relates to a bridge construction technical field, concretely relates to cast-in-place bridge bearing structure on abrupt slope.

Background

The cast-in-place bridge is a common construction method in bridge construction, and the cast-in-place bridge needs to be cast by installing a template on site, and the template needs to be supported on the ground with the lower part capable of bearing force through a support. For a common field, the bridge is positioned above the field on the horizontal plane, the erection of the support on the field on the horizontal plane to support the template is easy, the erection of the steel pipe fastener type support can support the template on the horizontal plane, and the concrete bridge is poured in the template. But to the place that the bridge below is the abrupt slope structure, the support still receives the horizontally load when directly setting up the support on the place of abrupt slope structure, influences the stability of support atress to influence the stability of top template, influence the bridge and pour.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem to not enough in the background art, provide a cast-in-place bridge bearing structure on abrupt slope that can solve.

In order to solve the technical problem, the technical scheme of the utility model is that: a cast-in-place bridge supporting structure on a steep slope comprises a step structure and a support, wherein the step structure comprises multiple steps, a concrete retaining wall is arranged on the outer side of each step, and a concrete hardened layer is arranged on each step; the lower end of the support is supported on the concrete hardening layer of each step, and the top end of the support is supported below a mould of the cast-in-place bridge.

Further, the support comprises a plurality of vertical support bars and a plurality of scissor sway bars, each scissor sway bar being connected between each vertical support bar.

Further, the vertical supporting rods are coil buckle vertical rods, and the steps are distributed in an arc shape.

Furthermore, the support comprises a plurality of unit groups, each step is provided with one unit group, and the unit groups are connected together through a connecting rod.

Further, the concrete retaining wall is connected with the concrete hardened layer.

Furthermore, an anchor rod is connected to the concrete retaining wall, one end of the anchor rod is connected to the concrete retaining wall, and the other end of the anchor rod is anchored into the mountain under the step structure.

The utility model discloses the beneficial effect who realizes mainly has following several: the steep hill is excavated into a multistage horizontal step structure to install the fixed support, the support is supported on the horizontal step, horizontal load is avoided, and the support can be guaranteed to be supported on the hill stably, so that the stability of the template is guaranteed, and the pouring of the reinforced concrete bridge is guaranteed. In addition, the concrete retaining wall is arranged on the outer side of the step and is used for blocking the outer side of the step, so that the support capability of the step on the support is prevented from being influenced by the soil loss of the step; be provided with the concrete sclerosis layer on the step, stronger, more stable to the support capacity of support, form stable cast-in-place bridge bearing structure from this, support below the template, guarantee pouring of cast-in-place bridge on the abrupt slope.

Drawings

Fig. 1 is a schematic front view of a cast-in-place bridge support structure on a steep slope in an embodiment of the present invention;

fig. 2 is the utility model discloses in steep slope cast-in-place bridge bearing structure's overlook schematic structure (not including cast-in-place bridge template).

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.

Detailed Description

To facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.

Example one

Referring to fig. 1 and 2, a cast-in-place bridge supporting structure on a steep slope is used for supporting a formwork when a bridge is cast-in-place on the steep slope, so that a reinforced concrete bridge is cast in the formwork. The cast-in-place bridge supporting structure on the steep slope comprises a step structure 1 and supports 2, wherein the step structure 1 is formed by excavating on a mountain body 4 below the bridge, multiple levels of horizontal steps 11 are excavated according to the slope and the slope length of the steep slope, the fixed supports 2 are installed on the steps 11 at all levels, the supports 2 support a template 5 above, the template is stably supported on the mountain body 4 below, and then the reinforced concrete bridge is poured in the template 5. A mountain body of a steep slope is excavated into a multi-level horizontal step structure to install the fixed support 1, the support 1 is supported on the horizontal step, horizontal load is avoided, and the support 2 can be guaranteed to be supported on the mountain body stably, so that the stability of a template is guaranteed, and the pouring of a reinforced concrete bridge is guaranteed.

Referring to fig. 1, a concrete retaining wall 12 is disposed on an outer side of each step 11, and is blocked by the outer side of each step 11, so that the support capability of the step 11 on the support 2 is prevented from being affected by the soil loss of the step. Be provided with concrete hardening layer 13 on the step 11, concrete hardening layer 13 forms holistic concrete slab at step 11 upper surface, and intensity is stronger than the soil bench originally, is the concrete hardening layer 13 atress of whole step 11 upper surface during support bracket 2 moreover, and is stronger, more stable to support capability of support bracket 2. Therefore, the lower end of the support 2 is supported on the concrete hardening layer 13 of each step 11, the top end of the support 2 is supported below a mould of the cast-in-place bridge, a stable cast-in-place bridge supporting structure is formed and supported below the template 5, and the casting of the cast-in-place bridge on the steep slope is guaranteed.

Referring to fig. 1, as a further preferred scheme, the concrete retaining wall 12 is connected with the concrete hardened layer 13, and the concrete retaining wall 12 and the concrete hardened layer 13 are preferably cast at one time by using an integral reinforced concrete structure, so that the step structure has stronger stress capacity, the support of the bracket 2 is more stable, the template 5 is supported more reliably, and the casting effect of the concrete bridge is further ensured.

Referring to fig. 1, as a further preferred scheme, in order to further improve the stress and the supporting capability of the stepped structure, an anchor rod 3 is connected to the concrete retaining wall 12, one end of the anchor rod 3 is connected to the concrete retaining wall 12, and the other end of the anchor rod 3 is anchored into the mountain under the stepped structure 1, so that the anchor rod is used to pull and fix the concrete retaining wall 12 in the mountain, and the stress and the supporting capability of the stepped structure can be further improved.

Referring to fig. 1, as a further preferred scheme, the support frame 2 comprises a plurality of vertical support rods 21 and a plurality of scissor diagonal support rods 22, and each scissor diagonal support rod 22 is connected between the vertical support rods 21, so that the stability of the support of the formwork 5 is ensured by connecting the plurality of vertical support rods 21 and the plurality of scissor diagonal support rods 22 together to form a stable support frame. In addition, can also set up transverse connection rod and connect between vertical support rod 21, guarantee support 2's wholeness, further improve support 2's stability.

Referring to fig. 1 and 2, for a general straight bridge, a straight upper step structure is provided under the straight bridge to support a bracket 2, and the bracket 2 is supported on each step of the straight upper step structure. For pouring of the ramp bridge, the bridge is of an arc structure, the template 5 is also of an arc structure, the step structures 1 are also distributed below the arc ramp bridge in an arc shape, and the steps 11 are sequentially distributed in an arc shape. The vertical supporting rods 21 are preferably coiled and buckled vertical rods, a plurality of transverse connecting rods are connected to the coiled and buckled vertical rods and then supported below the formwork 5, and the scissors inclined supporting rods 22 are connected among the coiled and buckled vertical rods, so that the installation of the arc-shaped support under the arc-shaped ramp bridge is facilitated.

Referring to fig. 1 and 2, for the casting of the ramp bridge with a large radian, the bracket 2 is preferably provided with a plurality of unit groups 23, each step 11 is provided with one unit group 23, each unit group comprises one or more disc buckle upright rods, and the unit groups are connected together through a connecting rod 24. When the support is erected or dismantled, each unit group 23 is erected or dismantled independently, each unit group 23 is erected in groups, and then the unit groups are connected together through connecting rods; when the unit groups are dismantled, the connecting rods connected among the unit groups are dismantled, and then the unit groups 23 are dismantled respectively. The support 2 with the structure can be convenient for building and dismantling the support when pouring the ramp bridge with a large radian.

When the cast-in-place bridge on the steep slope of this embodiment is under construction, calculate and confirm the slope line according to the geological conditions of steep slope earlier, then excavate multistage step on the slope line, pour concrete retaining wall 12 and concrete hardened layer 13 on step at different levels afterwards, set up support 2 on concrete hardened layer 13 after concrete retaining wall 12 and concrete hardened layer 13 reach design strength, again support 2 upper support template 5, install the reinforcing bar in the template after 5 good templates, the concrete bridge of pouring forms, it can to remove support 2 and template 5 after the concrete bridge reaches set strength. After the bridge is poured, the concrete hardened layer 13 under the bridge can be broken, and green plants are planted to restore the ecological environment.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a cast-in-place bridge bearing structure on abrupt slope which characterized in that: the concrete retaining wall structure comprises a step structure (1) and a support (2), wherein the step structure (1) comprises a plurality of steps (11), a concrete retaining wall (12) is arranged on the outer side of each step (11), and a concrete hardened layer (13) is arranged on each step (11); the lower end of the support (2) is supported on the concrete hardening layer (13) of each step (11), and the top end of the support (2) is supported below a mould of the cast-in-place bridge.

2. The cast-in-place bridge supporting structure on the steep slope according to claim 1, wherein: the support (2) comprises a plurality of vertical supporting rods (21) and a plurality of scissor inclined supporting rods (22), and each scissor inclined supporting rod (22) is connected between the vertical supporting rods (21).

3. The cast-in-place bridge supporting structure on the steep slope according to claim 2, wherein: the vertical supporting rods (21) are coil buckle vertical rods, and the steps (11) are distributed in an arc shape.

4. The cast-in-place bridge supporting structure on the steep slope according to claim 3, wherein: the support (2) comprises a plurality of unit groups (23), each step (11) is provided with one unit group (23), and the unit groups are connected together through a connecting rod (24).

5. The cast-in-place bridge supporting structure on the steep slope according to any one of claims 1 to 4, wherein: the concrete retaining wall (12) is connected with the concrete hardening layer (13).

6. The cast-in-place bridge supporting structure on the steep slope according to claim 5, wherein: the concrete retaining wall is characterized in that an anchor rod (3) is connected to the concrete retaining wall (12), one end of the anchor rod (3) is connected to the concrete retaining wall (12), and the other end of the anchor rod (3) is anchored into the mountain under the step structure (1).