A lateral pressure resisting device for a bridge pier

Abstract

The utility model discloses a kind of lateral pressure preventing devices for bridge pier column interval temporary road, belong to bridge engineering technical field, it includes two pile head, stable structure and limiting structure. Two pile heads are located on same horizontal straight line with two cylindrical piers and interval 5-10cm. Stable structure contains at least two upper and lower opposite fixing pieces, and the both ends of fixing piece are circular arc structure, cross and tightly stick to the outside of pile head, and the middle part is parallel straight edge structure. Limiting structure includes two limiting components, each limiting component contains at least three ground interval insertion limiting steel bars, and limiting steel bar surrounds and tightly sticks to the lower part of the sidewall of pile head. Two pile heads form filling area. The utility model can effectively block temporary road lateral pressure transmission to cylindrical pier, guarantee construction safety.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to an anti-lateral pressure device for a temporary passage between bridge piers. Background Technology

[0002] During the construction of highway bridge projects, in order to facilitate the passage of vehicles and machinery and reduce construction transportation costs, it is often necessary to build longitudinal access roads around the main line. The construction team usually chooses to fill the space between two cylindrical piers with soil or slag to build longitudinal access roads.

[0003] However, the sidewalk generates significant lateral pressure during heavy vehicle traffic, which can be transmitted to the cylindrical supports, potentially causing them to shift and damage, leading to major safety hazards and economic losses. Therefore, a device is needed to effectively prevent the transmission of lateral pressure from the sidewalk to the cylindrical supports, thus solving the aforementioned problem. Utility Model Content

[0004] This invention proposes an anti-lateral pressure device for temporary access roads between bridge piers, in order to solve the problem in the prior art that the lateral pressure generated by heavy vehicles when constructing temporary access roads between two cylindrical piers can easily damage the cylindrical piers.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A lateral pressure prevention device for a temporary access road between bridge piers is provided. The device is located between two cylindrical piers under the same cap beam and includes two pile heads, a stabilizing structure, and a limiting structure. The two pile heads and the two cylindrical piers are located on the same horizontal line, with a distance of 5-10 cm between each pile head and the two cylindrical piers. The stabilizing structure includes at least two vertically opposite fixing members, each with arc-shaped ends that cross over and are tightly attached to the outer sides of the two pile heads, and two parallel straight edges in the middle. The limiting structure includes two limiting components. One limiting component is installed between each pile head and its adjacent cylindrical pier. Each limiting component includes at least three limiting reinforcing bars inserted at intervals into the ground, all of which surround and are tightly attached to the lower sidewall of the pile head. The area between the two pile heads is filled with earth or slag.

[0006] Furthermore, the pile head is a concrete structure with a height of 90-110cm cut out after the pile foundation construction.

[0007] Furthermore, the diameter of the pile head is 15-25cm larger than that of the cylindrical pier.

[0008] Furthermore, the limiting component includes 3-5 limiting steel bars with a diameter greater than 2cm.

[0009] Furthermore, the embedment depth of the limiting steel bar is at least 100cm, and the exposed height is at least 30cm.

[0010] Furthermore, the stabilizing structure includes two fasteners, respectively located at 1 / 4 and 3 / 4 of the height of the pile head.

[0011] Furthermore, the fastener is composed of a single steel bar or steel strand with a diameter greater than 2cm, bent end to end and connected together.

[0012] Furthermore, the fastener is composed of at least three parallel steel bars or steel strands with a diameter of 0.6-1.0 cm, bent end to end.

[0013] Furthermore, several auxiliary steel bars are inserted below the fixing member at the pile head, and the fixing member is placed on the several auxiliary steel bars.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects: 1. This utility model can effectively protect the cylindrical pier structure. Through the synergistic effect of the pile head, stabilizing structure and limiting structure, the lateral pressure generated by the access road is concentrated at the pile head, avoiding the pressure from being transmitted to the cylindrical pier. This prevents the cylindrical pier from being pushed and damaged due to lateral pressure, protects the integrity of the bridge pier, reduces the risk of bridge structural safety problems caused by pier damage, and avoids traffic accidents that may be caused by unstable piers during heavy vehicle traffic. It also eliminates major safety hazards during construction and traffic.

[0015] 2. The anti-lateral pressure device proposed in this utility model has a simple structure. The pile head used is a concrete structure cut out after the pile foundation construction, realizing the on-site sourcing and recycling of construction waste, reducing the generation of construction waste, lowering material procurement costs, and conforming to the concept of green construction. The fixing parts and limiting steel bars are common building materials, easy to obtain and process, and the installation process is simple, without significantly affecting the original construction progress, thus improving the convenience of access road construction. 3. This utility model can effectively enhance structural stability. The fixing component in the stabilizing structure clamps the pile head from the side to form a constraint, and the limiting steel bar of the limiting component surrounds and fixes the pile head from the bottom. The multiple fixing methods greatly improve the stability of the pile head itself, effectively resist the lateral pressure transmitted by the access road, and ensure the overall structural stability of the device.

[0016] 4. This utility model can adapt to complex construction environments. The device is suitable for scenarios where a temporary road is built between two cylindrical piers. It can be applied flexibly, solves the problem of temporary road construction in special environments, and improves the adaptability and flexibility of bridge engineering construction. 5. This utility model can effectively extend the service life of bridges. By protecting the cylindrical piers from lateral pressure damage, it reduces the structural wear of the piers, indirectly extending the overall service life of the bridge and reducing the frequency and cost of subsequent bridge maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation of the anti-side pressure device proposed in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the installation of the fastener proposed in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the installation of the limiting steel bar proposed in Embodiment 1 of this utility model; The attached diagram is labeled as follows: 1-Cylindrical pier, 2-Pile head, 3-Fixing component, 4-Limiting reinforcement, 5-Earthwork or slag, 6-Auxiliary reinforcement, 7-Pile foundation, 8-Ground surface, 9-Cap beam. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0019] like Figure 1-3 As shown, an anti-lateral pressure device for a temporary access road between bridge piers is provided. The anti-lateral pressure device is located between two cylindrical piers 1 below the same cap beam 9, and includes two pile heads 2, a stabilizing structure and a limiting structure.

[0020] Two pile heads 2 and two cylindrical piers 1 are located on the same horizontal line, with a distance of 5-10 cm between each pile head 2 and each cylindrical pier 1. The pile heads 2 are concrete structures with a height of 90-110 cm cut out after the construction of the pile foundation 7. The diameter of the pile head 2 is 15-25 cm larger than that of the cylindrical pier 1. In this embodiment, the two pile heads 2 are 8 cm apart from each cylindrical pier 1, the height of the pile head 2 is 100 cm, and the diameter of the pile head 2 is 20 cm larger than that of the cylindrical pier 1.

[0021] During bridge construction, a certain length of pile head 2 is reserved during the construction of pile foundation 7. After pile foundation 7 reaches its design strength, the excess part is removed through cutting to ensure the quality of the connection between pile foundation 7 and the superstructure. These cut-out pile heads 2 themselves possess a certain strength and integrity. In this utility model, the concrete structure generated in this prior art is used as a component of the anti-lateral pressure device, eliminating the need for additional specially made pile bodies. This is a rational use of components generated during construction.

[0022] The stabilizing structure includes at least two vertically opposite fixing members 3. The two ends of each fixing member 3 are arc-shaped structures, respectively spanning and tightly abutting the outer sides of the two pile heads 2, while the middle section consists of two parallel straight edges. Each fixing member 3 is constructed by bending a single steel bar or steel strand with a diameter greater than 2cm and connecting them end-to-end. In this embodiment, the stabilizing structure includes two fixing members 3, respectively positioned at 1 / 4 and 3 / 4 heights of the pile heads 2. Each fixing member 3 is constructed by bending a single steel bar with a diameter of 3cm and connecting them end-to-end.

[0023] In addition, several auxiliary steel bars 6 are inserted below the fixing member 3 at the pile head 2, and the fixing member 3 is placed on the auxiliary steel bars 6. The setting of the auxiliary steel bars 6 can provide stable support for the fixing member 3, prevent the fixing member 3 from shifting or loosening during the stress process, further enhance the constraint effect of the stable structure on the pile head 2, and ensure the overall stress balance of the device.

[0024] In other embodiments, the fastener 3 may also be composed of at least three parallel steel bars or steel strands with a diameter of 0.6-1.0 cm, bent end to end. In other embodiments, the fastener 3 is composed of three parallel steel strands with a diameter of 0.8 cm, bent end to end.

[0025] The limiting structure includes two limiting components. One limiting component is installed between the pile head 2 and its adjacent cylindrical pier 1. Each limiting component includes at least three limiting steel bars 4 spaced apart and inserted into the ground 8. All limiting steel bars 4 are arranged around and tightly against the lower sidewall of the pile head 2. Specifically, each limiting component includes 3-5 limiting steel bars 4 with a diameter greater than 2cm, a minimum embedment depth of 100cm, and a minimum exposed height of 30cm. In this embodiment, the limiting component includes 5 limiting steel bars 4 with a diameter of 3cm, a embedment depth of 100cm, and an exposed height of 30cm.

[0026] The area between the two pile heads 2 forms a filling zone for earthwork or slag 5, which becomes part of the access road after being filled with earthwork or slag 5. When heavy vehicles pass over the access road, significant lateral pressure is generated, which is transmitted to the pile heads 2 on both sides. The pile heads 2 are fixed by the fasteners 3 and limited by the limiting steel bars 4. The internal resistance of the horizontal stress is balanced, preventing transmission to the cylindrical pier 1. The cylindrical pier 1 does not bear any lateral pressure, eliminating safety hazards. Specifically, the fasteners 3 clamp the pile heads 2 laterally, forming a constraint, while the limiting steel bars 4 surround and fix the pile heads 2 from below. This multiple fixing method significantly improves the stability of the pile heads 2, effectively resisting the lateral pressure transmitted from the access road and ensuring the overall structural stability of the device.

[0027] This utility model can effectively protect the structure of the cylindrical pier 1. Through the synergistic effect of the pile head 2, the stabilizing structure and the limiting structure, the lateral pressure generated by the access road is concentrated at the pile head 2, preventing the pressure from being transmitted to the cylindrical pier 1, preventing the cylindrical pier 1 from being pushed and damaged due to lateral pressure, protecting the integrity of the bridge pier, reducing the risk of bridge structural safety problems caused by pier damage, and avoiding traffic accidents that may be caused by unstable piers during heavy vehicle traffic, thus eliminating major safety hazards during construction and traffic.

[0028] The anti-lateral pressure device proposed in this utility model has a simple structure. The pile head 2 is a concrete structure cut out after the construction of the pile foundation 7, which realizes the on-site sourcing and recycling of construction waste materials, reduces the generation of construction waste, lowers material procurement costs, and conforms to the concept of green construction. The fixing component 3 and the limiting steel bar 4 are both common building materials, which are easy to obtain and process. The installation process is simple and will not have a significant impact on the original construction progress, thus improving the convenience of access road construction. Furthermore, it should be noted that in other embodiments, if the access road is filled to a height exceeding 1m, i.e., exceeding the height of the pile head (in this embodiment, the pile head height is 1m), a slope of 1:1.5 can be applied, with the toe of the slope at least 50cm away from the outer slope of the pile head. Alternatively, a pressure-measuring device can be added directly above the original device according to the above scheme, and the limiting steel bars corresponding to the pile head of the newly added device can be removed.

[0029] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A lateral pressure prevention device for a temporary access road between bridge piers, characterized in that: The anti-lateral pressure device is located between two cylindrical piers under the same cap beam. It includes two pile heads, a stabilizing structure, and a limiting structure. The two pile heads and the two cylindrical piers are located on the same horizontal line, and the two pile heads are spaced 5-10 cm apart from the two cylindrical piers. The stabilizing structure includes at least two fixing members arranged vertically opposite each other. The two ends of the fixing members are arc-shaped structures that cross over and are tightly attached to the outer sides of the two pile heads, and the middle part is a structure with two parallel straight edges. The limiting structure includes two limiting components. A limiting component is installed between the pile head and its adjacent cylindrical pier. The limiting component includes at least three limiting steel bars inserted at intervals in the ground. All limiting steel bars are arranged around and tightly attached to the lower side wall of the pile head. The area between the two pile heads is filled with earth or slag.

2. The anti-lateral pressure device for a temporary passage between bridge piers according to claim 1, characterized in that: The pile head is a concrete structure with a height of 90-110cm cut out after the pile foundation construction.

3. The anti-lateral pressure device for a temporary passage between bridge piers according to claim 1, characterized in that: The diameter of the pile head is 15-25cm larger than that of the cylindrical pier.

4. The anti-lateral pressure device for a temporary passage between bridge piers according to claim 1, characterized in that: The limiting component includes 3-5 limiting steel bars with a diameter greater than 2cm.

5. A lateral pressure prevention device for a temporary access road between bridge piers according to claim 1, characterized in that: The embedment depth of the limiting steel bar is at least 100cm, and the exposed height is at least 30cm.

6. A lateral pressure prevention device for a temporary access road between bridge piers according to claim 1, characterized in that: The stabilizing structure includes two fasteners, which are respectively installed at 1 / 4 and 3 / 4 of the height of the pile head.

7. A lateral pressure prevention device for a temporary access road between bridge piers according to claim 1, characterized in that: The fastener is made of a single steel bar or steel strand with a diameter greater than 2cm, bent end to end and connected together.

8. A lateral pressure prevention device for a temporary access road between bridge piers according to claim 1, characterized in that: The fastener is composed of at least three parallel steel bars or steel strands with a diameter of 0.6-1.0 cm, bent end to end.

9. A lateral pressure prevention device for a temporary passage between bridge piers according to claim 1, characterized in that: The pile head has several auxiliary steel bars inserted below the fixing member, and the fixing member is placed on the several auxiliary steel bars.

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