Highway bridge construction foundation pit protection component

Abstract

The utility model discloses a highway bridge construction foundation pit protection component relates to highway bridge construction technical field, including short fender, long fender, baffle and diagonal bracing, short fender and long fender are alternately arranged on the four lateral walls of foundation pit, the back of long fender and short fender is provided with baffle, the four corners of foundation pit are provided with diagonal bracing, and the both ends of diagonal bracing are overlapped on two baffles perpendicular to each other, the utility model discloses that short fender and long fender are alternately arranged on the four lateral walls of foundation pit, and the fastener connection of combining baffle and diagonal bracing makes the support force evenly distributed, effectively prevents the collapse caused by local stress concentration, and the diagonal bracing is overlapped on the vertical baffle on the four corners of foundation pit, forms rigid support frame, can resist the lateral pressure of soil, improves integral anti -seismic and anti -deformation performance, and four -corner support makes the upper part of foundation pit reserve opening bigger, guarantees the smooth approach and use of material and equipment.

Description

Technical Field

[0001] This utility model relates to the field of highway bridge construction technology, specifically a protective component for highway bridge construction pits. Background Technology

[0002] As a core component of modern transportation infrastructure, highway bridges play an irreplaceable role in promoting regional economic development and ensuring travel safety. Their construction involves complex foundation engineering, with the foundation pit being a crucial link supporting bridge piers, abutments, and other structures, directly affecting the overall stability and durability of the project. However, foundation pit excavation often faces challenges such as variable geology and high soil lateral pressure, necessitating reliable protective measures to prevent collapse risks. In highway bridge construction, the construction pit typically needs to extend deep underground to form a stable foundation space. Existing protective components mostly use uniformly arranged protective plates, fixed between opposing plates by internal supports. This method divides the foundation pit space into multiple small spaces by the internal supports, affecting the entry of materials and the operation of equipment during construction. Materials and equipment are prone to collisions with the internal supports, leading to damage to the foundation pit protective components and increasing the risk of foundation pit collapse. Furthermore, anchor bolts are often of a single length, making it difficult to penetrate deep into the soil to form multi-layered anchorage, thus failing to guarantee long-term protective effects. Utility Model Content

[0003] The purpose of this utility model is to provide a protective component for the foundation pit of highway bridge construction, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution; A protective component for a highway bridge construction pit includes short guard plates, long guard plates, retaining bars, and diagonal braces. The short and long guard plates are alternately installed on the four side walls of the pit. Retaining bars are installed on the back of the long and short guard plates. Diagonal braces are installed at the four corners of the pit. The two ends of the diagonal braces overlap two mutually perpendicular retaining bars. Fasteners are installed between the retaining bars and the diagonal braces, and the retaining bars and diagonal braces are connected by fasteners. A diagonal tie rod is installed on the outer side of the pit, directly opposite the long guard plate. One end of the diagonal tie rod is hinged to the long guard plate, and the other end of the diagonal tie rod is hinged to a base plate. The base plate has mounting holes, and barbed anchor rods inserted into the ground are installed in the mounting holes. Long anchor rods and short anchor rods are installed on the short and long guard plates, and both the long and short anchor rods are horizontally inserted into the soil on the side of the pit.

[0005] As a further embodiment of this utility model: both the short guard plate and the long guard plate include a flat plate and a back rib, the flat plate and the back rib are perpendicularly connected, and the back rib is provided with a slot adapted to the stop bar.

[0006] As a further improvement of this utility model, the flat plate has anchoring holes on both sides of the back rib that are adapted to the long anchor rod / short anchor rod.

[0007] As a further improvement of this utility model, the long and short protective plates are partially inserted into the soil at the bottom of the foundation pit.

[0008] As a further improvement of this utility model, the long anchor rods and short anchor rods are arranged alternately from top to bottom.

[0009] As a further improvement of this utility model, the surfaces of the long anchor rod and the short anchor rod are provided with threads.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses short and long protective plates alternately installed on the four side walls of the foundation pit, combined with the fastener connection of the retaining rods and diagonal braces, to ensure that the support force is evenly distributed and effectively prevent collapse caused by local stress concentration. The diagonal braces overlap the vertical retaining rods at the four corners of the foundation pit to form a rigid support frame, which can resist the lateral pressure of the soil and improve the overall seismic resistance and deformation resistance. In addition, the four-corner support allows for a larger reserved opening at the top of the foundation pit, ensuring the smooth entry and use of materials and equipment.

[0011] 2. This utility model uses long and short anchor rods to be inserted horizontally into the soil alternately from top to bottom, and adapted to the anchoring holes on the protective plate. Combined with the inclined tie rods hinged to the long protective plate and the barbed anchor rods on the bottom plate, a multi-layer anchoring network is formed, which can penetrate deep into the ground to resist pull-out forces and prevent landslides or settlement. The threaded rod surface design increases friction, and the barbed anchor rods in the mounting holes of the bottom plate further enhance tensile strength, making it suitable for varying geological conditions and extending the service life of the components. Attached Figure Description

[0012] Figure 1 This is a partial front view of a protective component for a highway bridge construction pit.

[0013] Figure 2 This is a top view of a protective component for a highway bridge construction pit.

[0014] Figure 3 A protective component for foundation pits in highway bridge construction. Figure 2 Schematic diagram of medium / long / short anchor bolts.

[0015] 1. Short guard plate; 2. Long guard plate; 3. Stop bar; 4. Diagonal brace; 5. Fastener; 6. Flat plate; 7. Back rib; 8. Slot; 9. Anchor hole; 10. Long anchor bolt; 11. Short anchor bolt; 12. Diagonal tie rod; 13. Base plate; 14. Barbed anchor bolt. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3 In this embodiment of the utility model, a protective component for a highway bridge construction pit includes a short protective plate 1, a long protective plate 2, a retaining rod 3, and a diagonal brace 4. The short protective plate 1 and the long protective plate 2 are alternately arranged on the four side walls of the pit. A retaining rod 3 is provided on the back of the long protective plate 2 and the short protective plate 1. Diagonal braces 4 are provided at the four corners of the pit. The two ends of the diagonal brace 4 are connected to two mutually perpendicular retaining rods 3. A fastener 5 is provided between the retaining rod 3 and the diagonal brace 4, and the retaining rod 3 and the diagonal brace 4 are connected by the fastener 5. A diagonal tie rod 12 is provided on the outside of the pit, directly opposite the long protective plate 2. One end of the diagonal tie rod 12 is hinged to the long protective plate 2, and the other end of the diagonal tie rod 12 is hinged to a base plate 13. An installation hole is provided on the base plate 13, and a barbed anchor rod 14 inserted into the ground is provided in the installation hole. The barbed anchor rod 14 has a stronger pull-out resistance.

[0018] Both the short guard plate 1 and the long guard plate 2 include a flat plate 6 and a back rib 7. The flat plate 6 and the back rib 7 are perpendicularly connected. The back rib 7 has a slot 8 that matches the stop bar 3. By limiting the short guard plate 1 and the long guard plate 2 to include the flat plate 6 and the back rib 7, and by providing the slot 8 on the back rib 7, the guard plate structure is made lighter and stronger. The slot 8 facilitates the quick snap-fit ​​installation of the stop bar 3, improving assembly efficiency and reducing on-site construction time.

[0019] The long protective plate 2 and the short protective plate 1 are partially inserted into the soil at the bottom of the foundation pit. The long protective plate 2 and the short protective plate 1 are required to be partially inserted into the soil at the bottom of the pit to provide additional support at the bottom, resist upward pull-out force, and improve the overall anti-settlement capacity, which is especially suitable for soft foundation conditions.

[0020] Please see Figure 1 and Figure 3Long anchor bolts 10 and short anchor bolts 11 are installed on the short protective plate 1 and the long protective plate 2. Both the long anchor bolts 10 and the short anchor bolts 11 are horizontally inserted into the soil on the side of the foundation pit. The long anchor bolts 10 and the short anchor bolts 11 are arranged alternately from top to bottom. By arranging the long anchor bolts 10 and the short anchor bolts 11 alternately from top to bottom, the distribution of anchoring force is optimized, stress concentration is reduced, the uniform support effect of the foundation pit sidewall is improved, and the risk of local collapse is reduced. The long anchor bolts 10 and the short anchor bolts 11 are threaded on their surfaces. The threads on the anchor bolt surfaces increase the friction and adhesion with the soil, prevent the anchor bolts from slipping out, and ensure long-term anchoring stability. This is suitable for high-load or vibration environments. Anchoring holes 9 that are adapted to the long anchor bolts 10 / short anchor bolts 11 are opened on both sides of the back rib 7 on the flat plate 6. The anchoring holes 9 on the flat plate 6 ensure that the long anchor bolts 10 and the short anchor bolts 11 can be accurately positioned and inserted into the soil, avoiding displacement, enhancing the reliability of the anchoring system, and preventing the protective plate from loosening.

[0021] The working principle of this utility model is: First, short protective plates 1 and long protective plates 2 are alternately installed on the four side walls of the pit, so that the protective plates are partially inserted into the soil at the bottom of the pit, initially forming a support frame. Then, retaining rods 3 are installed on the back of the protective plates, and diagonal bracing rods 4 are connected at the four corners of the pit through fasteners 5, overlapping on two mutually perpendicular retaining rods 3 to enhance rigid support. At the same time, diagonal tie rods 12 are hinged on the outside opposite the long protective plates 2, and the other end of the diagonal tie rods 12 is fixed to the barbed anchor rods 14 of the bottom plate 13 to ensure overall tensile stability. Finally, long anchor rods 10 and short anchor rods 11 are alternately inserted into the soil horizontally on the protective plates, and the friction is increased by using the threaded surface to complete the multi-layer anchoring system.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective component for a construction pit of a highway bridge, comprising a short guard plate (1), a long guard plate (2), a retaining rod (3), and a diagonal brace (4), characterized in that... The short protective plate (1) and the long protective plate (2) are alternately installed on the four side walls of the foundation pit. The back of the long protective plate (2) and the short protective plate (1) is provided with a stop bar (3). The four corners of the foundation pit are provided with diagonal braces (4). The two ends of the diagonal braces (4) overlap on two mutually perpendicular stop bars (3). The stop bars (3) and the diagonal braces (4) are provided with fasteners (5), and the stop bars (3) and the diagonal braces (4) are connected by fasteners (5). The outer side of the foundation pit faces the long The guard plate (2) is provided with a diagonal tie rod (12). One end of the diagonal tie rod (12) is hinged to the long guard plate (2), and the other end of the diagonal tie rod (12) is hinged to a base plate (13). The base plate (13) has an installation hole, and a barbed anchor rod (14) inserted into the ground is provided in the installation hole. The short guard plate (1) and the long guard plate (2) are provided with a long anchor rod (10) and a short anchor rod (11). The long anchor rod (10) and the short anchor rod (11) are both horizontally inserted into the soil on the side of the foundation pit.

2. The protective component for a highway bridge construction pit according to claim 1, characterized in that... The short guard plate (1) and the long guard plate (2) both include a flat plate (6) and a back rib (7). The flat plate (6) and the back rib (7) are perpendicularly connected. The back rib (7) has a slot (8) that is compatible with the stop bar (3).

3. A protective component for a highway bridge construction pit according to claim 2, characterized in that... The flat plate (6) has anchoring holes (9) on both sides of the back rib (7) that are compatible with the long anchor rod (10) / short anchor rod (11).

4. A protective component for a highway bridge construction pit according to claim 1, characterized in that... The long protective plate (2) and the short protective plate (1) are partially inserted into the soil at the bottom of the foundation pit.

5. A protective component for a highway bridge construction pit according to claim 1, characterized in that... The long anchor rods (10) and short anchor rods (11) are arranged alternately from top to bottom.

6. A protective component for a highway bridge construction pit according to claim 1, characterized in that... The long anchor rod (10) and the short anchor rod (11) are threaded on their surfaces.

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