A bridge pier site selection cofferdam node
Patent Information
- Application Number
- CN202522678728.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-17
AI Technical Summary
[0003]在桥梁建设中，桥墩选址处的围堰工程至关重要，它为桥墩施工创造干地作业条件，然而围堰结构在止水方面，常因材料老化、连接部位密封不严等原因，导致渗水现象频发，且围堰高度提升所受横向水压较大，为此，需要提供一种桥墩选址围堰节点，具有良好防渗性能、高抗水压能力且便于施工
1、本实用新型通过钢筋砼防渗基础、止水钢板和混凝土防渗墙体的配合使用下，对桥墩选址位置进行止水维护，同时在横向角钢、纵向角钢、支撑横梁和支撑纵梁的配合使用下，对止水钢板进行横向和纵向支撑，即可达到有效防止渗水现象发生和抗水压强度高的目的；
Smart Images
Figure CN224902214U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bridge processing technology, and in particular relates to a cofferdam node for pier site selection. Background Technology
[0002] Bridge pier site selection refers to the process of determining the specific location of bridge piers by comprehensively considering various factors when planning bridge construction. This requires consideration of geological conditions to ensure that the foundation of the selected location is solid and can bear the weight of the bridge pier and the superstructure of the bridge. Hydrological factors are also crucial to avoid the impact of floods, erosion and other factors.
[0003] In bridge construction, the cofferdam project at the pier site is crucial, as it creates dry working conditions for pier construction. However, the cofferdam structure often suffers from water seepage due to material aging and poor sealing at the joints. Furthermore, the lateral water pressure is significant when the cofferdam is raised. Therefore, it is necessary to provide a cofferdam node for pier site selection that has good seepage prevention performance, high water pressure resistance, and is easy to construct. Utility Model Content
[0004] The purpose of this utility model is to provide a cofferdam node for pier site selection to solve the above-mentioned technical problems.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A cofferdam node for bridge pier site selection includes a reinforced concrete anti-seepage foundation: multiple water-stop steel plates are distributed around the perimeter of the reinforced concrete anti-seepage foundation. Both sides of the water-stop steel plates are integrally formed with snap-fit edges, and two adjacent snap-fit edges are interlocked with each other. The multiple water-stop steel plates form an inner and outer double layer. A concrete anti-seepage wall is poured between the multiple water-stop steel plates in the double layer. Two transverse angle steels are installed inside the inner layer of the water-stop steel plates. Both ends of the transverse angle steels are equipped with longitudinal angle steels. Tie-couplers are set between the transverse angle steels and longitudinal angle steels of the water-stop steel plates. A supporting crossbeam is installed between the two longitudinal angle steels. A supporting longitudinal beam is installed between the two transverse angle steels. Mounting seats are welded to the inner cavities of the transverse angle steels and longitudinal angle steels. The ends of the supporting crossbeams and supporting longitudinal beams are engaged in the inner cavities of the mounting seats.
[0006] Preferably, the pull assembly includes a pull rod that passes through a transverse angle steel and a longitudinal angle steel, an anti-detachment plate is welded to one end of the pull rod, and a nut is threaded onto the surface of the pull rod.
[0007] Preferably, the surface of the anti-detachment plate is tightly fitted with the water-stop steel plate, and the side of the nut near the anti-detachment plate is tightly fitted with the inner wall of the transverse angle steel and the longitudinal angle steel.
[0008] Preferably, the surface of the pull rod is fitted with a PVC sleeve, which is located between the inner and outer water-stop steel plates.
[0009] Preferably, the inner cavity of the mounting base is provided with bolts, and the supporting crossbeam and supporting longitudinal beam are fixedly connected to the longitudinal angle steel and the transverse angle steel respectively by bolts.
[0010] The beneficial effects of this utility model are: 1. This utility model uses reinforced concrete anti-seepage foundation, water-stop steel plate and concrete anti-seepage wall to maintain water stop at the selected location of bridge pier. At the same time, the water-stop steel plate is supported in the horizontal and vertical directions by the use of transverse angle steel, longitudinal angle steel, supporting crossbeam and supporting longitudinal beam, so as to effectively prevent water seepage and achieve high water pressure resistance. 2. This utility model, through the setting of the tie assembly, in which the anti-detachment plate, tie rod and nut work together, plays a role in tying and reinforcing the inner and outer layers of water-stop steel plates, and at the same time plays a role in installing and fixing the transverse angle steel and longitudinal angle steel. With the cooperation of the PVC sleeve, the surface of the tie rod is protected, thereby effectively preventing the concrete anti-seepage wall from sticking to the surface of the tie rod, and making it easy to remove the tie rod later. Attached Figure Description
[0011] in: Figure 1 This is a top view schematic diagram of one embodiment of the present utility model; Figure 2 This is a perspective view of one embodiment of the present utility model; Figure 3 This is an exploded perspective view of the longitudinal angle steel and the tie rod assembly according to one embodiment of the present invention; Figure 4 This is a three-dimensional exploded view of a water-stop steel plate and a snap-edge according to an embodiment of the present invention.
[0012] The attached diagram lists the components represented by each number as follows: 1. Reinforced concrete anti-seepage foundation; 2. Water-stop steel plate; 3. Edge trim; 4. Concrete anti-seepage wall; 5. Horizontal angle steel; 6. Longitudinal angle steel; 7. Tie rod assembly; 71. Tie rod; 72. Anti-detachment plate; 73. Nut; 74. PVC sleeve; 8. Support beam; 9. Support beam; 10. Mounting base; 11. Bolt. Detailed Implementation
[0013] In the following description, embodiments of the cofferdam node for pier site selection of this utility model will be described with reference to the accompanying drawings.
[0014] Figure 1-4This invention illustrates a cofferdam node for bridge pier site selection according to an embodiment of the present invention, comprising a reinforced concrete anti-seepage foundation 1: multiple water-stop steel plates 2 are distributed around the perimeter of the reinforced concrete anti-seepage foundation 1, and both sides of the water-stop steel plates 2 are integrally formed with interlocking edges 3, with adjacent interlocking edges 3 interlocking with each other. The multiple water-stop steel plates 2 form an inner and outer double layer, and a concrete anti-seepage wall 4 is poured between the multiple water-stop steel plates 2 in the double layer. The inner layer of water-stop steel plates 2 is equipped with two transverse angle steels 5, and both ends of the transverse angle steels 5 are equipped with longitudinal angle steels 6. A tie rod 7 is installed between the qualified transverse angle steel 5 and longitudinal angle steel 6 of the waterstop steel plate 2. The tie rod 7 includes a tie rod 71, which passes through the transverse angle steel 5 and the longitudinal angle steel 6. An anti-detachment plate 72 is welded to one end of the tie rod 71. A nut 73 is threaded onto the surface of the tie rod 71. The surface of the anti-detachment plate 72 is tightly fitted to the waterstop steel plate 2. The side of the nut 73 near the anti-detachment plate 72 is tightly fitted to the inner wall of the transverse angle steel 5 and the longitudinal angle steel 6. The surface of the tie rod 71... A PVC sleeve 74 is installed between the inner and outer layers of waterstop steel plates 2. Through the installation of the tie rod assembly 7, in which the anti-detachment plate 72, tie rod 71, and nut 73 work together, the inner and outer layers of waterstop steel plates 2 are reinforced with tie rods. Simultaneously, the PVC sleeve provides installation and fixation for the transverse angle steel 5 and longitudinal angle steel 6. The PVC sleeve 74 also protects the surface of the tie rod 71, effectively preventing the concrete waterproof wall 4 from adhering to the tie rod. The surface of rod 71 is designed to facilitate the subsequent removal of the tie rod 71. A supporting crossbeam 8 is assembled between the two longitudinal angle steels 6, and a supporting longitudinal beam 9 is assembled between the two transverse angle steels 5. Mounting seats 10 are welded to the inner cavities of both transverse angle steels 5 and longitudinal angle steels 6. The ends of the supporting crossbeam 8 and the supporting longitudinal beam 9 are engaged in the inner cavity of the mounting seat 10. Bolts 11 are installed through the inner cavity of the mounting seat 10. The supporting crossbeam 8 and the supporting longitudinal beam 9 are fixedly connected to the longitudinal angle steel 6 and the transverse angle steel 5 respectively by bolts 11.
[0015] Working Principle: In use, the user installs the waterstop steel plate 2 at the selected pier location. During installation, the waterstop steel plates 2 interlock with each other using the snap-fit edges 3 to form a barrier, with double layers installed inside and out. The user then moves the PVC sleeve 74 between the two waterstop steel plates 2 and inserts the tie rod 71 through both plates. Next, the user arranges the transverse angle steel 5 and longitudinal angle steel 6 so that the tie rod 71 simultaneously penetrates either the transverse angle steel 5 or the longitudinal angle steel 6. Finally, the nut 73 is screwed onto the surface of the tie rod 71 and tightened, thus fixing the tie rod 71 and simultaneously connecting and fixing the transverse angle steel 5 and the longitudinal angle steel 6. The user then assembles the support beam 8 and the support longitudinal beam 9, so that the ends of the support beam 8 and the support longitudinal beam 9 are engaged in the inner cavity of the mounting base 10. The bolt 11 is inserted from one side into the inner cavity of the mounting base 10 to fix the support beam 8 and the support longitudinal beam 9. Then, the water accumulated between the two layers of water-stop steel plates 2 is pumped out. Then, the concrete anti-seepage wall 4 is poured between the two layers of water-stop steel plates 2. At the same time, the water accumulated in the area below the support beam 8 and the support longitudinal beam 9 is pumped out. The reinforced concrete anti-seepage foundation 1 is poured below the support beam 8 and the support longitudinal beam 9. The reinforced concrete anti-seepage foundation 1 and the concrete anti-seepage wall 4 are completely solidified.
[0016] In summary, the cofferdam at the pier site can effectively prevent water seepage and maintain the pier location by using reinforced concrete anti-seepage foundation 1, water-stop steel plate 2, and concrete anti-seepage wall 4 in combination. At the same time, the water-stop steel plate 2 can be supported laterally and longitudinally by using transverse angle steel 5, longitudinal angle steel 6, supporting crossbeam 8, and supporting longitudinal beam 9.
Claims
1. A cofferdam node for bridge pier site selection, characterized in that, The structure includes a reinforced concrete anti-seepage foundation (1): Multiple water-stop steel plates (2) are distributed around the perimeter of the reinforced concrete anti-seepage foundation (1). Both sides of each water-stop steel plate (2) are integrally formed with interlocking edges (3). Adjacent interlocking edges (3) interlock with each other. The multiple water-stop steel plates (2) form an inner and outer double layer. A concrete anti-seepage wall (4) is poured between the multiple water-stop steel plates (2) in the double layer. The inner layer of the water-stop steel plate (2) is fitted with two transverse angle steels (5). The two ends of the transverse angle steels (5)... All are equipped with longitudinal angle steel (6), and tie rods (7) are provided between the qualified transverse angle steel (5) and longitudinal angle steel (6) of the waterstop steel plate (2). A support beam (8) is assembled between the two longitudinal angle steels (6), and a support longitudinal beam (9) is assembled between the two transverse angle steels (5). Mounting seats (10) are welded to the inner cavities of the transverse angle steel (5) and the longitudinal angle steel (6). The ends of the support beam (8) and the support longitudinal beam (9) are engaged in the inner cavity of the mounting seat (10).
2. The cofferdam node for pier site selection according to claim 1, characterized in that, The pull assembly (7) includes a pull rod (71) that passes through a transverse angle steel (5) and a longitudinal angle steel (6). One end of the pull rod (71) is welded with an anti-detachment plate (72), and a nut (73) is threaded onto the surface of the pull rod (71).
3. A cofferdam node for pier site selection according to claim 2, characterized in that, The surface of the anti-detachment plate (72) is tightly fitted with the water-stop steel plate (2), and the nut (73) on the side near the anti-detachment plate (72) is tightly fitted with the inner wall of the transverse angle steel (5) and the longitudinal angle steel (6).
4. A cofferdam node for pier site selection according to claim 3, characterized in that, The surface of the pull rod (71) is fitted with a PVC sleeve (74), which is located between the inner and outer water-stop steel plates (2).
5. A cofferdam node for pier site selection according to claim 4, characterized in that, The inner cavity of the mounting base (10) is provided with bolts (11), and the supporting crossbeam (8) and supporting longitudinal beam (9) are fixedly connected to the longitudinal angle steel (6) and the transverse angle steel (5) respectively by bolts (11).