A kind of anti-wind pulling locking device of beam truss and pile top cap beam cooperation
Patent Information
- Application Number
- CN202522639918.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-12
AI Technical Summary
[0003]目前现有的桩基础支撑的结构体系，贝雷桁架多直接搁置或通过简易连接件与桩顶盖梁表面连接，这种连接方式在常规荷载下可满足基本使用要求，但在强风荷载作用下暴露出明显缺陷：简易连接节点的抗拔承载力严重不足，当强风引发结构产生较大上拔位移时，连接节点易发生脱开、失效，导致贝雷桁架出现整体或局部失稳，进而引发结构坍塌等安全事故
1、 通过锁定组件，利用梯形块与桩顶盖梁底面梯形槽的适配设计，配合拉杆、拉板的联动操作，可快速完成贝雷桁架与桩顶盖梁的定位对接。施工时仅需拉动拉板使锁定块收缩，待梯形块滑入梯形槽后松开拉板，弹簧即可驱动锁定块自动卡入梯形块的锁定槽内，无需复杂调试，大幅缩短了安装作业时间，提升了施工效率，该组件的核心优势在于“拔力越大、锁定越牢” 的自强化效应，当强风引发贝雷桁架产生竖向拔力时，贝雷桁架带动梯形块向上位移，梯形块与梯形槽的斜面相互挤压，进而推动锁定块与锁定槽的卡合更加紧密，有效抵御竖向拔力，避免贝雷桁架与桩顶盖梁脱开。这种主动适配风荷载的抗拔设计，从根本上解决了传统简易连接抗拔承载力不足的缺陷，显著提升了结构在强风环境下的稳定性和安全性；
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Figure CN224918313U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of civil engineering construction technology, and in particular to an anti-uplift locking device for the coordinated wind protection of Bailey trusses and pile cap beams. Background Technology
[0002] Bailey bridges, due to their significant advantages such as lightweight structure, convenient assembly and disassembly, and stable load-bearing performance, have been widely used in many fields, including bridge construction, temporary scaffolding erection, and emergency engineering construction. Especially in coastal areas and open plains where wind loads are significant, temporary or semi-permanent structures with Bailey bridges as their core components are increasingly common, such as the load-bearing trusses of cross-sea bridge construction platforms and the main load-bearing structures of temporary port piers. During service, these structures, in addition to bearing their own weight and conventional vertical loads such as construction loads, must also effectively resist the horizontal thrust, overturning moment, and vertical uplift forces caused by wind-induced vibrations brought by strong winds. Vertical uplift resistance often becomes the key control point determining the structure's wind resistance safety.
[0003] Currently, in existing pile foundation-supported structural systems, Bailey bridge trusses are mostly directly placed on top or connected to the surface of the pile cap beam via simple connectors. While this connection method can meet basic usage requirements under normal loads, it reveals significant defects under strong wind loads: the pull-out bearing capacity of the simple connection nodes is severely insufficient. When strong winds cause significant upward displacement of the structure, the connection nodes are prone to detachment or failure, leading to overall or partial instability of the Bailey bridge truss and ultimately causing structural collapse and other safety accidents. Therefore, a pull-out locking device for coordinated wind protection between the Bailey bridge truss and the pile cap beam is proposed. Utility Model Content
[0004] The main objective of this invention is to provide a wind-resistant locking device for Bailey trusses and pile cap beams to work together to prevent wind pull, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A wind-resistant and pull-out locking device for Bailey trusses and pile cap beams working together, including pile cap beams; And two Bailey trusses located below the pile cap beam, the two Bailey trusses being symmetrically arranged, with locking and fastening components provided between the pile cap beam and the Bailey trusses; The locking assembly includes a trapezoidal block fixedly connected to the top surface of the Bailey truss. The bottom surface of the pile cap beam has a trapezoidal groove adapted to the trapezoidal block. The pile cap beam has a cavity inside, and a locking block, a tie rod, and a spring are arranged inside the cavity. The spring is sleeved on the surface of the tie rod. The left side of the trapezoidal block has a locking groove adapted to the locking block.
[0006] Preferably, the top surface of the trapezoidal block slides through the bottom surface of the pile top cap beam and extends into the trapezoidal groove, and the right end surface of the locking block slides through the inner side of the cavity, the trapezoidal groove and the left side of the trapezoidal block and extends into the locking groove.
[0007] Preferably, the right end face of the pull rod is fixedly connected to the left end face of the locking block, the left end face of the pull rod slides through the left side of the cavity and extends to the left side of the pile top cap beam, and the left and right end faces of the spring are fixedly connected to the left side of the cavity and the right side of the locking block, respectively.
[0008] Preferably, a pull plate is provided on the left side of the pull rod, and the left end face of the pull rod is fixedly connected to the right side face of the pull plate.
[0009] Preferably, the bottom surface of the pile cap beam is in contact with the top surface of the Bailey truss.
[0010] Preferably, the fastening assembly includes two through slots extending through the top surface of the Bailey truss, with U-shaped clamps fixedly connected to the bottom surfaces of the two slots. The two U-shaped clamps on the same side are located on the front and rear sides of the trapezoidal block, respectively. A through hole is provided through the bottom surface of the pile cap beam. The top surface of the U-shaped clamp extends through the bottom surface of the pile cap beam and the through hole to the top of the pile cap beam. A support plate is fixedly connected to the top surface of the pile cap beam. The support plate is located inside the trapezoidal block. A nut is threaded onto the surface of the U-shaped clamp.
[0011] Preferably, a sleeve is fixedly connected to the inner side of the through hole, and the inner wall of the sleeve is in contact with the surface of the U-shaped clamp.
[0012] Preferably, a pressure plate is provided between the support plate and the nut, and a through groove is provided on the top surface of the pressure plate. The top surface of the U-shaped clamp slides through the bottom surface of the pressure plate and extends to the top of the pressure plate.
[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By utilizing the locking assembly and the matching design of the trapezoidal block and the trapezoidal groove on the bottom surface of the pile cap beam, along with the linkage operation of the tie rod and tie plate, the positioning and docking of the Bailey truss and the pile cap beam can be quickly completed. During construction, simply pull the tie plate to retract the locking block. After the trapezoidal block slides into the trapezoidal groove, release the tie plate, and the spring will drive the locking block to automatically engage in the locking groove of the trapezoidal block. No complex adjustments are required, significantly shortening the installation time and improving construction efficiency. The core advantage of this assembly lies in the self-reinforcing effect of "the greater the pull-out force, the stronger the lock." When strong winds cause vertical pull-out forces in the Bailey truss, the Bailey truss drives the trapezoidal block to move upward. The inclined surfaces of the trapezoidal block and the trapezoidal groove squeeze each other, thereby pushing the locking block and the locking groove to engage more tightly, effectively resisting vertical pull-out forces and preventing the Bailey truss from separating from the pile cap beam. This active wind load-adaptive anti-pull-out design fundamentally solves the defect of insufficient pull-out bearing capacity of traditional simple connections, significantly improving the stability and safety of the structure in strong wind environments. 2. By using fastening components, the synergistic effect of U-shaped clamps, sleeves, support plates, pressure plates, and nuts, multiple limiting and fixing mechanisms are achieved between the pile cap beam and the Bailey truss. The U-shaped clamps pass through the through holes in the pile cap beam and are locked with nuts. The sleeves guide and limit the U-shaped clamps, preventing them from shifting. The pressure plates and support plates work together to increase the contact area of the load-bearing structure, allowing the locking force to be evenly transmitted to the pile cap beam and the Bailey truss. This multi-fixing structure effectively limits the relative displacement between the two, integrating the dispersed components into a stable whole and improving the structure's overall ability to resist horizontal wind loads and vertical loads. 3. Through the coordinated operation of the fastening and locking components, and based on the mechanical locking achieved by the locking components, a continuous compressive force is further applied by the pre-tightening force of the nuts, ensuring a tight fit between the pile cap beam and the Bailey truss, effectively transferring vertical and horizontal wind loads. For the pull-out-resistant locking structure formed by the locking components, the fastening components provide secondary reinforcement, preventing the single locking structure from loosening due to long-term stress, further improving the structure's load-bearing stability and wind resistance reliability. Attached Figure Description
[0014] Figure 1 This is a perspective view of the overall front view of this utility model; Figure 2 This is a rear-view perspective view of the present invention; Figure 3 This is a front sectional perspective view of the trapezoidal block of this utility model; Figure 4 This is a perspective sectional view of the left side of the U-shaped clamp of this utility model; Figure 5 For the present utility model Figure 3 Enlarged 3D view of area A in the middle; Figure 6 For the present utility model Figure 4 Enlarged 3D view of area B.
[0015] In the diagram: 1. Pile cap beam; 2. Bailey truss; 30. Locking assembly; 301. Trapezoidal block; 302. Locking block; 303. Tie rod; 304. Spring; 305. Tie plate; 31. Fastening assembly; 311. U-shaped clamp; 312. Sleeve; 313. Support plate; 314. Pressure plate; 315. Nut. Detailed Implementation
[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0017] Example 1: Please refer to Figure 1 - Figure 6This utility model provides a technical solution: a wind-resistant anti-pull-out locking device for Bailey trusses and pile top cap beams, including a pile top cap beam 1; And two Bailey trusses 2 located below the pile cap beam 1, the two Bailey trusses 2 are symmetrically arranged, and a locking component 30 and a fastening component 31 are provided between the pile cap beam 1 and the Bailey trusses 2; The locking assembly 30 includes a trapezoidal block 301 fixedly connected to the top surface of the Bailey truss 2. The bottom surface of the pile cap beam 1 is provided with a trapezoidal groove that matches the trapezoidal block 301. The pile cap beam 1 has a cavity inside, and a locking block 302, a tie rod 303 and a spring 304 are provided inside the cavity. The spring 304 is sleeved on the surface of the tie rod 303. The left side of the trapezoidal block 301 is provided with a locking groove that matches the locking block 302.
[0018] The top surface of trapezoidal block 301 slides through the bottom surface of pile top cap beam 1 and extends into the trapezoidal groove. The right end surface of locking block 302 slides through the inner side of the cavity, the trapezoidal groove and the left side of trapezoidal block 301 and extends into the locking groove.
[0019] The right end face of the pull rod 303 is fixedly connected to the left end face of the locking block 302. The left end face of the pull rod 303 slides through the left side of the cavity and extends to the left side of the pile top cap beam 1. The left and right end faces of the spring 304 are fixedly connected to the left side of the cavity and the right side of the locking block 302, respectively.
[0020] A pull plate 305 is provided on the left side of the pull rod 303. The left end face of the pull rod 303 is fixedly connected to the right side face of the pull plate 305, and the pull plate 305 is used to facilitate pulling the pull rod 303.
[0021] The bottom surface of the pile cap beam 1 contacts the top surface of the Bailey truss 2, and the Bailey truss 2 provides support for the pile cap beam 1.
[0022] By using the locking component 30 and the matching design of the trapezoidal block 301 with the trapezoidal groove on the bottom surface of the pile cap beam 1, along with the linkage operation of the tie rod 303 and the tie plate 305, the positioning and docking of the Bailey truss 2 and the pile cap beam 1 can be quickly completed. During construction, simply pull the tie plate 305 to retract the locking block 302. After the trapezoidal block 301 slides into the trapezoidal groove, release the tie plate 305, and the spring 304 will drive the locking block 302 to automatically engage with the locking groove of the trapezoidal block 301. No complicated adjustments are required, which greatly shortens the installation time and improves construction efficiency. The core advantage of this component lies in the self-reinforcing effect of "the greater the pulling force, the stronger the locking". When strong winds cause vertical uplift forces in the Bailey truss 2, the Bailey truss 2 drives the trapezoidal block 301 to shift upwards. The trapezoidal block 301 and the inclined surface of the trapezoidal groove press against each other, which in turn pushes the locking block 302 to engage more tightly with the locking groove, effectively resisting the vertical uplift forces and preventing the Bailey truss 2 from detaching from the pile cap beam 1. This active wind load-adaptive uplift resistance design fundamentally solves the defect of insufficient uplift resistance in traditional simple connections, significantly improving the stability and safety of the structure in strong wind environments.
[0023] Example 2: Based on Example 1, a preferred embodiment of the wind-resistant and pull-out locking device for Bailey trusses and pile cap beams provided by this utility model is as follows: Figure 1 - Figure 4 and Figure 6 As shown: The fastening assembly 31 includes two slots that pass through the top surface of the Bailey truss 2. The bottom surfaces of the two slots are fixedly connected to U-shaped clamps 311. The two U-shaped clamps 311 on the same side are located on the front and rear sides of the trapezoidal block 301, respectively. The bottom surface of the pile cap beam 1 is provided with a through hole. The top surface of the U-shaped clamp 311 extends through the bottom surface of the pile cap beam 1 and the through hole to the top of the pile cap beam 1. The top surface of the pile cap beam 1 is fixedly connected to a support plate 313. The support plate 313 is located inside the trapezoidal block 301. Nuts 315 are threaded onto the surface of the U-shaped clamp 311.
[0024] A sleeve 312 is fixedly connected to the inner side of the through hole. The inner wall of the sleeve 312 is in contact with the surface of the U-shaped clamp 311. The sleeve 312 plays a guiding and limiting role for the U-shaped clamp 311 to prevent it from shifting.
[0025] A pressure plate 314 is provided between the support plate 313 and the nut 315. A through groove is provided on the top surface of the pressure plate 314. The top surface of the U-shaped clamp 311 slides through the bottom surface of the pressure plate 314 and extends to the top of the pressure plate 314. The pre-tightening force of the nut 315 applies a continuous clamping force, so that the pile top cap beam 1 and the Bailey truss 2 are tightly fitted together.
[0026] By using fastening assembly 31, and through the synergistic action of U-shaped clamp 311, sleeve 312, support plate 313, pressure plate 314, and nut 315, multiple limiting and fixing of pile cap beam 1 and Bailey truss 2 are achieved. U-shaped clamp 311 passes through the through hole of pile cap beam 1 and is locked by nut 315. Sleeve 312 guides and limits U-shaped clamp 311 to prevent it from shifting. Pressure plate 314 cooperates with support plate 313 to increase the contact area of force, so that the locking force is evenly transmitted to pile cap beam 1 and Bailey truss 2. This multiple fixing structure effectively restricts the relative displacement between the two, integrates the scattered components into a stable whole, and improves the structure's comprehensive ability to resist horizontal wind loads and vertical loads.
[0027] By cooperating with the fastening component 31 and the locking component 30, and based on the mechanical locking achieved by the locking component 30, a continuous compressive force is further applied by the preload force of the nut 315, ensuring a tight fit between the pile cap beam 1 and the Bailey truss 2, effectively transferring vertical loads and horizontal wind loads. For the pull-out locking structure formed by the locking component 30, the fastening component 31 plays a secondary reinforcement role, preventing the single locking structure from loosening due to long-term stress, and further improving the load-bearing stability and wind resistance reliability of the structure.
[0028] The working principle of this utility model is as follows: When fixing the pile cap beam 1 and Bailey truss 2, the pull plate 305 is first pulled to the left during construction. The pull plate 305 drives the pull rod 303 to move to the left, thereby pulling the locking block 302 to retract into the cavity inside the pile cap beam 1. At this time, the locking block 302 squeezes the spring 304 sleeved on the surface of the pull rod 303, so that the spring 304 is in a compressed energy storage state, moving the pile cap beam 1 downward, so that the trapezoidal block 301 on the top surface of the Bailey truss 2 is precisely aligned with the trapezoidal groove on the bottom surface of the pile cap beam 1, ensuring that the trapezoidal block 301 and the inclined surface of the trapezoidal groove are completely in contact, laying the foundation for subsequent pull-out force resistance. After the trapezoidal block 301 has completely slid into the trapezoidal groove, the pull plate 305 is released, and the compressed spring 304 releases its elastic potential energy, pushing the locking block 302 to the right, so that the locking block 302... The block penetrates the inner wall of the cavity, the side wall of the trapezoidal groove, and the locking groove on the left side of the trapezoidal block 301 in sequence, and finally gets stuck inside the locking groove to complete the mechanical locking of the trapezoidal block 301 and the pile top cap beam 1. When strong winds cause the Bailey truss 2 to generate vertical pull force, the Bailey truss 2 drives the trapezoidal block 301 to move upward. The trapezoidal block 301 and the inclined surface of the trapezoidal groove generate a squeezing force. This force will further enhance the tightness of the locking block 302 and the locking groove, forming a self-reinforcing effect of "the greater the pull force, the stronger the lock", effectively preventing the Bailey truss 2 from separating from the pile cap beam 1. During the positioning and docking process of the pile cap beam 1 and Bailey truss 2, the top of the U-shaped clamp 311 in the slot on the top surface of the Bailey truss 2 simultaneously penetrates the through hole on the bottom surface of the pile cap beam 1; the sleeve 312 inside the through hole guides and limits the U-shaped clamp 311 to prevent it from shifting. The pressure plate 314 is fitted onto the surface of the U-shaped clamp 311 above the pile cap beam 1, so that the bottom surface of the pressure plate 314 is in contact with the support plate 313 on the top surface of the pile cap beam 1. The large contact area of the pressure plate 314 is used to distribute the force. The nut 315 is screwed into the thread at the top of the U-shaped clamp 311. By tightening the nut 315, a preload is generated, so that the pressure plate 314 is tightly pressed onto the support plate 313, thereby connecting the pile cap beam 1 and the Bailey truss 2. It is firmly fixed from top to bottom, effectively transferring vertical loads and horizontal wind loads, and supplementing the fastening effect of locking component 30.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A wind-resistant locking device for Bailey truss and pile cap beam, comprising a pile cap beam (1). and two Bailey trusses (2) located below the pile cap beam (1), the two Bailey trusses (2) being symmetrically arranged, characterized in that: A locking assembly (30) and a fastening assembly (31) are provided between the pile cap beam (1) and the Bailey truss (2). The locking assembly (30) includes a trapezoidal block (301) fixedly connected to the top surface of the Bailey truss (2). The bottom surface of the pile cap beam (1) is provided with a trapezoidal groove that matches the trapezoidal block (301). The pile cap beam (1) has a cavity inside. The cavity is provided with a locking block (302), a tie rod (303) and a spring (304). The spring (304) is sleeved on the surface of the tie rod (303). The left side of the trapezoidal block (301) is provided with a locking groove that matches the locking block (302).
2. The anti-uplift locking device for coordinated wind protection of Bailey truss and pile cap beam according to claim 1, characterized in that: The top surface of the trapezoidal block (301) slides through the bottom surface of the pile top cap beam (1) and extends into the trapezoidal groove. The right end surface of the locking block (302) slides through the inner side of the cavity, the trapezoidal groove, and the left side of the trapezoidal block (301) and extends into the locking groove.
3. The anti-uplift locking device for coordinated wind protection of Bailey truss and pile top cap beam according to claim 1, characterized in that: The right end face of the pull rod (303) is fixedly connected to the left end face of the locking block (302). The left end face of the pull rod (303) slides through the left side of the cavity and extends to the left side of the pile top cap beam (1). The left and right end faces of the spring (304) are fixedly connected to the left side of the cavity and the right side of the locking block (302) respectively.
4. The anti-uplift locking device for coordinated wind protection of Bailey truss and pile cap beam according to claim 1, characterized in that: A pull plate (305) is provided on the left side of the pull rod (303), and the left end face of the pull rod (303) is fixedly connected to the right side face of the pull plate (305).
5. The anti-uplift locking device for coordinated wind protection of Bailey truss and pile top cap beam according to claim 1, characterized in that: The bottom surface of the pile cap beam (1) is in contact with the top surface of the Bailey truss (2).
6. The anti-uplift locking device for coordinated wind protection of Bailey truss and pile cap beam according to claim 1, characterized in that: The fastening assembly (31) includes two slots that pass through the top surface of the Bailey truss (2). The bottom surfaces of the two slots are fixedly connected to U-shaped clamps (311). The two U-shaped clamps (311) on the same side are located on the front and rear sides of the trapezoidal block (301). The bottom surface of the pile cap beam (1) is provided with a through hole. The top surface of the U-shaped clamp (311) extends through the bottom surface of the pile cap beam (1) and the through hole to the top of the pile cap beam (1). The top surface of the pile cap beam (1) is fixedly connected to a support plate (313). The support plate (313) is located inside the trapezoidal block (301). The surface of the U-shaped clamp (311) is threaded with a nut (315).
7. The anti-uplift locking device for coordinated wind protection of Bailey truss and pile top cap beam according to claim 6, characterized in that: A sleeve (312) is fixedly connected to the inner side of the through hole, and the inner wall of the sleeve (312) is in contact with the surface of the U-shaped clamp (311).
8. The anti-uplift locking device for coordinated wind protection of Bailey truss and pile cap beam according to claim 6, characterized in that: A pressure plate (314) is provided between the support plate (313) and the nut (315). A through groove is provided on the top surface of the pressure plate (314). The top surface of the U-shaped clamp (311) slides through the bottom surface of the pressure plate (314) and extends to the top of the pressure plate (314).