Anti-seismic test device for hollow thin-wall pier
By setting up rigid metal protective mesh and flexible steel wire mesh on the seismic test platform, the problem of the lack of protective structure of the existing seismic test platform is solved, and the safety and convenience of the test process are improved.
Patent Information
- Application Number
- CN202421790481.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing seismic testing platform lacks protective structure, which leads to the fact that when hollow thin-walled bridge piers collapse at the extreme earthquake resistance, fragments are scattered everywhere and are inconvenient to clean up, and it is easy to affect the normal operation of the equipment and the safety of other equipment.
A seismic test device including a test platform, a rigid metal protective mesh and a flexible wire mesh were designed. The rigid metal protective mesh and the flexible wire mesh form a physical barrier around the test platform to prevent fragments from splashing, and ensure the stable deployment and retraction of the flexible wire mesh through the guide rail plate and limit locking assembly.
It effectively prevents the fragments from splashing around after the bridge pier collapse, improves the safety and convenience of the test, facilitates cleaning, and enhances the safety and accuracy of the test device.
Smart Images
Figure CN222993948U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge engineering, and particularly relates to an anti-seismic test device for a hollow thin-wall pier. Background Technique
[0002] With the continuous development of bridge construction, the hollow thin-wall pier, as a light and efficient structural form, has been widely used in bridge engineering. However, under the action of an earthquake, the anti-seismic performance of the hollow thin-wall pier is directly related to the safety and stability of the bridge. Therefore, it is of great significance to study the anti-seismic performance of the hollow thin-wall pier.
[0003] In the prior art, an anti-seismic test platform is usually used to conduct anti-seismic tests on hollow thin-wall piers. When conducting an anti-seismic test, the hollow thin-wall pier or its reduced-scale model is fixed on the test platform, and then the equipment is started for the test to verify the anti-seismic performance of the hollow thin-wall pier. However, most of the existing anti-seismic test platforms are exposed flat structures, and no protective structure is provided around them. When the hollow thin-wall pier reaches the anti-seismic limit and collapses, it will topple and scatter on the platform, and the fragments will scatter everywhere, which is not convenient for later cleaning. Moreover, the fragments generated during the collapse will fall into the equipment through the gaps of the platform, affecting the normal operation of the equipment. In addition, the fragments generated when the hollow thin-wall pier collapses will fly everywhere and easily hit other equipment in the test site, causing equipment damage. Therefore, there is an urgent need for an anti-seismic test device with a shielding and protection function to solve the above problems. Summary of the Utility Model
[0004] Aiming at the existing deficiencies, the utility model provides an anti-seismic test device for a hollow thin-wall pier, which solves the problems put forward in the above background technique.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] An anti-seismic test device for a hollow thin-wall pier, comprising a test platform. Vertical columns are fixedly arranged at the four corners of the top surface of the test platform. Rigid metal protective nets are welded and fixedly connected between every two columns on the left, right and rear sides of the test platform, and the bottom of the rigid metal protective net is welded to the test platform. The tops of every two columns are fixedly connected by cross beams. The tops of the front two groups of columns are provided with a top plate, a winding drum is assembled on the top plate, a winding roller shaft is penetrated and assembled inside the winding drum, a driving motor is assembled at the right end of the winding drum, and the output end of the driving motor is fixedly connected to one end of the winding roller shaft. A flexible wire mesh is wound on the winding roller shaft.
[0007] Furthermore, guide rail plates are fixedly installed on the opposite sides of the front two groups of the columns. A guiding sliding groove is formed inside the guide rail plate, and a winding slot is formed inside the top plate. The lower end of the flexible wire mesh is snapped into the guiding sliding groove through the winding slot. Limiting and locking components are arranged on the front sides of the two groups of guide rail plates, and a supporting component is arranged between the two groups of limiting and locking components.
[0008] Furthermore, the limiting and locking component includes a supporting strip plate, a locking rod, a positioning through hole, a bottom plate and an electric telescopic rod. The supporting strip plate is arranged on the front side of the guide rail plate. The bottom of the supporting strip plate is provided with bottom plates at intervals, and the bottom plates are fixedly connected to the test platform. An electric telescopic rod is installed on the bottom plate, and the output end of the electric telescopic rod is fixedly connected to the supporting strip plate. A plurality of groups of locking rods are uniformly and fixedly installed on the inner side surface of the supporting strip plate. A plurality of groups of penetrating positioning through holes are uniformly formed inside the guide rail plate, and the positioning through holes are adapted to the locking rods.
[0009] Furthermore, the supporting component includes a pressing plate, a connecting support plate, a cross plate and an L-shaped buckle. The cross plate is horizontally arranged between the two groups of supporting strip plates. L-shaped buckles are fixedly installed on the two groups of supporting strip plates, and both ends of the cross plate are snapped into the L-shaped buckles. Two groups of pressing plates are symmetrically arranged on the upper and lower sides of the cross plate, and the pressing plates are fixedly connected to the cross plate through the connecting support plates.
[0010] Furthermore, limiting blocks are arranged near both ends of the cross plate, and the limiting blocks are located inside the L-shaped buckles.
[0011] Furthermore, rib plates are fixedly installed on the outer side of the rigid metal protection net, and both ends of the rib plates are fixedly connected to the columns.
[0012] Furthermore, an L-shaped bottom baffle is fixedly installed on the test platform between the two groups of guide rail plates.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] 1. The rigid metal protection net and the flexible wire mesh provided by the utility model can form a stable physical barrier around the test platform to shield and protect the fragments after the collapse of the bridge pier, prevent the fragments from splashing everywhere and causing injuries, improve the safety and convenience of the test, and the flexible wire mesh can be unfolded and retracted through the winding drum and the driving motor, which is convenient for entering the test platform to install the bridge pier and clean the fragments later.
[0015] 2. The guide rail plate provided in the present utility model provides a path for the unfolding and retracting of the flexible wire mesh. The guiding chute ensures that the flexible wire mesh can move smoothly along a predetermined trajectory, neither deviating from the track nor jamming. The winding slot is the channel for the flexible wire mesh to unfold and retract from the winding roller shaft. The winding slot enables the flexible wire mesh to smoothly extend from the winding cylinder and fall along the guiding chute when unfolding.
[0016] 3. The limit locking assembly provided in the present utility model not only ensures the safety of the test process, but also improves the accuracy and repeatability of the test. At the same time, the use of the electric telescopic rod also makes the locking and unlocking processes more convenient and efficient. When the flexible wire mesh is unfolded, its two sides are inserted into the guiding chute inside the guide rail plate. The electric telescopic rod drives the support strip plate to move forward, driving the locking rod to insert into the positioning through hole. The locking rod can be inserted into the mesh holes of the flexible wire mesh, thereby realizing the locking of the flexible wire mesh.
[0017] 4. The support assembly provided in the present utility model can support the flexible wire mesh from the front side, providing stable and reliable support for the flexible wire mesh, not only enhancing the safety of the test device, but also improving the accuracy and repeatability of the test.
[0018] 5. The rigid metal protective net is fixedly provided with rib plates on the outside, and both ends of the rib plates are fixedly connected to the columns. As a strengthening structure, the rib plates can significantly improve the overall strength and rigidity of the rigid metal protective net. When subjected to external impact or pressure, the rib plates can effectively resist deformation and protect the integrity of the protective net.
[0019] 6. A bottom baffle with an L-shaped structure is fixedly provided on the test platform between the two groups of guide rail plates. By providing the bottom baffle, the gap between the flexible wire mesh and the test platform can be shielded and protected from the bottom, preventing the fragments from the collapsed bridge pier from splashing out from the gap. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model.
[0021] Figure 2 is a schematic diagram of the structure of the present utility model from another angle.
[0022] Figure 3 is a schematic diagram of the partial structure of the present utility model.
[0023] Figure 4 is a partial cross-sectional view of the present utility model.
[0024] Figure 5 is a schematic diagram of the structure of the limit locking assembly in the present utility model.
[0025] Figure 6This is a schematic structural diagram of the support assembly in the present utility model.
[0026] In the figure: 1, cross beam rod; 2, column; 3, rigid metal protective net; 31, rib plate; 4, winding drum; 5, flexible wire mesh; 6, test platform; 61, bottom baffle; 7, support assembly; 71, pressure baffle; 72, connecting support plate; 73, cross plate; 731, limit clamping block; 74, L-shaped buckle; 8, driving motor; 9, winding roller shaft; 10, winding notch; 11, top plate; 12, limit locking assembly; 121, support strip plate; 122, locking rod; 123, positioning through hole; 124, bottom plate; 125, electric telescopic rod; 13, guide rail plate; 14, guide chute. Specific embodiments
[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0028] Embodiment:
[0029] As Figures 1 to 6 shown, an aseismic test device for a hollow thin-walled pier includes a test platform 6. Columns 2 are vertically and fixedly arranged at the four corners of the top surface of the test platform 6. Rigid metal protective nets 3 are welded and fixedly connected between every two columns 2 on the left, right, and rear sides of the test platform 6, and the bottom of the rigid metal protective net 3 is welded to the test platform 6. The tops of every two columns 2 are fixedly connected by a cross beam rod 1. A top plate 11 is fixedly arranged at the tops of the front two groups of columns 2. A winding drum 4 is assembled on the top plate 11. A winding roller shaft 9 is penetrated and assembled inside the winding drum 4. A driving motor 8 is assembled at the right end of the winding drum 4, and the output end of the driving motor 8 is fixedly connected to one end of the winding roller shaft 9. A flexible wire mesh 5 is wound on the winding roller shaft 9. This design solves the problems that most of the existing aseismic test platforms 6 are bare flat structures without protective structures around them. When the hollow thin-walled pier reaches the aseismic limit and collapses, it will fall and scatter on the platform, and the fragments will scatter everywhere, which is not convenient for later cleaning. Moreover, the fragments generated during the collapse of the hollow thin-walled pier will fall into the equipment along the gaps of the platform, affecting the normal operation of the equipment. In addition, the fragments generated during the collapse of the hollow thin-walled pier will fly everywhere and easily hit other equipment in the test site, causing equipment damage.
[0030] On the opposite sides of the two sets of front-side columns 2, guide rail plates 13 are fixedly installed. Inside the guide rail plates 13, guide chutes 14 are provided. Inside the top plate 11, a winding slot 10 is provided. The lower end of the flexible wire mesh 5 is inserted into the guide chute 14 through the winding slot 10. On the front sides of the two sets of guide rail plates 13, limit locking components 12 are provided. Between the two sets of limit locking components 12, a support component 7 is provided. The provided guide rail plates 13 offer a path for the unfolding and retracting of the flexible wire mesh 5. The guide chute 14 ensures that the flexible wire mesh 5 can move smoothly along a predetermined trajectory, neither deviating from the track nor jamming. The winding slot 10 is a channel for the flexible wire mesh 5 to unfold and retract from the winding roller shaft 9. The winding slot 10 enables the flexible wire mesh 5 to smoothly extend from the winding drum 4 and fall along the guide chute 14 when unfolding. The function of the limit locking component 12 is to fix the position of the flexible wire mesh 5 after it is unfolded, preventing it from shifting due to vibration or other external forces. By locking the position of the flexible wire mesh 5, the safety during the test and the accuracy of the data can be ensured. The provided support component 7 provides additional support for the unfolded flexible wire mesh 5, enhancing its overall stability.
[0031] The limit locking component 12 includes a support strip plate 121, a locking rod 122, a positioning through hole 123, a bottom plate 124, and an electric telescopic rod 125. The support strip plate 121 is arranged on the front side of the guide rail plate 13. At the bottom of the support strip plate 121, bottom plates 124 are arranged at intervals, and the bottom plates 124 are fixedly connected to the test platform 6. An electric telescopic rod 125 is installed on the bottom plate 124, and the output end of the electric telescopic rod 125 is fixedly connected to the support strip plate 121. On the inner side surface of the support strip plate 121, multiple groups of locking rods 122 are fixedly installed at equal intervals. Inside the guide rail plate 13, multiple groups of penetrating positioning through holes 123 are provided at equal intervals, and the positioning through holes 123 are adapted to the locking rods 122. The provided limit locking component 12 can fix the position of the flexible wire mesh 5 after it is unfolded, preventing it from shifting due to vibration or other external forces. The limit locking component 12 not only ensures the safety during the test but also improves the accuracy and repeatability of the test. At the same time, the use of the electric telescopic rod 125 also makes the locking and unlocking processes more convenient and efficient. After the flexible wire mesh 5 is unfolded, its two sides are inserted into the guide chute 14 inside the guide rail plate 13. By driving the support strip plate 121 to move forward through the electric telescopic rod 125, the locking rods 122 are driven to insert into the positioning through holes 123. Through the locking rods 122, they can be inserted into the mesh holes of the flexible wire mesh 5, thereby realizing the locking of the flexible wire mesh 5.
[0032] The support assembly 7 includes a retaining pressure plate 71, a connecting support plate 72, a cross plate 73 and an L-shaped buckle 74. The cross plate 73 is horizontally arranged between two groups of support strip plates 121. L-shaped buckles 74 are fixedly arranged on both groups of support strip plates 121, and both ends of the cross plate 73 are clamped into the L-shaped buckles 74. Two groups of retaining pressure plates 71 are symmetrically arranged on the upper and lower sides of the cross plate 73, and the retaining pressure plates 71 are fixedly connected to the cross plate 73 through the connecting support plates 72. The provided support assembly 7 can support the flexible wire mesh 5 from the front side, providing stable and reliable support for the flexible wire mesh 5, not only enhancing the safety of the test device, but also improving the accuracy and repeatability of the test.
[0033] Limit blocks 731 are arranged near both ends of the cross plate 73, and the limit blocks 731 are located inside the L-shaped buckles 74. When the cross plate 73 is arranged in the L-shaped buckles 74, the limit blocks 731 can effectively prevent the cross plate 73 from sliding in the horizontal direction, enhancing the stability of the cross plate 73 on the support strip plates 121. At the same time, the arranged limit blocks 731 play a role in positioning the installation connection of the cross plate 73, ensuring that the cross plate 73 can be accurately installed at the predetermined position each time, and improving the positioning accuracy of the cross plate 73.
[0034] Reinforcing plates 31 are fixedly arranged on the outer side of the rigid metal protective net 3, and both ends of the reinforcing plates 31 are fixedly connected to the columns 2. As a strengthening structure, the reinforcing plates 31 can significantly improve the overall strength and rigidity of the rigid metal protective net 3. When subjected to external impact or pressure, the reinforcing plates 31 can effectively resist deformation and protect the integrity of the protective net.
[0035] A bottom baffle 61 with an L-shaped structure is fixedly arranged on the test platform 6 between the two guide plates 13. Through the provided bottom baffle 61, the gap between the flexible wire mesh 5 and the test platform 6 can be shielded and protected from the bottom, preventing the fragments from the collapsed bridge pier from splashing out from the gap.
[0036] The working principle of the hollow thin-wall bridge pier seismic test device is as follows: when the test is required, the bridge pier test model is first fixed on the test platform 6, and then the drive motor 8 is started to rotate the winding roller 9, so that the flexible steel wire mesh 5 is unfolded from the winding drum 4. As the winding roller 9 rotates, the flexible steel wire mesh 5 is gradually unfolded and enters the guide chute 14 through the winding notch 10. The guide chute 14 ensures that the flexible steel wire mesh 5 can move down smoothly along the predetermined trajectory until it is fully unfolded. When the flexible steel wire mesh 5 is unfolded to the predetermined position, the electric telescopic rod 125 pushes the support strip 121 forward, so that the locking rod 122 is inserted into the positioning through hole 123, and then snapped into the mesh of the flexible steel wire mesh 5, so as to lock the flexible steel wire mesh 5 and prevent it from shifting due to vibration or other external forces. Subsequently, the horizontal plate 73 is snapped into the L-shaped buckle 74, and the front side support is provided for the flexible steel wire mesh 5 through the pressure plate 71 and the connecting support plate 72 to enhance its stability. A protective area is formed around the test platform 6 by the rigid metal protection net 3 and the flexible steel wire net 5. Due to the presence of the flexible steel wire net 5 and the rigid metal protection net 3, even if the bridge pier collapses, its fragments will be intercepted by the flexible steel wire net 5 and the rigid metal protection net 3 and will not fly around. After the test is completed, the locking state of the flexible steel wire net 5 is released, and then the driving motor 8 is reversely operated to retract the flexible steel wire net 5, and subsequent cleaning work is carried out.
[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.
Claims
1. A hollow thin-wall bridge pier seismic test device, comprising a test platform (6), characterized in that: The four corners of the top surface of the test platform (6) are vertically fixed with columns (2); a rigid metal protective net (3) is welded and fixedly connected between the columns (2) on the left, right and rear sides of the test platform (6); and the bottom of the rigid metal protective net (3) is welded and connected to the test platform (6); the tops of the columns (2) are fixedly connected to each other through a crossbeam (1); a top plate (11) is fixedly provided on the tops of the two groups of columns (2) on the front side; a winding drum (4) is mounted on the top plate (11); a winding roller shaft (9) is installed through the inside of the winding drum (4); a driving motor (8) is mounted on the right end of the winding drum (4); and the output end of the driving motor (8) is fixedly connected to one end of the winding roller shaft (9); and a flexible steel wire net (5) is wound on the winding roller shaft (9).
2. The hollow thin-wall bridge pier seismic test device according to claim 1 is characterized in that: Guide rail plates (13) are fixedly provided on opposite sides of the two groups of columns (2) on the front side, a guide slide groove (14) is provided inside the guide rail plate (13), a winding slot (10) is provided inside the top plate (11), and the lower end of the flexible steel wire mesh (5) is inserted into the guide slide groove (14) through the winding slot (10), and the front sides of the two groups of guide rail plates (13) are provided with limit locking components (12), and a support component (7) is provided between the two groups of limit locking components (12).
3. The hollow thin-wall bridge pier seismic test device according to claim 2 is characterized in that: The limit locking assembly (12) comprises a support strip (121), a locking rod (122), a positioning through hole (123), a bottom plate (124) and an electric telescopic rod (125); the support strip (121) is provided with a front side of a guide rail plate (13); the bottom of the support strip (121) is provided with a bottom plate (124) at intervals, and the bottom plate (124) is fixedly connected to the test platform (6); the electric telescopic rod (125) is installed on the bottom plate (124); the output end of the electric telescopic rod (125) is fixedly connected to the support strip (121); a plurality of groups of locking rods (122) are evenly fixed on the inner side surface of the support strip (121); a plurality of groups of penetrating positioning through holes (123) are evenly provided inside the guide rail plate (13), and the positioning through holes (123) are adapted to the locking rod (122).
4. The hollow thin-wall bridge pier seismic test device according to claim 3 is characterized by: The support assembly (7) comprises a pressure baffle plate (71), a connecting support plate (72), a transverse plate (73) and an L-shaped buckle (74); the transverse plate (73) is transversely arranged between two groups of support strips (121); both groups of support strips (121) are fixedly provided with an L-shaped buckle (74), and both ends of the transverse plate (73) are snapped into the L-shaped buckle (74); two groups of pressure baffle plates (71) are symmetrically arranged on upper and lower sides of the transverse plate (73); the pressure baffle plates (71) are fixedly connected to the transverse plate (73) via the connecting support plate (72).
5. The hollow thin-wall bridge pier seismic test device according to claim 4 is characterized in that: Limiting blocks (731) are provided near both ends of the transverse plate (73), and the limiting blocks (731) are located inside the L-shaped buckle (74).
6. The hollow thin-wall bridge pier seismic test device according to claim 1, characterized in that: A rib plate (31) is fixedly provided on the outside of the rigid metal protection net (3), and both ends of the rib plate (31) are fixedly connected to the column (2).
7. The hollow thin-wall bridge pier seismic test device according to claim 2, characterized in that: A bottom baffle plate (61) with an L-shaped structure is fixedly provided on the test platform (6) between the two sets of guide rail plates (13).