Inhaul cable anti-beam-falling seismic mitigation and isolation support

Abstract

The utility model discloses an inhaul cable anti-beam-falling seismic mitigation and isolation support, which belongs to the field of bridge engineering components and comprises a lower seat plate and a middle plate, the middle plate is fixedly connected onto the lower seat plate through fixing bolts, the bottom of the lower seat plate is fixedly connected with an anchoring part, the top of the middle plate is connected with a pre-embedded steel plate, and the pre-embedded steel plate is fixedly connected with the lower seat plate. Sleeves are fixedly connected to the tops of the embedded steel plates, connecting bolts are connected to the tops of the anchoring parts and the bottoms of the sleeves, the outer walls of the connecting bolts are sleeved with inhaul cables, and adjusting sleeves are fixedly connected to the ends, opposite to the inhaul cables, of the outer walls of the connecting bolts on the set of anchoring parts and the set of sleeves. The interiors of the opposite ends of the two adjusting sleeves are jointly in threaded connection with a lead screw. Through deformation of the inhaul cable ropes and the fixing bolts, energy is consumed for sliding displacement, the function of preventing the beam body from falling off is achieved, through arrangement of the inhaul cable ropes and the connecting bolts, the structure is simple, stress is definite, the seismic reduction and isolation function is achieved, and the beam body is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering components, in particular to a cable-stayed anti-falling beam and seismic isolation bearing. Background Art

[0002] The basic principle of friction pendulum isolation bearings (FPS) is to isolate the bridge superstructure and substructure as much as possible through bearings. The introduction of friction pendulum isolation bearings can extend the natural vibration period of the bridge structure, thereby avoiding the dominant period of seismic motion, thereby reducing the energy transmitted to the bridge pier structure by the earthquake, ultimately achieving the goal of reducing the internal forces of the pier columns and ensuring bridge safety.

[0003] Friction pendulum isolation bearings (FPS) can generate pendulum-like motion in bridge superstructures, dissipating seismic energy. Because the sliding surface of a friction pendulum isolation bearing is an arc, when the bearing slips and deviates from its equilibrium position during an earthquake, the deadweight of the superstructure generates a horizontal restoring force on the bearing. This restoring force causes the bearing to slide back and forth in its equilibrium position, resulting in excellent self-restoring and seismic isolation capabilities. However, under rare earthquakes, friction pendulum isolation bearings still face the risk of damage due to excessive seismic displacement, leading to beam collapse. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present utility model is to provide a cable-stayed anti-beam-falling seismic isolation bearing to solve the problem in the prior art that under the action of rare earthquakes, the friction pendulum seismic isolation bearing is still damaged due to excessive seismic displacement, thereby causing the risk of falling beams.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A cable-type anti-fall beam seismic isolation bearing comprises a lower seat plate and an intermediate plate, the intermediate plate being fixedly connected to the lower seat plate by fixing bolts, the bottom of the lower seat plate being fixedly connected to multiple groups of anchors, the top of the intermediate plate being connected to an embedded steel plate, the top of the embedded steel plate being fixedly connected to multiple groups of sleeves, the tops of the multiple groups of anchors and the bottoms of the sleeves being connected to connecting bolts, the outer walls of the connecting bolts being sleeved with cable ropes, the opposite ends of the cable ropes on the outer walls of the connecting bolts on one group of anchors and one group of sleeves being fixedly connected to adjusting sleeves, the opposite ends of the two groups of adjusting sleeves being commonly threadedly connected to a screw rod.

[0007] As a further solution of the present invention: the outer wall of the screw rod has two groups of thread grooves, and the two groups of thread grooves rotate in opposite directions.

[0008] As a further solution of the present invention: the outer walls of the two groups of adjustment sleeves are both provided with anti-slip grooves.

[0009] As a further solution of the present invention: a fixing buckle is provided on the outer wall of the pull rope.

[0010] As a further solution of the present invention: a thread is formed on the outer wall of one end of the connecting bolt.

[0011] As a further solution of the present invention: a bolt cap is threadedly connected to the threaded line.

[0012] As a further solution of the present invention: an arc-shaped groove is provided on the outer wall of one end of the connecting bolt.

[0013] Beneficial effects of the utility model:

[0014] The utility model consumes energy of sliding displacement and prevents the beam from falling off by deforming the tension ropes and fixing bolts during an earthquake. The arrangement of the tension ropes and connecting bolts has a simple structure, clear force, and a shock-absorbing and isolating function, and prevents the beam from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the pull rope and the adjustment sleeve in the utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the lower seat plate and the middle plate of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall structure of the connecting bolt in the utility model.

[0020] In the figure: 1. Lower seat plate; 2. Middle plate; 201. Spherical slide plate; 202. Spherical crown lining plate; 203. Upper plane slide plate; 204. Upper seat plate; 3. Embedded steel plate; 4. Anchor; 5. Sleeve; 6. Connecting bolt; 601. Arc groove; 602. Threaded line; 603. Bolt cap; 7. Pull rope; 8. Adjusting sleeve; 801. Screw rod; 9. Fixing buckle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1-4 As shown, a cable anti-fall beam seismic isolation bearing comprises a lower seat plate 1 and an intermediate plate 2. The intermediate plate 2 is fixedly connected to the lower seat plate 1 by fixing bolts. The bottom of the lower seat plate 1 is fixedly connected to multiple groups of anchors 4. The top of the intermediate plate 2 is connected to an embedded steel plate 3. The top of the embedded steel plate 3 is fixedly connected to multiple groups of sleeves 5. The tops of the multiple groups of anchors 4 and the bottoms of the sleeves 5 are all connected to connecting bolts 6. The outer walls of the connecting bolts 6 are all sleeved with cable ropes 7. The opposite ends of the cable ropes 7 on the outer walls of the connecting bolts 6 on a group of anchors 4 and a group of sleeves 5 are fixedly connected to an adjustment sleeve 8. The two sets of adjusting sleeves 8 are commonly threadedly connected to the screw rod 801 at the opposite ends. By rotating the two sets of adjusting sleeves 8, the threads on the outer wall of the screw rod 801 are moved to adjust the distance between the two sets of adjusting sleeves 8, thereby adjusting the length between the two sets of pulling ropes 7. The outer wall of the screw rod 801 has two sets of thread grooves, and the two sets of thread grooves rotate in opposite directions. The two sets of thread grooves arranged in opposite directions make it convenient for the user to screw the adjusting sleeve 8. The outer walls of the two sets of adjusting sleeves 8 are provided with anti-slip grooves, and the outer wall of the pulling rope 7 is provided with a fixing buckle 9, so that it is fixed into a loop at the end.

[0023] The above-mentioned middle cable rope 7 is a flexible structure, and the cable is any one of a steel wire rope, a steel strand, and a carbon fiber rope.

[0024] A spherical skateboard 201 is provided on the middle plate 2, a spherical crown lining plate 202 is provided on the spherical skateboard 201, an upper plane skateboard 203 is provided on the spherical crown lining plate 202, an upper seat plate 204 is fixedly connected to the upper plane skateboard 203, a spherical skateboard mounting groove is provided on the upper surface of the middle plate 2, an upper plane skateboard mounting groove is provided on the upper surface of the spherical crown lining plate 202, and the upper plane skateboard 203 realizes the daily sliding of the bridge.

[0025] like Figure 1 and Figure 3 As shown, the length extending between the connecting bolts 6 on the opposite side of the above-mentioned lower and middle seat plates 1 and the embedded steel plate 3 can make the tension rope 7 parallel after being sleeved on the outer wall of the connecting bolt 6, which is beneficial to the deformation energy dissipation of the flexible cantilever and increases the overall seismic isolation and energy dissipation capacity of the support.

[0026] like Figure 1 and Figure 4 As shown, a threaded line 602 is provided on the outer wall of one end of the connecting bolt 6. The setting of the threaded line 602 facilitates the installation of the connecting bolt 6 on the embedded steel plate 3 or the lower seat plate 1. At the same time, a bolt cap 603 is threadedly connected to the threaded line 602. The connecting bolt 6 is fixed by tightening the bolt cap 603 to improve the stability of the installation. At the same time, an arc groove 601 is provided on the outer wall of one end of the connecting bolt 6. The arc groove 601 is used to limit the pull rope 7 to prevent the pull rope 7 from falling off the connecting bolt 6.

[0027] The working principle of the present utility model is as follows: during installation, multiple groups of connecting bolts 6 are respectively connected to the bottom of the embedded steel plate 3 at the bottom of the sleeve 5 and the lower seat plate 1 on the upper side of the anchor 4 through the threaded wire 602 at one end, and then the bolt cap 603 on the outer wall of the threaded wire 602 is rotated to fix the connecting bolt 6 to improve the stability of the installation, and then the two ends of the two groups of cable ropes 7 are respectively sleeved into the arc groove 601 on the outer wall of the connecting bolt 6 on the embedded steel plate 3 and the lower seat plate 1, and then the use length of the cable rope 7 is determined according to the horizontal seismic displacement and seismic force calculation, and then the two groups of adjusting sleeves 8 are respectively held with both hands, and the two groups of adjusting sleeves 8 are rotated in opposite directions. The two groups of adjusting sleeves 8 rotate on the outer wall of the screw rod 801 to extend and retract, thereby adjusting the length between the two groups of cable ropes 7, thereby facilitating the use of different lengths and improving the convenience of use.

[0028] When the beam is subjected to seismic loads and the horizontal force borne by the support is greater than the design value, the fixing bolts connecting the middle plate 2 and the lower seat plate 1 are cut off, releasing the seismic load. At this time, sliding occurs between the beam and the pier. At the same time, the connecting bolts 6 connected at both ends of the cable rope 7 flexibly connect the embedded steel plate 3 embedded in the beam and the lower seat plate 1 fixed on the top of the pier. The cable rope 7 and the connecting bolt 6 are deformed to consume energy of the sliding displacement and prevent the beam from falling off. Through the arrangement of the cable rope 7 and the connecting bolt 6, the structure is simple, the force is clear, and the seismic isolation function is provided, and the beam can be prevented from falling off.

[0029] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A cable anti-fall beam seismic isolation support, comprising a lower seat plate (1) and an intermediate plate (2), wherein the intermediate plate (2) is fixedly connected to the lower seat plate (1) by fixing bolts, the bottom of the lower seat plate (1) is fixedly connected to multiple groups of anchors (4), the top of the intermediate plate (2) is connected to an embedded steel plate (3), and the top of the embedded steel plate (3) is fixedly connected to multiple groups of sleeves (5), characterized in that: The tops of the multiple groups of anchors (4) and the bottoms of the sleeves (5) are all connected with connecting bolts (6), and the outer walls of the connecting bolts (6) are all sleeved with a pulling rope (7). The opposite ends of the pulling rope (7) on the outer walls of the connecting bolts (6) on one group of anchors (4) and one group of sleeves (5) are fixedly connected with an adjusting sleeve (8), and the opposite ends of the two groups of adjusting sleeves (8) are commonly threadedly connected with a screw rod (801) inside.

2. The cable anti-fall beam seismic isolation bearing according to claim 1, characterized in that: The outer wall of the screw rod (801) has two groups of thread grooves, and the two groups of thread grooves rotate in opposite directions.

3. The cable anti-fall beam seismic isolation bearing according to claim 1, characterized in that: The outer walls of the two groups of adjustment sleeves (8) are both provided with anti-slip grooves.

4. The cable anti-fall beam seismic isolation bearing according to claim 1, characterized in that: The outer wall of the pull rope (7) is provided with a fixing buckle (9).

5. The cable anti-fall beam seismic isolation bearing according to claim 1, characterized in that: A thread (602) is formed on the outer wall of one end of the connecting bolt (6).

6. The cable anti-fall beam seismic isolation bearing according to claim 5, characterized in that: A bolt cap (603) is threadedly connected to the thread line (602).

7. The cable anti-fall beam seismic isolation bearing according to claim 1, characterized in that: An arc-shaped groove (601) is formed on the outer wall of one end of the connecting bolt (6).

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