Bridge longitudinal and transverse friction pendulum seismic isolation support

Abstract

The application relates to the field of engineering shock absorption technology and discloses a bridge longitudinal and transverse friction pendulum isolation bearing, which comprises embedded steel plates, bearing plate assemblies, joint sliding blocks and sliding limiting mechanisms, the embedded steel plates are detachably provided with the bearing plate assemblies, joint sliding blocks are slidably arranged between the two bearing plate assemblies, the joint sliding blocks can slide on the two bearing plate assemblies, the upper and lower sides of the joint sliding blocks are respectively provided in a curved surface shape matched with the two bearing plate assemblies, and the sliding limiting mechanisms are detachably connected to the upper bearing plates, and the sliding limiting mechanisms are used for restricting the sliding of the bridge. Through the technical scheme, the problem that the existing technology is difficult to adjust the shock absorption and support according to the different deformation and rotation amounts of the bridge in the longitudinal and transverse directions of the bridge is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering shock absorption technology, and in particular, relates to a bridge longitudinal and transverse friction pendulum isolation bearing. BACKGROUND

[0002] When a bridge is constructed, the width of the bridge deck gradually widens, the number of vehicles passing through the bridge body greatly increases, and the overall load of the bridge deck also increases, which causes the bridge body to bend and deform, and further causes the two ends of the bridge body to produce a turning angle. If the support of the bridge body is rigidly supported by the bridge, it will cause the bridge beam to crack, so a rotating structure needs to be used in the support device between the support and the bridge. The existing friction pendulum bearing is mostly supported by a spherical surface. The bridge can rotate in all directions on the bearing, but on the other hand, the bridge can rotate in multiple directions, which causes the bridge to lose some stability when it is supported.

[0003] The existing support is mostly supported by a spherical surface, and when the bridge slides, the friction and displacement of the spherical surface during sliding are used for shock absorption, but this also causes the isolation period in all directions to be the same, and the deformation and rotation of the bridge in the longitudinal direction and the transverse direction of the bridge are different, which makes it difficult to adjust the shock absorption requirements in different directions. SUMMARY

[0004] The present application provides a bridge longitudinal and transverse friction pendulum isolation bearing, which solves the problem that it is difficult to adjust the shock absorption and support according to the different deformation and rotation of the bridge in the longitudinal direction and the transverse direction of the bridge.

[0005] The technical scheme of the present application is as follows:

[0006] The bridge longitudinal and transverse friction pendulum seismic isolation support comprises an upper embedded steel plate, a lower embedded steel plate, a support plate assembly, a joint sliding block and a sliding limiting mechanism, the upper embedded steel plate is fixedly installed on a bridge, the lower embedded steel plate is fixedly installed on a bridge support, the lower embedded steel plate is aligned with the upper embedded steel plate, the upper embedded steel plate and the lower embedded steel plate are detachably provided with the support plate assembly, two support plate assemblies are oppositely arranged, a joint sliding block is slidably arranged between the two support plate assemblies, the joint sliding block is extruded by the two support plate assemblies, the joint sliding block can slide on the two support plate assemblies, the upper and lower sides of the joint sliding block are respectively provided in a curved surface shape matched with the two support plate assemblies, a plurality of sliding limiting mechanisms are detachably connected to the upper embedded steel plate and the lower embedded steel plate, the sliding limiting mechanism arranged on the upper embedded steel plate is in contact with the support plate assembly arranged on the lower embedded steel plate, the sliding limiting mechanism arranged on the lower embedded steel plate is in contact with the support plate assembly arranged on the upper embedded steel plate, and the sliding limiting mechanism is used for restricting the sliding of the bridge.

[0007] Grooves are formed in the upper embedded steel plate and the lower embedded steel plate, a damping rubber pad is arranged in the grooves, and the support plate assembly is detachably arranged in the grooves and attached to the damping rubber pad.

[0008] The support plate assembly comprises a support plate frame, a lower concave arc surface one and a lower concave arc surface two, the support plate frame is detachably arranged in the groove, the support plate frame is arranged in a rectangular shape, the support plate frame is in contact with the sliding limiting mechanism, the lower concave arc surface one is arranged at the central position in the support plate frame, two lower concave arc surfaces two are arranged in the support plate frame, the two lower concave arc surfaces two are arranged on the two sides of the lower concave arc surface one, the two lower concave arc surfaces two are tangent to the lower concave arc surface one, the joint sliding block can slide along the lower concave arc surface one, and the joint sliding block can be in contact with the lower concave arc surface two.

[0009] The lower concave arc surface two and the lower concave arc surface one are curved away from the support plate frame, and the curvature radius of the lower concave arc surface two is smaller than that of the lower concave arc surface one. The sliding range of the joint sliding block on the lower concave arc surface one is greater than the reciprocating sliding range of the joint sliding block on the lower concave arc surface two and the lower concave arc surface one.

[0010] The joint sliding block comprises a clamping sheet, two sliding block base plates and two sliding plates, a plurality of through holes are formed in the clamping sheet, the two sliding block base plates are detachably connected to the two sides of the clamping sheet, the two sliding plates are detachably connected to the clamping sheet, the two sliding plates are respectively arranged on the sides of the two sliding block base plates away from the clamping sheet, the sliding plates are in contact with the lower concave arc surfaces, and the two sides of each sliding plate close to the two lower concave arc surfaces two are provided with arc surfaces matched with the lower concave arc surfaces two.

[0011] The sliding limiting mechanism comprises two trapezoidal supports and a plurality of damping rubber pads two, the two trapezoidal supports are detachably connected to the upper embedded steel plate or the lower embedded steel plate, and the plurality of damping rubber pads two are fixedly connected to the two trapezoidal supports and can be in contact with the support plate frame.

[0012] A plurality of connecting steel frames are fixedly connected between the upper embedded steel plate and the lower embedded steel plate.

[0013] The working principle and beneficial effects of the present application are as follows:

[0014] 1. In the present application, the support plate assembly is provided, the sliding range of the support plate assembly in two directions is different and can be selected according to requirements, the sliding range in two directions is different, thereby the direction mainly for damping is formed, and the sliding range in the other direction is used for elastically controlling the rotation direction of the bridge, thereby the service life of the whole support is reduced.

[0015] 2. In the present application, the joint sliding block is provided, the side curvature of the joint sliding block in contact with the support plate assembly can be adjusted according to the support plate assembly, thereby the joint sliding block is matched with the support plate assembly, when the bridge rotates, the damping effect of the bridge is adjusted through the joint sliding block and the support plate assembly, and the damping effects in the longitudinal direction and the transverse direction of the bridge can be adjusted respectively.

[0016] 3. In the present application, the support plate assembly and the joint sliding block are matched and adjusted, thereby the damping effects of the bridge in the longitudinal direction and the transverse direction are adjusted respectively, compared with the traditional friction pendulum support, the damping effects in all directions are the same, the damping effects in the longitudinal direction and the transverse direction are different and can be adjusted respectively in the present application, the damping effects in different directions are targetedly enhanced, the sliding limiting mechanism is provided, the support plate assembly in the opposite position is pushed and damped, the pressure of the support plate assembly for damping is reduced, and the bridge is assisted to reset. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0018] Fig. 1 It is the whole structure schematic view in the application;

[0019] Fig. 2 It is another view structure schematic view of the whole in the application;

[0020] Fig. 3 It is the local internal structure schematic view of the upper embedded steel plate and the lower embedded steel plate in the application;

[0021] Fig. 4 It is the internal section structure schematic view of the support plate frame and the joint slider in the application;

[0022] Fig. 5 It is the structure schematic view of two support plate frames in the application;

[0023] Fig. 6 It is the internal section structure schematic view of the whole in the application;

[0024] Fig. 7 It is the internal section structure schematic view of the slider pad and the slide plate in the application.

[0025] In the figure: 1, upper embedded steel plate; 2, lower embedded steel plate; 3, shock absorbing rubber pad one; 4, support plate frame; 5, lower concave arc surface one; 6, lower concave arc surface two; 7, clamping piece; 8, slider pad; 9, slide plate; 10, trapezoidal support; 11, shock absorbing rubber pad two; 12, connecting steel frame. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative work are involved in the protection scope of the application.

[0027] As Figs. 1-7The embodiment shown provides a bridge longitudinal and transverse friction pendulum seismic isolation support, which comprises an upper embedded steel plate 1, a lower embedded steel plate 2, a support plate assembly, a joint sliding block and a sliding limiting mechanism, the upper embedded steel plate 1 is fixedly installed on the bridge, the lower embedded steel plate 2 is fixedly installed on the bridge support, the lower embedded steel plate 2 is aligned with the upper embedded steel plate 1, the upper embedded steel plate 1 and the lower embedded steel plate 2 are both detachably provided with the support plate assembly, the two support plate assemblies are oppositely arranged, the two support plate assemblies are cross-shaped, the joint sliding block is slidably arranged between the two support plate assemblies, the two support plate assemblies extrude the joint sliding block, the joint sliding block can slide on the two support plate assemblies, the upper and lower sides of the joint sliding block are respectively provided with curved surfaces matched with the two support plate assemblies, a plurality of sliding limiting mechanisms are detachably connected to the upper embedded steel plate 1 and the lower embedded steel plate 2, the sliding limiting mechanism arranged on the upper embedded steel plate 1 is in contact with the support plate assembly arranged on the lower embedded steel plate 2, the sliding limiting mechanism arranged on the lower embedded steel plate 2 is in contact with the support plate assembly arranged on the upper embedded steel plate 1, and the sliding limiting mechanism is used for restricting the sliding of the bridge. A plurality of connecting steel frames 12 are fixedly connected between the upper embedded steel plate 1 and the lower embedded steel plate 2. The traditional friction pendulum support is circular, so that the joint sliding block slides and reduces vibration in multiple directions. In the application, the lengths of the two directions of the two support plate assemblies are different, so that the sliding range of the joint sliding block on the support plate assembly in the two directions is different. The two support plate assemblies are vertically arranged, so that the bridge slides on the two support plate assemblies when rotating in the transverse and longitudinal directions. The support plate frames 4 on the two support plate assemblies can also be arranged at the same time, and the joint sliding block is adjusted in a matched manner. The two sides of the joint sliding block are matched with the two support plate assemblies, respectively, so as to adjust the transverse and longitudinal directions, respectively. According to the actual situation of the bridge, appropriate support plate assemblies are selected, and the sliding limiting mechanism can limit the sliding of the support plate assemblies at the opposite positions. The traditional limiting method is to set a structure for limiting the other side of the support plate assembly on one side of the support plate assembly. The sliding limiting mechanism limits the support plate assemblies at the opposite positions, reduces the pressure of the bolts for fixing the support plate assemblies, and improves the shock absorption effect of the support plate assemblies. The two ends of the connecting steel frame 12 are detachably connected with the upper embedded steel plate 1 and the lower embedded steel plate 2. The connecting steel frame 12 is used for positioning the upper embedded steel plate 1 and the lower embedded steel plate 2. When the upper embedded steel plate 1 and the lower embedded steel plate 2 are installed, the connecting steel frame 12 can be hoisted and placed and installed as a whole.

[0028] As Figs. 1-6As shown, the upper embedded steel plate 1 and the lower embedded steel plate 2 are both provided with a groove position, a damping rubber pad 3 is arranged in the groove position, the support plate assembly is detachably arranged in the groove position and is attached to the damping rubber pad 1, the support plate frame 4 is fixed on the upper embedded steel plate 1 or the lower embedded steel plate 2 by bolts, and the part of the support plate frame 4 extending into the groove position is in contact with the damping rubber pad 1, when being extruded, the two support plate frames 4 extrude the joint sliding block, at this time, the damping rubber pad can damp the pressure of the support plate frame 4.

[0029] As shown in the figure, Figs. 4-6 The support plate assembly includes a support plate frame 4, a lower concave arc surface 1 5 and a lower concave arc surface 2 6, the support plate frame 4 is detachably arranged in the groove position, the support plate frame 4 is arranged in a rectangular shape, the support plate frame 4 is in contact with the sliding limiting mechanism, the lower concave arc surface 1 5 is arranged at the central position of the support plate frame 4, two lower concave arc surfaces 2 6 are arranged in the support plate frame 4, the two lower concave arc surfaces 2 6 are arranged on both sides of the lower concave arc surface 1 5, the two lower concave arc surfaces 2 6 are tangent to the lower concave arc surface 1 5, the joint sliding block can slide along the lower concave arc surface 1 5, the joint sliding block can be in contact with the lower concave arc surface 2 6, the lower concave arc surface 2 6 and the lower concave arc surface 1 5 are curved away from the support plate frame 4, the bending radius of the lower concave arc surface 2 6 is smaller than that of the lower concave arc surface 1 5, the sliding range of the joint sliding block on the lower concave arc surface 1 5 is greater than the reciprocating sliding range on the lower concave arc surface 2 6 and the lower concave arc surface 1 5, the two support plate frames 4 are parallel to the longitudinal and transverse directions of the bridge body respectively, when the bridge rotates, the joint sliding block reciprocally slides on the lower concave arc surface 1 5, the two support plate frames 4 slide in two directions on the joint sliding block respectively, the two sides of the joint sliding block correspond to the two support plate frames 4 respectively, and the curvature of the position on each side of the joint sliding block close to the lower concave arc surface 2 6 corresponds to the lower concave arc surface 2 6, when the bridge rotates in the longitudinal direction, the joint sliding block slides on the lower concave arc surface 1 5 on the longitudinal support plate frame 4, at the same time, the joint sliding block slides in the longitudinal direction on the transverse support plate frame 4 and reaches the lower concave arc surface 2 6, the radius of the lower concave arc surface 2 6 is smaller, the friction force and pressure generated can push the joint sliding block to slide to the position of the lower concave arc surface 1 5, the joint sliding block can slide in multiple directions on the support plate frame 4, but the sliding range is larger in the direction along the lower concave arc surface 1 5, and the joint sliding block can be subjected to a greater force for resetting in the direction perpendicular to the lower concave arc surface 1 5, and is quickly reset, compared with the friction pendulum bearing which controls the joint sliding block to slide in the transverse and longitudinal directions, the support plate frame 4 in the present application can slide in a large range in one direction and in a small range in other directions, thereby elastically limiting the sliding range of the joint sliding block.

[0030] As shown in the figure, Figs. 4-7As shown, the joint slider includes clamping sheet 7, slider base plate 8 and slide plate 9, a plurality of through holes are formed on the clamping sheet 7, two slider base plates 8 are detachably connected on the two sides of the clamping sheet 7, and two slide plates 9 are detachably connected on the clamping sheet 7, the two slide plates 9 are respectively arranged on the sides of the two slider base plates 8 away from the clamping sheet 7, the slide plate 9 is in contact with the lower concave arc surface one 5, the slide plate 9 is provided with an arc surface corresponding to the lower concave arc surface two 6 on the two sides close to the two lower concave arc surface two 6, the slide plate 9 can be in contact with the lower concave arc surface two 6, the arc of the slider base plate 8 is matched with the type of the support plate frame 4, and the type of the slide plate 9 is also selected, which can be selected according to the different support plate frames 4, the slider base plates 8 and the slide plates 9 on the two sides of the clamping sheet 7 are respectively arranged corresponding to the support plate frames 4 on the upper and lower sides, the slider base plates 8 and the slide plates 9 on the two sides are also arranged vertically, when the transverse and longitudinal shock absorption of the bridge is set differently, the support plate frame 4, the slider base plate 8 and the slide plate 9 can be arranged correspondingly, and then the transverse and longitudinal shock absorption effects are adjusted respectively.

[0031] As shown in the figure, Figs. 4-6 As shown, the sliding limiting mechanism includes trapezoidal support 10 and damping rubber pad two 11, the trapezoidal support 10 is detachably connected on the upper embedded steel plate 1 or the lower embedded steel plate 2, a plurality of damping rubber pad two 11 are fixedly connected on the trapezoidal support 10, the damping rubber pad two 11 can be in contact with the support plate frame 4, the damping rubber pad two 11 on the plurality of trapezoidal supports 10 can be in contact with the two sides near the two ends of the lower concave arc surface one 5 on the support plate frame 4, the damping rubber pad two 11 can reduce the sliding of the support plate frame 4 on the opposite position, for example, the support plate frame 4 fixed on the upper embedded steel plate 1 is parallel to the bridge in the bridge direction, when the bridge rotates in the bridge direction, the support plate frame 4 on the upper embedded steel plate 1 slides in the bridge direction on the joint slider, the trapezoidal support 10 on the lower embedded steel plate 2 reduces the sliding of the support plate frame 4 on the upper embedded steel plate 1 in the bridge direction, after the bridge rotates and recovers, the damping rubber pad two 11 can also push the support plate frame 4 to reset, compared with the traditional limiting method, the shear force of the bolt fixing the support plate frame 4 is also reduced.

[0032] In the embodiment, the upper embedded steel plate 1 and the lower embedded steel plate 2 can be set according to the different damping effects of the bridge in the longitudinal direction and the transverse direction of the bridge. Different types of support plate frames 4 can be arranged on the upper embedded steel plate 1 and the lower embedded steel plate. The inner concave arc surface one 5 and the concave arc surface two 6 have different bending degrees. The slider pad 8 and the sliding plate 9 are adjusted. When the bridge rotates, the joint slider can slide on the concave arc surface one 5. When sliding in the direction perpendicular to the concave arc surface one 5, the slider pad 8 and the sliding plate 9 are in contact with the concave arc surface two 6. The bending radius of the concave arc surface two 6 is smaller, which can push the joint slider back to the initial position. When the bridge rotates, the damping rubber pad two 11 on the trapezoidal support 10 can dampen the sliding of the support plate frame 4 in the opposite position and push it back to the original position, thereby meeting the targeted setting of different directions of vibration.

[0033] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bridge longitudinal-transverse friction pendulum seismic isolation bearing, characterized by, The utility model relates to a bridge support structure, including: The upper pre -buried steel sheet (1) fixed installation is in bridge; The lower pre -buried steel sheet (2) fixed installation is in bridge body support, the lower pre -buried steel sheet (2) with the upper pre -buried steel sheet (1) alignment, the upper pre -buried steel sheet (1) with the lower pre -buried steel sheet (2) all can detachably be provided with support plate assembly on, Two support plate assemblies are oppositely arranged, a joint slider is slidably arranged between the two support plate assemblies, the joint slider is extruded by the two support plate assemblies, and the joint slider can slide on the two support plate assemblies. The upper and lower sides of the joint slider are respectively provided as curved surfaces matched with the two support plate assemblies. A plurality of sliding limiting mechanisms are detachably connected to the upper pre-buried steel plate (1) and the lower pre-buried steel plate (2), the sliding limiting mechanism arranged on the upper pre-buried steel plate (1) is in contact with the support plate assembly arranged on the lower pre-buried steel plate (2), and the sliding limiting mechanism arranged on the lower pre-buried steel plate (2) is in contact with the support plate assembly arranged on the upper pre-buried steel plate (1), and the sliding limiting mechanism is used for restricting the sliding of the bridge. The upper pre-buried steel plate (1) and the lower pre-buried steel plate (2) are both provided with a groove, a damping rubber pad (3) is arranged in the groove, and the support plate assembly is detachably arranged in the groove and is attached to the damping rubber pad (3). The support plate assembly comprises: A support plate frame (4) is detachably arranged in the groove, the support plate frame (4) is provided in a rectangular shape, and the support plate frame (4) is in contact with the sliding limiting mechanism. A lower concave arc surface (5) is arranged at a central position in the support plate frame (4). Two lower concave arc surfaces (6) are arranged in the support plate frame (4), and the two lower concave arc surfaces (6) are respectively arranged on the two sides of the lower concave arc surface (5), and the two lower concave arc surfaces (6) are tangent to the lower concave arc surface (5). The joint slider can slide along the lower concave arc surface (5), and the joint slider can be in contact with the lower concave arc surface (6). The lower concave arc surface (6) and the lower concave arc surface (5) are curved away from the support plate frame (4), and the curvature of the lower concave arc surface (6) is smaller than that of the lower concave arc surface (5). The range of the joint slider sliding on the lower concave arc surface (5) is greater than the range of the joint slider reciprocating on the lower concave arc surface (6) and the lower concave arc surface (5).

2. The bridge longitudinal-transverse friction pendulum seismic isolation bearing according to claim 1, characterized in that, The joint slider comprises: A clamping piece (7) is provided with a plurality of through holes. Two slider pads (8) are detachably connected to the two sides of the clamping piece (7). Two sliding plates (9) are detachably connected to the clamping pieces (7), and the two sliding plates (9) are arranged on the sides, away from the clamping pieces (7), of the sliding block base plates (8) and are in contact with the lower concave arc surfaces (5), and the sliding plates (9) are provided with arc surfaces corresponding to the lower concave arc surfaces (6) on the two sides close to the two lower concave arc surfaces (6), and the sliding plates (9) can be in contact with the lower concave arc surfaces (6).

3. The bridge longitudinal-transverse friction pendulum seismic isolation bearing according to claim 2, characterized in that, The sliding limiting mechanism comprises: A trapezoidal support (10) is detachably connected to the upper embedded steel plate (1) or the lower embedded steel plate (2); A plurality of damping rubber pads (11) are fixedly connected to the trapezoidal supports (10), and the damping rubber pads (11) can be in contact with the support plate frames (4).

4. The bridge longitudinal-transverse friction pendulum seismic isolation bearing according to claim 3, characterized in that, The damping rubber pads (11) on the trapezoidal supports (10) can be in contact with the two sides close to the two ends of the lower concave arc surfaces (5) on the support plate frames (4), respectively.

5. The bridge longitudinal-transverse friction pendulum seismic isolation bearing according to claim 1, characterized in that, A plurality of connecting steel frames (12) are fixedly connected between the upper embedded steel plate (1) and the lower embedded steel plate (2).

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