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A shock absorbing device for self-locking connection system of continuous girder bridge

A technology of shock absorption device and system, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of high cost, complicated inspection and maintenance, few examples of bridge earthquake resistance, etc., and achieves low cost, easy inspection and maintenance, and durability. Good results

Active Publication Date: 2015-10-14
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, some scholars have proposed the Lock-up device. From a technical point of view, it can realize the coordinated force bearing of each pier. However, this device is not only expensive, but also complicated to check and maintain later, and the operation and maintenance costs are high. Therefore, it is used in bridges. Less examples of earthquake resistance

Method used

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  • A shock absorbing device for self-locking connection system of continuous girder bridge
  • A shock absorbing device for self-locking connection system of continuous girder bridge
  • A shock absorbing device for self-locking connection system of continuous girder bridge

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Embodiment Construction

[0020] The following will be described in further detail in conjunction with examples and accompanying drawings, but not as a limitation to the present invention.

[0021] The structure of this embodiment is as figure 1 As shown, under normal conditions, the longitudinal pressure-bearing steel plate and the upper jaw steel plate can slide freely along the longitudinal direction with the beam body to meet the requirements of the longitudinal displacement change of the bridge. Any constraints arising from the displacement between.

[0022] Such as figure 2 with image 3 As shown, when an earthquake occurs, the large-tonnage continuous beam bridge self-locking (safe-locking) connection device activated by the earthquake acceleration, under the action of the earthquake acceleration, the upper jaw steel plate and the supporting steel seat pad slide relative to each other and slide down, so that the upper jaw steel plate and the supporting steel seat cushion slide down. The mech...

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Abstract

The invention relates to the technical field of bridge damping, in particular to a self-locking connecting system damping device of a continuous girder bridge. The self-locking connecting system damping device comprises a lower jaw steel plate (1), an upper jaw steel plate (2), a longitudinal pressure-bearing steel plate (3) and support steel seat pads (4). The lower jaw steel plate (1) is fixed on a pier-top embedded steel plate through high-strength bolts; the support steel seat pads (4) are welded on the surface of the lower jaw steel plate (1); the upper jaw steel plate (2) is supported on the support steel seat pads (4); the longitudinal pressure-bearing steel plate (3) is fixed on the bottom surface of a bridge girder body through high-strength bolts. The self-locking connecting system damping device is simple in structure, low in cost and simple and convenient to mount and maintain; a continuous girder can be locked on piers instantaneously when an earthquake happens to enable sliding girders to collaboratively bear load according to self shock resistance so as to bear earthquake force jointly; under the condition of not enhancing existing shock resistance of fixed piers, the purpose of improving overall shock resistance of the continuous girder bridge is achieved, and the self-locking connecting system damping device is applicable to the continuous girder bridge or similar structural systems.

Description

technical field [0001] The present invention relates to a continuous girder bridge safe-locking connection system damping device, which is suitable for railway bridges, highway bridges, urban viaducts and various large continuous girder structure buildings for new construction or seismic reinforcement, and can make the structure under the action of sudden earthquake Coordinated stress, improve the overall seismic performance of the structure. Background technique [0002] In order to reduce the seismic response of continuous girder bridges and improve the seismic performance of continuous girder bridges, shock absorbing measures such as shock absorbers, isolation bearings and viscous dampers are usually used for continuous girder bridges, such as lead rubber bearings, viscous dampers, etc. Wait. However, the current conventional schemes do not change the current situation that the fixed piers of continuous girder bridges are loaded independently, and the existing seismic ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/04
Inventor 张文学刘海陆陈壮黄荐李增银谢全懿寇文琦赵阳
Owner BEIJING UNIV OF TECH
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