Continuous girder bridge anti-seismic self-locking support filled and limited by multi-graded particles
A particle and gradation technology, applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems of collision, misactivation of void spaces, etc., to achieve the effect of improving seismic capacity, buffering vertical seismic force, and avoiding false locking.
Inactive Publication Date: 2017-08-04
BEIJING UNIV OF TECH
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Problems solved by technology
This kind of support has simple structure, low cost, and is easy to maintain and maintain. However, there are problems of misactivation under normal conditions and collision problems between the gaps after locking, and its practicability needs to be improved.
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[0030] Further detailed description will be given below in conjunction with the embodiments and the accompanying drawings, but it is not intended to limit the present invention.
[0031] like figure 1 As shown, an embodiment of an anti-seismic self-locking bearing of a continuous girder bridge using multi-graded particles to fill and limit the position mainly includes: an upper connecting plate 1, a bearing body 2, a rubber cushion 3, a basin-shaped bottom plate 4, Horizontal trigger plate connector 5, horizontal trigger plate 6, annular baffle 7, fixed column 8, multi-grade particles 9, annular inclined baffle 10, horizontal baffle 11, spacer 12, vertical partition 13, bolt 14 , with hole backing plate 15, shaft 16, lower connecting plate 17.
[0032] For a 3-span prestressed continuous girder bridge in Beijing, which is located in the seismic fortification area of 8 degrees, the seismic self-locking bearing of the continuous girder bridge with multi-grade particle filling...
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The invention discloses a continuous girder bridge anti-seismic self-locking support filled and limited by multi-graded particles. The continuous girder bridge anti-seismic self-locking support filled and limited by the multi-graded particles comprises an upper connecting plate, a support main body, a rubber cushion layer, a basin type bottom plate, a horizontal trigger plate connecting piece, a horizontal trigger plate, an annular stopping plate, a fixed column, multi-graded particles, an annular inclined stopping plate, a horizontal stopping plate, a cushion block, a vertical partition plate, a bolt, a backing plate with a hole, a rotating shaft and a lower connecting plate. During normal using, the horizontal stopping plate is spliced on the horizontal triggering plate, the multi-graded particles are positioned in a particle container and the support main body and the rubber cushion layer can freely slide relative to each other so that girder-to-pier temperature shifting demand is met; when the relative displacement of a girder body and a sliding pier exceeds a set threshold in an earthquake, the horizontal stopping plate is separated from the horizontal triggering plate and rotates downward, and the multi-graded particles in the particle container fall into a gap between the support main body and the basin type bottom plate to limit the relative displacement of the girder body and the pier; therefore, a purpose that the sliding pier and a fixed pier bear force in a cooperative manner is achieved.
Description
technical field [0001] The invention relates to an anti-seismic self-locking bearing of a continuous girder bridge using multi-gradation particle filling and limiting, which is suitable for being installed at the connection between a pier and a beam body of a multi-span continuous girder bridge, and belongs to the technical field of bridge anti-seismic. Background technique [0002] Bearings are the connecting members connecting piers and decks in continuous girder bridges, and their mechanical properties and constraints significantly affect the overall performance of the bridge. In order to meet the displacement needs of continuous beam bridge piers under the action of temperature load, usually only one support is selected for horizontal restraint, thereby forming a fixed support, while the other supports are in a hinged state. In this state, the piers with fixed supports are called fixed piers, which are the main stress-bearing components, and the other piers are called sl...
Claims
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IPC IPC(8): E01D19/04
CPCE01D19/047
Inventor 闫维明杨慧何浩祥王宝顺崔涛
Owner BEIJING UNIV OF TECH