Bridge anti-seismic damper self-adaptive to daily operation load longitudinal displacement response
A longitudinal displacement and self-adaptive technology, applied in the direction of bridges, bridge construction, bridge parts, etc., can solve the problems of difficulty in adapting to the large stroke of the seismic damper, unavoidable frequent reciprocating impact, and the loss of seismic function of the damper, etc., to reduce the bridge Maintenance cost, good vibration displacement, effect of improving seismic performance
Pending Publication Date: 2021-03-26
CCCC ROAD & BRIDGE SPECIAL ENG +1
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Problems solved by technology
When the damper in the above technical solution is used in a long-span bridge, the longitudinal dimensions of the oblong pin hole and the gap unit are difficult to adapt to the large stroke of the anti-seismic damper. When the gap size is too large, the damper will easily lose its anti-seismic function. ; In addition, frequent reciprocating impacts inevitably occur in pin holes and gap units during earthquakes, and the strength requirements for components such as pin shafts and gap unit limiters are much higher than ordinary structural designs, and they are easily damaged during earthquakes , poor structural safety performance
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[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0042] It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are conventional methods, and the reagents and materials, if not otherwise specified, can be obtained from commercial sources; in the description of the present invention, The terms "landscape", "portrait", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", The orientation or positional relationship indicated by "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have Certain orientations, co...
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The invention discloses a bridge anti-seismic damper self-adaptive to daily operation load longitudinal displacement response, comprising: a speed locking device which is horizontally arranged and oneend of which is in pin joint with a cross beam of a bridge tower; a damping device which is parallel to the speed locking device, one end of the damping device is in pin joint with the main beam, andthe other end of the damping device is fixedly connected with the other end of the speed locking device through a series connection piece; wherein the speed locking device is used for adapting to therelative displacement of the main beam and the bridge tower under the daily operation load, and the damping device is used for limiting the relative displacement of the main beam and the bridge towerwhen the external load exceeds a preset threshold value. Under the daily operation load, the damping device does not work, self-adaption is conducted on beam body displacement through the speed locking device, and abrasion to the damping device is reduced; under the impact loads of earthquakes, brakes and the like, the speed locking device is locked, the damping device rapidly responds to generate damping force on beam body displacement, and the good restraining effect on high-frequency, rapid and large-amplitude displacement is achieved.
Description
technical field [0001] The invention relates to the technical field of bridge structure vibration control. More specifically, the present invention relates to a bridge anti-seismic damper adaptive to the longitudinal displacement response of daily operating loads. Background technique [0002] For flexible structural bridges represented by cable-stayed bridges and suspension bridges, the displacement of the beam body is relatively large under daily operating loads (temperature, vehicle and average wind loads, etc.), and greater beam displacement will occur under additional loads such as earthquakes , will inevitably cause earthquake damage such as expansion joint damage and affect traffic safety. In order to effectively reduce the adverse impact of earthquakes on structural safety, structural shock absorption and isolation technologies and products have been widely used. Among them, the velocity-dependent viscous damper is effective and stable, and can adapt to structural d...
Claims
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Login to View More IPC IPC(8): E01D19/00
CPCE01D19/00
Inventor 朱世峰贺果蒙曾松亭朱慈祥韩永平陈卓邓勇桑毅彩谭焱全小娟乐绍林刘昂陈小伟王伟黄茜茹
Owner CCCC ROAD & BRIDGE SPECIAL ENG