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大流量渡槽上部结构质量很大,远大于一般桥梁的上部结构,在地震作用下,惯性力很大.为减轻地震作用,常采用隔震支座.但在地震作用下,隔震支座的位移可能过大,为了控制支座位移,采用磁流变阻尼器来进一步控制,形成所谓智能隔震控制.首先给出了某大型渡槽智能化隔震模型.智能隔震结构由隔震支座和磁流变智能阻尼器构成,然后对地震作用下的某大型渡槽进行时程分析.分析数据表明,智能隔震模型能有效减轻地震作用,同时又不会让渡槽槽身侧向位移太大,保证了槽身和支座的安全.
The superstructure of the large flow aqueduct is of great quality and much larger than the superstructure of a typical bridge and has a large inertia force under the action of an earthquake. In order to reduce the earthquake, the isolation bearing is often used, but under the action of an earthquake, Displacement may be too large, in order to control the displacement of the support, the use of magnetorheological damper to further control the formation of the so-called intelligent isolation control.Firstly, given a large-scale aqueduct intelligent isolation model.The intelligent isolation structure consists of isolation bearings And the magnetorheological intelligent damper, and then analyze the time-history of a large-scale aqueduct under the action of an earthquake.The analysis data show that the intelligent isolation model can effectively reduce the seismic effect without lateral displacement of the aqueduct body too much , To ensure the safety of the body and support.