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-  2016 

FPB-LRB联合隔震性能研究
Study on the performance of FPB-LRB combined isolation

Keywords: FPB支座,LRB支座,联合作用,布设位置,隔震率
FPB bearing
, LRB bearing, combined action, layout position, isolation rate

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Abstract:

FPB支座和LRB支座都是目前较受欢迎的减隔震支座,各自有其独特的优缺点。借助一联3跨预应力混凝土箱梁桥,探讨FPB-LRB的联合作用。采用非线性时程分析方法,分析不同LRB支座布设位置对FPB-LRB隔震桥梁的影响,并与只布设FPB支座进行比较。研究结果表明:FPB-LRB隔震桥梁较FPB隔震桥梁具有较优的隔震性能,恰当的布设LRB支座位置,可以进一步提高FPB-LRB隔震桥梁减震率。
FPB support and LRB support are bearing more popularity at present, of which each has its unique advantages and disadvantages. With the aid of a combined 3 span prestressed concrete box girder bridge, the combined effects of FPB-LRB were discussed. The nonlinear process analysis method was used to analyze the influence of different LRB bearings layout position of FPB-LRB isolated bridges, and only laid FPB supports were compared. The results show that the FPB-LRB isolates bridges with FPB isolated bridges with better isolation performance, proper layout of LRB support position can further improve the FPB-LRB isolation of bridge damping ratio

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