The Chinese Journal of Nonferrous Metals
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|第13卷 第11期 总第80期 2016年11月|
(1.辽宁工程技术大学 土木与交通学院,辽宁 阜新 123000;2.贵州大学 土木工程学院,贵州 贵阳 550025;3.辽宁省国际工程咨询中心,辽宁 沈阳 110000)
摘 要: 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。
（1.School of Civil Engineering and Transportation of Liaoning Technical University, Fuxin 12300, China; 2.Civil Engineering College of Guizhou University,Guiyang 550025, China; 3. International Engcneering Consulting Center of Liaoning Prorinee, Shenyang 110000, China）
Abstract: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.
Key words: FPB bearing; LRB bearing; combined action; layout position; isolation rate