Influence of rigid central buckle on seismic response of long-span suspension bridges  

作　　者：王浩 Li Aiqun Jiao Changke Zou Keguan 

机构地区：[1]Key I.lboratory of Concrete ＆ Prestressed Concrete Structure of Education Ministry, Southeast University, Nanjing 210096, P. R. China

出　　处：《High Technology Letters》2011年第2期214-219,共6页高技术通讯（英文版）

摘　　要：A rigid central buckle is employed in Runyang Suspension Bridge （RSB） to replace commonly used short suspenders in the main span. Based on the seismic waves with 2% probabilities of exceedance, the nonlinear seismic response time-domain analysis are then conducted and influence of central buckles on seismic response of long-span suspension bridge is specially studied. Analysis resuits show that the central buckle can effectively control the longitudinal floating vibration mode of the deck, and therefore reduce earthquake-excited longitudinal displacement at the end of the deck. However, the central buckle may cause increment of longitudinal displacement at the top of main tower and bending moment at the bottom of the main tower, which should be paid special attention to. Results provide references for anti-earthquake analysis and design of long-span suspension bridges using rigid central buckles.

关 键 词：suspension bridge central buckle seismic response time-history analysis ANSYS 

分 类 号：U448.25[建筑科学—桥梁与隧道工程] TU352.1[交通运输工程—道路与铁道工程]