摘要
为了研究摩擦摆支座栓钉抗力和支座阻尼对桥梁结构地震响应的影响,以韩江特大桥主桥为研究对象,应用ANSYS建立全桥模型,采用非线性时程分析法对比分析了不同支座参数下该主桥的地震响应。研究结果表明:摩擦摆支座栓钉抗力系数较合理的取值范围为0.04~0.05,在实际应用中还应考虑栓钉抗力对正常荷载作用下桥梁结构变形等的影响;考虑支座阻尼后各桥墩的支座纵桥向最大水平位移均有一定程度减小,还会减小除11~#桥墩外其余桥墩支座纵桥向最大水平剪力;考虑支座阻尼后会增加9~#,11~#,13~#,15~#桥墩墩底纵桥向最大弯矩,而10~#,12~#,14~#桥墩墩底纵桥向最大弯矩有所减小。
In order to study the effect of stud resistance and bearing damping of friction pendulum bearing on seismic response of the bridge structure, the Han River super large bridge was selected as the research object. The whole bridge model was established by finite element software ANSYS, and seismic response of the main bridge under different bearing parameters was analyzed and compared on the basis of the nonlinear time-history analysis method. The results show that the reasonable range of stud resistance coefficient of friction pendulum bearing is 0.04 - 0.05 ,but the influence of stud resistance on bridge structure deformation should be also considered under normal load in practical application. The maximum horizontal displacement of each bridge pier is reduced to certain extent after considering the bearing damping. The maximum horizontal shear force of bridge piers is decreased except 11^# pier. The maximum longitudinal bending moment at 9^#, 13^#, 11^#and 15^# pier bottom will be increased considering bearing damping,but the maximum longitudinal bending moment at 10^# ,12^# and 14^# pier bottom will be reduced.
作者
廖平
赵人达
贾毅
徐腾飞
黄俊翔
李雅香
LIAO Ping ZHAO Renda JIA Yi XU Tengfei HUANGJunxiang LI Yaxiang(School of Civil Engineering, Southwest Jiaotong University, Chengdu Sichuan 610031, China Chaozhang Expressway Management Center of Nanyue Communication in Guangdong Province, Guangzhou Guangdong 510101, China)
出处
《铁道建筑》
北大核心
2017年第3期33-35,共3页
Railway Engineering
基金
广东省交通厅科技计划(科技2014-02-015)
关键词
公路
桥梁
摩擦摆支座
非线性时程分析法
栓钉抗力
支座阻尼
地震响应
Highway
Bridge
Friction pendulum bearing
Nonlinear time-history analysis method
Stud resistance
Bearing damping
Seismic response
