铁道科学与工程学报2012，Vol.9Issue(3)：117-123,7.
双曲面球型减隔震支座在刚构连续梁桥中的应用
Application of double spherical seismic isolation bearing in a rigid frame-continuous girder bridge
刘俊 1王合希1
作者信息
- 1. 中铁第五勘察设计院集团有限公司桥梁设计院,北京102600
- 折叠
摘要
Abstract
Taking a (48 +4x80 +48)m rigid frame - continuous girder bridge in a high intensity earthquake area as an example, the long multi - span rigid frame - continuous girder bridge under conventional seimic design can not meet with the seismic fortification criterion. Application of the double spherical seismic isolation bearing can effectively reduce the internal force of the controlling section so as to meet the requirements of code for seismic design. The effect of the two major factors, which are friction coefficient and center distance of the two spherical surface,on the result of the bearing was also analyzed. According to the analysis, at the same center distance of the two spherical surface, the longitudinal bending moment at the bottom of the rigid frame pier and the longitudinal displacement at the top of the rigid frame pier were reduced with the increase of friction coefficient, and the transverse bending moment at the bottom of the rigid frame pier and the transverse displacement at the top of the rigid frame pier were increased with the increase of friction coefficient; At the same friction coefficient, with the increase of center distance of the two spherical surface, the longitudinal and transverse bending moment at the bottom of the rigid frame pier and the transverse displacement at the top of the rigid frame pier were decreased, and the longitudinal displacement at the top of the rigid frame pier experienced a decrease at first showed an and increase trend afterwards.关键词
刚构连续梁桥/双曲面球型减隔震支座/减震设计/摩擦因数Key words
rigid frame - comtinuous girder bridge/ double spherical seismic isolation bearing/ seismic design/ friction coefficient分类
交通工程引用本文复制引用
刘俊,王合希..双曲面球型减隔震支座在刚构连续梁桥中的应用[J].铁道科学与工程学报,2012,9(3):117-123,7.
