铁道标准设计2016，Vol.60Issue(11)：70-76,7.DOI:10.13238/j.issn.1004-2954.2016.11.017
大跨度连续梁桥摩擦摆支座布置及参数研究
Study on Friction Pendulum Bearing Arrangement and Parameters for Long-span Continuous Girder Bridge
刘学强1
作者信息
- 1. 福州市规划设计研究院，福州 350108
- 折叠
摘要
Abstract
Taking a long-span continuous girder bridge with spans of (71+83+123. 5+240+123. 5+83+71) m as the research objective, this paper studies the influence of arrangement friction pendulum bearings arrangement and bearing mechanical parameters on the seismic response of the structure. The results show that the long-span continuous girder bridge with friction pendulum bearing can significantly reduce the stress of the original fixed piers with pier stress distribution more uniform, while reducing the displacement of pier top under the E2 earthquake;the friction pendulum bearing may be arranged only on the main pier of the main span;the changes of the friction coefficient of friction pendulum bearings pose great influence on seismic response of structure, so that the increase of friction coefficient results in bigger bearing energy consumption, but excessive friction fails to effectively block the transmission of inertia force between pier and girder, and give full play to the role of energy isolation bearings. Thus, we recommend 0. 02 to 0. 03 of friction coefficient. As the changes in radius of friction pendulum bearings have little effect on seismic response of structure, corresponding radius of curvature is employed according to the vertical bearing capacity.关键词
连续梁桥/摩擦摆支座/支座布置/参数研究/时程分析/地震响应Key words
Continuous girder bridge/Friction pendulum bearing/Bearing arrangement/Parameter study/Time history analysis/Seismic response分类
交通工程引用本文复制引用
刘学强..大跨度连续梁桥摩擦摆支座布置及参数研究[J].铁道标准设计,2016,60(11):70-76,7.
