摘要
西平铁路田家窑2号大桥,是国内目前跨度最大的四线铁路T形刚构桥。该桥孔跨布置为2×108 m,桥长218.1 m,桥高68 m。本桥位于7度地震区,由唯一的桥墩承担结构的地震力。为减少地震力,通过有限元软件分析结构动力特性,最终采用"单墩多柱"桥墩,并在桥台设置减震阻尼的减震措施。理论分析、施工建造和验收过程表明,这些措施效果明显,能够满足规范要求。
Tianjiayao NO. 2 bridge of Xi ~ Ping railway is the longest four-track railway T-frame bridge in China with span arrangement of 2×108 m, 218. 1 m long and 68 m high. The bridge is located in grade 7 earthquake zone and the earthquake force on structure is only taken by piers. In order to reduce earthquake force, the dynamic characteristics of the structure are analyzed with finite element software and ＂single pier with multiple columns＂ is finalized with damping at abutment. Theoretical analysis, construction and acceptance processes demonstrate that these measures are effective to satisfy the requirements of standard.
出处
《铁道标准设计》
北大核心
2015年第11期56-59,共4页
Railway Standard Design
关键词
铁路桥梁
T形刚构
单墩多柱
减震措施
Railway bridge
Rigid T-frame
Single pier with multiple columns
Damping measures
