基于地震响应分析下0.2g地区中小跨径规则桥梁取消桩顶系梁桥墩安全性分析  

The Safety Analysis Of The Non-Pile-Tie -Beam Pier Of Short And Medium -Span Regular Bridge Based On Seismic Response Analysis In 0.2g Area

作　　者：赵国华 Zhao Guohua(Gansu Province Transportat Planning,Survey&Design Institute Co.,Ltd.,Lanzhou,China)

机构地区：[1]甘肃省交通规划勘察设计院股份有限公司,甘肃兰州

出　　处：《科学技术创新》2023年第25期140-143,共4页Scientific and Technological Innovation

摘　　要：以陇南山区0.2g地区某高速公路为背景,分析在百年一遇洪水位及冲刷深度均较大桥位处,为减少桥下阻水,对处于沟道中双柱墩式桥墩,取消桩顶系梁后桥墩安全性问题。基于反应谱及Pushover分析,对沟谷型及河滩型两种典型桥梁按有无桩顶系梁两种工况进行分析。Based on a highway in 0.2g area of Longnan Mountain area,The safety problems of the rear pier after removing the pile top tie beam are analyzed in order to reduce the water resistance under the bridge to improve the durability of the bridge and improve the structural safety in the river channel where flood level and scour depth are larger once in a hundred years。Based on response spectrum and Pushover analysis,the two typical Bridges of gully type and river beach type are compared and analyzed respectively according to the two working conditions with or without pile top tie beam.

关 键 词：桩顶系梁 双柱式桥墩 延性构件 

分 类 号：U442[建筑科学—桥梁与隧道工程]