地震动作用下桩基础稳定性研究  

Research on the Seismic Stability of Pile Foundations under Seismic Loading

作　　者：周国友 文培弟 谢威 Zhou Guo-you;Wen Pei-di;Xie Wei(Hubei Transportation Investment Yanji Yangtze River Bridge Co.,Ltd.,Huanggang 438000,Hubei Province,China;Hubei Provincial Highway Industry Development Co.,Ltd.,Huanggang 438000,Hubei Province,China)

机构地区：[1]湖北交投燕矶长江大桥有限公司,湖北黄冈438000 [2]湖北省高速公路实业开发有限公司,湖北黄冈438000

出　　处：《建筑与装饰》2025年第7期133-135,共3页Construction & Decoration

摘　　要：鄂黄第二过江通道(燕矶长江大桥及接线)工程主桥为主跨1860m不同垂跨比四主缆钢桁梁悬索桥,为目前已建在建的双层桥梁跨度世界第一。由于燕矶长江大桥南主墩位于襄樊-广济断裂带内,而襄广断裂由多组相互的平行逆冲断层和挤压破碎带构成,岩性复杂,不同岩性物理力学特性差异显著,南主墩桩基需要穿越第四系土层、灰岩、构造角砾岩、糜棱岩、硅质泥岩等地层,在桥梁荷载作用下的受力变形特征也有差异。基于此,本文对大桥南主墩基础进行抗震稳定性分析,以期为相类似项目提供些许参考。The main bridge of the E-Huang Second Cross-River Channel(Yanji Yangtze River Bridge and Approach)is a double-deck suspension bridge with a main span of 1860 meters,featuring four main cables and a steel truss girder.It holds the world record for the largest span of a double-deck bridge.The southern main pier of the Yanji Yangtze River Bridge is located within the Xiangfan-Guangji fault zone,which is characterized by complex rock properties and significant differences in the physical and mechanical properties of various rock types.The pier’s pile foundation must penetrate through Quaternary soil layers,limestone,tectonic breccia,mylonite,and siliceous shale.These geological conditions result in distinct deformation characteristics under bridge loading.Given these complexities,this paper conducts a seismic stability analysis of the southern main pier foundation to provide references for similar projects.

关 键 词：抗震稳定性 糜棱岩 地震波 地震荷载 

分 类 号：TU473.1[建筑科学—结构工程] TU473[建筑科学—土工工程]