管线基坑穿越地铁高架区间桥梁桩基影响研究  

Study on the influence of pile foundation of pipeline foundation pit crossing the subway elevated section

作　　者：李响 蒋丹 Li Xiang;Jiang Dan(Beijing Gonglian Highway Liaison Line Co.,Ltd.,Beijing 100071,China;Beijing Construction Engineering Quality Third Test Institute Co.,Ltd.,Beijing 100037,China)

机构地区：[1]北京市公联公路联络线有限责任公司,北京100071 [2]北京市建设工程质量第三检测所有限责任公司,北京100037

出　　处：《山西建筑》2023年第22期111-113,共3页Shanxi Architecture

摘　　要：高架桥桩基的变形、沉降对于高架桥的安全和稳定性都至关重要。以北京地铁S1线区间高架下穿泵站管线为背景,采用有限元软件建立了土体、地埋管线、高架桥结构一体的三维有限元模型,通过仿真分析管线基坑施工对桩基结构的危害,计算得到桩基变形量、变形位置并与规范标准对比,有益于后续类似工程的设计施工。The deformation and settlement of the pile foundation of the viaduct are crucial to the safety and stability of the viaduct.Taking the elevated underpass pump station pipeline of Beijing Metro Line S1 as the background,a three-dimensional finite element model integrating soil,buried pipeline and viaduct structure was established by finite element software,and the hazard of pipeline foundation pit construction on pile foundation structure was analyzed by simulation,and the deformation amount and deformation position of pile foundation were calculated and compared with the normative standards,which provided a reference for the design and construction of subsequent similar projects.

关 键 词：基坑开挖 高架桥 桩基变形 数值模拟 

分 类 号：TU753[建筑科学—建筑技术科学]