摘要
天津地铁七号线外院附中站~榆关道站区间采用盾构法施工,而且不可避免的要侧穿京沪高铁桥桩,为研究盾构施工对高铁桩基的影响,需采用三维数值分析的方法,建立三维有限元模型,真实模拟盾构隧道、桥桩的位置关系,分析盾构施工对桩基受力和变形的影响;同时分析增加隔断桩措施后桩基受力变形的变化,并提出了相应的盾构施工辅助措施,为今后类似工程的开展提供了一定的借鉴质意义。
The tunnel between Affiliated middle school of foreign language college Station and Yuguan Station of Tianjin metro line 7 is a shield tunnel,it is inevitable to passing through side of the bridge pier of Beijing-Shanghai high-speed railway. In order to study the influence of shield tunnel construction on the pile foundation of high speed railway,the 3D numerical analysis method should be used,and establish 3D finite element model,the position relation of shield tunnel and bridge pier is simulated. The influence of shield construction on the stress and deformation of pile foundation is analyzed,the change of the stress and deformation of pile foundation is also analyzed when separate pile has been increased. It proposes the corresponding auxiliary measures of shield construction,and also provides some reference for the future development of similar projects.
出处
《施工技术》
CAS
北大核心
2017年第S1期770-772,共3页
Construction Technology
关键词
数值分析
盾构施工
侧穿高铁
隔断桩
施工辅助措施
simulation
shield tunnel construction
passing through side of the high-speed railway
separate pile
auxiliary measures of construction
