摘要
盾构法已成为我国城市地铁施工中一种重要的施工方法,由施工引起的地面沉降对其周围环境的影响是盾构隧道设计和施工中非常重要的问题。本文根据某地铁盾构隧道穿越桥桩工程,应用三维有限差分软件FLAC-3D进行了数值模拟,并对计算结果和实测结果进行了对比和分析,研究了隧道开挖中产生的位移对既有桥桩的影响,得出桩基变形的规律,并提出相应的工程建议。
The shield driving method has been one of the main construction methods in the metro engineering in our country. The surface settlements and the influence of shield tunneling on surrounding environment are problems closely related with the design and construction of shield tunnel. For a special engineering proiect, the effects of soil displacement induced by subway shield tunneling excavation on bridge pile foundation are studied using FLAC-3D. The results are compared with the measuring results. The deformation of the pile foundation is given. In addition, procedures and control methods for shield tunneling adjacent to pile foundations are proposed.
出处
《科技导报》
CAS
CSCD
2007年第19期53-56,共4页
Science & Technology Review
关键词
盾构隧道
地面沉降
桥桩
shield tunneling
ground surface settlement
bridge pile foundation
