土工基础

›› 2016, Vol. 30 ›› Issue (5): 548-550.

• 工程实录 • 上一篇    下一篇

PLAXIS有限元数值模拟在高铁桥梁深基坑施工中的应用

胡志旭   

  1. （中铁四局集团第四工程有限公司，合肥 230041）
  • 收稿日期:2016-06-30 修回日期:2016-07-11 出版日期:2016-10-20 发布日期:2016-10-31
  • 作者简介:胡志旭（1982-），男，工程师，研究方向为桥梁施工技术研究。

Application of PLAXIS Finite Element Method in Deep Excavation for Bridge Foundations

HU Zhixu   

  1. (The Fourth Engineering Co. Ltd. of CTCE Group, Hefei, 230041)
  • Received:2016-06-30 Revised:2016-07-11 Online:2016-10-20 Published:2016-10-31

摘要： 以连镇苏北灌溉总渠特大桥深基坑为研究对象，基于Plaxis有限元软件对深基坑开挖、支护施工的8种工况进行了数值模拟，分析了拉森钢板桩、支撑等受力特性及周边地层沉降，为深基坑施工方案的制定提供了参考。

关键词: 拉森钢板桩, 有限元, 深基坑施工, 弹塑性

Abstract: The deep excavation construction for the high speed rail bridge foundations is getting more and more popularity and the research on the construction technique is therefore more and more important. This paper presents a large deep excavation for the Subei Irrigation Canal Bridge in Lianzhen. The numerical analyses were performed on the excavation and supporting process of the deep excavation with commercial software PLAXIS. The stress in the Larsen sheet piles and struts as well as the ground subsidence of the adjacent soils were analyzed under eight different construction conditions.

Key words: Larson Sheet Piles, Finite Element Method, Deep Excavation Construction, ElastoPlastic Analysis