岩土工程学报Issue(z2)：146-153,8.DOI:10.11779/CJGE2014S2025
预应力锚杆柔性支护法力学行为影响的数值模拟研究
Numerical simulation of influence on mechanical behavior of flexible retaining method with prestressed anchor
摘要
Abstract
The flexible retaining method with prestressed anchor has obvious advantages of low cost, quick and convenient in construction and great safety performance for deep and ultra-deep foundation pits in rocky soils. Its economic and social benefits are significant. Numerical simulation analysis is conducted for the deep foundation pit of Dalian Victory Square using the FLAC software. The influence of different anchor prestress forces on the mechanical behavior of foundation pit is mainly studied. The results show that the greater the prestress, the smaller the horizontal deformation of the foundation wall and the vertical settlment of the ground for small prestress force. The increasing prestress force does not further reduce the horizontal deformation and the vertical settlement for greater prestress force. The prestressed anchors can effectively reduce the maximum shear strain increment in the rock body and delay the onset of shear sliding failure of the foundation pit to a certain extent. There is a reasonable threshold value of anchor prestress force for the foundation pit. The proposed design method and numerical simulation results may provide great guidance for the promotion and application of flexible retaining method with prestressed anchor.关键词
预应力锚杆/深基坑/数值模拟/力学行为Key words
prestressed anchor/deep foundation pit/numerical simulation/mechanical behavior分类
交通工程引用本文复制引用
涂兵雄,贾金青,俞缙,蔡燕燕,刘士雨..预应力锚杆柔性支护法力学行为影响的数值模拟研究[J].岩土工程学报,2014,(z2):146-153,8.基金项目
国家自然科学基金项目（51408242，51308234）；福建省自然科学基金项目（2013J05079）；重庆交通大学国家内河航道整治工程技术研究中心暨水利水运工程教育部重点实验室开放基金资助项目 （）
