预应力锚拉桩支护下的深基坑变形分析  

Study on Deformation Laws of Deep Excavation Supported by Reinforced Anchorage Pile

作　　者：李子运[1,2] 刘博明[1] 

机构地区：[1]重庆科技学院基建规划处,重庆401331 [2]重庆科技学院建筑工程学院,重庆401331

出　　处：《重庆科技学院学报（自然科学版）》2015年第2期95-98,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：重庆市基础与前沿研究计划(CSTC2013JCYJA90004)

摘　　要：针对软土地区深基坑工程易产生垮塌变形的特点,采用FLAC 3D有限差分软件对预应力锚拉桩支护下的深基坑工程进行模拟。通过对预应力锚拉桩的受力情况分析,找到基坑中易出现应力集中的区域,对其采取有针对性的支护加强措施,以减少基坑变形,增加基坑稳定性。模拟结果表明,在预应力锚拉桩支护下的软土地区深基坑变形受到有效控制,支护方案安全可靠。Based on the operating principle of reinforced anchorage pile and the easily collapsing character of deep excavation in soft clay,three-dimensional finite-difference software FLAC 3D was adopted for the simulation of deep excavation supported by reinforced anchorage pile. By locating the stress concentration area in the way of stress analyzing of reinforced anchorage pile,specific supporting means are adopted so the deformation of foundation pit could be reduced while its stability gets enhanced. The result shows that the deformation of deep excavation has got effective control under the support of reinforced anchorage piles; the support scheme is safe and reliable.

关 键 词：预应力锚拉桩 咬合桩 预应力锚索 深基坑 

分 类 号：TU470[建筑科学—结构工程]