基于SMW工法改进支护型式的应用研究  

An Application Research of Modified Support System Based on SMW Construction Method

作　　者：李晓 申翃[1] 朱国甫[2] 雷美清[3] 余秀玲 LI Xiao;SHEN Hong;ZHU Guofu;LEI Meiqing;YU Xiuling(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;School of Science,Wuhan University of Technology,Wuhan 430070,China;Wuhan Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China)

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]武汉理工大学理学院,武汉430070 [3]中科院武汉岩土力学研究所,武汉430071

出　　处：《昆明理工大学学报（自然科学版）》2018年第5期118-122,共5页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金面上项目(11672215)

摘　　要：在大规模的深基坑工程中,结合场地情况及周边环境的特点,对基坑支护方法进行优化和创新.以武汉市东西湖区某深基坑工程为例,对传统SMW工法在搅拌体和型钢的布置及施工工艺上进行了改进创新,适当减小了搅拌体的长度和截面积,增大了型钢的间距.现场监测数据表明:桩体水平位移与基坑周边沉降总量均在允许范围内,计算值与实测数据基本吻合,在保障基坑安全的前提下有效地降低了施工成本、缩短了工期.改进支护型式的成功应用对相似工程有着积极的指导和借鉴意义.In large-scale deep f0undation pit engineering,optimization and innovation of excavation support system have been carried out combined with field condition and characteristic of surrounding environment. Some deep foundation pit at east-west lake district of Wuhan city was taken as an example in the paper,arrangement of mixing piles and profile steel and construction technology got improvement and innovation compared with traditional SMW by reducing the length and section area of the Soil-Cement Mixture and enlarging space of the profile steel properly. Field monitoring data shows that horizontal displacement of piles and settlement of surrounding roads are within the allowable range,and calculated values are in accordance with measured ones. Construction cost and period have been cut down on the premise of ensuring the safety of foundation pit. Successful application of the innovative support system will have a positive instruction and reference significance to those similar projects in the future.

关 键 词：深基坑 SMW工法 改进支护型式 水平位移 沉降 

分 类 号：TU560.45[建筑科学—建筑技术科学]