临近建筑物SMW工法基坑围护结构受力特性研究

doi:10.3969/j.issn.1674-0696.2018.03.09

重庆交通大学学报（自然科学版） ›› 2018, Vol. 37 ›› Issue (03): 44-50.DOI: 10.3969/j.issn.1674-0696.2018.03.09

临近建筑物SMW工法基坑围护结构受力特性研究

解廷伟1, 2，左殿军3, 4，王绪锋5，安晓宇3

(1.深圳市地铁集团有限公司，广东深圳 518026；2.北京交通大学土木建筑工程学院，北京 100044； 3.交通运输部天津水运工程科学研究所，天津 300456；4.河海大学岩土工程研究所，江苏南京 210098； 5. 浙江省水利河口研究院，浙江杭州 310020)

收稿日期:2016-09-01 修回日期:2016-12-11 出版日期:2018-03-20 发布日期:2018-03-26
作者简介:解廷伟(1979—)，男，山东聊城人，博士研究生，工程师，主要从事地铁隧道工程方面的研究。E-mail:xietingwei81@126.com。

Mechanical Characteristics of Foundation Pit Retaining Structure of Adjacent Buildings with SMW Method

XIE Tingwei1, 2, ZUO Dianjun3, 4, WANG Xufeng5, AN Xiaoyu3

(1.Shenzhen Metro Group Co., Ltd., Shenzhen 518026, Guangdong, P. R. China; 2.School of Civil and Architecture Engineering, Beijing Jiaotong University, Beijing 100044, P. R. China; 3.Tianjin Research Institute for Water Transportation Engineering, M.O.T., Tianjin 300456, P. R. China; 4.Geotechnical Research Institute, Hohai University, Nanjing 210098, Jiangsu, P. R. China; 5.Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, Zhejiang, P. R. China)

Received:2016-09-01 Revised:2016-12-11 Online:2018-03-20 Published:2018-03-26

摘要/Abstract

摘要： 根据天津滨海新区欧风国际商业步行街临近建筑物地下室基坑开挖工程，采用ABAQUS有限元软件研究了SMW工法基坑围护结构的受力特性，讨论了型钢与水泥相互作用对SMW工法桩受力特性的影响。结果表明：SMW工法桩顶水平位移值4.53 mm，说明临近建筑物对SMW工法基坑围护结构影响较小；考虑水泥土刚度贡献，SMW工法桩水平位移值、剪力值、弯矩值均比现行规范理论计算值小25%~35%；型钢与水泥土相互作用对桩的受力与变形影响较大，随着型钢与水泥土相互作用减小，水泥土对型钢的黏结强度的变小，型钢的受力与变形均变大。

关键词: 岩土工程, SMW工法, 基坑围护结构, 型钢-水泥土相互作用, 数值模拟

Abstract: Based on the excavation of basement close to the Europe-International Business Pedestrian Mall located in Binhai newly developed area in Tianjin, the bearing performance of excavation retaining structure reinforced by SMW method was investigated by the finite element software ABAQUS. Meanwhile, the effect of the interaction between section steel and cement on the pile constructed by SMW method was discussed. The results show that the horizontal displacement of the top of the pile constructed by SMW method is about 4.53mm, indicating that the influence of the adjacent building on the excavation retaining structure conducted by SMW method is small; the horizontal displacement value, shear value, and moment value of the pile constructed by SMW method are less about 25%~35% than those calculated by the existing codes after considering the stiffness of cement; the impact of the interaction between section steel and cement soil on the stress and strain of pile is large; with the decrease of the interaction between the section steel and the cement soil, the bond strength of the cement soil to the section steel becomes smaller, and the stress and deformation of the section steel become larger.

Key words: geotechnical engineering, soil mixed wall (SMW) method, foundation pit retaining structure, section steel and cement soil interaction, numerical simulation

中图分类号:

O319.56

解廷伟1, 2，左殿军3, 4，王绪锋5，安晓宇3. 临近建筑物SMW工法基坑围护结构受力特性研究[J]. 重庆交通大学学报（自然科学版）, 2018, 37(03): 44-50.

XIE Tingwei1, 2, ZUO Dianjun3, 4, WANG Xufeng5, AN Xiaoyu3. Mechanical Characteristics of Foundation Pit Retaining Structure of Adjacent Buildings with SMW Method[J]. Journal of Chongqing Jiaotong University(Natural Science), 2018, 37(03): 44-50.

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临近建筑物SMW工法基坑围护结构受力特性研究

Mechanical Characteristics of Foundation Pit Retaining Structure of Adjacent Buildings with SMW Method

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