W形折线咬合桩咬合角度对支护结构承载特性的影响研究  

Research on the Influence of the Interlocking Angle of W-shaped Broken-line Interlocking Pile on the Bearing Characteristics of Supporting Structure

作　　者：严伟飞 赵爽[2,3] 郭舒帆 吴君涛 邱欣晨 YAN Weifei;ZHAO Shuang;GUO Shufan;WU Juntao;QIU Xinchen(Zhejiang Infrastructure Construction Group Co.,Ltd.,Hangzhou,Zhejiang 310012,China;Research Center of Coastal and Urban Geotechnical Engineering,Zhejiang University,Hangzhou,Zhejiang 310058,China;Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education,Zhejiang University,Hangzhou,Zhejiang 310058,China)

机构地区：[1]浙江省建投交通基础建设集团有限公司,浙江杭州310012 [2]浙江大学滨海和城市岩土工程研究中心,浙江杭州310058 [3]浙江大学软弱土与环境土工教育部重点实验室,浙江杭州310058

出　　处：《施工技术（中英文）》2021年第20期90-94,共5页Construction Technology

基　　金：国家自然科学基金(51779217,52178358);中国博士后科学基金(2020M681857);中央高校基本科研业务费专项资金资助项目(2020QNA4027)。

摘　　要：以杭州市某城际铁路标段为研究对象,针对传统咬合桩支护结构存在的不足,对W形折线咬合桩支护结构展开研究。通过有限元分析软件ABAQUS建立相同咬合量(面积)、不同咬合角度的W形折线咬合桩支护结构数值模型,并根据计算结果对不同开挖阶段支护结构的变形、内力、中性轴等承载特性进行分析。研究结果可为W形折线咬合桩支护结构的进一步现场推广与优化设计提供理论支持。Taking a bid section of an intercity railway in Hangzhou as the research background, in view of the shortcomings of the traditional interlocking pile supporting structure, the W-shaped broken-line interlocking pile supporting structure is studied. Through the finite element analysis software ABAQUS, the numerical model of W-shaped broken-line interlocking pile supporting structure with the same interlocking amount(area) and different interlocking angle is established, and the deformation, internal force, neutral axis and other bearing characteristics of the supporting structure in different excavation stages are analyzed according to the calculation results. The research results can provide theoretical support for the further field popularization and optimal design of W-shaped broken-line occluded pile supporting structure.

关 键 词：基坑 支护 咬合桩 咬合角度 承载力 有限元分析 

分 类 号：TU473[建筑科学—结构工程]