浅析土钉墙支护的空间效应及变形特征
摘要:土钉墙支护体系是北京地区最常用的基坑支护形式之一，其变形具有明显的空间效应，而通常设计中均采用一个剖面应用于基坑各部位，相对于阳角和阴角位置较为不安全和保守。针对北京某基坑进行三维数值模拟分析，研究了土钉墙支护体系变形的空间效应，认为土钉墙最大水平位移发生在基坑阳角及其周围部位，为最危险位置，基坑阴角部位水平位移显著小于其他部位，阴角效应影响范围很小，可不考虑其对基坑整体变形的影响。
Abstract:Retaining structure with soil nailing walls which has a deformation of obvious spatial effect is the most commonly used form of foundation pit retaining structure in the Beijing area. This retaining structure usually uses the method of design that one section is applied to every part of the foundation pit; therefore, it is more unsafe and conservative relative to external corner and internal corner position. In this paper we made an analysis result with three-dimensional numerical simulation on a foundation pit in Beijing in order to study the spatial effect of deformation of the retaining structure with soil nailing walls. Through this we draw a conclusion that the maximum horizontal displacement took place in external corner of the foundation pit and around was the most unsafe position while the horizontal position of internal corner of the foundation pit turned to be significantly smaller than other parts but had little area of effect thus we could hardly consider its effects on overall deformation of the foundation pit.
中文标题：
浅析土钉墙支护的空间效应及变形特征
Analysis of Spatial Effect and Deformation of Soil Nailing Walls
作者：
张丹,法立滕,王健
Zhang Dan,Fa Liteng,Wang Jian
作者简介:张丹,1983年生,女,河南商丘人,工程师,主要从事岩土工程设计及施工工作。E-mail:zhdan1983@sina.com
通讯地址：
中兵勘察设计研究院, 北京 100053
ChinaOrdnanceIndustrySurvey&GeotechnicalInstitute,Beijing100053,China
中图分类号:TU551.4;TU942
doi:10.3969/j.issn.1007-2993.2014.02.013
出版物：岩土工程技术
收稿日期:2013-01-07
网络出版日期:2021-07-19
关键词:土钉墙,空间特征,变形,数值模拟
Key words:soil nailing walls,spatial effect,deformation,numerical simulation
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