土方开挖顺序对拉锚索支护结构变形的影响分析  

The Influence Analysis of Earthwork Excavation Sequence on the Deformation of Tension Anchor Cable Support Structures

作　　者：郑新秀 Zheng Xinxiu(Fujian Academy of Building Sciences Co.Ltd.,Fuzhou,Fujian 350108)

机构地区：[1]福建省建筑科学研究院有限责任公司,福建福州350108

出　　处：《江西建材》2023年第12期36-38,共3页Jiangxi Building Materials

摘　　要：文中针对某一采用对拉锚索的非对称深基坑工程,采用有限元HS-small本构模型进行数值模拟,并分析不同的土方开挖顺序对支护结构变形的影响。结果表明,通过数值模拟得到的支护结构桩身水平位移-深度曲线与实测值较接近,采取先浅后深的土方开挖顺序对支护结构的变形控制更有利,为同类型的基坑设计及施工提供参考。The tension anchor cable support structure is commonly used in adjacent foundation pits.This article focuses on an asymmetric deep foundation pit project using tension anchor cables.A finite element HS small constitutive model is used for numerical simulation,and deformation analysis is carried out for different excavation sequences.The results indicate that the horizontal displacement depth curve of the support structure pile obtained through numerical simulation is close to the measured value.Adopting a shallow to deep excavation sequence is more advantageous for controlling the deformation of the support structure,providing reference for the design and construction of similar foundation pits.

关 键 词：对拉锚索 数值模拟 开挖顺序 变形 

分 类 号：TU74[建筑科学—建筑技术科学]