围护桩嵌固深度对“桩墙合一”结构稳定性的影响分析  

作　　者：王庆双 

机构地区：[1]中铁二十五局集团第五工程有限公司,山东青岛266000

出　　处：《科技创新与应用》2024年第27期65-69,共5页Technology Innovation and Application

摘　　要：为更全面地了解围护桩嵌固深度对“桩墙合一”基坑结构体系受力变形特性的变化规律,运用FLAC3D软件,探讨基坑土体位移、桩身侧向位移和弯矩以及地下室外墙侧向位移和弯矩在不同围护桩嵌固深度影响因素下的变化规律。数值模拟结果表明围护桩嵌固深度的增大,可以有效控制土体水平位移,进而增强结构的稳定性,但超出这一范围,桩身内力将会增大;在一定范围内增大围护桩的嵌固深度,能够改善桩身的变形与受力形态,且随着围护桩嵌固深度的增大,土体位移逐渐减小。In order to more comprehensively understand the variation law of the retaining pile embedded depth on the stress and deformation characteristics of the"pile-wall in one"foundation pit structure system,the FLAC3D software is used to discuss the soil displacement,pile lateral displacement and bending moment of the foundation pit,as well as the lateral displacement and bending moment of the basement outer wall under the influence factors of different retaining pile embedded depth.The numerical simulation results show that the increase of the embedded depth of the retaining pile can effectively control the horizontal displacement of the soil and enhance the stability of the structure,but beyond this range,the internal force of the pile will increase;increasing the embedded depth of the retaining pile in a certain range can improve the deformation and stress shape of the pile,and with the increase of the embedded depth of the retaining pile,the soil displacement decreases gradually.

关 键 词：围护桩嵌固深度 桩墙合一 受力特性 变形特性 影响规律 

分 类 号：TU473.2[建筑科学—结构工程]