地连墙槽壁加固稳定性计算方法研究

发布时间：2018-04-22 15:15

本文选题：地连墙 + 槽壁　；参考：《岩土力学》2017年S1期

【摘要】：地连墙槽壁(以下简称"槽壁")稳定问题是地连墙施工质量和施工安全最关键的问题,由于护壁措施不当引起槽壁坍塌事故时有发生。首先,分析了槽壁失稳机制及形态,总结了各种槽壁抗失稳加固措施的优缺点,提出了深层搅拌桩(以下简称"搅拌桩")合理加固深度建议值和合理加固宽度的确定原则。其次,归纳总结了槽壁在泥浆护壁条件下各种稳定性安全系数计算方法的适用条件,探讨了各个安全系数取值的合理性,给出了建议值。最后,提出了搅拌桩加固槽壁条件下槽壁稳定性安全系数计算方法和判定标准。经多项工程实践,文中所提出的搅拌桩加固槽壁条件下槽壁稳定性安全系数计算方法和判定标准的可靠性以及加固宽度和深度的合理性得到了验证。
[Abstract]:The stability of the groove wall is the most critical problem in the construction quality and construction safety of the ground connecting wall. The caving accident of the groove wall caused by improper wall protection measures occurs from time to time. Firstly, the mechanism and form of slot wall instability are analyzed, and the advantages and disadvantages of various anti-instability reinforcement measures are summarized, and the principles of determining the reasonable reinforcement depth and width of deep mixing pile (hereinafter referred to as "mixing pile") are put forward. Secondly, the applicable conditions of various calculation methods for the stability safety factor of the groove wall under the condition of mud wall protection are summarized, the rationality of each safety factor value is discussed, and the suggested value is given. Finally, the calculation method and criterion of stability safety factor of tank wall strengthened by mixing pile are put forward. Through many engineering practices, the reliability of the calculation method of the stability safety factor of the groove wall and the reliability of the judging standard, as well as the reasonableness of the width and depth of the reinforcement, have been verified under the condition of strengthening the groove wall with the mixing pile.
【作者单位】：深圳市地质局;
【基金】：广东省深圳市地质局地质工程院士工作站专项经费资助项目(No.2013B090400025)~~
【分类号】：TU753

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