| 张熙德,关群,李凡.基于正交试验的深基坑变形影响因素研究[J].安徽建筑大学学报,2018,26(1):22-27 |
| 基于正交试验的深基坑变形影响因素研究 |
| Research on the Influence Factors of Deep Foundation Pit Based on Orthogonal Experiment |
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| DOI：10.11921/j.issn.2095-8382.20180105 |
| 中文关键词: 深基坑 正交试验 极差分析 地表沉降 地连墙水平位移 |
| 英文关键词: deep foundation pit orthogonal experiment range analysis settlement of ground surface horizontal displacement of the underground continuous walls |
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| 摘要点击次数: 6501 |
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| 中文摘要: |
| 运用正交试验原理，以深基坑土体的摩擦角、弹性模量、黏聚力、地连墙刚度、支撑刚度为影响因素，设定周边土体最大沉降、地下连续墙最大水平位移作为分析基坑开挖后变形的两个指标，对合肥地区逆作法深基坑稳定特征用数值模拟进行了分析。采用极差分析法揭示了各因素在深基坑开挖过程中的重要次序。结果表明在施工方式保持不变的情况下，地表沉降、地连墙水平位移的最显著影响因素均为土体的弹性模量，地表沉降的其他影响因素依次为地连墙刚度、土体黏聚力、支撑刚度、土体内摩擦角。 地连墙水平位移的其他影响因素依次为地连墙刚度、支撑刚度、土体内摩擦角、土体黏聚力。 |
| 英文摘要: |
| Using the principle of orthogonal test,considering soil friction angle,soil modulus,soil cohesion,the rigidity of underground continuous walls and the rigidity of support as factors,the maximum settlement of ground surface and the maximum horizontal displacement of underground continuous walls were treated as indicators,numerical simulation were used to analyze the stability of the Hefei top-down method foundation pit. Besides,the order of importance of various factors in the process of deep foundation pit excavation were analyzed by the method of extreme difference analysis.The results show that:with the same construction method,it is the soil modulus that has a marked impact on all indicators.Other factors of the surface subsidence in order of importance are the rigidity of the underground continuous walls,soil cohesion,the rigidity of the support,soil friction angle.However,other factors of the horizontal displacement of underground continuous walls in order of importance are the rigidity of the underground continuous walls, the rigidity of the support,soil friction angle,soil cohesion. |
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