| 水泥搅拌桩和土钉联合支护的软土基坑变形分析 |
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| 引用本文： | 许岩剑,钟德明,肖仁成.水泥搅拌桩和土钉联合支护的软土基坑变形分析[J].中国市政工程,2012(1):71-73,87. |
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| 作者姓名： | 许岩剑 钟德明 肖仁成 |
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| 作者单位： | 南华大学城市建设学院,湖南衡阳,421001 |
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| 摘 要： | 漳州市某基坑工程采用水泥搅拌桩和土钉墙联合支护方式。通过建立基坑体系的二维有限元弹塑性模型,对采用水泥搅拌桩和土钉联合支护基坑的变形特征进行数值分析。分析计算结果与工程实际情况表明:水泥搅拌桩和土钉联合支护时(水泥搅拌桩具一定厚度),滑动面形状不再呈圆弧形,土钉水平投影段范围内滑弧呈水平向拉长,致使基坑变形影响范围增大。基坑最大沉降发生在土钉水平投影段外侧圆弧内。
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| 关 键 词： | 基坑工程 水泥搅拌桩 土钉 联合支护 变形分析 |
On Soft Soil Foundation Pit Deformation Supported by Combined Method of Cement Mixing Piles & Soil Nails |
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| XU Yan-jian,ZHONG De-ming,XIAO Ren-cheng.On Soft Soil Foundation Pit Deformation Supported by Combined Method of Cement Mixing Piles & Soil Nails[J].China Municipal Engineering,2012(1):71-73,87. |
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| Authors: | XU Yan-jian ZHONG De-ming XIAO Ren-cheng |
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| Affiliation: | (School of Urban Construction,University of South China,Hengyang 421001,China) |
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| Abstract: | Taking some foundation pit project in Zhangzhou for example,the combined supporting method of cement mixing piles and soil nails is adopted.And the deformation characteristics of the foundation pit by means of combined supporting are made numerical analysis.The calculation results and project practical situation can show that,1) when application of cement mixing piles and soil nails in support of soft soil excavation(cement mixing piles have a certain thickness),slip surface never presents circular arc;2) critical stretching circular arc presents in the horizontal section range with soil nails and the influence scope of pit deformation is expanded;3) the maximum settlement of foundation pits is developed outside the circular arc range with soil nails. |
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| Keywords: | foundation pit engineering cement mixing piles soil nails combined supporting deformation analysis |
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