| 深圳土体蠕变特性在深基坑工程中的应用 |
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| 引用本文： | 王坤.深圳土体蠕变特性在深基坑工程中的应用[J].铁道工程学报,2011(8):53-57. |
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| 作者姓名： | 王坤 |
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| 作者单位： | 铁道第三勘察设计院集团有限公司,天津,300250 |
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| 摘 要： | 研究目的:为研究土体蠕变特性对深基坑围护结构稳定性的影响,本文基于深圳某车站深基坑工程,通过室内三轴蠕变试验,运用数值模拟方法拟合得出了土体蠕变引起的基坑开挖时间敏感性,以及对周边建筑物带来的不利影响。研究结论:通过对典型断面的数值模拟,重点阐述了深圳地区特定土体的蠕变特性,为本工程的安全施工、保护周边环境及预测长期变形提供了理论基础。蠕变前后支护结构变形增大近16%,临近建筑物基础沉降增大了近21%;得出的具有适用性的SSC模型计算参数,对本地区类似基坑工程具有较高的参考价值。
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| 关 键 词： | 粉质黏土 全风化花岗岩 三轴蠕变 参数拟合 数值分析 |
Application of Soil Creep Characteristics in Deep Foundation Pit Project in Shenzhen |
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| WANG Kun.Application of Soil Creep Characteristics in Deep Foundation Pit Project in Shenzhen[J].Journal of Railway Engineering Society,2011(8):53-57. |
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| Authors: | WANG Kun |
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| Institution: | WANG Kun(The Third Railway Survey and Design Institute Group Corporation,Tianjin 300251,China) |
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| Abstract: | Research purposes: Combined with the deep foundation pit project of one railway station in Shenzhen,by doing indoor triaxial creep test,the time sensitivity of the foundation pit excavation and the negative influence on the surrounding building caused by the soil creep were fitted with numerical simulation method for purpose of researching the influence of soil creep characteristics on the stability of the exterior-protected construction for the foundation pit. Research conclusions:Through numerical simulat... |
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| Keywords: | silty clay fully weathering granite triaxial creep parameters fitting numerical analysis |
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