| 自钻式旁压仪测定黏性土原位水平应力和K_0值 |
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| 引用本文： | 辛蕊,赵瑞斌,杨爱武,卢力强,陈凤飞.自钻式旁压仪测定黏性土原位水平应力和K_0值[J].中国港湾建设,2011(1):32-35. |
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| 作者姓名： | 辛蕊 赵瑞斌 杨爱武 卢力强 陈凤飞 |
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| 作者单位： | 1. 天津城市建设学院土木工程系,天津市软土特性与工程环境重点实验室,天津,300384;河北省建筑科学研究院天津分院,天津,300384
2. 天津城市建设学院土木工程系,天津市软土特性与工程环境重点实验室,天津,300384 |
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| 基金项目： | 天津市科技创新专项资金项目(07FDZDSF02101-04);天津市科技发展计划科技攻关项目(06YESZSF04000) |
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| 摘 要： | 根据剑桥自钻式旁压仪的工作原理,分别按确定原位水平应力的观察法、迭代法、拟合法对天津市滨海新区黏性土的旁压曲线进行分析,并剖析算得的初始压力P0的物理意义,提出以观察法为基础的相关公式,用以确定原位水平应力。将试验数据按相关公式、迭代法、拟合法得到的P0计算K0,并与经验公式进行对比,认为K0值与土性和分析方法的基本假设有关。分析结果表明,用观察法的相关公式确定原位水平应力及K0值是一种适用于工程实践的有效方法。
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| 关 键 词： | 自钻式旁压试验 原位水平应力 静止侧压力系数 黏性土 |
Initial Horizontal Stress and K0 Using Self-boring Pressuremeter |
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| XIN Rui,ZHAO Rui-bin,YANG Ai-wu,LU Li-giang,CHEN Feng-fei.Initial Horizontal Stress and K0 Using Self-boring Pressuremeter[J].China Harbour Engineering,2011(1):32-35. |
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| Authors: | XIN Rui ZHAO Rui-bin YANG Ai-wu LU Li-giang CHEN Feng-fei |
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| Institution: | XIN Rui1,2,ZHAO Rui-bin1,YANG Ai-wu1,LU Li-qiang1,CHEN Feng-fei1(1.Department of Civil Engineering,Tianjin Institute of Urban Construction,Tianjin Key Lab of Soft Soil Characteristic and Engineering Environment,Tianjin 300384,China,2.Hebei Academy of Building Research Tianjin Branch,China) |
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| Abstract: | According to the working principle of Cambridge self-boring pressuremeter,analyze the pressuremeter curve of Tianjin Binhai New Area by observation,iterative and fitting method.Discuss the physical meaning of P0,which determined by these methods,and put forward a interaction formula of observation method to determine in-situ horizontal stress.Using P0,which was obtained by correlation formula,iterative and fitting method from test data,K0 was calculated.Compared these data,it is consider that K0 related to ... |
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| Keywords: | self-boring pressuremeter in-situ horizontal stress lateral earth pressure coefficient at rest clay |
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