Results 21 to 30 of about 726 (137)
振动荷载对厦门地区红黏土抗剪强度影响的试验与分析 [PDF]
, 2007 以厦门某建筑工地红黏土为试样,进行振动荷载作用前、后三轴剪切对比试验。通过对试验数据的分析,对振动荷载对试样的黏聚力、内摩擦角、抗剪强度方程、抵抗侧向变形能力等的影响特性进行研究。研究结果显示,在其他试验条件相同的情况下,经振动荷载作用后的红黏土试样黏聚力降低51.72%,内摩擦角减少50%,抗剪强度线向下显著偏移,表明振动荷载不利于红黏土的稳定和承载 ...
俞登荣, 胡华, 顾恒星
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First sliding area analysis of expansive soil slope based on the upper and lower bound solutions [PDF]
Expansive soil landslides are prone to frequent disasters due to the expansion, cracking, and over-consolidation characteristics of expansive soil. However, traditional analysis methods cannot adequately reflect the progressive failure characteristic of ...
Jiong LIANG +3 more
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Cosserat-particle finite element method for large deformation analysis of rock and soil [PDF]
, 2023 The particle finite element method (PFEM) inherits the solid mathematical foundation of the finite element method and possesses the capability of modeling the problems with large deformation and complex boundary, so it has been widely used in the fields ...
Cui, J +4 more
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Integrated assessment of soil cutting slope stability using fuzzy mathematics and numerical simulation [PDF]
, 2023 The complexity and uncertainty of the factors affecting the stability of artificial slope in loess regions pose challenges for achieving objective and accurate assessments through a single method. To investigate the stability of the artificial soil slope
Chongjing WANG, Guowei LIU, Long ZHANG
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Approximate solution of plastic zone in surrounding rock under three-dimensional stress field based on Drucker-Prager strength criterion [PDF]
This study proposes to address the stability of roadway surrounding rock under three-dimensional stress field based on the Drucker-Prager criterion and the theory of elastic-plastic mechanics.
HAN Zijun +4 more
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, 2012 以柿竹园多金属矿为工程背景,研究确定该矿垂悬部分岩体的岩体力学参数.在工程现场进行实地的节理裂隙调查,对调查结果进行统计分析,利用科学和工业研究委员会(CSIR)地质评价体系对岩体进行质量分级;系统研究了各种岩体抗拉强度、抗压强度、变形模量、粘聚力以及内摩擦角的确定方法,最终主要以Hoek-Brown准则为基础,结合其他方法,综合评判确定岩体力学参数.结果表明,大尺度垂悬岩体质量好,不同方法得到的力学参数值有所差别 ...
周舒威 +3 more
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Stability Analysis of Deep Foundation Pit of Hechang Trade Center in Quanzhou [PDF]
, 2017 基坑力学特性与变形机理复杂，且具有较强地域性，在进行基坑支护设计及施工时多采用工程经验类比法，为确保基坑的稳定性，需要对基坑稳定性进行较为详细的分析验证。本文针对泉州和昌贸易中心大型深基坑工程，在总结基坑稳定性分析基本原理及验算公式的基础上，进行整体、抗隆起、抗倾覆及抗冲剪稳定性分析验算，得到基坑四种稳定性安全系数，以验证此基坑的稳定性，在此基础上，深入探讨了土层粘聚力、内摩擦角及重度和桩入土深度等因素与基坑四种稳定性安全系数的相互关系，对于基坑工程的稳定性分析具有一定参考意义。本文主要研究结论包括： （
潘志平
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Shear characteristics and mesoscopic damage mechanism of long time soaking red sandstone under loading and unloading conditions [PDF]
The bank slope rock mass below the flood control restricted water level (145 m) in the Three Gorges Reservoir area has experienced long-term immersion in the process of reservoir water lifting and lowering; the water level changes lead to the rock mass ...
Binghao ZHOU +4 more
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Shuitu Baochi Xuebao, 2019 旨在从岩土力学性质的角度为崩岗侵蚀提供理论依据，采用直接剪切实验，对鄂东南崩岗区典型花岗岩风化岩土体剖面不同方向上原状土的抗剪强度进行测定，并分析了花岗岩风化岩土体抗剪强度在剖面尺度上的异向性及其影响因素。结果表明，饱和条件下，花岗岩风化岩土体黏聚力和内摩擦角的变化范围分别为3.19~19.26 kPa和26.50°~32.42°，其中B2层黏聚力最大，而各层次间内摩擦角的差异并不明显（p>0.05）；黏聚力和内摩擦角均存在明显的异向性，其中水平方向总体大于垂直方向，且黏聚力的异向性较内摩擦角更明显 ...
娜荷芽 +6 more
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Shuitu Baochi Xuebao, 2021 土-水特征曲线通常用于估计非饱和土壤的抗剪强度，但是由于植物根系的吸水作用和加筋效应，使得植物边坡的抗剪强度不能直接利用基于基质吸力的非饱和土抗剪强度计算公式进行计算。以裸露边坡和植被边坡为研究对象，采用张力计现场测试和室内剪切试验相结合的方法，拟合水土特征曲线关系。结果表明：（1）植物根系的植入有效地提高了边坡土体的进气值，较素土进气吸力值增幅41.10%。在同等含水率条件下，植物边坡基质吸力明显大于素土边坡，提高了边坡土体的持水能力。（2）边坡红黏土基质吸力与含水率的关系符合V-G模型 ...
王轩 +4 more
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