| 不同应力水平下结构性黏土动力特性试验研究 |
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| 引用本文： | 雷华阳,刘景锦,霍海峰. 不同应力水平下结构性黏土动力特性试验研究[J]. 地震工程学报, 2011, 33(3): 228-232,242 |
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| 作者姓名： | 雷华阳 刘景锦 霍海峰 |
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| 作者单位： | 天津大学土木工程系;滨海土木工程结构与安全教育部重点实验室(天津大学); |
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| 基金项目： | 国家自然科学基金(51078262); 国家(973)重点基础研究发展计划(2010CB732106) |
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| 摘 要： | 对天津滨海地区典型结构性软黏土进行了压缩试验和不同固结应力下的循环三轴试验。结果表明:结构性软黏土的静力变形特性以先期固结应力和结构屈服应力为分界点可分为3个阶段;不同固结应力下的动应变-振次关系曲线上存在着一个临界动应力比,且该值随着围压的增大而降低;孔隙水压力的变化以结构屈服应力为转折点呈现出不同的变化规律;当振动频率为2Hz时固结应力的改变对轴向动应变的影响不明显。
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| 关 键 词： | 应力水平 结构性软黏土 动力变形特性 试验研究 屈服应力 |
Experimental Study on Dynamic Properties of Structural Soft Clay with Different Stress Level |
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| LEI?Hua-yang,LIU?Jing-jin and HUO?Hai-feng. Experimental Study on Dynamic Properties of Structural Soft Clay with Different Stress Level[J]. China Earthguake Engineering Journal, 2011, 33(3): 228-232,242 |
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| Authors: | LEI?Hua-yang LIU?Jing-jin HUO?Hai-feng |
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| Affiliation: | LEI Hua-yang1,2,LIU Jing-jin1,HUO Hai-feng1(1.Department of Civil Engineering,Tianjin University,Tianjin 300072,China,2.Key Laboratory of Coast Civil Structure Safety(Tianjin University),Ministry of Education,China) |
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| Abstract: | A series of compression tests and cyclic triaxial shear tests under different consolidation stress are performed on the typical structural soft soil in Binhai region of Tianjin,which reveals the law of cyclic deformation under dynamic loading.The results show that the static deformation of structural soft clay can be divided into three parts by preconsolidation stress and structural yield stress.The relation curves of cyclic strain with cycle number under different consolidation stress has a critical dynami... |
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| Keywords: | Stress level Structural soft clay Dynamic deformation property Experimental study Yield stress |
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