| 各向异性固结软粘土的循环软化-孔压模型 |
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| 引用本文： | 王军,丁光亚,潘晓东. 各向异性固结软粘土的循环软化-孔压模型[J]. 哈尔滨工业大学学报, 2009, 0(12): 166-170 |
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| 作者姓名： | 王军 丁光亚 潘晓东 |
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| 作者单位： | 温州大学,建筑与土木工程学院,浙江,温州,325035;浙江工业大学,岩土工程研究所,杭州,310032 |
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| 基金项目： | 国家自然科学基金资助项目(50979096,50808145,50908212);浙江省自然科学基金资助项目(Y1090105);温州市科技计划资助项目(S20080046,S20090006);浙江省建设厅科研资助项目(08Z027) |
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| 摘 要： | 通过对杭州软粘土进行应力控制的循环三轴试验,研究了各向异性固结软粘土的循环软化特性及孔压发展规律.试验结果表明,随着循环次数的增加和循环应力比的提高,软化指数逐渐降低,残余孔压逐渐增高;当采用各向异性固结时,初始静剪应力的增大会造成土体软化加快,但残余孔压变化缺乏一定规律性.建立了各向异性固结软粘土循环软化-孔压模型,该模型反映了软粘土循环软化特性及残余孔压增长规律.
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| 关 键 词： | 应变软化 循环荷载 孔压 各向异性固结 |
Cyclic-degradation-pore pressure generation model for anisotropic consolidated clay |
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| WANG Jun,DING Guang-ya,PAN Xiao-dong. Cyclic-degradation-pore pressure generation model for anisotropic consolidated clay[J]. Journal of Harbin Institute of Technology, 2009, 0(12): 166-170 |
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| Authors: | WANG Jun DING Guang-ya PAN Xiao-dong |
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| Affiliation: | 1.Architecture and Civil Engineering College,Wenzhou University,Wenzhou 325035,China;2.Institute of Geotechnical Engineering,Zhejiang University of Technology,Hangzhou 310032,China) |
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| Abstract: | In this paper,the residual pore-water pressures correlating to degradation index of anisotropic consolidated clay subjected to uniform stress-controlled triaxial loading are investigated.It is observed that the degradation index is lowered and the residual pore-water pressure is increased with the increasing number of cycles and the cyclic stress ratio.For anisotropic consolidated clay,the degradation index is lowered reduced with the increasing initial consolidation shear stress,however the development of residual pore-water pressure is irregular.A model of cyclic-degradation-pore pressure is presented,and it can describe the rules of cyclic degradation and pore-water generation. |
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| Keywords: | degradation cyclic loading pore water pressure anisotropic consolidation |
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