| 苏州软土蠕变特性的参数研究及其有限元应用 |
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| 引用本文： | 谈炎培,叶冠林,王建华,孙德安. 苏州软土蠕变特性的参数研究及其有限元应用[J]. 地下空间与工程学报, 2010, 6(1) |
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| 作者姓名： | 谈炎培 叶冠林 王建华 孙德安 |
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| 作者单位： | 上海交通大学土木工程系,上海,200240;上海大学土木工程系,上海,200444 |
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| 摘 要： | 为探讨苏州地铁一号线沿线软土地层的蠕变特性及其对盾构隧道长期沉降的影响,对该区土样进行三轴试验和一维蠕变试验。引入关口-太田模型(S-O模型)描述苏州土依赖时间的本构关系,结合有限元程序GLEAVES对试验进行数值模拟,并验证模型及程序的可靠性。最后对苏州地铁长期沉降作一算例分析。研究表明:苏州地铁沿线土层有明显的蠕变效应;引入S-O模型的GLEAVES程序较好地模拟出苏州土本构关系;为控制隧道的长期沉降,应严格控制盾构顶推力。
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| 关 键 词： | 软土 蠕变 本构模型 有限元分析 盾构隧道 |
Study on Parameter of Constitutive Model for Creep Characteristics of Suzhou Soft Soil and Its Application in Finite Element Analysis |
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| Tan Yanpei,Ye Guanlin,Wang Jianhua,Sun Dean. Study on Parameter of Constitutive Model for Creep Characteristics of Suzhou Soft Soil and Its Application in Finite Element Analysis[J]. Chinese Journal of Underground Space and Engineering, 2010, 6(1) |
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| Authors: | Tan Yanpei Ye Guanlin Wang Jianhua Sun Dean |
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| Affiliation: | 1.Department of Civil Engineering;Shanghai Jiaotong University;Shanghai 200240;China;2.Department of Civil Engineering;Shanghai University;Shanghai 200444;China |
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| Abstract: | The triaxial compression test and one dimensional creep test are employed for the soft soil along the No.1 Subway in Suzhou City to study its creep characteristics and their effect on the long-term settlement of shield tunnel.Sekiguchi-Ohta constitutive model(S-O model) is introduced to describe the time-dependent stress-strain behavior of the soil.The model is incorporated in the FEM program GLEAVES to simulate the above tests.The validity of the model and GLEAVES are checked.Then GLEAVES is used to analyz... |
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| Keywords: | soft soil creep constitutive model finite element analysis shield tunnel |
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