| 循环荷载作用下砂土的一种普遍弹塑性模型 |
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| 引用本文： | 邱长林,邓卫东.循环荷载作用下砂土的一种普遍弹塑性模型[J].天津大学学报(自然科学与工程技术版),1999,32(2):154-158. |
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| 作者姓名： | 邱长林 邓卫东 |
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| 作者单位： | [1]天津大学建筑工程学院 [2]重庆公路科学研究所 |
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| 摘 要： | 本文根据砂土在动荷作用下的反应特性建立了一个动荷作用下砂土的弹塑性模型。该模式通过引入相对应力比的概念，使得应力路径上的每一个点都处于加载状态。模型不直接定义屈服面和塑性势函数，而是由破坏面、流动方向、初始加载面、加载方向和塑性模量等部分组成，具有参数少且易确定等特点。最后给出了该模型参数的确定方法，并通过和试验数据的比较证明了该模型的合理性。
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| 关 键 词： | 弹塑性模型 相对应力比 砂土 循环荷载 |
A GENERAL ELASTO PLASTIC MODEL OF SANDS UNDER CYCLIC LOADING |
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| Qiu,Changlin,Yan,Shuwang.A GENERAL ELASTO PLASTIC MODEL OF SANDS UNDER CYCLIC LOADING[J].Journal of Tianjin University(Science and Technology),1999,32(2):154-158. |
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| Authors: | Qiu Changlin Yan Shuwang |
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| Abstract: | A elasto plastic model based on the properties of sands under cyclic loading is presented in this paper.Every point of this model is in a state of loading or neutral loading by the usage of relative stress ratio.It does not define yield surface and potential surface explicitly.It is made up of failure envelope,flow direction,loading direction,original loading surface and plastic modulus.Parameters of this model are relative fewer and easy to determine.The method of determining parameters is given.The reasonableness of this model is showed by comparing the results predicted by this model with those of experiment. |
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| Keywords: | cyclic loading elasto plastic model relative stress ratio |
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