| 一种与材料状态相关的砂土剪胀性理论模型 |
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| 引用本文： | 王运霞,鹿英奎,高志军. 一种与材料状态相关的砂土剪胀性理论模型[J]. 北方工业大学学报, 2012, 24(3): 68-71 |
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| 作者姓名： | 王运霞 鹿英奎 高志军 |
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| 作者单位： | 北方工业大学建筑工程学院,100144,北京;中建一局集团建设发展有限公司,100102,北京;北京北国建筑工程有限责任公司,100068,北京 |
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| 基金项目： | 北京市教委科技发展计划项目（KM200910009008）. |
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| 摘 要： | 结合密砂和中密砂的相变点的概念,提出了以相变状态为参考状态的状态参量表达式,并将此状态参数引入剪胀比的计算公式.在修正剑桥模型的基础上,提出了新的塑性势函数和硬化参数表达式以消除应力路径的影响.在增量塑性理论的基础上,建立了一种适合于密砂和中密砂的与材料状态相关的剪胀性理论模型.
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| 关 键 词： | 砂土 剪胀性 相变状态 状态参量 |
A Theoretical Constitutive Model for Dilatancy of Sand Related to State of Materials |
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| Wang Yunxia , Lu Yingkui , Gao Zhijun. A Theoretical Constitutive Model for Dilatancy of Sand Related to State of Materials[J]. Journal of North China University of Technology, 2012, 24(3): 68-71 |
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| Authors: | Wang Yunxia Lu Yingkui Gao Zhijun |
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| Affiliation: | Wang Yunxia Lu Yingkui Gao Zhijun (1)Col. of Architectural Engineering, North China Univ. of Tech. , 100144, Beijing, China; 2)China Construction First Division Grop Construction Development Co. , Ltd. , 100102, Beijing, China 3)Beijing North China Construction Engineering Limited Liability Company, 100068, Beijing, China) |
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| Abstract: | Combining with the concept of phase transformation points of dense sand and medi- um-dense sand, the paper puts forward an expression of state parameter, using the state of phase transformation as the reference state, and introduces this state parameter into the dilatancy ratio formulas. Based on the Modified Cam-clay Model, the paper puts forward new formulas of plastic potential function and the hardening parameter in order to eliminate the influence of the stress path. On the basis of the theory of plastic increment, a dilatancy theoretical constitutive model related to the state of materials, suitable for dense sand and medium-dense sand, is set up. |
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| Keywords: | sand dilatancy state of phase transformation state parameter |
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