| 对土体动力黏塑性记忆型嵌套面模型的改进 |
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| 引用本文： | 庄海洋,陈国兴. 对土体动力黏塑性记忆型嵌套面模型的改进[J]. 岩土力学, 2009, 30(1): 118-122 |
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| 作者姓名： | 庄海洋 陈国兴 |
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| 作者单位： | 1.东南大学 土木工程学院，南京 210024；2.南京工业大学 岩土工程研究所，南京 210009 |
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| 基金项目： | 国家自然科学基金，江苏省高校自然科学基金 |
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| 摘 要： | 在对土体动力黏塑性记忆型嵌套面本构模型已有的研究基础上，对该模型进行改进，不再对空间锥形屈服面变化时屈服面锥角 的变化规律作假定，按照土体在循环荷载作用下空间屈服面在子午平面上投影线的实际变化规律，建立屈服面硬化参数的增量表达式，完善了该模型的理论基础，为进一步对该模型的试验验证和改进提供了理论依据，并对比分析了分别使用改进后模型和改进前模型计算同一场地地震反应的计算结果。
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| 关 键 词： | 土体动力本构模型 地震反应 循环荷载 |
| 收稿时间： | 2007-06-11 |
Improvement of dynamic viscoplastic memorial nested yield surface model of soil |
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| ZHUANG Hai-yang,CHEN Guo-xing. Improvement of dynamic viscoplastic memorial nested yield surface model of soil[J]. Rock and Soil Mechanics, 2009, 30(1): 118-122 |
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| Authors: | ZHUANG Hai-yang CHEN Guo-xing |
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| Affiliation: | 1. School of Civil Engineering, Southeast University, Nanjing 210096, China; 2. Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009, China |
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| Abstract: | The dynamic viscoplastic memorial nested yield surface model of soil has been constituted previously and published on the Vol.28 (No.10) of Chinese Journal of Geotechnical Engineering. In this paper, the model is developed and the model parameter , the point angle of cone-shaped yield surface, doesn’t assumed to change by the supposed rules. According to the reality changes of nested yield surfaces, the incremental expressions of model harden parameters are deduced. These developments on the model perfecte its theoretical foundation and are consistent with the test results. At last, the earthquake responses of a site is analyzed by using the developed model and primary model respectively; and the differences of two models are analyzed. |
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| Keywords: | dynamic consititutive model of soil earthquake response cyclic loading |
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