| 土方开挖粘塑性模糊随机损伤机理研究 |
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| 引用本文： | 王亚军,张我华.土方开挖粘塑性模糊随机损伤机理研究[J].岩土工程技术,2008,22(1):11-19. |
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| 作者姓名： | 王亚军 张我华 |
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| 作者单位： | 浙江大学软弱土与环境土工教育部重点实验室,浙江,杭州,310027 |
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| 摘 要： | 以基坑工程为例分析了开挖损伤演变的模糊随机性并建立了广义非确定性空间O：Б（s，f）。提出了初始损伤有效张量的概念模型，在“损伤源汇”概念基础上提出了模糊衰减模型，构造了粘塑性模糊随机损伤增量方程并实现了基坑开挖过程的模糊随机损伤模拟。在线性算子基础上提出了模糊随机损伤矢量极限值{Ωu}，进而建立了以损伤有效张量为基础的粘塑性模糊随机损伤本构模型及粘塑性非线性模糊随机数值方法。在粘塑性模糊随机损伤有限元基础上建立了粘塑性模糊随机损伤变化率方程，实现了对基坑开挖过程中模糊随机损伤演变发展的全面模拟，完成了模糊随机卸荷损伤模型的构建。
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| 关 键 词： | 基坑开挖 模糊随机卸荷损伤本构模型 模糊衰减模型 模糊随机损伤增量方程 粘塑性模糊随机损伤变化率方程 粘塑性非线性模糊随机损伤 |
| 文章编号： | 1007-2993(2008)01-0011-09 |
| 修稿时间： | 2007年11月14 |
Viscous-Plastic Fuzzy Stochastic Damage Mechanism Researching on Earthwork Excavation |
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| Wang Yajun Zhang Wohua.Viscous-Plastic Fuzzy Stochastic Damage Mechanism Researching on Earthwork Excavation[J].Geotechnical Engineering Technique,2008,22(1):11-19. |
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| Authors: | Wang Yajun Zhang Wohua |
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| Institution: | Wang Yajun, Zhang Wohua(Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education (Zhejiang University), Hangzhou Zhejiang, 310027 China) |
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| Abstract: | Generalized Uncertain SpaceO：Б（s,f） as tor pit-excavation engineering is set up with analysis on fuzzy and random characteristics of excavation damage evolution. Fundamental model of initial damage effective tensors is introduced here. Furthermore, the simulation of fuzzy stochastic damage on pit excavation application is realized by the help of viscous- plastic fuzzy stochastic damage incremental vector functions fabrication on the basis of fuzzy damping model on damage field source and sink definition. Fuzzy stochastic damage boundary value, namely, {Ωu}, is derived here from linear operator, and viscous-plastic fuzzy stochastic damage constitution model as well as viscous-plastic non-linear fuzzy stochastic numerical algorithm, in this paper, are formulated with damage effective tensors. Thereby, viscous-plastic fuzzy stochastic damage ratio vector functions is setup here on the basis of viscous-plastic fuzzy stochastic damage finite element method algorithm. So, the fuzzy stochastic unloading damage model is deduced overall and fuzzy stochastic damage evolution and development is interpreted deeply on pit excavation construction. |
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| Keywords: | pit excavation fuzzy stochastic unloading damage constitution model fuzzy damping model fuzzy stochastic damage incremental vector functions viscous-plastic fuzzy stochastic damage ration vector functions viscous-plastic no-linearfuzzy stochastic damage |
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