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郑建业, 葛修润, 孙红. 考虑试样特殊区的扰动状态理论合理性细观分析[J]. 岩土工程学报, 2008, 30(2): 263-267.
引用本文: 郑建业, 葛修润, 孙红. 考虑试样特殊区的扰动状态理论合理性细观分析[J]. 岩土工程学报, 2008, 30(2): 263-267.
ZHENG Jianye, GE Xiurun, SUN Hong. Meso analysis for rationality of disturbed state concept theory considering special area of specimens[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(2): 263-267.
Citation: ZHENG Jianye, GE Xiurun, SUN Hong. Meso analysis for rationality of disturbed state concept theory considering special area of specimens[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(2): 263-267.

考虑试样特殊区的扰动状态理论合理性细观分析

Meso analysis for rationality of disturbed state concept theory considering special area of specimens

  • 摘要: 利用医用CT装置完成实验过程中试样内部的实时定量观测。对基于硬化模型建立的扰动状态理论(DSC)做出细观分析,进一步证明其解决问题的逻辑合理性。利用硬化土和软化土的宏观剪切实验与实时细观CT实验结果对照,指出土体的硬化响应或软化响应与相应CT数统计值变化规律的协调关系。不论材料是否存在特殊区,硬化材料的CT数变化规律和软化材料的CT数变化规律都存在很大的差异性,这个差异性的存在与是否叠加扰动因子相对应。扰动状态理论利用硬化模型并叠加扰动因子得到软化响应。

     

    Abstract: Countable real-time measurement of specimen interior under testing was taken by using medical-use CT instrument.Meso analysis on disturbed state concept theory(DSC) based on hardening model was performed.The logical rationality of problem-solving steps of DSC was further proved.The comparison between response’s of softening clay and hardening clay,through antitheses of results under shear loading in macro vision,along with outcomes of computerized tomography real-time test,the harmony was prohibited between the macro results and meso results that were shown by the synchronous experimental courses.Whether special area existed in specimen section or not did not influence the following conclusions: for hardening or softening materials,statistic variation of CT values,related to the superposition of disturbance factor,was different.Softening response was obtained with DSC by utilizing hardening model and introducing disturbance factor into the response depiction.

     

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