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胶凝砂砾石料弹塑性本构模型研究

蔡新, 杨杰, 郭兴文, 武颖利

蔡新, 杨杰, 郭兴文, 武颖利. 胶凝砂砾石料弹塑性本构模型研究[J]. 岩土工程学报, 2016, 38(9): 1569-1577. DOI: 10.11779/CJGE201609003
引用本文: 蔡新, 杨杰, 郭兴文, 武颖利. 胶凝砂砾石料弹塑性本构模型研究[J]. 岩土工程学报, 2016, 38(9): 1569-1577. DOI: 10.11779/CJGE201609003
CAI Xin, YANG Jie, GUO Xing-wen, WU Ying-li. Elastoplastic constitutive model for cement-sand-gravel material[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(9): 1569-1577. DOI: 10.11779/CJGE201609003
Citation: CAI Xin, YANG Jie, GUO Xing-wen, WU Ying-li. Elastoplastic constitutive model for cement-sand-gravel material[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(9): 1569-1577. DOI: 10.11779/CJGE201609003

胶凝砂砾石料弹塑性本构模型研究  English Version

基金项目: 水利部土石坝破坏机理与防控技术重点实验室开放基金项目(YK913001); 国家自然科学基金项目(51179061); 国家“十二五”科技支撑计划项目(2012BAD10B02); 中央级公益性科研院所基本科研业务费专项资金(青年)基金项目(Y313003); 中央高校基本科研业务费专项资金项目(2014B36814)
详细信息
    作者简介:

    蔡 新(1964- ),男,江苏启东人,博士,教授,从事力学教学和水工结构方面的研究。E-mail: xcai@hhu.edu.cn。

  • 中图分类号: TU411;TV321;TV649

Elastoplastic constitutive model for cement-sand-gravel material

  • 摘要: 为了建立合理的胶凝砂砾石料弹塑性本构模型,对胶凝掺量60 kg/m3的胶凝砂砾石料进行了三轴剪切排水与加卸载试验研究,结果可描述不同围压下的胶凝砂砾石料的应力-应变特性。基于试验数据及一些专家的研究,确定模型的弹性部分,提出了胶凝砂砾石料的剪切屈服与体积屈服方程,引入广义塑性理论,建立了适用于胶凝砂砾石料的弹塑性本构模型。模型共有9个参数,参数较少且确定简单。利用三轴剪切排水试验数据验证该模型计算结果,表明其能够较准确地反映胶凝砂砾石料应力应变关系。
    Abstract: In order to establish an elastoplastic constitutive model for cement-sand-gravel (CSG) material, firstly some samples with cement content of 60 kg/m3 are prepared for the consolidated drained triaxial tests under constant confining pressure, isotropic loading-unloading-reloading tests and loading-unloading-reloading triaxial tests (under consolidated drained condition). The test results depict the stress-strain curves under various confining pressures. Based on the test results and some related researches on CSG material by some experts, the elastic part of the model is put forward, the shear and volume yield surface model is proposed, and by introducing the generalized plasticity theory, an appropriate elastoplastic constitutive model for CSG material is established. The calculated results by the model including 9 parameters are compared with the experimental data of the consolidated drained triaxial tests. It is shown that the proposed model accurately depicts the relationship between stress and strain for CSG material.
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出版历程
  • 收稿日期:  2015-06-09
  • 发布日期:  2016-09-24

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