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| 考虑湿化效应的堆石料Gudehus-Bauer 亚塑性模型应用研究 | |
| 引用本文： | 岑威钧,Erich Bauer,Sendy F.Tantono.考虑湿化效应的堆石料Gudehus-Bauer 亚塑性模型应用研究[J].岩土力学,2009,30(12):3808-3812. |
| 作者姓名： | 岑威钧 Erich Bauer Sendy F.Tantono |
| 作者单位： | 1. 河海大学,水利水电工程学院,南京,210098 2. Institute of Applied Mechanics, Graz University of Technology, Graz, 8010, Austria 3. Petra Christian University, Surabaya, Indonesia |
| 基金项目： | 中国博士后科学基金资助项目，河海大学自然科学基金项目 |
| 摘 要： | 在扼要分析堆石料主要力学特性的基础上，在亚塑性理论框架内，采用扩展的Gudehus-Bauer亚塑性模型对堆石料因含水率发生变化引起的湿化行为进行建模预测。扩展模型除能考虑含水率对颗粒硬度的影响外，还能反映土体密实度、应力状态和含水率等对堆石料非线性和非弹性变形的影响。将该模型应用于心墙坝初次蓄水时应力变形的亚塑性计算分析中。结果表明，扩展模型能较合理地反映心墙堆石坝的湿化变形规律。 |
| 关 键 词： | 堆石料 湿化 亚塑性 Gudehus-Bauer模型 数值验证 心墙坝 |
| 收稿时间： | 2007-03-01 |
Application of Gudehus-Bauer hypoplastic model of core-wall type rockfill dams considering wetting behavior |
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| CEN Wei-jun,ERICH Bauer,SENDY F. Tantono.Application of Gudehus-Bauer hypoplastic model of core-wall type rockfill dams considering wetting behavior[J].Rock and Soil Mechanics,2009,30(12):3808-3812. | |
| Authors: | CEN Wei-jun ERICH Bauer SENDY F Tantono |
| Institution: | 1. College of Water Conservancy & Hydropower Engineering, Hohai University, Nanjing 210098, China; 2. Institute of Applied Mechanics, Graz University of Technology, Graz, 8010, Austria; 3.Petra Christian University, Surabaya, Indonesia |
| Abstract: | Based on the analysis of main characters of weathered rockfill materials, the deformation of rockfill due to a change of the moisture contents can be forecasted using an extended Gudehus-Bauer hypoplastic model. The updated model takes into account a moisture sensitive granular hardness; and it can reflect the influence of density, stress state, rate of deformation and moisture content on the nonlinear, inelastic stress strain behavior of rockfills. Numerical simulation is carried out to simulate the evolution of deformation and stress of a core-wall type rockfill dam during the first water impounding. The results are reasonable. |
| Keywords: | rockfill wetting behavior hypoplasticity Gudehus-Bauer model numerical verification core-wall type rockfill dam |
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