• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Pan-American conference on unsaturated soils >Unsaturated and Saturated Soil-Structure Interface Effect on Cracking Behavior of Soil
【24h】

Unsaturated and Saturated Soil-Structure Interface Effect on Cracking Behavior of Soil

机译：不饱和和饱和土-结构界面对土壤开裂行为的影响

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Soil-structure interfaces occur at the contact surfaces between the soils and the engineering constructions, such as retaining wall, foundations, and others, where reciprocal transition of stresses takes place at interfaces. An intrinsic motivation of this work stemmed from observations of problematic behavior of natural deposited soils and engineered soils during drying-wetting processes due to variations in annual thermal conditions. In response to variations in environmental conditions, unsaturated soils may experience different hydraulic, and mechanical behavior under wetting and drying processes due to hysteresis. This may cause evolution and propagation of cracks in the soil. In this study, four drying tests (shrinkage tests) were performed using identical circular plates. Two plates were fabricated; one with smooth-base and the other one with circular-grooved-base. The smooth plate was employed to allow the soil sample to shrink freely without crack formation, while the groove plate was used to provide restraints during shrinkage where cracks may develop during drying process. Furthermore, soil samples were tested under saturated and unsaturated in order to investigate the influence of initial moisture conditions of soils on the initiation and propagation of cracks during one drying and wetting cycle. Crack patterns were quantitatively obtained using image analysis techniques. The results of the drying tests refer to the important impact of soil-interface and the initial saturation conditions on the initiation and propagation of cracks during wetting and drying cycle.
机译：土-结构界面出现在土壤与工程结构（例如挡土墙，地基等）之间的接触表面，在该处界面处会发生应力的相互转换。这项工作的内在动机源于对自然沉积土壤和工程土壤在每年的干湿过程中由于年热条件变化而产生的问题行为的观察。为了响应环境条件的变化，由于滞后作用，非饱和土壤在润湿和干燥过程中可能会经历不同的水力和机械性能。这可能会导致土壤裂缝的发展和传播。在这项研究中，使用相同的圆形板进行了四个干燥测试（收缩测试）。制作了两块板;一个带有光滑底座，另一个带有圆形凹槽底座。光滑板用于使土壤样品自由收缩而不会形成裂纹，而沟槽板用于在收缩过程中提供约束，在干燥过程中可能会出现裂纹。此外，在饱和和非饱和状态下对土壤样品进行了测试，以研究土壤的初始水分条件在一个干燥和润湿周期中对裂纹萌生和扩展的影响。使用图像分析技术定量获得裂纹图案。干燥测试的结果是指土壤界面和初始饱和条件对润湿和干燥周期中裂纹萌生和扩展的重要影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号