膜袋砂围堰荷载下软土地基破坏分区特性研究

膜袋砂围堰荷载下软土地基破坏分区特性研究 English Version

基金项目: 中国电力建设集团华东勘测设计研究院有限公司科技项目（SD2013-10）; 广东省水利科技创新项目（2015-17）; 广州市科学研究专项重点项目（2017-34）

详细信息

1. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China;
2. Huadong Engineering Corporation Limited, Hangzhou 310014, China

摘要: 膜袋砂围堰对地基的作用是一种典型的柔性荷载,该荷载作用下的软土地基的破坏模式及潜在滑裂面与刚性基础荷载有所不同。针对这一问题,设计并完成了一组室内模型试验,模拟膜袋砂围堰的填筑过程,观测获得了围堰填筑过程中和加载完成后软土地基的变形形态。基于模型试验得到的软土地基位移矢量和裂缝形态,参考传统地基承载力理论,提出了一种新的地基破坏分区方法,并用数值模拟方法分析了该破坏分区的合理性。新的分区方法主要改变了软土地基破坏时主动区和过渡区的划分,对于软土地基破坏分区是一种新的认识。
- 膜袋砂围堰 /
- 软土地基 /
- 破坏分区 /
- 模型试验
Abstract: Sandbag cofferdam applies flexible load on soil foundation. The failure mode and sliding surface of soft soil foundation under sandbag cofferdam should be significantly different from that under rigid base. Aimed to get better understanding about this problem, a model test is conducted to simulate the construction process of sandbag cofferdam, in which the displacement of soil is observed. Based on the results of model tests, a new failure zone is proposed. The finite element analysis is used to verify the reasonability of this new failure zones.
- sandbag cofferdam /
- soft soil foundation /
- failure zone /
- model test

[1]	MATSUOKA H, LIU S. New earth reinforcement method by soilbags (Donow)[J]. Soils and Foundations, 2003, 43(6): 173-188.
[2]	白福青, 刘斯宏, 王艳巧. 土工袋加固原理与极限强度的分析研究[J]. 岩土力学, 2010, 31(增刊1): 172-176. (BAI Fu-qing, LIU Si-hong, WANG Yan-qiao. Research on reinforcement mechanism and failure strength of soilbags[J]. Rock and Soil Mechanics, 2010, 31(S1): 172-176. (in Chinese))
[3]	LESHCHINSKY D, MARCOZZI G F. Bearing capacity of shallow foundations: rigid versus flexible models[J]. Journal of Geotechnical Engineering, 1990, 116(11): 1750-1756.
[4]	MURAMATSU D, ZHANG F, SHAHIN H M. Numerical simulation on bearing capacity of soilbag-reinforced ground considering finite deformation[J]. Jiban Kogaku Janaru, 2007, 2(1): 11-23.
[5]	高峰. 滨海软基上膜袋围堰稳定性分析及沉降预测研究[J]. 岩土力学, 2010, 31(4): 1233-1237. (GAO Feng. Analysis of stability and settlement prediction of cofferdam with geotextile bags on seaside soft foundation[J]. Rock and Soil Mechanics, 2010, 31(4): 1233-1237. (in Chinese))
[6]	陈凌伟. 软基上大砂袋围堰的变形与失稳模式研究[D]. 广州: 华南理工大学, 2016. (CHEN Ling-wei. Deformation and failure mode of the large-scale geotextile sand container cofferdam on soft foundation[D]. Guangzhou: South China University of Technology, 2016. (in Chinese))

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