Effect of Dry-Wet Cycle on Stability of Granite Residual Soil Slope

作     者：De-Yong Wang Qing-Jun Zeng Jing Wang Mi Zhou 

作者机构：CCCC Fourth Harbor Engineering Institute Co. Ltd. Guangzhou 510230 China Key Laboratory of Environmental Protection & Safety of Communication Foundation Engineering CCCC Guangzhou 510230 China Southern Marine Science and Engineering Guangdong Laboratory Zhuhai 519082 China State Key Laboratory of Subtropical Building Science South China University of Technology Guangzhou Guangdong 510640 China 

出 版 物：《IOP Conference Series: Earth and Environmental Science》 

年 卷 期：2020年第526卷第1期

摘      要：The dry-wet cycle has a significant effect on the shear strength of the granite residual soil, which will affect the stability of the slope. A numerical model of the road cutting slope considering the strength change of the granite residual soil under conditions of dry-wet cycle was established. The numerical model was compared with the previous research results to obtain a good agreement, indicating the validity of the model established. Then several influence factors such as the number of cycles, initial cohesion, friction angle, initial slope angle, excavation slope angle and other factors are considered, and the parameter analysis of the stability development of the road cutting slope with the strength changes of the granite residual soil under dry and wet cycling conditions is considered. The research results show that the dry-wet cycle has a great impact on the stability of the road cutting slope of granite residual soil, which reduces the slope stability by about 10-30%. The conclusions of this paper provide a certain theoretical guidance for the design and application of the roadside slope engineering of granite residual soil.