Equilibrium Iteration Method in Road Landslide Stability Analysis

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by Yunsheng Zhu, Transportation College in Wuhan University of Technology, Wuhan 430063., Zhuyunsheng@whut.edu.cn,
Huilun Xiang, Transportation College in Wuhan University of Technology, Wuhan 430063,
Hourong Kang, Guizhou Communications Department, Guiyang, 550003., Kanghourong@163.com,
Jian'an Yang, United Communications Investment Co., LTD in Hubei, Wuhan, 430010., Yangjianan@sohu.com,

Document Type: Proceeding Paper

Part of: ICCTP 2011: Towards Sustainable Transportation Systems

Abstract: Automatic establishment of finite element model is realized by means of the secondary development program based on the COSMOS/M software, which greatly simplifies modeling work for multi-profiles of road landslide. Flexible and rigid springs are used to simulate contacting friction model on the potential sliding surface. Taking the stress redistribution on potential sliding surface into consideration, the characteristics of stress-strain and displacement in potential sliding surface are gained by equilibrium iteration method. According to the normal and tangential stress of spring elements, the safe coefficient of potential landslide is automatically calculated by the secondary development program. This paper concludes that the sliding process of actual landslide can be effectively simulated using sliding contact friction model which was described by hard and soft springs and the safe coefficient of landslide is more close to the actual stress state through iterative calculation of stress redistribution on sliding surface.

Subject Headings: Landslides | Equilibrium | Highways and roads | Traffic models | Sliding effects | Stress strain relations | Simulation models | Friction | Automation | Finite element method |

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