Security Control Method of Loading for Surcharge Preloading Based on the Stress Path

Abstract:

All the time, security control method of loading is an important research part in the surcharge preloading, which is directly related to safety of the construction process. Starting from the stress path, discussing the variation of excess pore water pressure and relationship between stress path and security, and bringing forward the control method with a safety factor F_s based on the stress path. By measuring the change of excess pore water pressure, the control method with a safety factor F_s can reflect quantitatively the security status of soil and achieve the purpose of the process control, finally the security control method including the safety factor of loading and speed control is put forward to monitor construction safety. The safety factor of loading F_s is verified and back analyzed with the finite-element software, getting the correction factor from 0.90 to 1.20.

• Periodical: Advanced Materials Research (Volumes 368-373)
• Pages: 2795-2803
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.368-373.2795
• Online since: October 2011
• Authors: Heng Hu, Yan Li, Zhi Liang Dong, Yan Luo, Gong Xin Zhang
• Keywords: Correction Factor, Limit Increment of Pore Water Pressure, Process Control, Safe Factor of Loading, Stress Path, Surcharge Preloading

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