Research on Engineering Characteristics and Engineering Techniques for Filling of Slope Weak Foundation
WEI Yong-xing1, LUO Qiang2, QIU Yan-jun2
1.The Second Survey and Design Institution of China Railway, Chengdu, Sichuan 610031, China; 2.Southwest Jiaotong University, Chengdu, Sichuan 610031, China
Abstract：Research purposes: The filling of slope weak foundation is the common matter encountered in construction of railway, highway and city in mountain area, which is the weak link in the construction, so it is necessary to make research on the engineering characteristics and engineering techniques for filling of slope weak foundation.
Research methods: The systematical research on the engineering characteristics and engineering techniques for filling of slope weak foundation is made by the means of numerical analysis, centrifugal model testing, field monitoring and synthetic analysis.
Research results: Based on the concept of deformation control the suggested limit of equivalent safety coefficient and suggestion to design principle are put forward respectively for stabilizing the filling of slope weak foundation and mainly for limiting lateral deformation of slope weak foundation.
Research Conclusions: According to the concept of deformation control and on the basis of the evaluation and analysis of stability of slope weak foundation by adopting safety coefficient method, the factors of deformation features of slope weak foundation should be taken into consideration fully and the sampling safety coefficient for stabilizing embankment should be increased rationally in order to make slope weak foundation having the same stable level as that of lateral weak foundation. When filling embankment is conducted on slope weak foundation, the compressibility of soil of foundation and the bottom transverse slope should be inspected clearly and some measures should be taken for limiting the lateral deformation of slope weak foundation in order to guarantee the stability of slope weak foundation.
魏永幸，罗强，邱延峻. 斜坡软弱地基填方工程特性及工程技术研究[J]. 铁道工程学报, 2006, 23(9): 10-15.
WEI Yong-xing, LUO Qiang, QIU Yan-jun. Research on Engineering Characteristics and Engineering Techniques for Filling of Slope Weak Foundation. 铁道工程学报, 2006, 23(9): 10-15.
2006, Vol. 23 
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