High Fill Stone Embankment Stability And Settlement Law

With the rapid development of the constructions in western China, the research on the design and building technology, the quality control and the evaluation parameters of high rock-filled embankment has been one of the key technologies in highway building in mountainous areas. In this paper, thoroughly discussed are stability and settlement laws of high rock-filled embankment based on the joint research project, Research on Construction Technology and Quality Control of High-filled Embankment, by Guangxi Highway Management Bureau and College of Civil Engineering, Hunan University. The reference values of strength parameters of the grounds and rock-fillers of the high rock-filled embankment on Liuzhai-Shuien highway in Guangxi are obtained in this paper by synthetically analyzing the construction technology at home and abroad and indoor rock tests. By comparing the analysis method of settlement laws and thoroughly analyzing the datum of the embankment settlements of Liuzhai-Shuiren highway from the whole construction period, a new method generated from expectation technology to analyze the embankment settlement laws, "Compete" growth curve, is presented in this paper and the result tallies with the observation data. For there are shortcomings in indoor rock tests, in this paper by combining finite element method with Duncan-Chang nonlinear constitutive model and composite method, a method for back analysis of the strength parameters of rock fillers is presented with a corresponding program, which has been successfully applied. By thoroughly analyzing the methods on slope stability of high rock-filled embankment, in this paper, a new kind of composite evolutionary algorithm is formed to search the critical slippage surface and also discussed in this paper is a new way to simplify the procedure of general slice method for stability analysis. During the research period, by combining theory analysis with engineering practice, the field tests in three sections with high rock-filled embankments, which are over 30m high, are put over. Through the tests, plenty of valuable field data are obtained which will be helpful in the highway constructions in western China in the future.