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| Numerical Simulation of Post-completion Settlement of Embankment Based on Creep Test |
| YIN Hong-bo1, LIU Jun-xin2 |
| 1.The Third Survey and Design Institute of China Railway, Tianjin 300251, China; 2.Southwest Jiaotong University, Chengdu, Sichuan 610031, China |
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Abstract Research purposes: High-speed railway requires zero settlement for the post-completion settlement of embankment in order to maintain the regularity and stability of track. Red rock belongs to the filling of C type and is easy to disintegrate and soften. The purposes of the research are to test and verify the feasibility of red rock as filling for embankment of high-speed railway after smashing.
Research methods: First smash the filling of red rock to less than 2 mm and increase the compactness of sample to 95%, then make step-by-step single axle loading on the sample until the sample damages. The duration of loading for one step is about one month. At the same time, fit the reduced section of creep curve with K-K-H model based on the test result of creep curve by step-by-step loading, and predict the post-completion settlement of the embankment with 10 m high filling by adopting numerical simulation according to the fitting result.
Research results: It is known from the result of numerical simulation; the post-completion settlement of embankment top as 4 mm for one year and embankment top is in stable status about 40 days.
Research Conclusions: The result shows red rock as filling can meet the requirement of post-completion zero settlement for embankment after it is treated by construction technique.
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Received: 05 June 2006
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2006, Vol. 23 
