Centrifugal Model Test of Red and Soft Rock-filled Embankment
QING San-hui1，HUANG Run-qiu2，CAO Xin-wen3
1 .Chengdu University of Technology，Chengdu，Sichuan 610059，China; 2. The Second Survey and Design Institute of China Railway , Chengdu，Sichuan 610031，China; 3.Southwest Jiaotong University , Chengdu，Sichuan 610031， China
Abstract：Research purposes: This paper reasonably confirms the compacting parameter of red and soft rock-filled embankment through investigating the settlement characteristics of red and soft rock fillings under different compacting conditions.
Research methods: This paper verifies the suitability of red soft rock-filling for embankment through the geotechnical centrifugal model test.
Research results: The after-construction settlement of red and soft rock-filled embankment will gradually weaken with increasing of compacting parameter. Under the conditions of compacting parameters:0.87，0. 90，0. 93，0.97 respectively，the ratios of final settlement after construction to heights of embankment are 2. 4‰, 1.913‰, 1.833‰, and 1 .673‰ respectively which could satisfy the requirements of after-construction settlement control standard for subgrade as regulated in “Temporary Regulations for Design of 200 km/h Railways".
Research conclusions: Red and soft rocks could be used directly as embankment fillings and its compacting coefficient should be controlled above 0. 93. This research outcome has a great significance for construction of the railways and highways in the areas covered with red and soft rocks.
卿三惠1，黄润秋2，曹新文3. 红层软岩填筑路堤的离心模型试验[J]. 铁道工程学报, 2007, 24(2): 41-46.
QING San-hui，HUANG Run-qiu，CAO Xin-wen. Centrifugal Model Test of Red and Soft Rock-filled Embankment. 铁道工程学报, 2007, 24(2): 41-46.
2007, Vol. 24 
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