Study on Settlement of Railway Embankment on Deep Completely Decomposed Granite Ground by Centrifugal Model Tests
The settlement cntrol of high-speed railway is a key technology in embankment engineering. In order to reveal the engineering characteristics of the deep completely decomposed granite soil in Hainan east loop line, a passenger dedicated line, four groups of centrifuge model tests were conducted to study the settlement properties of the subsoils untreated, treated by dynamic compaction, and reinforced with cement-mixed piles, under the action of the embankment, especially the relationship between settlement and time, including the settlement during and post-construction. The results show that the Weibull model can describe the relationship between embankment settlement and time well, and that the post-construction settlements of the subsoil meet the requirements of the relevant code. Among the two foundation treatment measures, dynamic compaction is more effective than reinforcement with cement-mixed piles, and the pressure on the contact surface between embankment and subsoil was obviously different from the commonly used calculated values.
Chaohe Chen, Yong Huang and Guangfan Li
H. B. Xiao and G. S. Lu, "Study on Settlement of Railway Embankment on Deep Completely Decomposed Granite Ground by Centrifugal Model Tests", Advanced Materials Research, Vols. 243-249, pp. 4213-4219, 2011