Research on the In Situ Test of Thick-Layer Soft Ground of High-Speed Railway Treated by PHC Pile

Abstract:

Based on the data obtained in the in-situ test of layered settlements in Wen-Fu Railway, the settlement regulation of the thick-layer soft soil treated by the composite structure of PHC pile-net is analyzed, and two calculation models are utilized to predict the final settlement. Since the predicted settlement is far less than the value required by the standard, the treatment method for the deep soft soils is proved to be reasonable. After that, according to the mechanism of the composite structure of PHC pile-net, the settlement values are calculated using various common calculation methods and the results are compared to the corresponding experimental data. The applicability of these methods is discussed and then the settlement calculation method of the thick-layer soft foundation treated by the composite structure of PHC Pile-net is obtained. The series of conclusions finally given provide the basis for the theoretical research and optimum design of pile-net composite foundation.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 1603-1610
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.1603
• Online since: October 2012
• Authors: Dong Yang, Wei Yun Chen, Tang Dai Xia, Li Na Zhong
• Keywords: In Situ Test, Composite Foundation, High-Speed Railway (HSR), Settlement Calculation, Thick-Layer Soft Soil

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