论文类型：期刊论文

第一作者：Kong, Gangqiang

通讯作者：Kong, GQ (reprint author), Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210098, Jiangsu, Peoples R China.

合写作者：Ding, Xuanming,Yang, Qing,Deng, Zongwei

发表时间：2013-03-01

发表刊物：DISASTER ADVANCES

收录刊物：SCIE

文献类型：J

卷号：6

期号：,1

页面范围：438-443

ISSN号：0974-262X

关键字：landslide disaster; PCC pile; embankment; sliding stability; LPILE

摘要：Cast-in-place concrete large-diameter pipe pile (referred to as PCC pile) is widely used for pile-supported embankment over soft soils in China. However, the studies focused on the sliding stability and calculated method of this new pile type under lateral load was relatively little. Therefore, base on PCC pile-supported embankments in the eastern coastal region of China case study, undrained shear strength, conventional p-y criteria, and modified pile modulus are recommended for lateral bearing capacity calculation basing on LPILE plus 5.0. The correctness of calculated method is verified by comparing the results on lateral load versus pile top deflection with those obtained by field test. The performances of drilled shaft with the same out-diameter, and PCC pile without considering pile core soils are also carried out for comparative analysis. The result shows that the performances of PCC piles under lateral load can be calculated through LPILE software with conventional p-y criteria of drilled shaft, and modified modulus of piles. The result also shows that when comparing with conventional drilled shaft with the same out-diameter, the lateral bearing capacity of PCC pile is reduced nearly about 20 %, while with nearly about 60 % concrete usage are saved. The results of this paper can provide design and calculation guide for practical PCC pile used for landslide disaster treatment under lateral load in United States.

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