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深厚软土地基细长PHC管桩水平荷载试验研究
引用本文:周万清,蔡健,林奕禧,黄良机.深厚软土地基细长PHC管桩水平荷载试验研究[J].华南理工大学学报(自然科学版),2007,35(7):131-136.
作者姓名:周万清  蔡健  林奕禧  黄良机
作者单位:1. 华南理工大学,建筑学院,广东,广州,510640
2. 珠海市建设工程质量监督检测站,广东,珠海,519015
摘    要:通过珠海保税区深厚软土地基中两根细长PHC管桩的水平荷载试验,分析了深厚软土地基中PHC管桩在水平荷载作用下的受力特点.试验结果表明:细长PHC管桩能够抵抗水平荷载的作用;弹性长桩的下端可以看成嵌固于土中而不能转动,由逐渐发展的桩截面抗矩和土抗力来承担逐渐增大的水平荷载;弹性长桩的受力性质主要受上部土层的影响.根据试验结果计算出来的水平地基抗力比例系数m的值对该类工程地质的桩基设计具有一定的参考价值.文中还采用通用有限元软件ABAQUS对PHC管桩的水平承载特性进行了模拟,计算结果能满足精度要求.

关 键 词:PHC管桩  水平荷载  静载试验  率定系数  软土地基  试验研究
文章编号:1000-565X(2007)07-0131-06
修稿时间:2006-09-04

Experimental Investigation into PHC Pipe Piles Under Lateral Load in Deep Soft Soil Foundation
Zhou Wan-qing,Cai Jian,Lin Yi-xi,Huang Liang-ji.Experimental Investigation into PHC Pipe Piles Under Lateral Load in Deep Soft Soil Foundation[J].Journal of South China University of Technology(Natural Science Edition),2007,35(7):131-136.
Authors:Zhou Wan-qing  Cai Jian  Lin Yi-xi  Huang Liang-ji
Institution:1. School of Architecture and Civil Engineering, South China Univ. of Teeh. , Guangzhou 510060, Guangdong, China; 2. Zhuhai Municipal Construction Engineering Quality Supervision and Test Station, Zhuhai 519015, Guangdong, China
Abstract:Based on the experimental results of prestressed high-strength concrete(PHC) pipe piles subjected to lateral loads in the deep soft soil foundation of Zhuhai free trade zone,the lateral bearing behaviors of the piles are discussed.The results show that the piles with high slenderness ratio can effectively bear the lateral loads,that the underside of the long elastic pile can be considered as a socking into the soil without rotation,the crescent resistance moment and the lateral soil pressure bearing the crescent lateral load,that the bearing capacity of the long elastic pile is mainly affected by the upside soil,and that the calculated proportional coefficient m describing the lateral resistance of foundation can be used as a reference for the design of the similar engineering.Moreover,according to the simulated results of the lateral bearing capability of PHC pipe piles via the finite element code ABAQUS,the high accuracy of the proposed method is finally revealed.
Keywords:PHC pipe pile  lateral load  static loading test  calibration coefficient  soft soil foundation  experimental investigation
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