（1 安徽建筑大学土木工程学院， 合肥 230601； 2 东南大学岩土工程研究所， 南京 210096）

［摘要］在假设桩体和桩周土体均服从莫尔\|库仑强度准则的前提下，采用FLAC-3D软件来研究钉形水泥土搅拌桩在桩顶荷载作用下桩身荷载的传递规律，并对其特征参数进行分析。结果表明：钉形水泥土搅拌桩桩身内力分三阶段衰减；单桩设计参数对其特征参数影响较大。在工程设计中应选择合理的单桩设计参数，使其特征参数控制在理想范围内。

［关键词］钉形水泥土搅拌桩; FLAC-3D; 荷载传递规律; 设计参数; 特征参数

中图分类号：TU472    文献标识码：A    文章编号：1002-848X(2014)14-0096-04

Load transmission law of T-shaped cement-soil mixing piles

Xi Peisheng1, Liu Songyu2

 (1 School of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China; 2 Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China)

Abstract: On the assumption that pile and its around soil are submit to Mohr-Coulomb strength criterion, FLAC-3D software was used to study the load transmission law of T-shaped cement-soil mixing pile under pile top loads. In the meantime, characteristic parameter of the pile was analyzed. Results show that internal force of T-shaped cement-soil mixing pile suffers from attenuation in three phases, and design parameters of single pile remarkably influence on its characteristic parameter. In order to control its characteristic parameter in reasonable interval, proper design parameters of single pile should be chosen in the design of the project.

Keywords: T-shaped cement-soil mixing pile; FLAC-3D; load transmission law; design parameter; characteristic parameter

作者简介：席培胜，博士，副教授，E-mail:xipeisheng@163.com。

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