考虑负摩阻力发挥系数的桩基下拉荷载计算方法  

Calculation Method of Pile Pull-down Load Considering Negative Friction Coeffi cient

作　　者：黄杰卿 徐嘉潞 陈万里[1] HUANG Jieqing;XU Jialu;CHEN Wanli(Zhongtian Construction Group Co.,Ltd.,Hangzhou,Zhejiang 310008,China;Zhejiang Dadi Geotechnical Investigation Co.,Ltd.,Hangzhou,Zhejiang 310007,China;Watkinson School,Hartford,Connecticut 06105,USA)

机构地区：[1]中天建设集团有限公司,浙江杭州310008 [2]浙江大地岩土勘察有限责任公司,浙江杭州310007 [3]沃特金森学校,康涅狄格哈特福德06105

出　　处：《建筑施工》2020年第11期2172-2175,共4页Building Construction

摘　　要：基于浙江省工程建设标准DB33/T 1136—2017《建筑地基基础设计规范》提出的方法,根据实际工程的现场实测数据建立负摩阻力发挥系数与桩土相对位移的关系,对某实际工程桩基的下拉荷载进行计算分析。结果表明,传统方法可能会低估下拉荷载的大小。浙江省工程建设标准推荐的方法结合现场试验进行应用,即可较为合理地估算下拉荷载。Based on the method proposed in Zhejiang provincial engineering construction standard DB33/T 1136-2017"Code for design of building foundation",the relationship between negative friction coefficient and pile-soil relative displacement is established according to the field measured data of an actual project,and the pull-down load of pile foundation in a practical project is calculated and analyzed.The results show that the traditional method may underestimate the pull-down load.The method recommended by Zhejiang engineering construction standard combined with field test can reasonably estimate the pull-down load.

关 键 词：负摩阻力 发挥系数 桩基 下拉荷载 计算方法 

分 类 号：TU753[建筑科学—建筑技术科学]