摘要
以新版英标BS 8004∶2015中关于钻孔灌注摩擦桩竖向承载力的计算方法为研究对象,通过分析BS 8004∶2015使用时存在的问题,提出一种N_q值的计算公式与极限端阻力的厘定方法,并结合荷载分项系数进行算例对比。结果表明:1)推荐的N_q值的计算公式是便捷合理的;2)《公路桥涵地基与基础设计规范》与BS 8004∶2015的安全性地位是相当的。
Taking the calculation method of vertical bearing capacity of bored cast-in-place friction pile in the new British standard code of practice for foundations(BS 8004:2015) as the research object,through the analysis of the problems when using the BS 8004:2015,a calculation formula of N_q value and the determination method of ultimate tip resistance are proposed,and the calculation example is compared with the partial coefficient of load. The results show that:1)The calculation formula of N_q value recommended in this paper is convenient and reasonable;2)The safety status of the Code for design of ground base and foundation of highway bridges and culverts and BS8004:2015 is equivalent.
作者
张曦霖
Zhang Xilin(Bridge and tunnel Institute,CCECC Fuzhou Survey&Design Institute Co.,Ltd.,Fuzhou 350013,Fujian)
出处
《工程建设》
2020年第6期34-40,共7页
Engineering Construction
关键词
桥梁工程
钻孔灌注桩
桩端阻力
极限状态对比法
bridge engineering
bored cast-in-place piles
pile tip resistance
limit state comparison method
