摘要
在充分研究钻孔灌注桩桩径变异和上部结构活载、恒载变化对承载力影响的基础上，建立钻孔灌注桩极限承载力非线性状态方程，用改进一次二阶矩法进行可靠度分析和分项系数研究，比较了总安全系数与分项系数两种桩基设计方法的优劣。收集了上海及沿海软土地区48根钻孔灌注桩资料并进行电算，分析研究了可靠性指标与各主要参数的关系．
篋epending on analysing diameters of bored piles and values of the vertical dead load and live load respectively , more reliable estimates of statistical parameters about ultimate bearing capacity of bored piles are obtained based on the nonlinear limit state equation of bored piles. Comparison of total safety factor and partial factor for bored pile deign. Based on 48 bered piles in Shanghai area, relations have been analyzed on factors of bored piles related to reliability of bedaring capacity.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1998年第6期644-649,共6页
Journal of Tongji University:Natural Science
基金
上海市地基基础可靠度设计规范研究资助
关键词
钻孔灌注桩
承载力
可靠度
软土地区
Reliability
Partial factor
Total safety factor
Nonlinear limit state equation
