摘要
本文通过大比例尺模型试验、工程实测结果对基础筏板中的应力进行分析,指出在上部结构-地基-基础(桩基)共同工作下基础筏板钢筋的实测应力值与设计值(容许应力值)存在显著差异。结合工程实例,对影响基础底板钢筋应力实测值偏小的原因及影响程度进行分析,指出现有计算方法的不足并提出一些筏板设计的简便切实可行的改进建议。
The field experimental results for large scale structure-soil-foundation models show that there is a remarkable difference between the experimental stress and design stress（allowable stress） of steel bar in foundation slab,based on an analysis of the results of large scale model tests and in-situ measurement.A case study is taken as an example to analyze all factors and extents affecting the steel bar stress in foundation slab.The drawbacks of current calculation methods are pointed out,and simple,convenient and feasible suggestions presented.
出处
《土木工程学报》
EI
CSCD
北大核心
2010年第8期109-114,共6页
China Civil Engineering Journal
基金
建设部科技项目(97-07-02)
"十一五"国家科技支撑计划课题(20070106110131016)
关键词
基础筏板
钢筋应力
共同作用
变刚度调平设计
foundation slab
steel bar stress
interaction
optimized design of pile foundation stiffness to reduce differential settlement
