摘要
通过10个钢纤维高强混凝土三桩承台试验,结合对钢纤维高强混凝土三桩桩基承台受力性能的研究,对承台开裂荷载和极限承载力的主要影响因素混凝土强度、钢纤维体积率、承台有效厚度、配筋率及钢纤维类型进行了深入分析。研究表明:随着混凝土强度、钢纤维体积率、承台有效厚度的增加,三桩承台的承载力有明显的提高,同时配筋率和钢纤维类型对三桩承台承载力也有一定影响。研究成果对于建立钢纤维高强混凝土承台承载力计算公式,完善《纤维混凝土结构技术规程》具有重要意义。
By the experiments of 10 model specimens of steel fiber reinforced high strength concrete three-pile capst,he mechanical behavior and the important factors on the cracking load and ultimate bearing capacity of the steel fiber reinforced high strength concrete three-pile caps were studied.It indicates that with the increases of concrete strengtht,he volume fraction of steel fibert,he effective thickness and reinforcement ratio of pile capt,he bearing capacity of three-pile caps improves largely and the type of steel fiber has also remarkable effects on the bearing ca-pacity,which provides the experimental basis and the theoretic support for calculating load capacity.This achievement has a reference for the tech-nical specification for fiber reinforced concrete structure.
出处
《混凝土》
CAS
CSCD
北大核心
2011年第11期53-55,58,共4页
Concrete
基金
高等学校博士点基金项目(20060459005)
关键词
钢纤维
三桩承台
高强混凝土
承载力
影响因素
steel fibert
hree-pile caps
high strength concrete
bearing capacityi
nfluence effects
