摘要
钢纤维自应力混凝土是一种具有很高抗拉强度的新型结构材料,将其应用到水电站钢衬钢筋混凝土压力管道中,可以明显地改善管道的抗裂能力.通过一系列大比尺管道试验,对比了钢衬钢筋混凝土压力管道、钢衬钢纤维混凝土压力管道、钢衬钢纤维自应力混凝土压力管道抗裂性能.试验结果表明,钢纤维自应力混凝土能够明显地提高压力管道的抗裂承载力.依据试验结果并结合理论推导,给出了钢衬钢纤维自应力混凝土压力管道开裂荷载的计算公式.
Steel fiber reinforced self-stressing concrete is a new structural material with a high tensile strength. When using it on the steel-lined penstocks of hydroelectric station, the cracking-resistant strength of the penstock can be significantly increased. A series of the large-scale experiments on steel-lined reinforced concrete penstocks were carried out to compare the cracking-resistant capacities of conventional steel-lined conventional reinforced concrete penstock, steel-lined steel fiber reinforced concrete penstock and steel-lined steel fiber reinforced self-stressing concrete penstock. The experimental results show that steel fiber reinforced self-stressing concrete can significantly increase the cracking load of penstock. According to the test results and based on the mechanical analysis, a method on cracking loading of steel-lined steel fiber reinforced self-stressing concrete penstock is proposed.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2006年第2期257-261,共5页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目(59879001)
关键词
开裂
钢纤维
膨胀
自应力
管道
cracking
steel fiber
expansion
self-stress
penstock
作者简介
何化南（1972-），女，博士，讲师，
黄承逵（1943-），男，教授，博士生导师．
