Analysis of Crack Patterns of 500MPa Reinforced Concrete Beams
Fourting concrete beams reinforced with 500MPa longitudinal steel bars,of which 6 with skin reinforcement and 8 without skin reinforcement,were tested under two-point symmetrical concentrated static loading to investigate their crack patterns.Crack distributions in constant moment region of beams are compared.The propagation of side cracks along the beam depth is obtained.The results of this study indicate that the concrete cover of longitudinal tensile steel bars and the spacing of skin reinforcement has significant effect on crack distributions; substantial crack control in beams can be achieved if the spacing of skin reinforcement is limited to certain critical values.The curve of d-w(d is the distance between observation points of side cracks and tension face of beams,w refers to crack width at observation points) is approximately characterized by a zig-zag shape and concave-left near longitudinal tensile steel bars.
reinforced concrete beams high-strength bar crack pattern skin reinforcement
Zhihua Li Xiaozu Su
Building Science and Engineering College,Yangzhou University,Yangzhou 225127,P.R.China School of Civil Engineering,Tongji University,Shanghai 200092,P.R.China
国际会议
西安
英文
501-505
2013-07-27（万方平台首次上网日期，不代表论文的发表时间）