摘要
本文通过对十二根钢筋砼简支短梁的试验研究,深入分析了均布荷载作用下其斜向开裂特点、平均裂缝宽度及其受剪性能。着重研究了跨高比、分布筋配筋方式和分布筋配筋率对斜截面受剪承载力的影响。最终在试验研究和电算基础上,提出了均布荷载作用下钢筋砼简支短梁斜截面受剪承载力计算公式。
This paper is written under the scientific test results of twelve simply supported RIC short beams, in which the diagonal cracking, average diagonal width and shear behavior of specimen are carefully analysed. The effects of span-depth ratio distributing reinforcement mode and its ratio on shear strength are studied. Based on the truss theory with rariable angle and softenig effect of concrete, calculation model are presented. With the help of the theory, the main factors influencing shear strength are analyzed by compu- ter. The computed results were in good agreement with the test data. Based on the experimental and the theoretical studies, the formulae and upper li- mit of shear strength of simply supported RIC short beams under uniform loa- ding are proposed.
出处
《山东建筑大学学报》
1991年第1期17-23,共7页
Journal of Shandong Jianzhu University
关键词
简支短梁
变角桁架理论
跨高比
均布荷载
软化
受剪承载力
simply supported short beams
truss theory with variable angle
span-depth ratio
uniform loading
softening
shear strength
