摘要
基于各国混凝土梁的斜截面抗剪试验结果,对中国《混凝土结构设计规范》(GB 50010—2002)与美国ACI 318M—05规范的钢筋混凝土梁斜截面受剪承载力计算方法进行了分析对比,并对最大和最小配箍率也进行了对比。结果表明,美国规范受剪承载力计算公式的保证率比中国规范大,且两国规范公式保证率的差距随配箍特征值的增大而增大。通过比较得出,中国规范受剪承载力计算还存在一些不足之处,需要进一步完善。
A comparison of shear strength calculation method of RC beams was studied between Chinese Code for Design of Concrete Structures （GB 50010-2002） and American Code ACI 318M-05 based on the test results in the literatures available in China and abroad. The maximum and minimum transversal reinforcement ratios specified in both codes were also compared. The results show that the assurance percentage of shear strength of American code is more reliable than Chinese code, and the difference of assurance percentage of Chinese code and American code is greater with the stirrup amount. It is indicated that there are some unreasonable problems for shear strength calculation in Chinese code, and the modification should be further adopted.
出处
《建筑科学与工程学报》
CAS
2008年第1期88-95,共8页
Journal of Architecture and Civil Engineering
基金
教育部高等学校科技创新工程重大项目培育资金项目(704003)
关键词
钢筋混凝土梁
斜截面
受剪承载力
保证率
折减系数
最大配箍率
最小配箍率
reinforced concrete beam
oblique section
shear strength
assurance percentage
reduction factor
maximum transversal reinforcement ratio
minimum transveral reinforcement ratio
