摘要
本文根据9片PPC无箍筋约束箱梁的试验结果,描述了试验梁斜裂缝出现、开展和剪力破坏的特征,分析了预应力度和剪跨比对斜截面抗裂性和抗剪强度的影响,提出了PPC无箍筋约束箱梁斜裂剪力和抗剪强度的计算公式,可供修订《铁路桥规》时参考。
Based on the test results of 9 restrained PPC box girders without stirrups, the characteristics of diagonal cracking and shear failure are described, and the effects of the degree of prestress and shear- span ratio on both diagonal cracking behaviour and its shear strength also analysed. The empirical formulae presented for calculating diagonal cracking shear and shear strength could be of value in revising the 《Railway Bridge Code》.
出处
《西南交通大学学报》
EI
CSCD
北大核心
1990年第2期14-22,共9页
Journal of Southwest Jiaotong University
基金
铁道部建设司关于基于可靠性理论的桥规修改科研课题--抗剪极限状态设计计算方法专题的一部分
