摘要
本文根据两片配有直线预筋和四片弯起预筋的PPC T梁的试验结果,分析了预应力度和剪跨比(m)对梁斜截面抗裂性能和抗剪强度的影响。提出了既适用于直线预筋又适用于弯起预筋的PPC T梁、考虑m影响的斜截面开裂剪力的计算公式以及梁的斜截面抗剪强度的计算公式。试验值与计算值比较,符合良好。
Based on the test results of 2 PPC T-beams with straight tendons and 4 PPC T-beams with bent-up tendons, the effects of degree of stress (λ) and shear-span ratio (m) on diagonal cracking behaviour and shear strength are studied. Considering the effect of shear-span ratio (m), a formula for predicting the diagonal cracking shear is presented. It can be used to both the T-beams with straight tendons and with bent-up tendons. Another formula for calculating the shear strength of PPC T- beams with bent-up tendons is also proposed. The calculated values agree well with the test ones.
出处
《西南交通大学学报》
EI
CSCD
北大核心
1990年第2期70-78,共9页
Journal of Southwest Jiaotong University
