【摘要】 文献[1]就矩形截面构件受纯扭作用情况下,提出了考虑砼软化的变角度空间桁架理论,本文探讨如何将此理论推广应用于弯扭复合作用下的预应力组合截面构件,以推广该理论的适用范围。本文通过内力平衡条件、应变协调条件、材料的应力-应变关系,推导了计算弯扭作用预应力T形截面构件极限强度的理论方程,并将理论计算结果与作者的试验结果[2]进行了比较,符合良好。更多还原

【Abstract】 In reference [1].a variable angle space truss model theory considering the softening of concrete was proposed. In this paper, the authors’discuss how to extend this thory to include Pre-stressed T-beams subjected to combined torsion and bending. A set of theoretical equations is developed to calculate the ultimate strength for such beams. The comparision of theoretical predictions to the experimental results shows good agreement.更多还原