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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。
In the literature [1], under the condition of pure torsion of rectangular cross-section members, a variable-angle space truss theory considering the softening of the crucible is proposed. This paper discusses how to apply the theory to the pre-stressed composite cross-section members under bending and torsion combined action to promote The scope of application of the theory. This paper derives the theoretical equations for calculating the ultimate strength of prestressed T-section members with bending and torsion through the conditions of internal force balance, strain coordination, and the stress-strain relationship of the material. The theoretical calculation results and the author’s experimental results [2] have been performed. Comparison is in good condition.