拉弯扭共同作用下RC构件极限扭矩试验研究

根据８根钢筋混凝土拉弯构件扭强度的试验结果，对拉弯扭构件的破坏形态，纵筋及箍筋的应力应变规律等问题进行了分析研究。论文以变角桁架理论为基础，推导出拉弯扭构件相关方程，提出了在较大轴拉力情况下的计算拉弯扭构件极限扭矩的实用公式。

Experimental Research on Limit Torque of RC Members under the Combined Action of Axial Tension and Bending Twisting Moment

According to the experimental results of limit torque in eight RC structural members under the combined action of axial tension and bending twisting moment, the author studies the damage forms of the members, the stress strain variation law of the longitudinal and the crossed steels. Based on the theory of changeable angles in the truss, the author derives some relevant equations for the RC structural members under the combined action of axial tension and bend twisting moment. The auther also proposes a practical formula for calculating the ultimate torque of the members which is under the combined action of a comparatively large axial tension and bending twisting moment.