论文部分内容阅读
竖向荷载作用下框架梁的端弯矩可由框架内力分析时求出,但跨中最大弯矩和反弯点的位置却仍未知,即包络图不能得出。而配筋计算及钢筋的弯起和切断必须以包络图为依据。 包络图可用数解法求解。本文在数解法基础上用坐标图解法来对梁内最大弯矩及反弯点位置的确定进行分析,并提出新的简便的求最大弯矩值的计算公式。
The end bending moment of the frame beam under vertical load can be obtained by analyzing the internal force of the frame, but the position of the maximum bending moment and the anti-bending point in the midspan is still unknown, that is, the envelope diagram cannot be obtained. The calculation of reinforcement and the bending and cutting of reinforcement must be based on the envelope diagram. Envelope graphs can be solved using a numerical solution. Based on the numerical solution method, this paper analyzes the determination of the maximum bending moment and the position of the anti-bending point in the beam using the coordinate graph method, and proposes a new simple calculation formula for the maximum bending moment value.