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如何判断弯矩的受拉方向

更新时间: 2020-10-13 00:00:00     

首先计算出控制点的剪力,然后再判断弯矩方向,若左顺右逆则,内侧受拉,若刚架竖直,只需旋转至水平即可。在内力分析时以顺时针为正。画出弯矩图均布荷载作用下是二次曲线,集中力作用时是斜线,弯矩作用时是直线,在直角坐标系中X表示截面位置,Y为该截面的弯矩值,然后计算即可。

关键词: 如何 判断 弯矩 方向

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