<p>图示结构用力矩分配法计算时，结点A的约束力矩(不平衡力矩)MA为: <img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/cd/e4/cde47df5b7da5d0cb1f3d30b32eed90d.jpg" style="width: 100%;height: auto;"><img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/21/ae/21ae916fec2db0806fe57338b5eca190.jpg" style="width: 100%;height: auto;"></p>