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首先完成了地基、基础与上部框架的有限元耦合。在考虑联合作用的基础上 ,分析了弯矩调幅系数ζA(框架上部调幅系数 )、ζB(框架下部调幅系数 )对框架产生塑性铰的影响 ,探讨了弯矩调幅系数与框架极限承载力的关系。结果表明 ,通过调整弯矩调幅系数ζA 和ζB的值 ,可改变塑性铰的位置及出铰荷载 ,并可寻求一组最优的ζA 和ζB,使框架的极限荷载相对较高
First completed the foundation, foundation and the upper frame of the finite element coupling. On the basis of considering the combined effect, the influence of the amplitude modulation coefficient ζA (upper part of the frame) and ζB (lower part of the frame) on the plastic hinge of the frame is analyzed. The relationship between the moment modulation amplitude coefficient and the ultimate bearing capacity . The results show that by adjusting the values of ζA and ζB, the hinge position and the output hinge load can be changed, and an optimal set of ζA and ζB can be found to make the ultimate load of the frame relatively high