框架承担倾覆力矩的合理计算方法

Reasonable calculation method of bearing overturning moments of frames

为理清框架倾覆力矩的相关概念区别,并给出各自合理计算方法,对计算框架、支撑、框架+支撑、局部框架或者局部框架+支撑倾覆力矩的统一解法进行总结,给出相应的力学法。指出框架倾覆力矩和框架承担倾覆力矩之间的显著区别,给出两者的异同以及建筑结构中框架承担倾覆力矩的计算原则,并进一步给出合理计算框架承担倾覆力矩的方法,即修正的统一解法。修正的统一解法适用于一般建筑结构和带竖向构件转换的结构,也适用于带伸臂框架-核心筒结构。最后对典型结构算例的框架承担倾覆力矩进行计算分析,结果合理可行。

In order to clarify some concept difference of frame overturning moment and to give a reasonable calculation method for each of them,the unified solution method was summarized to calculate the overturning moment of frames,braces,frames+braces,partial frames or partial frames+braces,and the corresponding mechanics method was given.The significant difference between the frame overturning moment and the frame bearing overturning moment was pointed out,the similarities and differences between them,as well as the calculating principle of the frame bearing overturning moment in a building structure were given,and the method of calculating the frame bearing overturning moment was given further,that is,the modified unified solution method.The modified unified solution is applicable to general building structures and structures with vertical member transitions,as well as to frame-tube structures with outriggers.Finally,the calculation and analysis of the frame bearing overturning moment of typical structural example were carried out,the results are reasonable and feasible.