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钢管混凝土结构介乎钢结构和钢筋混凝土结构之间,具有节省材料、施工简便等特点,最宜用来承受大压力的轴心受压构件。在我国也已开始逐步地得到推广使用。但到目前为止,国内外无论是强度和稳定的设计计算,还都采用半理论半经验的公式,对这种结构的工作特性和极限状态的理论上的论证和推导也都不够完善。本文采用了强度理论分析了轴心受压构什的极限状态,并用弹性理论方法推导了稳定承载力。初步推荐一些计算公式,并和国内外的试验实测结果作了对比,结果是十分接近的,因而可以采用。当然,我们的工作还很粗糙,一些观点和论证不一定完善,尚待令后深入研究和探讨。
The structure of concrete-filled steel tube is between the steel structure and the reinforced concrete structure. It has the characteristics of saving material and easy construction. It is most suitable for axial compression members that can withstand large pressure. In our country, it has also begun to be gradually used. But so far, no matter whether it is strength or stability in design calculations at home and abroad, semi-theory and semi-empirical formulas have been adopted. The theoretical argumentation and derivation of the working characteristics and limit states of this structure are also not perfect. In this paper, the strength theory is used to analyze the limit state of the axial compression structure, and the stable bearing capacity is derived using the elastic theory method. Some calculation formulas are initially recommended and compared with the test results at home and abroad. The results are very close and can therefore be used. Of course, our work is still very crude. Some viewpoints and arguments are not necessarily perfect. We will continue to study and discuss after the order.