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在我国最近十多年来,钢筋混凝土结构的计算理论和方法都有了很大的变化。解放前,都根据结构的弹性阶段按许可应力法进行计算。解放后,我们积极学习苏联的先进经验,在工业及民用建筑结构中,改为按破损阶段来计算结构的强度。1956年以后,更进一步采用了苏联在1955年正式颁布的按极限状态的计算方法,并且还参考苏联的规范,结合我国的具体条件分别编制了按极限状态计算的钢
In the last decade or more in China, the calculation theory and method of reinforced concrete structures have changed a lot. Before liberation, they were calculated according to the allowable stress method according to the structural elasticity phase. After the liberation, we actively studied the advanced experience of the Soviet Union. In the industrial and civil building structures, we calculated the strength of the structure according to the damage stage. After 1956, it further adopted the method of calculating the limit state officially promulgated by the Soviet Union in 1955. It also made reference to the Soviet Union’s regulations, and compiled the steel calculated according to the limit state according to the specific conditions in China.