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五十年代以来,苏联混凝土及钢筋混凝土结构设计标准及技术规范НиТУ123-55,我国钢筋混凝土结构设计规范BJG21-66,对双向偏心受压构件均采用下列强度公式 N≤1/((1/(N_x)+1/(N_y)-1/(N_0))) (1) 七十年代初,我国现行钢筋混凝土结构设计规范TJ10-74,将(1)式修改为 KN≤(N_0)/((N_0x)/(N_x)+(N_x)/(N_y)-1)) (2)文献[4]根据国内外68个矩形截面对称配筋双向偏心受压构件试验资料的核算表明,(2)式可用于各种双向偏心受压情况。七十年代中期,国外文献[5]在叙述钢筋混凝土双向偏心受压构件极限强度一般性理论的
Since the 1950s, the design standards and technical specifications for concrete and reinforced concrete structures of the Soviet Union НиТУ123-55, and the design specifications for reinforced concrete structures BJG21-66 in China, have adopted the following strength formula for the biaxial eccentric compression members N≤1/((1/( N_x)+1/(N_y)-1/(N_0))) (1) At the beginning of the 1970s, China’s current design specification for reinforced concrete structures TJ10-74, revised formula (1) to KN≤(N_0)/(( N_0x)/(N_x)+(N_x)/(N_y)-1)) (2) Literature [4] According to the calculation of test data of 68 rectangular bisection symmetrical biaxial eccentric compressive members at home and abroad, (2) Can be used for a variety of bi-directional eccentric compression. In the mid-1970s, foreign literature [5] described the general theory of ultimate strength of reinforced concrete bi-directional eccentric compression members.