CAJ | 학술논문

以纤维法算出不同轴力下双工字型钢混凝土方形柱截面主轴和与主轴任意夹角方向的抵抗弯矩值，以这些数据为基础，用幂函数拟合等轴力时双向偏心受压柱承载力极限曲线，再用三次多项式拟合不同轴力时截面主轴抵抗轴力-弯矩关系，从而得到三维空间的双工字型钢混凝土方形截面双偏压承载力极限曲面。在计算机中建立相应的数据库，可实现双偏压作用下双工字型钢混凝土方柱承载力的快速计算。
이섬유법산출불동축력하쌍공자형강혼응토방형주절면주축화여주축임의협각방향적저항만구치，이저사수거위기출，용멱함수의합등축력시쌍향편심수압주승재력겁한곡선，재용삼차다항식의합불동축력시절면주축저항축력-만구관계，종이득도삼유공간적쌍공자형강혼응토방형절면쌍편압승재력겁한곡면。재계산궤중건립상응적수거고，가실현쌍편압작용하쌍공자형강혼응토방주승재력적쾌속계산。
Based upon the bending moments of steel reinforced concrete(SRC)section in any angle eccentricity calcu-lated by the fiber method,an exponent fitting method was presented to evaluate the interaction curve at a particular axial load and any angle of eccentricity of SRC columns. A three-order polynomial was used for fitting the relationship between axial load and bending moment. And the critical surface in three-dimensional space was obtained for the SRC section with cross-H type steel under biaxial compression. The corresponding database was set up in computer,so the bearing capacity of the SRC column with cross-H type steel under biaxial compression can be quickly calculated.