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一、计算公式的特点钢筋砼双向偏心受压构件目前均按下列公式计算:KN≤N_0/((N_(0x)/N_x)+(N_(0y)/N_y)-1)(1)在构件截面已定的前提下,计算时需确定 A_g、A_(gx)和 A_(gy)得出相应的 N_0、N_(0x)/N_x 和N_(0y)/N_y,再代入式(1)验算;即计算公式的特点是:需同时确定钢筋用量(A(?))和布置(A_(gx),A_(gy))。只确定 A_(gx)与 A_(gy)的比而不确定具体布置仍不能得出结果(图1)。
First, the characteristics of the calculation formula Reinforced concrete biaxial eccentric compression members are currently calculated according to the following formula: KN≤N_0/((N_(0x)/N_x)+(N_(0y)/N_y)-1)(1) in the component Under the premise that the section is fixed, it is necessary to determine A_g, A_(gx), and A_(gy) to obtain the corresponding N_0, N_(0x)/N_x, and N_(0y)/N_y when calculating, and then substituting into the formula (1); That is, the calculation formula is characterized by the need to determine the amount of steel reinforcement (A(?)) and layout (A_(gx), A_(gy)). Only the ratio of A_(gx) to A_(gy) can be determined without deciding on the specific arrangement and the result cannot be obtained (Fig. 1).