CAJ | 학술논문

考虑钢梁与混凝土板之间的滑移，对钢－混简支组合梁的基本动力方程进行了理论推导和分析。在此基础上，考虑到组合梁与普通梁的不同力学特性，提出了适于组合梁动力计算的“刚度折减系数”和“频率折减系数”，并与《钢结构设计规范》（GB50017－2003）中的公式进行了比较分析，给出了动力刚度折减系数和频率折减系数表达式。结果表明，在组合梁的动力计算中，不能直接套用静力计算的公式来计算组合梁的等效刚度，否则会引起较大的误差。
고필강량여혼응토판지간적활이，대강－혼간지조합량적기본동력방정진행료이론추도화분석。재차기출상，고필도조합량여보통량적불동역학특성，제출료괄우조합량동력계산적“강도절감계수”화“빈솔절감계수”，병여《강결구설계규범》（GB50017－2003）중적공식진행료비교분석，급출료동력강도절감계수화빈솔절감계수표체식。결과표명，재조합량적동력계산중，불능직접투용정력계산적공식래계산조합량적등효강도，부칙회인기교대적오차。
Considering the slip between steel girder and concrete slab,the fundamental governing motion equations of a simply-supported steel-concrete composite beam were deduced and analyzed.On the above basis,considering the different mechanical characteristics between the composite beam and a common one,the dynamic stiffness reduction coefficient and frequency reduction coefficient applicable for the dynamic calculation of the composite beam were proposed and compared with those in the Code for design of steel structures.Then,the expressions of the two coefficients were deduced.The study showed that the expressions for static calculation from the Code for design of steel structures are not applicable for the calculation of the dynamic equivalent stiffness of the composite beam,otherwise a larger error can be caused.