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本文从对钢和钢筋混凝土两种材料制成的梁、板、框架等五种结构型式的动力测试数据出发,参考国外一些资料,直接对结构振动时1/4周耗能值作了假设。其系数为自振耗能系数S_(01)、基频参数η_1和高频参数φ_i的乘积。根据自由振动衰减曲线确定了S_(01)按强迫振动试验数据的回归分析和综合整理确定了η_1和φ_i。按能量耗散相等原则,各系数均可折算至现有各种方法的相应系数上。通过二个例题计算表明,按本方法计算,较符合试验结果。
Based on the dynamic test data of five kinds of structures, such as beams, plates and frames made of steel and reinforced concrete, with reference to some foreign data, the assumption of quarter-cycle energy dissipation of the structure is directly made. The coefficient is the product of natural energy dissipation coefficient S_ (01), fundamental frequency parameter η_1 and high frequency parameter φ_i. According to the free vibration decay curve, the regression analysis and compilation of S_ (01) according to the forced vibration test data were performed to determine η_1 and φ_i. According to the principle of equal energy dissipation, all the coefficients can be converted to the corresponding coefficients of the existing methods. Calculated by two examples show that, according to the method of calculation, more in line with the test results.