多点地震动输入下反应谱组合系数可以采用数值积分计算，但效率低下。
One can calculate response spectrum combination coefficient under multipoint earthquake motion input by numerical integration, but it has a low efficiency.
本文在输入地震动功率谱为c - P谱的假设下推导了计算组合系数的解析公式。
Analytic formulas for combination coefficients are deduced in this paper under the assumption that the input power spectrum is C-P spectrum.
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