And then , the structure ' s dynamic behavior has been investigated and calculated with spectrum and time - history methods , and obtained the conclusion that time - history method should be employed 接着采用反应谱法和时程分析法对该结构进行了动内力的计算,得到该结构受预应力索非线性的影响,宜采用时程分析法计算动内力的结论。
The seism response analysis of aqueduct bridge is analyzed with modal superposition method based on response spectrum which participant mode of vibration chooses the former 1 0 steps and combinatorial method was srss 渡槽的地震反应分析采用振型分解反应谱法,参与振型取前10阶,组合方法用srss法,求得结构的地震作用效应。
Nrs was strongly related to site conditions and depth , while the bnrs had better consistency among all strong motion records than the conventional nrs under the influence of site condition , depth and motion component 而不同场地不同深度不同分量方向的双规准反应谱之间差别甚小,双规准反应谱比规准反应谱表现出良好的一致性。