摘要
当桥梁较长时,不计行波效应和相干效应计算地震反应是不明智的。通过选择合适的参数,时间历程法能得到与反应谱法相近的结果。如忽略行波效应和空间效应,计算结果可能大于或小于一致激励结果。至于多长桥梁需考虑行波效应和相干效应,通常由场地类型和设计经验决定。
It is unwise to evaluate earthquake response without considering the spatial and time effect when the continuous beam bridge is long enough.By means of choosing appropriate parameters,the result of time history method is similar to the ones of response spectrum method.If the spatial and time effect is ignored,the result is probably bigger or smaller than the result calculated by consistent stimulation.As to how long the bridge should be considered the spatial and time effect,it usually is decided by field site style and the design experience.
出处
《工程抗震与加固改造》
北大核心
2011年第6期125-127,115,共4页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金(50978232)
关键词
地震
反应谱法
时间历程法
行波效应
相干效应
earthquake
response spectrum
time history method
traveling wave effect
coherence effect
