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响洪甸坝是一座混凝土重力式拱坝,最大高度约80米。大坝的设计烈度为8度。为了了解大坝的抗震安全度,用反应谱法和振型迭加法对坝体的抗震强度进行了校核。根据动力分析所得到的最大总应力与坝体材料强度的比较,可以作出如下结论:大坝能够承受给定的设计地震荷载而不会发生严重的震害。
Ring Hongdian dam is a concrete gravity arch dam, the maximum height of about 80 meters. The dam’s design intensity is 8 degrees. In order to understand the seismic safety of the dam, the earthquake resistance strength of the dam was checked by response spectrum method and vibration mode superposition method. According to the comparison between the maximum total stress obtained from dynamic analysis and the strength of dam material, it can be concluded that the dam can withstand given designed seismic loads without serious earthquake damage.