预应力混凝土调压塔抗震分析

Antiseismic Analysis on Prestressed Concrete Surge Tank

本文结合小浪底水电站初步设计阶段方案比较中的预应力混凝土调压塔方案,进行了多种计算方法的抗震分析,并评价了各种方法的计算条件及其计算结果的合理性。分析结果表明。反应谱分析法,计算结果比较合理;同时还进一步证明预应力混凝土结构型式的调压塔不仅抗渗、抗裂安全性能强,而且具有较强的抗震性能。

The paper conducts antiseismic analysis on various methods of calculation and evaluates calculationconditions in various methods and the rationality of the calculation results in the light of prestressed concretesurge tank scheme of alternatives in the preliminary design stage of the Xiaolangdi Hydro-electric Powerstation.The results shown that the calculation result of reaction spectrum analytical method is fairly reason-able;the surge tank of prestressed concrete structure type not only has strong performances of impermeabili-ty and safety against cracking,but also has the performance of earthquake-resisting.