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水电站副厂房是设置重要电气设备和工作人员工作的主要场所,其抗震安全性直接关系到整个电站的安全运行,以密松水电站副厂房为例,采用振型分解反应谱法对其结构进行抗震计算分析,给出了结构自振特性及在地震作用下的动应力、动位移,并采用最不利组合法将动力计算结果与静力计算结果进行叠加,对叠加后的结构应力及位移进行评估分析。结果表明,高地震烈度下,副厂房结构上部纵、横梁底部应力较大,建议在这些部位增大梁截面尺寸或加强配筋,以保证副厂房结构的安全运行。
The deputy factory building of hydropower station is the main place for setting the work of important electrical equipment and staff. The seismic safety of the hydropower station is directly related to the safe operation of the whole hydropower station. Taking the auxiliary workshop of Myisson Hydropower Station as an example, the vibration mode decomposition response spectrum method Computation and analysis, the natural vibration characteristics of structures and the dynamic and dynamic displacements under earthquake are given. The most unfavorable combination method is used to superimpose the dynamic and static calculations to evaluate the structural stress and displacement after superposition analysis. The results show that under the high earthquake intensity, the stress of the upper part of the auxiliary workshop structure and the bottom of the transverse beam are larger. It is suggested that the beam section size should be enlarged or the reinforcement should be strengthened in these parts so as to ensure the safe operation of the auxiliary workshop structure.