论文部分内容阅读
通过振型分解反应谱法(CQC法)、弹性时程分析法和静力弹塑性法等方法对独立布置的±800 kV换流站高端阀厅采用钢-钢筋混凝土全抗震墙、钢-钢筋混凝土T型截面抗震墙等几种混合结构进行深入的抗震设计研究和结构抗震性能分析对比。结果表明,除与横向防火墙脱开布置的纵向T型截面抗震墙混合结构在弹性和弹塑性阶段具有良好的承载和变形能力,其各项指标均符合规范要求外,其他3种结构模型的扭转效应都比较显著,当地震等灾害来临时,其反应尤为敏感,特别是在强震时,容易引起结构的脆性破坏,严重者甚至会使阀厅结构整体倒塌。从抗震角度,提出±800 kV换流站独立布置的高/低端阀厅采用钢-钢筋混凝土混合结构选型建议,为后续特高压直流工程换流站阀厅结构抗震设计提供参考。
Through the method of mode decomposition decomposition (CQC), elastic time history analysis and static elasto-plastic method, the independently installed high-end valve hall of ± 800 kV converter station adopts steel-reinforced concrete anti-seismic walls, steel- Concrete T-section seismic walls and several other hybrid structures in-depth study of seismic design and structural seismic performance analysis and comparison. The results show that, except for the longitudinal T-shaped cross-section seismic wall hybrid structure which is separated from the horizontal firewall, it has good bearing and deformation capacity in the elastic and elastoplastic stages, and all the indexes meet the requirements of the specification. The torsion of the other three kinds of structural models When the earthquake and other disasters come, the response is particularly sensitive. Especially in strong earthquakes, it is easy to cause brittle failure of the structure. In severe cases, the whole structure of the valve hall will collapse as a whole. From the point of view of anti-seismic, it is proposed that the high / low-end valve hall with independent arrangement of ± 800 kV converter station should adopt steel-reinforced concrete mixed structure selection suggestion to provide references for the seismic design of the valve hall structure of the converter station of UHVDC project.