摘要
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。
The Steel-Reinforced Concrete Combined entire shearwall Structure, Steel-Reinforced Concrete Combined t-shaped section shearwall Structure and other Steel-Reinforced Concrete Structure of High Voltage Side Valve Hall in ±800 kV Converter Station are compared by seismic response spectrum analysis, elastic time-history analysis and elastic-plastic time-history analysis. The results show that longitudinal section firewall with T seismic wall hybrid structure whose transverse firewall disconnected to Valve Hall has high bearing capacity and good deformation in elastic and elastic-plastic stage which meets standard requirements. The torsion effects of other three structural models are remarkable and sensitive to disasters including earthquakes, especially strong earthquake which easily leads to brittle structure failure or collapse. The analysis results can provide technical guidance for structural selection of future UHVDC Converter Station Valve Hall.
出处
《中国电力》
CSCD
北大核心
2016年第8期36-40,共5页
Electric Power
关键词
阀厅
结构扭转效应
抗震设计
反应谱法
弹性时程分析
静力弹塑性分析
valve hall
seismic design
the torsional effect of the structure
response spectrum analysis
elastic time-history analysis
elastic-plastic time-history analysis
