大容量柔性直流换流站大跨度重型屋盖阀厅钢结构设计研究

The Design Study of Long Span Valve Hall with Heavy Roof of Large Capacity Flexible Direct Current Converter Station

厦门大容量柔性直流换流站阀厅为大跨度重型屋盖钢结构,由于阀厅结构的复杂性和重要性,采用Midas软件对结构进行建模、计算和设计。文章分析了阀厅结构的应力、变形及抗震能力。结果表明,该阀厅结构形式安全合理,满足规范和使用要求,具有良好的抗震性能。同时,计算结果显示,大跨度钢屋架采用重型屋盖时,竖向地震对结构的轴力影响较为显著,在构件设计时应特别注意。

A long span steel structure with heavy roof was adopted in the valve hall of Xiamen large capacity flexible direct current converter station. Due to the complexity and significance of the valve hall structure, Midas software was used to modeling, calculate and design the structure in this paper. Then the stress, deformation and seismic capacity of the valve hall were analyzed. The results show that the struc- ture of the valve hall is safe and reasonable, which can meet the requirements of the specification and use, and has excellent seismic performance. At the same time, the calculation results also show that Large span steel roof truss with heavy roof, the impact of vertical seismic for structure component axial force is significant.