柔性直流换流站阀厅常常采用大跨度钢结构，由于阀厅结构的复杂性和重要性，应对其竖向地震响应进行分析。依托厦门柔性直流换流站工程，采用弹性时程分析法对大跨度阀厅结构的竖向地震响应进行计算分析。结果表明，不同于水平地震，竖向地震对阀厅屋盖弦杆及钢柱的轴力影响较大，其对重型屋盖阀厅结构的影响比轻型屋盖阀厅结构更为显著。此外，通过对不同跨度的重型屋盖阀厅钢结构在不同场地类别下的竖向地震响应的试算，推荐该类结构在7度0．15g时竖向地震影响系数可偏安全的取0．08。%Steel structure with large span is normally adopted for the valve hall of the Voltage source converter-high voltage direct current ( VSC-HVDC) converter station. Due to the complexity and significance of the valve hall structure, analysis towards its vertical seismic re-sponse should be conducted. Based on Xiamen VSC-HVDC project, Elastic time-history analysis is used to calculate and analyze the ver-tical seismic response of the large span valve hall structure. The results indicate that, unlike horizontal earthquake, vertical earthquake has greater impact on the axial force of the chord member and steel column in the valve hall roof system, such impact is more significant on the heavy roof valve hall structure than that on the light roof valve hall structure. Furthermore, based on the calculation and comparison of the vertical seismic responses of heavy roof valve hall structures in various spans and site categories, it is recommended that 0. 08 should be taken as the vertical seismic coefficient for this type of the structure when the seismic fortification intensity is 7 and the acceleration is 0. 15g.
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