商丘文化艺术中心大剧院结构性能化设计

Structural performance design of Grand Theater of Shangqiu Culture and Art Center

商丘文化艺术中心大剧院存在扭转不规则、楼板不连续、竖向构件间断、存在局部穿层柱、斜柱等超限不规则项。针对结构体系的特点,给出了结构抗震性能化设计目标。详细介绍了商丘文化艺术中心大剧院抗震性能化设计方法和针对超限不规则项所采取的加强措施。对结构进行了反应谱分析、弹性时程分析和大震动力弹塑性分析,并对内外球结构、观众厅顶及主舞台顶桁架、舞台台口支承梁等重点部位进行了专项分析,结果表明结构满足抗震性能化设计目标的要求。

There are irregular torsion,discontinuous floor,discontinuous vertical components,partial cross-story columns, inclined columns and other out-of-code irregular items in Grand Theater of Shangqiu Culture and Art Center.According to the characteristics of the structural system,the structural performance-based seismic design objectives were provided.The performance-based seismic design method and the strengthening measures for the out-of-code irregular items of the Grand Theatre of Shangqiu Cultural and Art Center were introduced in detail.Response spectrum analysis,elastic time-history analysis and dynamic elasto-plastic analysis under rare earthquake were carried out.Special analyses were made on key parts such as inner and outer spherical structure,auditorium roof and main stage roof truss,stage mouth supporting beam, etc.The results show that the structure meets the requirements of performance-based seismic design objectives.