位移型耗能减震结构对框架柱轴力影响的研究
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摘要
分别对框架结构中安装耗能减震装置前后进行了水平地震作用的推覆分析,揭示了由于耗能支撑的安装使框架柱轴力明显增加这一现象。这种轴力的增加,可能会超过柱轴力设计允许值。提出了验算耗能支撑带给框架柱附加轴力的计算方法及验算过程,同时改进了耗能减震结构的设计流程,使得耗能减震技术进一步完善。数值算例揭示了耗能支撑的安装对框架柱轴力的影响,轴压比过大引起框架柱延性降低,柱端过早出现塑性较,设计中应引起足够的重视。
A steel frame with and without dissipative devices subjected to horizontal earthquake-force was calculated by SAP2000-NL software. Increase on axial force of the column was discovered due to the dissipative devices fitted in the frame.Calculated and verified method about the axial force of the column were presented.A new design procedure was perfected.Simulated example gave an explanation on the influence of column on the dissipative buildings.
A steel frame with and without dissipative devices subjected to horizontal earthquake-force was calculated by SAP2000-NL software. Increase on axial force of the column was discovered due to the dissipative devices fitted in the frame.Calculated and verified method about the axial force of the column were presented.A new design procedure was perfected.Simulated example gave an explanation on the influence of column on the dissipative buildings.
引文
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[4]张国镇,黄震兴,苏晴茂,等.结构消能减震控制及隔震控制[M].台湾:全华科技图书股份有限公司,2002.
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