针对适用于火电厂主厂房结构的煤斗调频减震设计方案，基于调频减震理论建立了减震结构的设计参数优化方法，并选取典型侧煤仓火电厂结构设计了4种煤斗减震结构模型，采用弹性时程分析方法研究了减震结构在53组地震动作用下的减震效果，最后考察了结构在Elcentro波作用下进入弹塑性阶段后的减震效果。结果表明：按调频减震参数优化方法设计的4种煤斗减震结构与常规结构相比都具有显著的减震效果，同时在结构进入弹塑性阶段后，煤斗减震结构仍能保持良好的减震效果，结构层间位移角和构件损伤程度都有明显降低，整体来说，煤斗调频减震技术将火电厂的抗震劣势转化为抗震优势，显著提升了火电厂主厂房结构的抗震性能，具有较好的应用前景。
Abstract
Aiming at the design scheme for coal-fired power plant building with coal bucket dampers, an optimization method of design parameters was established and four kinds of damping structure models were designed according to the optimization method.The shock absorption effect of the damper-added structures under the action of 53 groups of ground motions was studied using the elastic time history analysis.Finally, the shock absorption effect of the structures in the elastoplastic stage under the action of the Elcentro wave was investigated.The results indicate that the four coal-fired power plant structures with coal bucket dampers have a significant reduction effect on the structure response compared with conventional structures.The reduction effect maintains a certain stability even after the structures entering into the elastoplastic stage and the story drift and the damage degree of the structures are obviously reduced.Overall, the use of coal bucket dampers in power plants, which changes the aseismic disadvantages into aseismic advantage, significantly enhances the seismic performance of structures and has good prospects for application.
关键词
煤斗减震
/
火电厂 /
优化设计 /
减震效果 /
弹塑性分析
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Key words
coal bucket dampers /
coal-fired power plant /
optimal design /
seismic-reduced effect /
elastoplastic analysis
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