某大型火电厂主厂房钢框排架结构的静力弹塑性分析

Static elastic-plastic analysis of steel frame-bent structure of a main power plant house

火电厂作为重要的电力设施和生命线工程,应具有良好的抗震性能.钢框排架火电厂主厂房结构和设备布置极不均匀,有必要进行大震作用下的变形分析.利用SAP2000软件对某大型火电厂主厂房钢框排架进行了静力弹塑性分析,并与试验结果进行对比.通过对振型参与系数,性能点及塑性铰状况的分析,表明在8度多遇和8度罕遇地震作用下,结构满足弹塑性变形的要求,并对火电厂主厂房的设计提出了一些建议,以供类似工程参考.

As important electric power facilities and life-line engineering, power plant should have considerable seismic performance The structure and equipment layout of the main powerhouse of a power plant are very uneven, so it is necessary to analyze the deformation under rare earthquake. In this paper, the steel frame-bent structure of a main powerhouse of large power plant is analyzed by Push-over method using SAP2000 program and compared with the experimental results. By analyzing modal participation factors, performance point, and plastic hinge, it is shown that the structure system meets the elastic-plastic deformation on 8 degree earthquake. Some suggestions may serve as reference in the design of this kind of structures.