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采用非线性有限元分析方法 ,对某电厂主厂房加固完成后的框排架结构在基础位移作用下的受力性能进行了非线性全过程分析 ,计算过程中考虑了混凝土的开裂、钢筋的屈服和塑性铰的形成等非线性特性及外包钢结构的二次受力特点 ,根据计算结果对主厂房结构的加固效果及其安全度进行了综合分析和评价 ,提出了主厂房结构达到临危状态的标志及相应时间的有关建议 ,可供电厂抗滑治理工作和临危预报参考。
Nonlinear finite element analysis is used to analyze the whole process of the mechanical behavior of the frame-supported structure under the action of the basic displacement after the reinforcement of the main building of a power plant. In the process of calculation, the cracking of the concrete, the yield of the reinforcement And the formation of plastic hinges and other non-linear characteristics of steel and outsourcing steel structure of the second force characteristics of the main plant structure based on the calculation results of the reinforcement effect and safety of a comprehensive analysis and evaluation of the proposed main plant structure reached a critical state The signs and the corresponding time of the relevant recommendations for anti-slip power plant management and risk forecast reference.