Main researches are carried out as follows : experiments of the short columns under axial compression are carried out to investigate the mechanical properties such as the failure feature , ductility and the coordinated working performance . based on the test results , the formula for calculating the ultimate strength is established 进行了钢管高强混凝土核心轴压短柱的轴心受压试验，研究了其破坏特征、延性和钢混共同工作特性等力学性能，给出了其极限承载力的计算公式。
The paper detailed analyses the present strengthening methods according to the characteristics of power plant structures , and provides strengthening methods adapting to power plant structures according to the testing results of strengthening joints packed steel outside , and that of long column and short column , similarity , the difficulties calculating the column of boiler are analysed , and the solutions are provided 本文以河南平顶山姚孟电厂1 #机组的检测鉴定和加固为例，全面介绍电厂结构的检测鉴定情况。针对电厂结构的特点，对现有加固方法做详细分析，根据外包钢加固节点和长、短柱的试验结果，提出适用于电厂结构的加固方法。
