蒸汽发生器下部水平支承改进型缓冲结构刚度性能试验

Experiment on Structural Stiffness of Energy Absorbing Device in Steam Generator Lower Horizontal Support

介绍核电厂蒸汽发生器(SG)下部水平支承改进型缓冲结构,以及截面尺寸为10 mm×10 mm缓冲结构的刚度试验选材、试验设备、载荷施加方式等,并对缓冲结构刚度试验的结果进行处理,得到此改进型缓冲结构在不同区间内的加载载荷与位移之间的关系式、对应的弹塑性区的刚度值以及加载载荷与残余变形之间的变化曲线。

The 10 mm×10 mm energy absorbing device used for steam generator lower horizontal support, and its stiffness experiment, including material selection, experimental scheme, equipments and load exerting are briefly introduced. Then, the formulas of the load exerting vs displacement for the energy absorbing bar are formulated, and the experimental stiffness of the energy absorb device in the region of elastic and ductile are deduced from the formulas. Also, the curve of the load exerting vs residual displacement for the energy absorb device is obtained by the experimental data. All of which provide lots of conveniences for the energy absorb device used in steam generator lower horizontal support.