桥梁用钢示波冲击试验

Instrumented Impact Test of Steel Used for Bridge

通过桥梁用钢示波冲击试验讨论了区分Wi、Wp与Wt的意义及其三者之间的关系,分析了试样的取样方向和试验温度对Wi、Wp与Wt值及其之间关系的影响。结果表明,L-T方向取样试样的Wt、Wp值均较大,Wi值变化没有规律性。Wp与Wt呈线性关系,不随试验温度和取样方向的改变而改变。Wt、Wp值随试验温度的降低而减小,Wi/Wt值随试验温度的降低而增加,均小于50%。

The significance on distinguishing W, Wp, Wt and their relationships by instrumented impact test were discussed. The effects of sampling direction and test temperature on W, Wp, W and their relationships were ana- lyzed. The results show that the Wt and Wp of L-T sampling direction are higher, and W change is not regularly. The relationship between Wp and Wt is linear and varies with the temperatures and sampling directions. The Wt and Wp decrease and the W/W, increases in the 50//00 with the decrease of temperature.