有限要素解析によるテルミット溶接部の補強方法の検討

抄録

We investigated the reinforcing method in order to prevent the breakage of thermite welds due to solidification cracking for rails. A finite element analysis model of the welds was developed and validated by comparing the results of loading analysis with an experiment of static bending tests. Using the analytical model, we evaluated the reduction effect of bending stress at the bottom of the rail by the reinforcing method and found that the conventional reinforcement fishplate for thermite welds reduced the bending stress by about 10%, while the new reinforcement method reduced it by about 80%.