Car body structure

Abstract

A railway car is provided with superior riding quality by improving the flexural rigidity of the car body structure while suppressing increase of body structure mass. A reinforcing plate is attached to a roof construction on the side facing an inner side of the car body at a longitudinal center portion of a railway car body structure composed of a roof construction, a side construction, an underframe and an end construction. The range in which the reinforcing plate is adhered in the longitudinal direction of the railway car body structure is between two body bolsters, and the range in which the plate is adhered in the horizontal direction of the roof construction is approximately half the length of the roof construction in the horizontal direction. The thickness of the reinforcing plate is increased gradually as the height of the roof construction in the vertical direction increases.

1 . The car body structure comprising a roof construction or a side sill of an underframe having a higher rigidity at a portion between two body bolsters of the car body structure than the rigidity of the other portions of the roof construction or the side sill, wherein
 the thickness of the side sill at the portion between the two body bolsters of the side opposite from the outer side of the car body is increased by adhering a reinforcing plate to the side opposite from the outer side of the car body; and   the thickness of the reinforcing plate is increased gradually toward the lower end of the side sill.   
   
   
       2 . The car body structure according to  claim 1 , wherein
 the thickness of the reinforcing plate at the longitudinal center portion of the car body structure is increased gradually toward the lower end portion of the side sill.