Body bolster structure for railway vehicle, and railway vehicle

A bolster structure of a railroad vehicle that is provided on an underframe constituting a floor of a structure body of the railroad vehicle, comprising:

• a plurality of shaped members formed by joining the plurality of shaped members having a multi-layer structure in which a width direction of the structure body is an extrusion direction,
• wherein the plurality of shaped members include:
• a shaped member having a region in which a part of layers on an underframe side is notched at a center of the structure body in the width direction;
• and
• a shaped member including a fastening portion formed by notching a part of layers at both ends of the structure body in the width direction, and
• a side beam of the underframe is fixed by the fastening portion,
• wherein as the plurality of shaped members, those obtained by machining shaped members having the same cross-sectional shape are used,
• wherein the plurality of shaped members are joined side by side in a longitudinal direction of the structure body, and
• wherein among the plurality of shaped members, the shaped member located on an inner side of the structure body in the longitudinal direction includes a portion protruding upward from a joint portion, and the shaped member located on an outer side of the structure body in the longitudinal direction has a portion protruding downward from a joint portion.