Side wall assembly, roof assembly and vehicle body structure for railway vehicle

The invention discloses a side wall assembly, a roof assembly and a vehicle body structure for a railway vehicle. The side wall assembly comprises a first sectional material, the first sectional material is constructed to be of an arc-shaped structure and comprises a first face serving as the outer surface of the railway vehicle and a second face opposite to the first face, and the two ends of the first sectional material are provided with first protruding parts protruding out of the second face; the two ends of the stand column abut against the opposite faces of the two first protruding parts so that the shape of the first sectional material can be maintained, and loads from the outside can be borne in the vertical direction; wherein the first section bar comprises a single-layer section bar. 本发明公开了一种轨道车辆用侧墙总成、车顶总成及车体结构。侧墙总成，包括：第一型材，被构造成弧形结构，包括用作轨道车辆的外表面的第一面及与第一面向背的第二面，第一型材的两端设置有由第二面凸出的第一凸出部；以及立柱，立柱的两端抵接于两个第一凸出部的相面对的面上，以维持第一型材的形状，并沿竖直方向支承来自外部的载荷；其中，第一型材包括单层型材。