Assembly type structure major structure

The utility model discloses an assembly type structure major structure, assembly type structure major structure includes bottom basis, first supporting beam group, first combination beam slab and room top frame structure, bottom basis is including the bottom beam frame of rectangle, and first supporting beam group be including many first pillars, the lower extreme of every first pillar all with bottom beam frame fixed connection, first combination beam slab includes the light steel truss structure roof beam structure and the floor of fixed mounting on the light steel truss structure roof beam structure of rectangle, room top frame structure include the rectangle the chassis, perpendicular connect at the left triangle -shaped's of chassis first side bearer, perpendicularly connect at the triangle -shaped's on the right side of chassis second side bearer and be third side bearer and the fourth side bearer that the splayed set up, chassis fixed connection is on the light steel truss structure roof beam structure