钢结构的历史展厅噫

This project is to increase the steel frames in the original rooms. Its construction area--about 961 square meters, the frame width--18m with a total of 4 rows steel columns; the frame length--53.4m with a total of 15 axes. The steel columns supporting the original wooden roof truss are newly added with bottom elevation of wooden frame girder --7.400m, top elevation of columns --7.200m. The steel mezzanine is located at the altitude of 3.830m and the concrete slabs are laid in the platform. The steel beam supporting is located at the elevation of 7.050m, with steel bearing connecting the beam supporting and the wooden roof truss. The total amount of steel construction is 200 tons and both the steel columns and steel beams use hot rolled H-shaped with material quality--Q235B. The columns and beams are welded and connected by 10.9 high strength bolts and the main beam and sub beams are connected by 10.9 high strength