In order to study the mechanical properties of the large-gradient temporary steel trestle in the urban heavy traffic operation, the temporary steel trestle of the railway-related bridge project of Lixin Avenue was tak...In order to study the mechanical properties of the large-gradient temporary steel trestle in the urban heavy traffic operation, the temporary steel trestle of the railway-related bridge project of Lixin Avenue was taken as the research object, and the numerical model of the steel trestle was established by MIDAS/CIVIL software. The components of the steel trestle, such as Bailey truss beam, steel bridge deck and steel pipe pile, were analyzed under different vehicle load levels in the city, and the theoretical analysis of the abutment of the large-gradient steel trestle was carried out, and the bearing capacity, overturning resistance and sliding resistance were checked. The research results show that the internal force, stress and displacement of each member of the steel trestle can meet the operation requirements of large urban traffic flow;The design control factor of U-shaped steel rib composite steel bridge deck (spacing of 0.22m) is steel plate;The checking computations of concrete pile, steel pipe pile and abutment of steel trestle bridge can meet the driving requirements under the influence of gradient.展开更多
文摘In order to study the mechanical properties of the large-gradient temporary steel trestle in the urban heavy traffic operation, the temporary steel trestle of the railway-related bridge project of Lixin Avenue was taken as the research object, and the numerical model of the steel trestle was established by MIDAS/CIVIL software. The components of the steel trestle, such as Bailey truss beam, steel bridge deck and steel pipe pile, were analyzed under different vehicle load levels in the city, and the theoretical analysis of the abutment of the large-gradient steel trestle was carried out, and the bearing capacity, overturning resistance and sliding resistance were checked. The research results show that the internal force, stress and displacement of each member of the steel trestle can meet the operation requirements of large urban traffic flow;The design control factor of U-shaped steel rib composite steel bridge deck (spacing of 0.22m) is steel plate;The checking computations of concrete pile, steel pipe pile and abutment of steel trestle bridge can meet the driving requirements under the influence of gradient.
