[Bracing rod reinforcement method under prestress]
Steel structure reinforcement is under the action of outer load and prestressed, transfer the axial force of the pull rod to reinforce the artifacts, this is part of the external load, the reinforced concrete beam based on component and the combination of the support bar structure, improve the bearing capacity of the component, this method can reduce the stress level of reinforced components, not only improves the reinforcement effect, also increase the bearing capacity.
[Auxiliary reinforcement]
The steel structure uses other auxiliary components, such as section steel, steel truss or reinforced concrete beam, to share part or all of the load of the strengthening beam. After the reinforcement near the support, the effective height of the section near the support is improved, and the flexural and shear resistance of the support is improved.
[Support reinforcement method]
The connection mode of steel structure should be determined according to the reason, purpose, hand state and construction conditions of steel structure, the connection mode of welding, rivets, ordinary bolts and high-strength bolts, considering the original connection mode of the structure. Steel structures are generally welded and friction-type high-strength bolts, and can also be welded and high-strength bolts when there is a foundation.
[Seismic strengthening method]
Due to the expansion of the building, it is necessary to increase the corresponding load in the original mechanism, which is a very severe test to the stability of the building structure. The building is located in the steel structure fault zone, which requires high stability of the building in the earthquake-prone area. Through seismic reinforcement, the bearing capacity and seismic strength of buildings can be improved effectively, and the damage of buildings in earthquake disasters can be reduced.
[Reinforcement design of structural joints]
The reinforcement design of the structural joints is very important for the safety of direct piping to the structural components and even the entire steel structure. In this building, the protective layer of the concrete of the original capital was removed from the original roof because the original capital did not have sufficient length of steel bars for welding. Since the section of the new column is the same as that of the bottom round column, the reinforcement method is adopted to drill the reinforcement holes in the longitudinal reinforcement position of the new column.
Steel structure reinforcement pays special attention to, the above several steel structure reinforcement methods are only for reference, but make the steel structure safe use, to ensure that the use of steel structure can meet the strength requirements.
