The main factors of steel structure damage are as follows

1) The structural bearing capacity is insufficient due to load change, extended service, code and regulation change;

2) Due to various kinds of accidental deformation, distortion, disability, depression and so on, the cross section of the component is weakened, the rod is warped, and the connection is cracked;

3) Deformation, cracking and warping of components or connections are caused by temperature difference;

4) Due to the corrosion of chemical substances and electrochemical corrosion, the section of steel structure members is weakened;

5) Others include mistakes in design, production and construction, and illegal use and operation during service.

Dalian Guangtong Steel Structure Co., Ltd. produces steel structure products with light weight, good toughness, good seismic performance and rich resources. The high value of source recycling is known as reusable and environmentally friendly green building. Nowadays, people's acceptance of steel structure buildings is increasing year by year, and the scope of use is becoming wider and wider. It can meet the needs of the development of modern architecture in many aspects, and can meet the requirements of people's future production and life.

After the workshop steel structure has been used for a long time, in order to ensure the firmness of the workshop steel structure itself, it is necessary to comprehensively check the strength and stiffness of the whole structure. If it is found that the steel structure of the workshop has changed, the steel structure reinforcement measures must be strengthened.

Reinforcement of steel structure of load bearing workshop

Compared with other reinforcement methods, the steel structure strengthened with load is more convenient, economical and practical. This method is mainly suitable for workshop steel structure whose member stress is less than 80% of the steel design strength.

Workshop steel structure reinforcement

The unloading reinforcement of workshop steel structure is suitable for the situation where the steel structure itself is seriously damaged or the stress state of the steel structure and its connecting parts is high, and the unloading load of workshop steel structure needs to be temporarily reduced.

Workshop steel structure foundation reinforcement

The method of strengthening the steel structure foundation of workshop is mainly suitable for the situation that the workshop structure is seriously damaged or the bearing capacity of the original section is too small. We have to set one or more temporary support points on the ground to reinforce or update the steel structure of the workshop, so as to facilitate the complete unloading of the steel structure components that need to be replaced. At the same time, after removing the replacement structure, we must ensure the safety of the whole plant structure.

Local reinforcement of steel structure in workshop

The local reinforcement of workshop steel structure is mainly to reinforce the workshop steel structure itself to some workshop components or connection points with small bearing capacity.

Integral reinforcement of steel structure in workshop

The whole reinforcement method is to reinforce the steel structure of the whole workshop. At present, there are two high frequency reinforcement methods. One is to calculate the numerical value without changing the static force of the workshop steel structure. The other is to calculate the shape of the workshop steel structure without changing the static force.

The reinforcement methods adopted by Dalian Guangtong Steel Structure Co., Ltd. are as follows:

In principle, we don't allow any welding operation for the steel structure buildings that have been installed. We only carry out welding reinforcement maintenance for the steel structure of the reused workshop.

1. Add welding and reinforcement parts

Welding reinforcement refers to the welding of metal cover plate or section steel in the damaged part of the structure, which plays a role in strengthening the steel structure. The convenience and reliability of welded reinforcement structure is usually the most traditional and direct choice in steel structure reinforcement.

2. Reinforcement bonding and reinforcement

In this process, the steel plate is pasted on the surface of the steel structure with special building structural adhesive, so that it can be bonded as a whole to bear the load together and improve the stability of the structure.

3. Carbon fiber reinforced

The main advantages of carbon fiber reinforced materials are greater strength than stiffness, fatigue and corrosion resistance, strong field operability, short construction period, protection of the original structure, etc. Because of its excellent physical and mechanical properties, it has been widely used in the reinforcement of concrete structures and masonry structures.

4. Combined reinforcement

The composite reinforcement method is to use the principle of composite structure to reinforce the concrete, using the method of filling concrete inside and wrapping concrete to reinforce the steel structure.

5. Prestressed reinforcement

The principle of steel structure prestressed reinforcement is to use prestressed steel strand to strengthen the whole steel structure or components. Its essence is to reduce the prestress level of the original steel structure by applying prestress, so as to change the internal force distribution of the original steel structure.

Dalian Guangtong Steel Structure Co., Ltd. is a steel structure company located in Liaoning, China. It mainly aims at the steel structure construction industry, integrating design, production and installation. Based on the development and research of high standard new building materials. We have implemented the company's management system and strict product quality management. We firmly believe that good reputation comes from excellent quality and strong strength.