1It is widely used in factories, warehouses, office buildings, gymnasiums, aircraft hangars, etc.It is not only suitable for single-layer and large-span construction, but also for multi-layer or high-rise construction.2. The construction is simple and the construction period is short. All the components are prefabricated in the factory, and the site only needs simple assembly, which greatly shortens the construction period. A 6000 square meter building can be basically installed in 40 days.3. Durable and easy to maintain, the steel structure designed by general computer can resist the bad weather and only need simple maintenance.4. Beautiful and useful, steel structure construction lines simple and smooth, with a modern sense.The colorful wall panel has a variety of colors to choose from, and the wall can also use other materials, so it is more flexible.5. The construction cost is reasonable, the steel structure construction is light, the foundation cost is reduced, and the construction speed is fast. It can be completed and put into operation as soon as possible. The economic benefit is much better than that of the concrete structure construction. 

The disadvantages of steel structure workshop: 1. The foundation of steel structure workshop is simple and unstable.Due to the characteristics of the steel structure itself, all or part of the instability is related to the whole process of foundation and bolt. At the same time, the two are also interrelated. Most of the instability of steel structure workshop is caused by steel. Once the slenderness ratio of compression part or bending part exceeds the standard value, it will lose stability.There are many objective factors that lead to instability, such as load changes, initial defects of steel, different support conditions and so on.There are three kinds of foundation problems: foundation strength, foundation deformation and foundation damage.1. The problem of foundation strength is generally manifested in the lack of foundation bearing capacity and the instability of foundation or slope.2. The problem of foundation deformation is concentrated in soft soil, wet loess, expansive soil and seasonally frozen soil. These areas have excessive deformation and uneven settlement due to load.3. There are three forms of foundation damage: partial shear damage, total shear damage and punching damage. 

2、 Steel roof failure of steel structure workshop

　　1.Most of the steel roof bearing and reconstructing parts are composed of thin-walled C-section steel and slender members, whose section shape is complex and the joint stress concentration exists eccentric gravity at the same time. 

　　2.In the design of steel roof, the calculation load and calculation diagram are correct, almost close to the calculation limit state, the bearing capacity of structural members is small, and the sensitivity to humidity, overload and corrosion is very high. Accidental factors are easy to cause its failure. If all kinds of negative effects are added in the process of manufacturing, installation and use, the steel roof is a steel structure workshop with strict damage.The heavy part. 

　　3.The main damages include bending of members, collapse of roof, bending or cracking of gusset plate, fracture of frame members, bending of roof over standard roof support, and leakage of internal water tank. 

3、 Steel corrosion of steel structure workshop

When the steel structure workshop is exposed to the outside, the corrosion resistance of ordinary steel is not strong, especially in the external environment with high humidity and corrosive medium, the steel structure is easy to rust and corrosion, which greatly weakens the bearing capacity of components.A large number of statistical data show that steel roof truss collapse accidents due to corrosion and lack of maintenance account for a large proportion of the total.