Steel structure design should first judge whether the structure is suitable for steel structure.At present, steel structure building is changing into a kind of architectural style.The modern observation of famous buildings can not be separated from steel clips.Although steel structure has many advantages, it is profitable and not fire resistant.In case of fire, the measured value exceeds 600 u, and the steel structure will be fully loaded.Generally speaking, high-rise buildings, long-span buildings, simple shapes, large dynamic loads, high sealing requirements, buildings that need to be moved and disassembled are multi-purpose steel structures, but they are not suitable for multi-storey residential buildings.

It is considered that the use of steel structure requires the selection and deployment of operation structure.In a certain process, conceptual design should be emphasized.Especially for some sensitive problems that are difficult to analyze accurately or the standard is not standard, we can analyze the mechanical connection, failure mechanism, earthquake damage, test reason and engineering experience of the whole structure system and analysis system.In consideration of the overall hardness, it is necessary to master the structure layout and specific measures.

In short, we should choose an appropriate structural scheme or feasible structural mode and system.We should also observe the operation of the plan and choose the best plan when we have the rest.After the structure is determined, the member section needs to be preliminarily budgeted.

The key is to assume the section shape and size of beams, columns and bearings.For example, the steel beam can choose channel steel, H-shaped steel, etc., and the beam section height can also choose between L /20-L/ 50 of the span.In particular, we should pay attention to the opposite structure.The requirements of this standard for section construction are quite different.For example, the overall stability of steel structural members is different from the limit values in the common steel and light steel standards.Simple structure can be analyzed by manual operation.Simple structure can simulate the operation process and carry out detailed structure analysis.

In engineering design, there is a certain interval between the plan and the accurate mechanical plan.In order to lose the design method adopted, sometimes some assumptions have large errors, and even some engineering budget or experience methods are used.Although this error will be guaranteed in the form of “actual conditions, concepts and structures” in the design, the concept design should be emphasized here.And engineering discrimination.Then, the connection design and component design of the entrance structure are realized.The connection design of steel structure is also very important.The quality of connection design indirectly does not require the use of bridges and other structures, the key is to bear the dynamic load, so the design should be too much to prevent rivets and bolts.