Advantages and disadvantages of steel structure

           1、 The weight of steel structure is light and the volume weight of steel structure is relatively large. Compared with other building materials, its strength is much higher. Therefore, when the load and conditions are the same, the steel structure is lighter than other structures, convenient for transportation and installation, and can span a larger span.

           2、 Because of the good plasticity and toughness of steel, the steel structure will not break suddenly because of accidental overload or local overload.If the toughness is good, the adaptability of steel structure to dynamic load is strong.These properties of steel provide sufficient guarantee for the safety and reliability of steel structure. 

           3、 The steel is more close to the homogeneous and isotropic body, the internal structure of the steel is relatively uniform, very close to the homogeneous and isotropic body, and is almost completely elastic within a certain stress range.These properties are consistent with the assumptions in mechanical calculation, so the calculation results of steel structure are more consistent with the actual stress situation.

           4、 The steel structure is easy to manufacture, easy to adopt industrial production, short construction and installation period, and the steel structure is composed of various profiles, which is easy to make.A large number of steel structures are manufactured in specialized metal structure manufacturing plants with high accuracy.The fabricated components are transported to the site for assembly and connected by bolts, and the structure is light, so the construction is convenient and the construction period is short.In addition, the built steel structure is easy to dismantle, strengthen or transform.

           5、 The airtightness of steel structure is good. The airtightness and water tightness of steel structure are good.

           6、 The heat resistance of steel structure is good, but the fire resistance of steel is poor.As the temperature increases, the strength decreases.When there is radiant heat around and the temperature is above 150 ℃, the shielding measures should be taken.In case of fire, when the temperature of the structure reaches above 500 ℃, it may collapse instantly.In order to improve the fire resistance of steel structure, it is usually wrapped with concrete or brick.

           7、 The steel is easy to rust, so protective measures should be taken. The steel is easy to rust in humid environment, especially in the environment with corrosive medium. It must be painted or galvanized, and it should be maintained regularly during use. 

           Compared with other structures, steel structure has advantages in function, design, construction and comprehensive economy. The advantages of steel structure in residential buildings are mainly reflected in the following aspects:

            1、 Compared with the traditional buildings, the steel structure residence can better meet the requirements of flexible separation of large openings in the building. By reducing the cross-sectional area of columns and using light wallboard, the area utilization rate can be increased, and the indoor effective use area can be increased by about 6%.

            2、 Energy saving effect is good. The wall adopts light energy-saving standardized prefabricated wallboard instead of clay brick, with good heat preservation performance and energy saving of 50%. The cost of heating and cooling per square meter per household can be saved by 18 yuan.

            3、 The application of steel structure system in residential buildings can give full play to its good ductility, strong plastic deformation ability, excellent seismic and wind resistance performance, and greatly improve the safety and reliability of residential buildings.Especially in the case of earthquake and typhoon, it can avoid the collapse of buildings.For example, in the Hanshin earthquake of Japan in 1995, almost all the steel structures made of H-shaped steel were not collapsed in the Taiwan earthquake of 1999.

            4、 The total weight of the building is light, and the self weight of the steel structure residential system is light, which is about half of the concrete structure, which can greatly reduce the foundation cost.

            5、 The construction speed is fast and the construction period is at least one third shorter than that of the traditional residential system, so the comprehensive cost can be reduced by 5%.Speed up capital turnover and greatly improve investment efficiency.

            6、 Good environmental protection effect.During the construction of steel structure residence, the amount of sand, stone and ash is greatly reduced. The materials used are mainly green, recyclable or degradable materials. When the buildings are demolished, most of the materials can be recycled or degraded, which will not cause a lot of garbage.

            7、 It has high performance price ratio.

            8、 The architectural style is flexible and solid.Large bay design, indoor space can be divided into multiple schemes to meet the different needs of users.

            9、 It meets the requirements of housing industrialization and sustainable development.The steel structure is suitable for large-scale production in the factory, with high degree of industrialization. It can integrate advanced products such as energy saving, waterproof, heat insulation, doors and windows into a whole set of applications, integrate design, production and construction, and improve the level of housing industry.