Steel structure housing advantages and shortcoming

Advantage

1. Compared with traditional buildings, steel structure housing can better meet the requirements for convenient separation of large bays in buildings, and can improve the utilization rate of the total area by reducing the section area of columns and using light partition boards. The reasonable indoor area is increased by about 6%.

2. The effect of environmental protection and energy conservation is obvious. The walls are made of light, environment-friendly and energy-saving standardized C-shaped steel, square steel tubes and color steel sandwich panels, which have good thermal insulation performance, good seismic rating and 50% environmental protection and energy conservation.

3. The steel structure management system can be fully used in residential buildings. The steel structure has good ductility, strong plastic deformation ability, good seismic grade and impact resistance, which greatly improves the safety and stability of the residence. Especially in the case of earthquake and typhoon disasters, steel structures can avoid collapse of buildings.

4. The engineering building is light in weight. The steel structure housing itself is light, about half of the concrete structure, which can greatly reduce the basic project cost.

5. The construction speed is faster. The construction period is at least one third less than that of the traditional housing management system. It takes only 20 days and five workers to complete a 1000 square meter building.

6. The effect of environmental protection is obvious. During the construction of steel structure housing, the consumption of sand, stone and ash is greatly reduced, and the materials used are 100% recycled or dissolved raw materials. During the demolition of buildings, most of the raw materials can be reused or dissolved without waste.

7. Large bay design scheme, indoor space can be divided into multiple plans to meet different needs of customers.

8. Comply with the requirements of building industrialization and sustainable development. The steel structure is suitable for batch production in the factory, with a high degree of industrialization. In addition, it can integrate advanced products such as environmental protection, energy conservation, moisture-proof, thermal insulation, windows and doors, and use complete sets of equipment. Integrate design scheme, production and manufacturing, and engineering construction, and improve the level of capital construction industry chain.

Shortcoming

1. Diversity. The diversity of construction quality problems of steel structure projects is mainly reflected in the variety of influencing factors that cause product quality problems, and the main causes of product quality problems are also complex. Even for product quality problems of the same nature, the causes are sometimes different, and the analysis, judgment and solution of product quality problems enhance the diversity. For example, the electric welding seam can occur in both the weld metal and the thermal hazard of the raw material; Both the surface layer and the internal structure can be welded; The gap can be either parallel to the weld or perpendicular to the weld. The gap may be either cold or hot. It is also caused by the unreasonable use of welding materials and the unreasonable difference between electric welding heating or post heating.

2. Plasticity. The quality control problems of steel structure engineering will also develop and change with the external changes and the increase of time, and the quality defects will be reflected slowly. For example, because of the change of the ground stress, welding of the steel components with theout gaps will cause gaps. Because the effect of welding hydrogen containing theme activities after welding can cause delay time gap. Also, if the component bears the load for a long time, the steel component will be bent and deformed under the arch, causing potential safety hazards.

3. Serious consequences. The severity of engineering quality problems of steel structure engineering projects is reflected in the following aspects: general interference with the smooth construction of the project, resulting in construction delay, rising costs, very serious collapse of buildings, personal accidents, asset damage, and adverse social impact.

4. High incidence. Because the modern architecture is dominated by concrete structure, the staff and professional technicians engaged in professional construction are relatively unfamiliar with the fabrication and construction technology of steel structure. The specific construction team led by migrant workers did not understand the scientific and reasonable construction technology of steel structure engineering, which caused frequent accidents in the construction process.