With the development of social economy, the level of urban construction is getting higher and higher, and the technical level of the construction industry is also advancing by leaps and bounds. As a new building structure, the development of steel structure is also very rapid. From light steel houses to super high-rise buildings, from channel shelters to large sports venues, from small warehouses to large industrial plants, steel structures are omnipotent and nowhere. Due to the increasing scope of use, the construction technology of steel structure engineering has gradually matured. So today, Fuxin Guangsheng will show you what is included in the construction technology of steel structure engineering!
1. Construction technology of high-rise steel structure engineering
According to the building height and design requirements, frames, frame supports, cylinders and mega-frame structures are used, and the components can be steel, stiffened reinforced concrete or concrete-filled steel tubes. The light-weight and ductile steel components can be welded or rolled steel, which is suitable for ultra-high-rise buildings; the stiffened reinforced concrete members have high rigidity and good fire resistance, and are suitable for high-rise buildings;
2. Space steel structure engineering construction technology
The space steel structure has light weight, high rigidity, beautiful appearance and fast construction speed. Spherical node flat grids, multi-layer variable cross-section grids and reticulated shells with steel pipes as members are the structural types with large amount of space steel structures in my country. It has the advantages of large space rigidity and low steel consumption. It can provide complete CAD in design, construction and inspection procedures. In addition to the grid structure, the space structure also has a long-span suspension cable structure, cable-membrane structure, etc.
3. Construction technology of light steel structure engineering
Along with the new structure form made of light colored steel plate made of wall and roof envelope structure. A light steel structure system consisting of a thin cross-section H-shaped steel wall beam and roof purlins welded or rolled with a steel plate of more than 5mm, a flexible support system made of round steel and high-strength bolt connections. 30m or more, the height can reach more than ten meters, and the steel consumption is 20～30kg/㎡. The steel structure workshop has fast installation speed, light weight, low investment, and the construction is not restricted by seasons. It is suitable for various light industrial workshops.
4. Steel and concrete combined structure technology
The beam and column load-bearing structure composed of section steel or steel and concrete members is a steel-concrete composite structure technology, and its application range has been expanding in recent years. The combined structure has the advantages of both steel and concrete. The overall strength is strong, the rigidity is good, and the seismic performance is good. When the outer concrete structure is used, it has better fire resistance and corrosion resistance. The combined floor and concrete-filled steel tube members also have the advantages of less or no formwork and convenient and fast construction. It is suitable for frame beams, columns and floors of multi-storey or high-rise buildings with large loads, industrial building columns and floors, etc.
5. High-strength bolt connection and welding technology
High-strength bolts transmit stress through friction, and are composed of bolts, nuts and washers. The high-strength bolt connection is easy to construct, flexible to dismantle, high in bearing capacity, good in fatigue resistance and self-locking, and high in safety. Riveting and partial welding have been replaced in the project, and it has become the main connection method in the manufacture and installation of steel structures. For the steel components produced in the workshop, the thick plates should be automatically multi-wire arc submerged welding, and the box-shaped column partition should adopt Rongzu electroslag welding technology. In the field installation and construction, semi-automatic welding technology and gas shielded flux cored wire and self-protected flux cored wire technology should be used.
6. Steel structure engineering protection technology
Steel structure protection includes fire prevention, anti-corrosion, and anti-rust. Generally, anti-rust treatment is not required after the fire-retardant coating is processed, but anti-corrosion treatment is still required in buildings with corrosive gas. There are many types of domestic fireproof coatings, such as TN series, MC-10, etc. Among them, MC-10 fireproof coatings include alkyd magnetic paint, chlorinated rubber paint, fluororubber paint and chlorosulfonated paint. In the construction, the appropriate paint and coating thickness should be selected according to the steel structure type, fire resistance requirements and environmental requirements.
Our company can custom design large-span environmentally-friendly steel structure workshops for customers. The material is Q235B or Q345B, and the seismic strength can reach level 7, and the surface is sandblasted and derusted. Steel structure workshops can be used as warehouses, stadiums, residences, light steel complex houses, light steel villas and other construction sites. The installation method adopts on-site hoisting assembly and bolt connection installation. The steel structure workshop of our company has the advantages of large span, high strength, light weight, thermal insulation and energy saving, beautiful and durable, short construction time, good thermal insulation effect, long service life, space saving, good seismic performance and flexible layout.
Dalian Fuxin Guangsheng Trading Co., Ltd. was established in June 2017 and has independent import and export rights. The company's business scope includes import and export of goods and technology. Has a 12,000 square meters processing workshop. There are 9 business personnel and 86 employees in the processing factory. Since the establishment of the company, it has continued to develop steel structure products export business in Singapore, Japan and Germany. Complete the foreign exchange settlement business of SGD, JPY and USD. We support the processing and production of welded structural parts, prefabricated buildings, engineering equipment, machined parts and molds. The product quality is safe and reliable, and we are committed to providing customers with the best service. Companies adhering to the "integrity first, dedicated service " concept, with a new management model and perfect technical business, is committed to bringing customers the best quality service.