Introduction to steel structure
Steel structure engineering is a structure mainly made of steel and is one of the main types of building structures. Steel structure is one of the more common structural forms in modern construction projects. my country is the first country to use iron to make load-bearing structures. As far back as the time of Qin Shihuang (246-219 BC), iron has been used to make simple load-bearing structures. Western countries only began to use metal load-bearing structures in the 17th century. From the 3rd to the 6th century AD, the smart and industrious Chinese people used iron chains to build iron cable suspension bridges. The famous iron cable bridges over the Dadu River in Luding, Sichuan, the Yuanjiang Bridge in Yunnan, and the Panjiang Bridge in Guizhou are all examples of early iron load-bearing structures in my country. .
Steel structure engineering
Although our country made outstanding achievements in iron structures in the early days, due to the shackles of the feudal system for more than 2,000 years and underdeveloped science, it has long stayed at the level of iron buildings. It was not until the end of the 19th century that my country began to adopt modern steel structures. After the founding of New China, the application of steel structures has developed greatly, both in quantity and quality, far exceeding the past. It has reached a high level in terms of design, manufacturing and installation technology, and has mastered the design and construction technology of various complex buildings. It has built many large-scale and complex steel structure factory buildings, long-span steel Structural civil buildings and railway bridges, etc., the steel roof truss of my country's Great Hall of the People, the steel grid truss of stadiums in Beijing and Shanghai, the three-hinge steel arch of the Shaanxi Emperor Qin Shi Huang's Soldiers and Horses Exhibition Hall and the Bird's Nest in Beijing, etc. The floor of the light steel structure is composed of cold-formed thin-walled steel frames or composite beams, floor OSB structural panels, supports, connectors, etc. The materials used are oriented strand board, cement fiber board, and plywood. These lightweight floors can bear a load of 316 to 365 kilograms per square meter. The weight of the floor structure system of Matt Construction's light steel structure residence is only one-quarter to one-sixth of the traditional domestic concrete floor system, but the structural height of its floor will be 100 to 120 mm higher than that of ordinary concrete slabs.
steel structure
Structures mainly made of steel are one of the main types of building structures. Steel is characterized by high strength, light weight, and high rigidity, so it is particularly suitable for the construction of large-span, ultra-high, and ultra-heavy buildings. The material has good homogeneity and isotropy, and is an ideal elastomer, most suitable for general engineering. The basic assumptions of mechanics; the material has good plasticity and toughness, can undergo large deformation, and can withstand dynamic loads well; the construction period is short; it has a high degree of industrialization and can carry out specialized production with a high degree of mechanization; it has high processing precision and efficiency , good airtightness, so it can be used to build gas tanks, oil tanks, transformers, etc. Its disadvantage is poor fire resistance and corrosion resistance. It is mainly used for load-bearing frames of heavy-duty workshops, factory structures subject to dynamic loads, plate and shell structures, tall TV towers and mast structures, bridges and warehouses and other long-span structures, high-rise and super-high-rise buildings, etc. In the future, steel structures should study high-strength steel to greatly increase its yield point strength; in addition, new types of steel should be rolled, such as H-shaped steel (also known as wide-flange steel), T-shaped steel, and profiled steel plates to adapt to large-span structures. and the need for super high-rise buildings. Steel structures are divided into light steel and heavy steel. There is no unified standard for judgment, and many experienced designers or project managers often cannot fully explain it. You can comprehensively consider and judge based on some data:
Common specifications for steel structure design are as follows:
"Steel Structure Design Code" (GB50017-2003)
"Technical Specifications for Cold-Formed Thin-Walled Steel Structures" (GB50018-2002)
"Code for Acceptance of Construction Quality of Steel Structure Engineering" (GB50205-2001)
"Technical Regulations for Welding of Building Steel Structures" (JGJ81-2002, J218-2002)
"Technical Regulations for Steel Structures of High-Rise Civil Buildings" (JGJ99-98)
Connection method of steel structure:
Solder connection
Bolted
Rivet connection
Characteristics of steel structures
1. Steel structure has light weight
2. The reliability of steel structure work is high
3. Steel has good vibration (shock) resistance and impact resistance.
4. Steel structure manufacturing has a high degree of industrialization
5. Steel structures can be assembled accurately and quickly
6. Steel structure has large indoor space
7. Easy to make a sealed structure
8. Steel structures are prone to corrosion
9. Steel structure has poor fire resistance
10. Steel structures can be recycled
11. The steel structure construction period is short
Steel structure advantages
Shock resistance:
Most of the roofs of low-rise villas are sloped roofs, so the roof structure basically uses a triangular roof truss system made of cold-formed steel components. After the light steel components are sealed with structural plates and gypsum boards, they form a very strong " "Plate-rib structural system", this structural system has stronger ability to resist earthquakes and horizontal loads, and is suitable for areas with seismic intensity above 8 degrees.
Wind resistance:
Light weight, high strength, good overall rigidity and strong deformation ability. The building's self-weight is only one-fifth of that of a brick-concrete structure, and it can withstand hurricane force winds of 70 meters per second, effectively protecting life and property.
Durability:
The light steel structure residential structure is all composed of cold-formed thin-walled steel component systems. The steel frames are made of super anti-corrosion high-strength cold-rolled galvanized sheets, which effectively avoids the impact of corrosion of steel sheets during construction and use and increases the service life of light steel components. The structural life can reach 100 years.
Thermal insulation:
The thermal insulation material used is mainly fiberglass wool, which has good thermal insulation effect. The use of thermal insulation boards on exterior walls can effectively avoid the "cold bridge" phenomenon in the wall and achieve better thermal insulation effects. The thermal resistance value of R15 insulation cotton about 100mm thick can be equivalent to that of a 1m thick brick wall.
Sound insulation:
Sound insulation effect is an important indicator for evaluating residences. The windows installed in the light steel system are all made of insulating glass, which has good sound insulation effect, with the sound insulation effect reaching more than 40 decibels. The sound insulation effect of the wall composed of light steel keel and insulation material gypsum board can be as high as 60 decibels.
Healthy: Dry construction reduces environmental pollution caused by waste. The steel structure materials of the house can be 100% recycled, and most of the other supporting materials can also be recycled, which is in line with the current environmental awareness; all materials are green building materials and meet the requirements of the ecological environment. good for health.
Comfort:
The light steel wall adopts a high-efficiency energy-saving system, which has a breathing function and can adjust the dryness and humidity of indoor air; the roof has a ventilation function, which can form a flowing air space above the interior of the house to ensure ventilation and heat dissipation needs inside the roof.
Environmental friendly:
The materials are 100% recyclable, making it truly green and pollution-free.
Energy saving:
All use high-efficiency and energy-saving walls, which have good thermal insulation, heat insulation and sound insulation effects, and can reach 50% energy saving standards.
Advantages of steel structures
Compared with other constructions, steel structures have advantages in use, design, construction and comprehensive economics. They are low in cost and can be moved at any time.
1. Steel structure residences can better meet the requirements for flexible separation of large bays in buildings than traditional buildings. By reducing the cross-sectional area of columns and using lightweight wall panels, the area utilization rate can be increased, and the effective indoor use area can be increased by about 6 %.
2. The energy-saving effect is good. The walls are made of lightweight, energy-saving and standardized C-shaped steel, square steel, and sandwich panels, which have good thermal insulation performance and good earthquake resistance. 50% energy saving,
3. The use of steel structure systems in residential buildings can give full play to the steel structure's good ductility, strong plastic deformation ability, and excellent earthquake and wind resistance, which greatly improves the safety and reliability of the residence. Especially in the case of earthquakes and typhoons, steel structures can avoid collapse damage of buildings.
4. The total weight of the building is light. The steel structure residential system is light in weight, about half of the concrete structure, which can greatly reduce the basic cost.
5. The construction speed is fast, and the construction period is at least one-third shorter than the traditional residential system. It only takes 20 days and five workers to complete a 1,000-square-meter building. .
6. Good environmental protection effect. The amount of sand, stone and ash used in the construction of steel structure residential buildings is greatly reduced. The materials used are mainly green, 100% recycled or degraded materials. When the building is demolished, most of the materials can be reused or degraded and will not cause garbage. .
7. Be flexible and abundant. With a large bay design, the indoor space can be divided in multiple ways to meet the different needs of users.
8. Meet the requirements of residential industrialization and sustainable development. Steel structures are suitable for mass production in factories, have a high degree of industrialization, and can integrate advanced finished products such as energy saving, waterproofing, heat insulation, doors and windows, and apply them in complete sets, integrating design, production, and construction to improve the level of the construction industry.
Compared with ordinary reinforced concrete structures, steel structures have the advantages of uniformity, high strength, fast construction speed, good earthquake resistance and high recycling rate. The strength and elastic modulus of steel are many times higher than that of masonry and concrete, so under load Under the same conditions, the mass of steel components is lighter. From the perspective of damage, the steel structure has signs of large deformation in advance and is a ductile damage structure. Danger can be discovered in advance and thus avoided.
Steel structure factory buildings have the advantages of being overall light, saving foundation, using less materials, low cost, short construction period, large span, safe and reliable, beautiful appearance, and stable structure. Steel structure workshops are widely used in construction industries such as large-span industrial plants, warehouses, cold storages, high-rise buildings, office buildings, multi-story parking lots and residential buildings.
Introduction to steel structure
Steel structure engineering is a structure mainly made of steel and is one of the main types of building structures. Steel structure is one of the more common structural forms in modern construction projects. my country is the first country to use iron to make load-bearing structures. As far back as the time of Qin Shihuang (246-219 BC), iron has been used to make simple load-bearing structures. Western countries only began to use metal load-bearing structures in the 17th century. From the 3rd to the 6th century AD, the smart and industrious Chinese people used iron chains to build iron cable suspension bridges. The famous iron cable bridges over the Dadu River in Luding, Sichuan, the Yuanjiang Bridge in Yunnan, and the Panjiang Bridge in Guizhou are all examples of early iron load-bearing structures in my country. .
Steel structure engineering
Although our country made outstanding achievements in iron structures in the early days, due to the shackles of the feudal system for more than 2,000 years and underdeveloped science, it has long stayed at the level of iron buildings. It was not until the end of the 19th century that my country began to adopt modern steel structures. After the founding of New China, the application of steel structures has developed greatly, both in quantity and quality, far exceeding the past. It has reached a high level in terms of design, manufacturing and installation technology, and has mastered the design and construction technology of various complex buildings. It has built many large-scale and complex steel structure factory buildings, long-span steel Structural civil buildings and railway bridges, etc., the steel roof truss of my country's Great Hall of the People, the steel grid truss of stadiums in Beijing and Shanghai, the three-hinge steel arch of the Shaanxi Emperor Qin Shi Huang's Soldiers and Horses Exhibition Hall and the Bird's Nest in Beijing, etc. The floor of the light steel structure is composed of cold-formed thin-walled steel frames or composite beams, floor OSB structural panels, supports, connectors, etc. The materials used are oriented strand board, cement fiber board, and plywood. These lightweight floors can bear a load of 316 to 365 kilograms per square meter. The weight of the floor structure system of Matt Construction's light steel structure residence is only one-quarter to one-sixth of the traditional domestic concrete floor system, but the structural height of its floor will be 100 to 120 mm higher than that of ordinary concrete slabs.
steel structure
Structures mainly made of steel are one of the main types of building structures. Steel is characterized by high strength, light weight, and high rigidity, so it is particularly suitable for the construction of large-span, ultra-high, and ultra-heavy buildings. The material has good homogeneity and isotropy, and is an ideal elastomer, most suitable for general engineering. The basic assumptions of mechanics; the material has good plasticity and toughness, can undergo large deformation, and can withstand dynamic loads well; the construction period is short; it has a high degree of industrialization and can carry out specialized production with a high degree of mechanization; it has high processing precision and efficiency , good airtightness, so it can be used to build gas tanks, oil tanks, transformers, etc. Its disadvantage is poor fire resistance and corrosion resistance. It is mainly used for load-bearing frames of heavy-duty workshops, factory structures subject to dynamic loads, plate and shell structures, tall TV towers and mast structures, bridges and warehouses and other long-span structures, high-rise and super-high-rise buildings, etc. In the future, steel structures should study high-strength steel to greatly increase its yield point strength; in addition, new types of steel should be rolled, such as H-shaped steel (also known as wide-flange steel), T-shaped steel, and profiled steel plates to adapt to large-span structures. and the need for super high-rise buildings. Steel structures are divided into light steel and heavy steel. There is no unified standard for judgment, and many experienced designers or project managers often cannot fully explain it. You can comprehensively consider and judge based on some data:
Common specifications for steel structure design are as follows:
"Steel Structure Design Code" (GB50017-2003)
"Technical Specifications for Cold-Formed Thin-Walled Steel Structures" (GB50018-2002)
"Code for Acceptance of Construction Quality of Steel Structure Engineering" (GB50205-2001)
"Technical Regulations for Welding of Building Steel Structures" (JGJ81-2002, J218-2002)
"Technical Regulations for Steel Structures of High-Rise Civil Buildings" (JGJ99-98)
Connection method of steel structure:
Solder connection
Bolted
Rivet connection
Characteristics of steel structures
1. Steel structure has light weight
2. The reliability of steel structure work is high
3. Steel has good vibration (shock) resistance and impact resistance.
4. Steel structure manufacturing has a high degree of industrialization
5. Steel structures can be assembled accurately and quickly
6. Steel structure has large indoor space
7. Easy to make a sealed structure
8. Steel structures are prone to corrosion
9. Steel structure has poor fire resistance
10. Steel structures can be recycled
11. The steel structure construction period is short
Steel structure advantages
Shock resistance:
Most of the roofs of low-rise villas are sloped roofs, so the roof structure basically uses a triangular roof truss system made of cold-formed steel components. After the light steel components are sealed with structural plates and gypsum boards, they form a very strong " "Plate-rib structural system", this structural system has stronger ability to resist earthquakes and horizontal loads, and is suitable for areas with seismic intensity above 8 degrees.
Wind resistance:
Light weight, high strength, good overall rigidity and strong deformation ability. The building's self-weight is only one-fifth of that of a brick-concrete structure, and it can withstand hurricane force winds of 70 meters per second, effectively protecting life and property.
Durability:
The light steel structure residential structure is all composed of cold-formed thin-walled steel component systems. The steel frames are made of super anti-corrosion high-strength cold-rolled galvanized sheets, which effectively avoids the impact of corrosion of steel sheets during construction and use and increases the service life of light steel components. The structural life can reach 100 years.
Thermal insulation:
The thermal insulation material used is mainly fiberglass wool, which has good thermal insulation effect. The use of thermal insulation boards on exterior walls can effectively avoid the "cold bridge" phenomenon in the wall and achieve better thermal insulation effects. The thermal resistance value of R15 insulation cotton about 100mm thick can be equivalent to that of a 1m thick brick wall.
Sound insulation:
Sound insulation effect is an important indicator for evaluating residences. The windows installed in the light steel system are all made of insulating glass, which has good sound insulation effect, with the sound insulation effect reaching more than 40 decibels. The sound insulation effect of the wall composed of light steel keel and insulation material gypsum board can be as high as 60 decibels.
Healthy: Dry construction reduces environmental pollution caused by waste. The steel structure materials of the house can be 100% recycled, and most of the other supporting materials can also be recycled, which is in line with the current environmental awareness; all materials are green building materials and meet the requirements of the ecological environment. good for health.
Comfort:
The light steel wall adopts a high-efficiency energy-saving system, which has a breathing function and can adjust the dryness and humidity of indoor air; the roof has a ventilation function, which can form a flowing air space above the interior of the house to ensure ventilation and heat dissipation needs inside the roof.
Environmental friendly:
The materials are 100% recyclable, making it truly green and pollution-free.
Energy saving:
All use high-efficiency and energy-saving walls, which have good thermal insulation, heat insulation and sound insulation effects, and can reach 50% energy saving standards.
Advantages of steel structures
Compared with other constructions, steel structures have advantages in use, design, construction and comprehensive economics. They are low in cost and can be moved at any time.
1. Steel structure residences can better meet the requirements for flexible separation of large bays in buildings than traditional buildings. By reducing the cross-sectional area of columns and using lightweight wall panels, the area utilization rate can be increased, and the effective indoor use area can be increased by about 6 %.
2. The energy-saving effect is good. The walls are made of lightweight, energy-saving and standardized C-shaped steel, square steel, and sandwich panels, which have good thermal insulation performance and good earthquake resistance. 50% energy saving,
3. The use of steel structure systems in residential buildings can give full play to the steel structure's good ductility, strong plastic deformation ability, and excellent earthquake and wind resistance, which greatly improves the safety and reliability of the residence. Especially in the case of earthquakes and typhoons, steel structures can avoid collapse damage of buildings.
4. The total weight of the building is light. The steel structure residential system is light in weight, about half of the concrete structure, which can greatly reduce the basic cost.
5. The construction speed is fast, and the construction period is at least one-third shorter than the traditional residential system. It only takes 20 days and five workers to complete a 1,000-square-meter building. .
6. Good environmental protection effect. The amount of sand, stone and ash used in the construction of steel structure residential buildings is greatly reduced. The materials used are mainly green, 100% recycled or degraded materials. When the building is demolished, most of the materials can be reused or degraded and will not cause garbage. .
7. Be flexible and abundant. With a large bay design, the indoor space can be divided in multiple ways to meet the different needs of users.
8. Meet the requirements of residential industrialization and sustainable development. Steel structures are suitable for mass production in factories, have a high degree of industrialization, and can integrate advanced finished products such as energy saving, waterproofing, heat insulation, doors and windows, and apply them in complete sets, integrating design, production, and construction to improve the level of the construction industry.
Compared with ordinary reinforced concrete structures, steel structures have the advantages of uniformity, high strength, fast construction speed, good earthquake resistance and high recycling rate. The strength and elastic modulus of steel are many times higher than that of masonry and concrete, so under load Under the same conditions, the mass of steel components is lighter. From the perspective of damage, the steel structure has signs of large deformation in advance and is a ductile damage structure. Danger can be discovered in advance and thus avoided.
Steel structure factory buildings have the advantages of being overall light, saving foundation, using less materials, low cost, short construction period, large span, safe and reliable, beautiful appearance, and stable structure. Steel structure workshops are widely used in construction industries such as large-span industrial plants, warehouses, cold storages, high-rise buildings, office buildings, multi-story parking lots and residential buildings.
Product Usage
Sports facilities: stadium/gymnasium/tennis court/swimming pool/training center/fitness center, etc.
Commercial facilities: shopping malls/amusement centers/hotels/restaurants/commercial streets, etc.
Cultural facilities: exhibition center/theater/performance center/aquarium, etc.
Transportation facilities: airport/train station/pier/parking lot/overpass/gas station/toll station, etc.
Landscape facilities: iconic sketches/square signs/community landscapes/pedestrian streets, etc.
Industrial facilities: factories/warehouses/sewage treatment: processing centers/logistics centers/greenhouses, etc.
Product Usage
Sports facilities: stadium/gymnasium/tennis court/swimming pool/training center/fitness center, etc.
Commercial facilities: shopping malls/amusement centers/hotels/restaurants/commercial streets, etc.
Cultural facilities: exhibition center/theater/performance center/aquarium, etc.
Transportation facilities: airport/train station/pier/parking lot/overpass/gas station/toll station, etc.
Landscape facilities: iconic sketches/square signs/community landscapes/pedestrian streets, etc.
Industrial facilities: factories/warehouses/sewage treatment: processing centers/logistics centers/greenhouses, etc.
Tel: +86 185 8800 8188
Address: No.04, Zone A7, Zhongyi Iron and Steel World, Shunde District, Foshan City, Guangdong Province, China
Factory: Warehouse 3, Block B, No. 12-1, Lecong Xihai Industrial Zone, Shunde, Foshan City, Guangdong Province, China
Copyright © 2024 Guangdong Shunde Dagao Steel Trading Co., Ltd. Powered by iglobalwin.com 广东顺德大高钢铁贸易有限公司
