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Key points of construction quality control of steel structure engineering
time2020/02/11
- The quality control of steel structure manufacturing engineering includes the quality control of embedded bolts for steel structure foundation, the quality control of steel structure manufacturing process and the quality control of on-site installation of steel structure.
With the continuous development of modern economy, steel structure engineering has been widely used in the field of engineering because of its advantages of fast construction speed, short period, high strength, easy prefabrication, installation, suitable for high-rise and large span.
In the past, a large number of reinforced concrete structures and prestressed concrete structures were used in our country, and the on-site engineers and technicians were lack of construction experience of steel structure engineering. The quality of construction directly affected the safety of engineering structure. Therefore, people pay more and more attention to the quality of steel structure engineering. Therefore, it is of great practical significance and necessity to strengthen the quality control of steel structure engineering construction.
1. Construction preparation
Construction preparation is a necessary condition for construction. It plays an important role in giving full play to people's positive factors, reasonably organizing human and material resources, accelerating project progress, providing construction quality, saving investment and materials, and successfully completing the task of steel structure construction.
2. Pay attention to the quality control of steel structure foundation engineering
The quality control of steel structure foundation engineering generally refers to the quality control of steel structure foundation embedded bolts. Embedded bolts are the first step of the whole project construction, and also a very critical step, which is the foundation of the whole project.
3. Quality control of steel structure fabrication engineering
The construction of steel structure engineering usually goes through two stages: factory production and on-site installation. Most of the time, the steel structure engineering is carried out in the workshop. Because the quality of steel structure components processed and manufactured in the factory is very important for the on-site installation of steel structure engineering and the safety and stability of the whole structure. Therefore, the steel structure manufacturer must have the corresponding enterprise qualification, production scale, technical ability, mechanical equipment and advanced technology level. Guangtong steel structure has its own quality inspection department, product quality certification system, welding quality certification system, various testing tools and equipment.
The general manufacturing process of steel structure is divided into: blanking → splicing → cutting → assembly → submerged arc welding → drilling → assembly → rectification and forming → riveting parts blanking → manufacturing and assembly → welding and welding inspection → rust prevention treatment, painting, numbering → component acceptance and delivery. In the production of steel structure, we should grasp the key process to control the quality according to the production process of steel structure, such as controlling the processing of key parts, the process and measures of main components, the processing equipment and process equipment used, etc.
4. Pay attention to welding engineering quality control
Welding engineering is the most important link in steel structure manufacturing and installation engineering, so we must pay attention to the quality control of welding engineering. At present, automatic submerged arc welding machine and semi-automatic gas shielded welding machine are mostly used in steel structure production, and manual welding is used in some parts.
5. Quality control of steel component installation
After the steel structure is manufactured in the factory, it will be installed on site. Before the installation of steel structure, the quality of components shall be inspected. When the permanent deformation and defects of components exceed the allowable value, they shall be treated.
6. Quality control of steel structure fastener connection
The quality control of steel structure fastener connection mainly emphasizes the quality control of high strength bolt connection.
7. Steel structure derusting and Painting Engineering
Rust removal and coating of steel structure are the most easily neglected links in steel structure engineering. Derusting of steel structure is divided into manual derusting and mechanical derusting. Construction personnel shall adopt different derusting methods according to drawing requirements and derusting grade. The quality control of painting engineering shall be such that before the painting of steel structure, there shall be no welding slag, oil stain, water, burr and other foreign matters on the surface of painted components, and the number and thickness of painting shall meet the design requirements. The coating materials must have certificates, and the fire retardant coating project must be carried out by the construction unit approved by the fire department.
With the wide application of steel structure in the construction industry and the emergence of a large number of steel structure buildings, steel structure construction technicians need to constantly strengthen learning, improve the professional knowledge and management content of steel structure engineering. In the process of steel structure engineering construction, we should strive for survival by quality and do a good job in the quality control of steel structure engineering, so as to ensure the construction quality of steel structure engineering to a higher level It's a new step.
Dalian Guangtong Steel Structure Co., Ltd. is a construction and manufacturing company specializing in steel structure and non-standard metal components. Is a steel structure manufacturing, production, processing, installation and technical services in one of the steel structure enterprises. Choose Guangtong Steel Structure Co., Ltd., we will live up to your support and trust until you are satisfied!
