Characteristics of steel structure installation pr

2022-07-22
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With the continuous improvement of social economy and science and technology, the application of steel structure buildings is becoming more and more common. The so-called steel structure refers to the building structure mainly made of steel and composed of steel beams, steel columns, steel trusses and other components made of section steel and steel plates. Do you know the characteristics of steel structure? What is the process flow of steel structure installation? Now let's take a look with Xiaobian

with the continuous improvement of social economy and science and technology, the application of steel structure buildings is becoming more and more common. The so-called steel structure refers to the building structure mainly made of steel and composed of steel beams, steel columns, steel trusses and other components made of section steel and steel plates. Do you know the characteristics of steel structure? What is the process flow of steel structure installation? Now let's take a look with Xiaobian

steel structure installation

characteristics of steel structure

steel structure system has the comprehensive advantages of light self weight, industrialized manufacturing, fast installation, short construction cycle, good seismic performance, fast investment recovery, less environmental pollution, high degree of industrialization, and has more unique advantages than reinforced concrete structure. In the world, especially in developed countries and regions, steel structures are widely used in various engineering construction, such as steel bridges, steel plants, steel gates, various large pipe containers, high-rise buildings and tower rail mechanisms

steel structure installation process flow

1. According to the normal installation sequence and process requirements, the prefabrication and assembly of steel structure on the steel platform must ensure the quality of welding production

2. The spacing between the splicing joint of flange plate and web plate of section steel shall be greater than 200mm. The splicing length of flange plate shall not be less than 2 times the plate width; The width of web splicing shall not be less than 300mm, and the length shall not be less than 600mm

3. In order to facilitate welding and ensure welding quality, try to assemble and weld the stiffeners, connecting plates, base plates, cantilever beams, etc. on the ground steel platform according to the dimensions of the construction drawing

4. In addition to the fabrication and assembly of steel components prefabricated on the steel platform in accordance with the construction drawings and specifications, the changes of on-site installation workmanship and installation dimensions should also be considered

steel structure installation

key points of steel structure installation

1. Friction coefficient: where f is the force that causes the initial slip of the specimen measured in the anti slip test, NF is the number of friction surfaces, and is the sum of the measured values of the tightening pretension of high-strength bolts corresponding to F

2. Torque coefficient: where D is the nominal diameter of high-strength bolt (mm), M is the applied torque value (N.m), and P is the bolt preload. Grade 10.9 high-strength large hexagon bolt connection must ensure that the average value of torque coefficient K is 0.110 ~ 0.150. The standard deviation shall be less than or equal to 0.010

3. Initial tightening torque: in order to reduce the influence of steel plate deformation during bolt tightening, secondary tightening can be used to reduce the interaction between successively tightened bolts. The first tightening of high-strength bolts is the initial tightening, so that its axial force should reach 60% - 80% of the standard axial force

4. Final tightening torque: the torque used for the final tightening of high-strength bolts is the final tightening torque. Considering the loss of various prestressing forces, the final tightening torque is generally 5% - 10% larger than the torque calculated theoretically according to the design pretension

the above features of steel structure and the installation process of steel structure are briefly introduced here. I hope it will be helpful to you. Please look forward to more information

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