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Structural requirements for steel structure space frame joints

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In the steel structure space frame , the nodes play the role of connecting the intersecting members and transferring the roof load and crane load. The space frame  also belongs to the space bar system, and there are at least 6 bars and as many as 13 bars that converge on a node. This adds a certain degree of difficulty to node design. The space frame  has a large number of nodes, and the amount of steel used for the nodes accounts for 1/5~1/4 of the steel used for the entire space frame  members. Reasonable design of nodes has a direct relationship with the safety of the space frame , production and installation, project progress, steel consumption indicators, and the cost of steel structure space frame  construction. Node design is one of the important links in space frame  design . Design space frame structure consultation: https://www.safsteelstructure.com/ The node structure of the steel structure space frame  should meet the following 4 points: (1) The force is reasonable and the

Analysis of Construction Technology of Spherical Space Frame

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  1. Before the spherical space frame is assembled, the positioning axis, elevation, levelness and anchoring position of the support of the space frame structure should be accurately measured, and the theodolite, level and steel ruler should be used for actual measurement. 2. The type, specification, model, placement and orientation of the support pad must meet the design requirements. Because the internal force of the member and the deformation of the node are calculated according to the support node under certain constraints, and the change of the type, specification, placement and orientation of the support pad will have a direct impact on the constraints of the space frame nodes.  For example, the position and orientation of the support points are distributed with peripheral support, point support, combination of peripheral support and point support, opening on one side of three-side support, opening on both sides of support on both sides, etc. If the position and orientation of t

Reasons of Corrosion of Large Span space frame Structures

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The aging of the space frame  structure paint is an important reason for the corrosion of the space frame  structure. No matter what kind of material basically has aging characteristics, and anti-corrosion coatings will also have aging problems. It is because of the aging problem of this kind of paint that the anti-corrosion coating of the steel structure fails, which in turn causes the space frame  structure to corrode and rust and affect the service life. It is also because of the natural environment surrounding the space frame  structure. If the air around the space frame  structure is relatively humid, it will definitely cause the space frame  structure to gradually rust under the erosion of water and air. The content of corrosive and harmful components such as carbides, nitrides and sulfides in the polluted atmosphere will also affect the service life of the space frame  structure. For the maintenance of the space frame  structure, it is necessary to pay attention at all times.

Requirements for workers when welding roof space frame structures

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  When we want to use the roof space frame structure to construct a building, we should be able to find whether we choose to use manual installation, or equipment and manual cooperation. All this requires the use of weld ing. Therefore, when we install the roof space frame structure, we can reduce the rework by selecting welders with better skills. So when we welders are working, how can we improve the stability of the building? First, when welding the roof space frame structure, we must first check the condition of the material, and then proceed with the construction without any problems. Second, before construction, you must pay attention to protect yourself, so you must wear protective equipment during construction. And in the case of bad weather, don't have an accident in order to catch up with the construction period. Third, when welding the roof space frame structure, it is necessary to pay attention to the quality of the building after welding. The more common method is to

How to avoid corrosion in steel structure engineering

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  As we all know, the most afraid of steel structure engineering is corrosion, so how to avoid corrosion? Please be sure to have 3 necessary conditions at the same time, namely material, substance and tensile stress. Therefore, it is necessary to start from these three hazard elements, and take corresponding countermeasures from product design, installation engineering construction to important links in enterprise production management. (1)  Material: use duplex stainless steel; select welding consumables with basically the same composition and microstructure as the base metal (the principle of equal composition); (2)   Substance: The possibility of corrosion of the base metal by the substance must be specifically considered, in order to reduce or remove stress corrosion in special environments, and corrosion inhibitors can be added to the substance.Metal surface treatment technology can also be used to prepare cathodic protective coating or physical barrier coating on the surface of

Seven precautions for the construction of large space frame engineering

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The design scheme of the large-span space frame structure should be determined by comprehensive analysis of the plan shape, span, support, load size, and architectural design of the project.The structural layout and support plate method should ensure that the structure has an effective force transmission method and overall stability. The plan structure shall be provided with a support system outside the plan. Inquiries: safsteelstructure.com/contact-us/ For the large-span space frame structure in the seismic area, the horizontal and vertical seismic action effects should be considered according to the seismic code. For the covering of the large-span space frame structure, the relative comfort requirements should be considered according to the use function. According to the structure of the long-span space frame structure and the way of connection points, the type of prefabricated components, and the load characteristics, and considering the relationship between the upper large-span s

Do large-span steel structure space frame need to be fireproof

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The long-span steel structure space frame usually loses its bearing capacity at a temperature of 450-650 °C, and undergoes great deformation, resulting in the bending of steel columns and steel beams, and cannot be used continuously due to excessive deformation. Generally, the fire resistance limit of unprotected steel structures is about 15 minutes. The length of this time is also related to the rate at which the component absorbs heat. In order to make steel structure materials overcome the deficiencies of fire protection in practical applications, fire protection treatment must be carried out. The purpose is to increase the fire resistance limit of the steel structure to the limit range specified in the design code. There are various measures to prevent the steel structure from deforming and collapsing due to rapid heating in a fire. The key is to take different methods according to different situations, such as using heat insulation and refractory materials to block the flame to d