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What is a shear key in steel structures?

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 In steel structure engineering , the column base connection serves as the pivotal interface linking the superstructure to the concrete foundation below. It must safely and reliably transmit various loads from the upper structure: vertical pressure , uplift forces , bending moments , and horizontal shear forces . When horizontal shear forces become substantial, the friction alone between the column base plate and the concrete foundation surface proves insufficient to resist them. At this juncture, a critical small component becomes indispensable—the shear key . Shear keys, as the name suggests, are structural steel connection components specifically designed to resist and transmit horizontal shear forces. Essentially, they are short steel members. Installation location: Typically welded or anchored to the base plate of a steel column (or other load-bearing components such as equipment supports ), with its lower end embedded in the concrete foundation or concrete structure cast ...
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The necessity of net frame construction

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 Modern construction industry needs advanced engineering technology to support,space frame engineering construction has become an indispensable part of it. space frame engineering construction needs to have professional team and facilities, modernized space frame processing plant naturally becomes an indispensable condition. The purpose of this paper is to introduce the modernization of the characteristics of network frame processing plant, technology and engineering construction needs.

First, the characteristics of modern network frame processing plant

Modernized space frame processing plant usually uses CAD software for design and drawing, advanced machinery and equipment to achieve fast and accurate processing, such as CNC bending machine, CNC shearing machine, CNC cutting machine, CNC punching machine and so on. Among them, the addition of CNC equipment greatly improves production efficiency and product quality, and improves the competitiveness of products in the industry. In addition, modern space frame processing plants are also equipped with professional inspection equipment, such as three-coordinate measuring machine, etc., to ensure the quality of products.



Second, the necessity of space frame project construction

The purpose of space frame engineering construction is to ensure the stability and safety of the building. Nowadays, the environment and changing conditions faced by the construction industry are becoming more and more complicated and uncertain, so there is a need for more delicate, efficient and safe space frame engineering construction.

● Improve construction efficiency

The traditional construction mode requires construction workers to make and process by hand, which has problems such as low accuracy, heavy workload and low efficiency. However, modern space frame processing factory uses CAD software for modeling and adopts CNC machine equipment for production, which greatly improves the construction efficiency.

● Improve product quality

Utilizing advanced design and production software, compared with traditional manual operation, CNC machine reduces the error compared with manual processing, and can produce more standardized and accurate space frame products. In addition, the quality control and management of the products are more strict, such as the calibration and test of the nodes and reinforcement of large-scale space frames in full size and load-bearing performance.

● Better Safety Guarantee

There are often some safety hazards in the construction site, such as workers working at height, lifting and hanging of objects, and so on. Instead, using the space frame products produced by the modern space frame processing plant, all the work is carried out on the safe ground, thus reducing the number of overhead work and lowering the risk of workers.

Third, the process of space frame engineering construction

space frame engineering construction is divided into three stages: design preparation, processing and manufacturing, and assembly construction:

● Design preparation stage: carry out space authentication, analysis of topography and geomorphology, analysis of meteorology, climate and other environmental factors, determine the construction site, draw construction drawings, and carry out simulation and verification.

● Processing and manufacturing stage: Processing of the space frame structure according to the design drawings, using CNC equipment for high-precision processing and production.

● Assembly construction stage: Installation and assembly of the space frame at the site, using machinery for lifting and positioning to complete the installation of the space frame structure.

Conclusion

Modern space frame processing plant is gradually becoming a standard in the construction industry, which is characterized by standardization, specialization and automation, and the design, production, inspection and delivery processes are subject to corresponding quality control. Modernized network frame processing plant plays an unignorable role in the construction of network frame project, and it is of great significance to improve the efficiency and safety of network construction.

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What is the difference between a single-layer reticulated shell and a double-layerreticulated shell?

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