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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 ...

What are the performance characteristics of the various core materials of colour steel composite panels?

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  Introduction to the performance of various core materials of colour steel composite panels (1) Foam board From the optional polystyrene (EPS) particles as raw materials, shape like fertilizer particles, pre-foaming by heating, into a white pearl-like larger particles, and then heated in the mold and pressed into shape and made with micro-fine closed-cell structure of the foam plastic sheet. (2) Polyurethane High energy-saving performance Excellent fireproof and thermal insulation properties of the material, used to do composite panels of polyurethane capacity of 30 kg - 40 kg in general (3) Rock wool board It is made of basalt as the main raw material, melted at high temperature and then made into inorganic fibres by high-speed centrifugal equipment, while evenly adding a certain proportion of adhesive baked into a large board, cut into rock wool strips according to production needs, rock wool is a non-combustible body with good fire performance. (4) Glass wool It is a light, hea...

Color Steel Composite Plate Various Plate Performance Introduction

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Color Steel Composite Plate Various Plate Performance Introduction Galvanised sheet (1) Color coated plate The base plate is hot galvanized or aluminized zinc plate, there is also the use of electro-galvanized base plate, surface paint by bending does not fall off. For composite plate with colour steel plate is generally two coating a baking (two coating a), and two coating two baking (two coating two) or there are quality problems such as loose edge serious, middle loose heart, leakage of coating, large serrated edge, serious oval, uneven and so on can not be used for the production of composite plate. (2) Galvanised sheet Bad bonding effect is sometimes not very good and needs to be dealt with. (3) Stainless steel plate Good corrosion resistance, toughness is difficult to process; bonding effect is sometimes not good, need to deal with. (4) Aluminium foil Reinforced aluminium foil is a composite material with glass fibre reinforcement between aluminium foil and kraft paper, with func...

Advantages Of Arched Buildings

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 Advantages Of Arched Steel Structure Buildings arch roof Advantages of the arch steel structure : 1) The arch and the characteristic that the arch structure is subject to stronger pressure than the crossbeam.   2) When the arch is subjected to pressure, it can transmit the downward pressure downwards and outwards to the adjacent parts.   3) The arch will generate outward thrust when each part of the arch is subjected to pressure. If the outward thrust of the arch can be resisted, the arch will be able to withstand great pressure. ________________________________ Whatsapp: +86/13056227515 E:safs126@safsteelstructure.com Website:www.safsteelstructure.com/

Comparison Of Welded And Bolted Ball Netting Structures

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  Comparison of welded and bolted ball netting structures space frame Analysis in terms of quality assurance. 1, welded ball structure using hollow ball (material Q235 ordinary steel) and welded pipe on the site of the welding, by the temperature and wind speed, under the influence of the welding machine equipment and basic artificial manual, resulting in the material, positioning, welding process, error, low precision. The steel has stress deformation before and after welding, which is a safety hazard. The angle control between the various bars is not accurate after use, which can easily distort the bars and destroy the balance of force transmission. It is not possible to adapt to the requirements of shaped curves and oversized spans, and the quality is difficult to guarantee, so there are great limitations. 2、Bolt ball structure is made of solid ball (material 45# high strength steel) and high strength bolt (material 40Cr), which are closely jointed. The angle between the screw ...

Bolt Ball Testing Methods

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  Bolt Ball Testing Methods bolt ball 1, bolt ball and manufacturing bolt ball nodes need materials, its varieties, specifications, performance, etc. should comply with national product standards and design requirements. Inspection methods: check the quality of the product qualified documents, Chinese signs and inspection reports, etc. 2 、 Bolt ball shall not have burn, crack and crease. Inspection method: Sample part of each specification of bolt ball, observe with 10 times magnifying glass and surface inspection. 3, bolt ball thread size and thread tolerance should be in line with the current national standard provisions. Inspection method: check a part of each specification of the bolt ball and measure it with a standard thread gauge. 4, bolt ball diameter, roundness, adjacent two bolt hole centre line angle and other dimensions and allowable deviation should be in line with the local steel structure acceptance regulations. 5 、 Inspection method: Sample a portion of each speci...

Prefab Space Frame Warehouse Building

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 Prefab Space Frame Warehouse Building  space frame warehouse space frame warehouse space frame warehouse Project span: 53.2m Project length: 216m Total construction area: 11,492 sqm Project features: square quadrangular conical space frame with multi-point lower chord support ___________________ Whatsapp/Tel: 17712952852 E-mail:safs121@safsteelstructure.com Website:www.safsteelstructure.com/

Steel Space Frame Coal Shed Construction

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Steel Space Frame Coal Shed Construction  space frame coal shed steel structure roof design Key and difficult points of the project: (1) The coal storage on the construction site is large, and the normal production must be ensured during the construction process. (2) The forms of steel space truss are diverse. It is difficult to start, high installation height and large amount of steel. (3) Complex processes and large quantities. (4) There are many high-altitude operations, heavy lifting workload and more cross operations in site construction. ———————————————— We have many coal bunker projects. If you have similar projects, please feel free to contact us. Whatsapp/Tel: 17712952852 E-mail:safs121@safsteelstructure.com Website:www.safsteelstructure.com/