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目前显示的是 十月, 2025的博文

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How to Choose the Right Steel Structure for Your Workshop

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  Choosing the right steel structure for your industrial workshop is key to production efficiency, safety, and long-term cost control. Many buyers only focus on upfront price, but ignore important details that can lead to problems later. The best steel structure is the one that fits your actual production needs. Here are the most important points to help you make the right choice. 1. Match Your Production and Equipment Needs Heavy machinery workshops need stronger steel with higher load-bearing capacity to support equipment weight and vibration. Light processing workshops can use more economical light steel structures. You should also plan space for forklifts, production lines, and overhead cranes in advance. 2. Consider the Right Span and Height Large-span steel structures reduce the number of internal columns and create more open space. The height must fit your equipment, crane systems, and future upgrades. Leaving extra height during design is much cheaper than rebuilding l...

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 ...

How do China, the United States and Europe account for accidental eccentricity in seismic design?

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  Regulations and Methods for Considering Accidental Eccentricity Effects in Seismic Design in China, the United States and Europe 1. Regulatory Basis ● China The Code for Seismic Design of Buildings (GB 50011-2010) stipulates that accidental eccentricity must account for uncertainties in structural mass distribution, stiffness distribution, and spatial variations in seismic motion. Torsional effects shall be calculated using either static or dynamic methods. ● United States ASCE 7-22 (American Society of Civil Engineers Standard) requires consideration of accidental torsional effects, typically calculated using static methods, with verification through dynamic analysis results. ● Europe Eurocode 8 (EN 1998-1:2004) simulates the misalignment between mass centres and stiffness centres by introducing accidental eccentricity, and mandates consideration of the effects of bidirectional seismic actions . 2. Definition and Values of Random Eccentricity ● China Eccentricity: ±5% of the ...