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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 ...

Steel Space Frame Coal Shed Construction

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.

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