Purlin is subjected to lateral support and torsional constraint from the roof sheeting in practical applications.This is so-called bracing effect of skin diaphragms.This can effectively reduce the costs of engineering design.However,the current design standard for the bearing capacity of purlin braced by skin diaphragm under wind suction is too complicated and this reduces design efficiency significantly.This paper introduces a classic finite element model,then four parameters are studied under wind suction...
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