The Analysis Of Efficiency For The Underprop System Of Steel Arch Planar Truss

For the planar truss of steel structure cover,in order to apron string the length of outerplane,the commonly design enchiridion for steel structure request setup some verticalbrace,and that arrive at guarantee truss.For the arch planar truss,at the engineeringpractice,some one will setup landscape orientation brace,purline and coign brace,connectthem one another according to holding the stabilization of the arch planar truss.But the actualeffect and the applicability of such modus operandi worth while to be investigated.This paper research some example of engineering,research the macrocosm stability ofthe arch planar truss in Finite Method,investigate the effect of the coign brace,compare theapplicabilith and budget of the examples,consequence some useful conclusion for the designof the underprop system of steel arch planar truss.