The　real　juncture　between　corrugated　steel　webs　(CSWs)　and　flanges　follows　a　multi-segmented　line,　distinct　from　that　of　flat　steel　webs.　Classic　methods　may　yield　significant　deviations　in　predicting　the　elastic　global　shear　buckling　capacity　of　CSWs　of　various　scales　due　to　their　failure　to　consider　real　boundary　constraints.　Therefore,　a　universally　applicable　formula　for　calculating　the　elastic　critical　global　shear　buckling　stress　of　CSWs,　which　accounts　for　real　boundary　conditions,　is　proposed.　This　formula　is　pertinent　to　both　large-scale　engineering　CSWs　and　small-scale　testing　CSWs.　This　study　commenced　with　a　comprehensive　reassessment　of　the　elastic　global　shear　buckling　calculation　method.　Subsequently,　the　influence　of　geometric　parameter　ratios　on　the　elastic　critical　global　buckling　stress　was　examined.　The　primary　parameter　was　identified　and　employed　to　improve　the　global　buckling　coefficient.　The　proposed　calculation　method　was　validated　using　different　corrugation　configurations,　including　1000-type,　1200-type,　1600-type,　1800-type,　and　2000-type　CSWs,　as　well　as　other　CSWs　used　in　experimental　settings.　These　results　were　compared　with　those　obtained　from　other　reference　methods.　Findings　indicate　that　the　accuracy　of　the　classic　theoretical　method　is　affected　by　variations　in　both　boundary　conditions　and　geometric　dimensions　due　to　the　constraint　effect　of　real　boundary　conditions.　Under　the　real　boundary　conditions,　the　elastic　critical　global　shear　buckling　stress　of　CSWs　with　simply　supported　boundary　conditions　is　close　to　that　of　CSWs　with　consolidated　boundary　conditions.　The　ratio　of　web　height　to　corrugation　depth　primarily　affects　the　elastic　global　shear　buckling　capacity,　which　decreases　as　the　ratio　increases.　The　Easley　formula　can　be　modified　based　on　the　web　height　to　corrugation　depth　ratio.　Comparisons　of　numerous　numerical　and　theoretical　results　reveal　that　the　proposed　calculation　method　exhibits　commendable　computational　precision.　In　comparison　to　alternative　formulas,　the　proposed　method　demonstrates　enhanced　consistency　for　calculating　CSWs　with　varying　geometric　dimensions　and　boundary　conditions,　thereby　demonstrating　its　favorable　applicability.　These　conclusions　provide　valuable　reference　for　the　shear　design　of　CSWs.　©　The　Author(s)　2024.