This　paper　deals　with　elastic　shear　buckling　behavior　of　infill　panels　in　sinusoidally　corrugated　steel　plate　shear　walls,　and　fitting　equations　predicting　the　shear　buckling　loads　are　presented.　Firstly　by　using　finite　element　analyses　(FEA),　the　previous　formulae　for　bending　rigidities　of　sinusoidally　corrugated　plates　are　revised,　then　pure　shearing　model　are　established　to　study　the　effects　of　key　parameters　on　elastic　shear　buckling　of　sinusoidally　corrugated　infill　panels,　such　as　the　aspect　ratio,　corrugation　ratio,　corrugation　depth　to　plate　thickness　ratio　and　corrugation　repeating　number.　Based　on　extensive　FEA　numerical　results,　fitting　equations　with　good　accuracy　are　proposed　to　estimate　elastic　shear　buckling　loads　of　sinusoidally　corrugated　panels,　which　are　improved　much　compared　with　the　solutions　in　previous　studies.　It　is　found　that,　the　formulae　for　bending　rigidities　of　corrugated　plates　revised　in　this　paper　are　accurate　compared　with　the　previous　ones.　For　sinusoidal　corrugated　infill　panels,　only　global　buckling　and　local　buckling　can　be　observed　in　the　lowest　buckling　mode　of　eigenbuckling　analysis,　while　interaction　buckling　is　not　obvious.　The　parameter　of　corrugation　repeating　number　has　a　significant　influence　on　elastic　shear　buckling　loads,　whereas　it　was　neglected　in　previous　studies.　(C)　2016　Elsevier　Ltd.　All　rights　reserved.