Widely-graded　gravelly　soil　is　composed　of　gravelly　and　clayey　material　in　a　certain　proportion.　It　has　the　characteristics　of　low　compressibility　and　high　shear　strength.　At　present,　it　is　widely　used　as　the　core　material　for　embankment　dams　and　subgrade　filling.　Due　to　the　low　permeability　of　well-graded　gravelly　soil,　the　consolidation　process　is　slow　in　conventional　consolidated-　drained　(CD)　triaxial　tests,　resulting　in　a　long　test　period.　In　order　to　improve　the　efficiency　of　consolidation　process,　a　quick　triaxial　CD　test　method　with　cylindrical　sand　core　in　the　center　of　specimen　is　proposed　in　this　paper.　A　comprehensive　study　on　the　influence　of　various　factors　on　the　quick　triaxial　CD　test　of　well-graded　gravelly　soils　is　performed　by　changing　types　of　sand　cores,　diameters　of　core　sand　cylinder　and　gravel　contents.　Results　show　that　the　proposed　quick　triaxial　CD　test　method　can　effectively　accelerate　the　consolidation　process　of　the　specimen,　thus　speeding　up　the　whole　test.　Various　factors　including　type　of　sand　core,　diameter　of　core　sand　cylinderand　gravel　content　show　different　levels　of　influence　on　the　speed　of　consolidation　process　and　the　stress-strain　curve　in　the　subsequent　shearing　stage.　The　smaller　the　diameter　of　the　sand　core　is,　the　closer　the　test　results　are　to　those　of　specimens　without　sand　cores.　©　2021,　Science　Press.　All　right　reserved.