According　to　the　relevant　data　of　reinforced　concrete　pile　test　under　underwater　explosion　load　in　the　near-field　range　of　the　cooperative　company,　the　corresponding　numerical　model　is　established　through　the　explicit　finite　element　analysis　program　AUTODYN.　The　accuracy　of　the　required　parameters　and　the　calculation　method　in　the　numerical　simulation　process　is　verified　by　comparing　shock-wave　load　with　reinforced　concrete　pile　damage.　Considering　the　influence　of　charge　quality　on　the　dynamic　response　and　damage　mode　of　reinforced　concrete　single　and　group　piles,　the　collapse　conditions　of　the　high-pile　wharf　are　analyzed　from　static　and　dynamic　aspects　based　on　the　reinforced　concrete　pile　model　of　a　typical　high-pile　wharf　structure.　Results　show　that　the　reflected　pressure　of　shock　wave　is　unevenly　distributed　along　the　pile　with　different　explosive　equivalents,　that　is,　large　in　the　middle　and　small　on　both　sides.　The　damage　modes　of　single　piles　can　be　divided　into　bending,　bending　shear,　and　shear　failures.　The　study　of　the　continuous　collapse　condition　of　piled　wharf　reveals　that　the　concrete　pile　and　the　cap　contact　part　of　the　first　coagulant　crushing　failure.