感潮河段桥梁工程对河道行洪影响研究--以宁波惊驾路甬江大桥防洪论证

@sina.com1~U8.119581968197119834.35t14.1t0.541kg/m36.01kg/m31.732t1019512005200()Z1Z2Z2.582.5802.912.9102.822.8202.962.9602.952.950Z1Z2Z2.312.3150.0052.312.3150.0052.302.3050.0052.632.640.012.882.890.0150m()Z1Z2Z2.572.5702.902.9002.822.8202.962.9602.952.950Z1Z2Z2.302.3002.312.3102.302.3002.632.6302.882.880()Z1Z2Z2.572.5702.902.9002.822.8202.962.9602.942.9402.302.632.872.3152.652.89Z1Z2Z2.302.3150.0152.312.3250.0150.0150.020.022.572.902.822.962.942.5752.9052.8252.972.95()Z1Z2Z000.0050.010.012.302.312.302.632.872.2952.3052.2952.622.86Z1Z2Z-0.015-0.005-0.005-0.01-0.01Z12.572.902.822.962.94Z22.572.902.822.962.9450m()Z00000(m/s100m0.350.3500.260.26050m0.270.26-0.010.220.22020m0.220.20-0.020.180.17-0.010.210.26+0.050.170.20+0.0320m0.230.26+0.030.190.21+0.0250m0.250.27+0.020.200.21+0.01100m0.240.25+0.010.210.210150m0.200.2000.160.1600.490.4900.320.320[1][2][3][4][5][6][7][8]Studyontheeffectofthebridgeengineeringintidalreaches-TaketheFloodPreventionProjectofYongJiangbirdgeofJingjiaroadinNingbocityasexampleChunyiZhaoLijunZhuDepartmentofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing,PRC,210098NanjingHydraulicResearchInstitute,Nanjing,PRC,2100241.AbstractInthispaper,flowstructuresaroundthepierinthetidalreacheswereanalyzedandtheeffectofthebridgesintidalreachesonriverflooddischargecapacitywasstudied.BasedontheFloodPreventionProjectofYongRiverbirdgeofJingjiaroadinNingbocity,wecarriedoutfixed-bedmodeltestandmeasuredthechangeofthewaterlevelandvelocityaftertheprojectandthenmadethefloodevaluation.Thisprovidesscientificguidancefortheriverbankprotectionandmanagement.TheYongjiangBridgeofJingjiaroadtobeconstructedwillbelocatedinthedownstreamofYongRiverand640farawayfromthebridgeupstreamandthepierwilllocateintherightalternatebar.Thefixed-bedmodeltestshowsthatthewaterlevelinfluencerangeofthepieris120mupstreamtothefrontareaofthepier.Themaximumwaterlevelis0.02m.Thebridgejusthaseffectontheflowfield100maroundthepierandhaslittleinfluenceonthefloodcontrol.Keywords:Tidalreaches;Hydraulicmodeltest;pier;Preventorcontrolflood;Riverregime1983