抗灾基站单管塔的横风向风振分析

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455。300mm、、。【】【1】GB50007-2002[S].【2】GB50009-2001[S].【3】GB50011-2001[S].【4】.[K].1998.【】2010-01-07(1970~)baittian0331@sohu.com。【】。【】【】TU279.7+4TU352.2【】AAnalysisofAcross-windResonanceofDisaster-relietCommunicationMonoplleTUHai-ming,SHIGuo-fu,QUYing-jie(ArchitecturalDesign&ResearchInstituteofTongjiUniversity(Group)Co.,Ltd.,Shanghai200092,China)【Abstract】Basedonthetheoryofacross-windresonance,thisarticleproposestheacross-windresonanceofhighervibratorymodeofcommunicationmonopolescan'tbeneglected.Acalculationexampleofdisaster-reliefcommunicationmonopoleisgiventoshowthenecessityinthestructuralanalyses.【Keywords】disaster-reliefcommunicationmonopole;Across-wi【】1007-9467201003-0013-03■,200092ArchitecturalandStructuralDesign13ndResonance。。。1。Vortex-shedding、Galloping、Flutter、Buffeting。。,fsυD。ReStSt≈0.2。Re≤3×105fs,3×105≤Re3.5×106Re≥3.5×106。15m/s。。,。4。wAz=βzμs·μz·w0(1),βzzμzzμs0.6w0,kN/m2。jwcz,jwcz,j=λj·vcr,j2·φz,j/(12800ζj)(2)H1=H·vcr,j1.2vH≥≥1/α(3)Re=69000·v·D(4)vcr,j=D/Si·Tj=5D/Tj(5)VH=40·μH·w0姨(6)λjH1/Hvcr,jj,m/sφz,jzjξjj0.02H1,mH,mαB0.16VHHm/sD2/3。SSASCS=SA2+SC2姨(7)22008。、、、4。ArchitecturalandStructuralDesign140.55kN/m20.9kN/m2。46m43.0m37.5m23.6m4.0m。Q235B6。7.95m、9.94m、7.96m、7.96m、5.89m、6.3m20mm、20mm、16mm、14mm、12mm、10mm。0.90m1.59m。1。3。、。2/31.13m5Re。Bα=0.16H=46mμ=1.636VH。1。13×105Re3×106Re3×1061.2VHvcr,j、。。βz=2.26μz=1.631wAH=2.26×0.6×1.63×0.9=1.99kN/m2H1=46×47.1/1.2×48.41/0.16=12.4mH1/H=0.27λj=0.14wcH,3=0.14×47.12×1.0/(12800×0.02)=1.21kN/m2kN/m2wH=w2AH+w2CH,3姨=1.992+1.212姨=2.33kN/m2>1.99kN/m2。4。【】【1】.[M].,2008.【2】..-:,1992.【3】GB50009-20012006[S].【4】GB50135-2006[S].【5】CECS2362008[S].【6】.[J]..2004(3):57-59.【】2009-11-241975~tuhaiming2002@163.com。12345T/s1.370.30.120.0640.038V/(m/s)4.118.847.188.3148.7Re3.2101.5103.7106.9101.210V/m/s48.448.448.448.448.41ArchitecturalandStructuralDesign15

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