我国高层及超高层建筑的基本自振周期-沈蒲生

441820149BuildingStructureVol．44No．18Sep．2014410082302。MATLAB。、、《》GB50009—2012。。。TU973A1002-848X201418-0001-03Fundamentalnaturalperiodofhigh-riseandsuperhigh-risebuildingsinChinaShenPushengZhangChaoYeJinyaoHeYibinCollegeofCivilEngineeringHunanUniversityChangsha410082ChinaAbstractInordertoimprovethepracticabilityofestimationformulaforthefundamentalnaturalperiodofhigh-riseandsuperhigh-risebuildingsanewestimationformulaforfundamentalnaturalperiodhasbeenestablishedbyMATLABdataof302constructedandunder-constructionhigh-risebuildings．BesidesthenewformulawascomparedwiththeestimationformulafromUnitedStatesEuropeJapanandLoadcodeforthedesignofbuildingstructuresGB50009—2012．Theresultsshowthatthenewestimationformulaforthefundamentalperiodofhigh-riseandsuperhigh-risebuildingsismoreaccurateandreasonable．Atlasttheappropriatefundamentalnaturalperiodforhigh-riseandsuperhigh-risebuildingswasdiscussed．Keywordshigh-riseandsuperhigh-risebuildingfundamentalnaturalperio[e-mail]。0。。300m。。MATLAB。、、、。。11.1、、1。1。。。T1。2T1=2πψTmψψTk槡ψ1ψkm。22014。1T1=2πMzh槡δ2Mzh=∑ni=1mix2ix2m3Mzhδmiixiixm。3。3T1=1．7Δ槡n4Δn。。。。1.2。。《》GB50009—20124。T1=0．10～0．15n5T1=0．05～0．10n6n。-T1=0．25+0．53×10－3H23槡B7T1=0．03+0．03H3槡B8HB。FEMA4505T1=0．0724H0．89T1=0．0466H0．910T1=0．0731H0．7511T1=0．0488H0．7512ASCE7-106T1=0．0450H0．813T1=0．0230H0．914T1=0．0133H157T1=0．085H3/416、T1=0．075H3/417T1=0．050H3/4188T1=0．020H19。。2302。10～20224418．30～727m727m2014468、-、、-、、。、、。。。。1。--、。1。MATLAB。H≤210mT1=－1．36×10－5H2+0．0282H－0．095820H＞210mT1=－8．20×10－6H2+0．0164H+2．12211。830mFEMA450512ASCE7-10615718819。1100m。/s1/m8121518190～500.1440.6120.2690.4920.2530.23551～1000.5261.5081.0501.2441.0210.759101～1500.5362.0521.4941.6251.4520.846151～2000.6262.7812.1782.1852.1221.102201～2500.7163.0602.4492.2922.3820.967251～3000.8003.7583.1622.8053.0831.140301～8000.7413.4072.9882.0642.8831.719《》JGJ3—20109《》GB50011—201010、。。。910。2。2910。20212/m50100150200300400500600700800/s1.2802.5883.8285.0006.3027.3688.2709.0069.5829.9923302。3832014+1845.12mm45.12/30000=1/665＜1/250。18/mm91、。2、。-、。、。3412m17m、。、。4。致谢:衷心感谢齐五辉总工、杨蔚彪总工对本工程的悉心指导。12010109S．2010．2GB50011—2010S．2010．3JGJ3—2010S．2011．4．M．200544-54．31。2。3。1．M．2002．2CHOPＲAAK．DynamicsofstructuresM．NewJerseyPrenticeHall1995．3．M．1990．4GB50009—2012S．2012．5FEMA450NEHＲPrecommendedprovisionsforseismicregulationsfornewbuildingsandotherstructuresS．WashingtonD．C．NationalInstituteofBuildingSciences2004．6ASCE7-10MinimumdesignloadsforbuildingandotherstructuresS．ＲestonAmericanSocietyofCivilEngineers2010．7Eurocode8DesignofstructuresforearthquakeresistanceS．BrusselsEuropeanCommitteeforStandardization2003．8．J．198222556-61．9JGJ3—2010S．2011．10GB50011—2010S．2010．83