现浇钢筋混凝土空心板无梁楼盖弯矩分析

1,2(1,250023;2,250101):,2,,,:;;;:TU756.4:A:1672-0032(2005)04-0048-04:2005-08-26:(1979-),,,,.GBF,[1],GBF,GBF19968,,,,,,11.11,,[2],,,,23.5,,1.2,2,,,21,134200512JOURNALOFSHANDONGJIAOTONGUNIVERSITYVol.13No.4Dec.20057.2m7.2m,250mm,D=150mm,11,2-2iy,1-1ix,6.6m,7.8m,8.2m,9.0m,211/mix/mm3iy/mm3ixiy/%6.611605881032924100.89027.37.21188185105208310.88528.87.81531141131371910.85830.98.21628240136120810.83632.09.01962020161081810.82135.2,,,,20%,,,,,,,,22.1,M0,M0,,[3]M0=ql2l21/8,l1;l2,[4],,-0.67M0,+0.33M0,,,[4],,,,75%,25%;,55%,45%,M02.22,,[5]t,,t=EcbIt/(2EcsIs),It;Is;Ecb;Ecs,,,,;,t,t=0,100%;t2.5,;0t2.5,4:49,98.54%1.46%;75%25%,,2.3,,,22%75985575557525245254525,,,-0.39M0,0.47M0,-0.67M0;,3-0.42M0,0.46M0,-0.67M0,3,4[5]34,,,3-0.32M0-0.38M00.26M0-0.50M00.18M0-0.50M0-0.10M0-0.01M0-0.21M0-0.17M0-0.15M0-0.17M04-0.33M00.26M0-0.50M00.18M00.50M0-0.04M00.22M00.17M00.15M0-0.17M0,,3,,,,,,:[1].[P].:ZL992329221,2000-01.[2].[J].,1999,(2).[3]GBJ13O90,[S].[4],,.[M].:,2001.66-80.[5],.[M].:,1992.87-106.5020051213AnalyzingDesignMomentofCast-in-PlaceReinforcedConcreteHollowFlat-PlateFloorGAOXi-guang1,ZHAOYu-xing2(1.DepartmentofMathematicsandPhysics,ShandongJiaotongUniversity,Jinan,250023,China;2.SchoolofCivilEngineering,ShandongUniversityofArchitecturalEngineering,Jinan,250101,China)Abstract:Thecast-in-placereinforcedconcretehollowflat-platefloorisanewtypeofflat-platefloor.Thetwo-waystiffnessratioofhollowslabsareanalyzedaftertheholeformingofprelaidpipes.Then,thecalculationmodelandmethodofthecast-in-placereinforcedconcretehollowflat-platefloorisdiscussedtodeterminethedesignmomentdistributionproportionbetweenthecolumntripandthemiddletripofthehollowslab.Finally,thedesignmomentdistributionvalueofthehollowflat-plateflooriscalculatedbyusingtheempiricalcoefficientmethod.Keywords:reinforcedconcrete;hollowslab;flat-platefloor;designmomentdistribution(:)(35)TheFrameworkResearchandDesignofInformationPlatformintheFourthPartyLogisticsLIZuo-wei,ZHOUYing-bing,WANGDe-li(DepartmentofInformationEngineering,ShandongJiaotongUniversity,Jinan,250023,China)Abstract:Fromtheperspectiveofthe4thpartylogisticstechnologymodel,thispaperstatesclearlythestatusandroleplayedintheeconomy,presentstheoperationflowofthe4thpartylogisticsserviceproviders,establishesthesystemstructureofthelogisticsinformationplatform,anddesignsitsnetworkandsoftwarestructurebasedontheinternet,whichoffersthebasicframeworkforthedesignandimplementationofthelogisticsinformationplatform.Keywords:the4thpartylogistics;model;supplychain;informationplatform(:)(44)ResearchOverviewoftheDamageConstitutiveTheoryonRockLIUYang,ZHAOMing-jie(1.SchoolofRiverandOceanEngineering,ChongqingJiaotongUniversity,Chongqing,400074,China)Abstract:Thisarticledescribesthepresentresearchconditionofthedamageconstitutivetheoryonrockfromsuchaspectsasthemicroscopicmodel,exiguousmodel,macroscopicmodel,continuousdamagetheory,geometrydamagetheory,fractaldamagetheory,damagetheorybasedonCT,anddamagetheorybasedonultrasonic,andthenpresentsauthorsopinionsaboutsomeproblemsinthepresentresearch.Keywords:rock;damage;constitutivetheory(:)4:51