the development history and future of steel structure 土木工程专业英语论文

20122013学年第二学期专业英语考试论文姓名XXXXXXX学号XXXXXXXXXXX院系土木工程与建筑系专业土木工程年级XXXXXXXXXXXXXX任课教师XXXXXX2013年6月18日THEDEVELOPMENTHISTORYANDFUTUREOFSTEELSTRUCTUREABSTRACTMORETHAN30YEARS,THEMODERNBUILDINGMATERIALSBYUSINGSTEEL,GLASS,MEMBRANEMATERIALSANDTHECORRESPONDINGSTRUCTURE,CONSTRUCTIONTECHNOLOGYANDCONSTRUCTIONPROCESSOFBUILDINGUPTHESTEELSTRUCTUREBUILDING,COMPLETELYCHANGEDTHEPREVIOUSARCHITECTUREMODEL,IDEAANDMETHODOFARCHITECTURALDESIGNWILLCHANGESTEELISAHIGHSTRENGTH,HIGHPERFORMANCEMATERIALSWITHVERYHIGHVALUE,RECYCLING,SCRAPHASVALUESEISMICPERFORMANCEOFSTEELSTRUCTURE,FLEXIBLEUSE,CONSTRUCTIONISNOTCONSUMEWOOD,STEELTEMPLATEANDWATERMASS,ALSOWONTPRODUCESTRONGNOISEANDAIRPOLLUTIONCOMPAREDWITHOTHERSTRUCTUREOFCONCRETEFILLEDSTEELTUBESTRUCTURE,HAVINGTHEADVANTAGESOFHIGHBEARINGCAPACITY,DUCTILITYANDSEISMICPERFORMANCE,MATERIALSAVINGANDCONVENIENTCONSTRUCTIONCHARACTERISTICSFORHIGHRISEBUILDING,THESECHARACTERISTICSAREPARTICULARLYPROMINENT,CHINAINTHISFIELDHASBEENINALEADINGPOSITIONKEYWORDDEVELOPMENTSTEELSTRUCTUREBUILDINGMATERIAL摘要30余年来，利用钢格、玻璃、膜材等现代建筑材料及相应的结构、构造技术与施工工艺建筑起来的钢结构建筑，彻底改变了以往建筑造型的模式，建筑设计的理念与方法亦随之嬗变。钢材是一种高强、高效能的材料，具很高的再循环价值，边角料也有价值。钢结构抗震性能好，使用灵活，施工时既不需要耗费大量的木材、钢模板和水，也不会产生强的噪音与空气污染。钢管混凝土结构与其它结构相比，具有承载力高、塑性和抗震性能优越、节省材料和施工简便的特点。用于高层建筑中，这些特点尤为突出，中国在此领域已处于领先地位。关键词发展钢结构建筑材料INTRODUCTIONBREAKTHROUGHPROGRESSOFCONSTRUCTIONSTEELWASSTARTEDINNINETEENSIXTIESMORETHAN30YEARS,THEMODERNBUILDINGMATERIALSBYUSINGSTEEL,GLASS,MEMBRANEMATERIALSANDTHECORRESPONDINGSTRUCTURE,CONSTRUCTIONTECHNOLOGYANDCONSTRUCTIONPROCESSOFBUILDINGUPTHESTEELSTRUCTUREBUILDING,COMPLETELYCHANGEDTHEPREVIOUSARCHITECTUREMODEL,IDEAANDMETHODOFARCHITECTURALDESIGNWILLCHANGETODAY,TECHNOLOGYINTEGRATIONANDSUSTAINABLEDEVELOPMENTCONCEPTHASWINSUPPORTAMONGTHEPEOPLE,BYTHESTEELSTRUCTURETECHNOLOGYASTHEBASICMEANS,FOCUSONTHEMATERIALCHARACTERISTICSANDTECHNICALPERFORMANCEOFTHEARCHITECTURALCREATIONTENDENCYHASBECOMETHETRENDOFTHETIMESCOMPAREDWITHFOREIGNCOUNTRIES,THEDEVELOPMENTOFSTEELSTRUCTUREBUILDINGINCHINAISRELATIVELYBACKWARD,INCHINASSTEELPRODUCTIONHASRANKEDFIRSTINTHEWORLD,STEELSTRUCTUREBUILDINGBASICCONDITIONSMATUREPREMISE,STEELSTRUCTURETECHNOLOGYHASNOTBEENEFFECTIVEPROMOTION,AREWORTHMEDITATIVEATPRESENT,THEARCHITECTURALDESIGNINDUSTRYINOURCOUNTRYISGENERALLYINSUFFICIENT,UNDERSTANDINGOFSTEELSTRUCTURECONSTRUCTIONIDEAISBACKWARDNOTHIGHENTHUSIASMFORTHESTEELSTRUCTURESYSTEM,MANAGEMENTANDNOTHESEARESERIOUSOBSTACLESTOTHESTEELSTRUCTUREINTHEFURTHERDEVELOPMENTOFOURCOUNTRY1THEDEVELOPMENTHISTORY,FOREIGNSTEELSTRUCTUREBUILDINGMETALSTRUCTUREWASFIRSTUSEDINBUILDINGHOUSESCANBETRACEDBACKTOEIGHTEENTHCENTURYISNOTENGLISHBECAUSEATTHATTIMETHECOTTONMILLFREQUENTFIRES,SOTHEIRONINTHEFRAMEWORKOFBUILDINGSTRUCTURE100YEARSLATER,THEUNITEDSTATESOFCHICAGOSCHOOLHASBUILTANUMBEROFSTEELSKYSCRAPERS,FRENCHENGINEEREIFFELBUILTTHEFAMOUSTOWER,METALBUILDINGHASNOWENTEREDTHEFIRSTGLORIOUSERAATTHATTIME,PEOPLEBUILTTHEMETALSTRUCTUREOFTHESINGLEFAMILYHOUSING,SOMEMETALHOUSING,STILLINGOODCONDITIONINMORETHANHALFACENTURYLATER,THERISEOFTHEREINFORCEDCONCRETESTRUCTURE,METALLOSTITSREPUTATIONANDCHARMINTHEARCHITECTURALFIELD,MAINLYUSEDFORTHECONSTRUCTIONOFFACTORIES,SUCHASHANGARSSTEELSTRUCTUREBUILDINGINTHENINETEENSIXTIESBEGINAGAINWITHNEWDEVELOPMENTCONSTRUCTIONSTEELTOBEABREAKTHROUGH,COMPUTERSHAVEALSOBEGUNEARLYAPPLICATION,ALLTHESTRUCTURESYSTEMSOFMETALBUILDINGISBECOMINGMOREANDMOREMATURE70INTHEFRENCHPOMPIDOUCULTURALCENTERBUILT,HIGHTECHTRENDBEGANTOAPPEARTOTHE80,90TIME,RENAULTAUTOPARTSDISTRIBUTIONCENTER,HONGKONGHSBC,THEFRENCHLYONAIRPORTTGVRAILWAYSTATION,KANSAIINTERNATIONALAIRPORT,THESTEELSTRUCTURETOANEWHIGHDEGREEATTHESAMETIME,THEARCHITECTSINTHESMALLPROJECT,THESTEELSTRUCTURETECHNOLOGYPLAYEDMOSTINCISIVE,SUCHASTHEDESIGNOFFRANCEARCHITECTURESTUDIOSTUDENTRESTAURANT,JULESVARNA,THEUNITEDSTATESOFAMERICAABCCOMPANYMANUFACTURINGHIGHRESIDENCEINPARTICULAR,THEWESTERNDEVELOPEDCOUNTRIESHAVEPUTFORWARDAPROJECTOFMETALBUILDINGCONCEPT,PREENGINEEREDMETALBUILDINGREFERSTOABUILDINGSTRUCTUREISDIVIDEDINTOSEVERALMODULESISPROCESSEDINFACTORY,SOTHATTHEDESIGN,MANUFACTUREANDINSTALLATIONOFSTEELSTRUCTUREBUILDINGTOINTEGRATION,WHICHGREATLYREDUCESTHECOSTOFCONSTRUCTIONSTRUCTURE10LOWERTHANTRADITIONAL20,SHORTENTHECONSTRUCTIONPERIOD,THECOMPREHENSIVEADVANTAGESOFSTEELSTRUCTUREAREMOREOBVIOUSINTHENEWSTRUCTURE,MANYCOUNTRIESHAVEINCREASEDRESEARCHEFFORTS,NOWHASBEENBUILTOVERASPANOF1000MULTRALARGEDOMEANDAHEIGHTOFMORETHAN1000MUPTO4000MOFSUPERTALLBUILDINGALSOTHEREAREALOTOFLARGESPANANDSPACESTEELSTRUCTURE,BUILTIN1989,THECANADIANTORONTOSKYDOME,SPAN205M,CANACCOMMODATE70000PEOPLE,ROOFISCLOSEDTOALLCLOSEDWITHAIRCONDITIONINGSTADIUMBUILTIN1993,JAPANFUKUOKAINDOORSTADIUM,222MINDIAMETER,ISOPENINGSPACESTEELSTRUCTUREOFCONTEMPORARYWORLDSLARGESTDEVELOPMENTOFMEMBRANESTRUCTURESALSOATTRACTPEOPLESATTENTION,BUILTIN1992INTHEUNITEDSTATESOFAMERICAATLANTAOLYMPICGAMESMAINSTADIUM“THEGEORGIADOME“,PLANESIZEIS240M193M,ISTHEWORLDSLARGESTSPANCABLEHYBRIDSTRUCTURESANDMEMBRANEROOFDUETOTHEPROGRESSOFSCIENCEANDTECHNOLOGYDEVELOPMENTANDTHEQUALITYOFTHEIMPORTANCEOFSTEEL,STEELSTRUCTUREISAFFIRMEDBYTHEADVANCEDCOUNTRIES,INEUROPE,AMERICA,JAPAN,TAIWAN,PLANTCONSTRUCTIONWITHSTEELSTRUCTUREINSOMEADVANCEDCITY,BUILDINGS,BRIDGES,LARGEPUBLICWORKS,BUTALSOTHEUSEOFSTEELSTRUCTUREBUILDINGINRECENT10YEARS,INTHEUNITEDSTATES,ABOUT70OFTHENONRESIDENTIALANDTWOLAYERSANDTHEFOLLOWINGBUILDINGSAREUSEDINLIGHTSTEELPORTALFRAMESYSTEM2CHINASSTEELSTRUCTUREBUILDINGDEVELOPMENTTHEAPPLICATIONOFSTEELSTRUCTUREINOURCOUNTRYHASALONGHISTORYAD60YEARSBEGANTOBUILDANIRONCHAINBRIDGE,THEMOSTFAMOUSISTHEDADURIVERINLUDINGBRIDGE,HASFULLYDEMONSTRATEDTHATCHINASANCIENTOUTSTANDINGACHIEVEMENTSINMETALSTRUCTURESAFTERTHEFOUNDINGOFNEWCHINA,STEELSTRUCTURECONSTRUCTIONHASGREATLYDEVELOPED,CANBEDIVIDEDINTOTHREESTAGESONEISTHEBEGINNINGOFPERIOD50YEARS60INTHEEARLY1990S,TWOISTHELOWTIDEPERIOD70YEARSINTHELATE60S,THREEISTHEDEVELOPMENTPERIOD80YEARSTHE50STO156PROJECTSFUNDEDBYTHESOVIETUNIONASTHEOPPORTUNITY,HASMADEOUTSTANDINGACHIEVEMENTSINCONSTRUCTIONIN60COUNTRIESPUTINSTEELSAVINGINTHECONSTRUCTIONINDUSTRYPOLICY,THEIMPLEMENTATIONPROCESSTHEREHAVEBEENSOMEMISUNDERSTANDING,LIMITSTHERATIONALUSEOFSTEELSTRUCTURECONSTRUCTIONANDDEVELOPMENTTHEINTRODUCTIONOFLIGHTSTEELCONSTRUCTIONINEIGHTYCOASTALAREAS,THEDOMESTICSTEELSTRUCTUREWORKSHOP,GAMESWILLBEALARGENUMBEROFSTEELSTRUCTUREOFGYMNASIUMCONSTRUCTION,ASWELLASMANYHIGHRISESTEELSTRUCTUREBUILDINGISBUILTTHEFIRSTCLIMAXOFDEVELOPMENTOFCHINASSTEELSTRUCTUREBUTIN1994,MORETHAN100METERSHIGHCHINESEHIGHRISEBUILDINGS152BUILDINGS,OFWHICHONLY9BUILDINGSWITHSTEELSTRUCTUREORSTEELANDCONCRETESTRUCTURE,WHILEINAFOREIGNCOUNTRYWITHSUCHHIGHBUILDINGSAREGENERALLYPREFERREDFORSTEELSTRUCTURECHINASANNUALCONSTRUCTIONSTEELQUANTITYONLY1WEREUSEDFORPREFABRICATEDSTEELSTRUCTURE,COMPAREDWITHTHEDEVELOPEDCOUNTRIESMORETHAN80OFTHEAMOUNT,HUGEGAPFORTUNATELY,THECURRENTDEVELOPMENTOFCHINASSTEELSTRUCTUREBUILDINGAPPEAREDPROSPERITYNEVERMAINLYINTHEHIGHRISE,SUPERHIGHRISEBUILDINGSBYCHINESEANDFOREIGNCOOPERATIONTODOMESTICSTARTCHINASFAMOUSHIGHRISE,HIGHRISEBUILDINGSAREMOSTLYISTHERESULTOFCOOPERATIONBETWEENCHINAANDFOREIGNCOUNTRIES,SUCHASSHANGHAIJINMAOTOWER,WORLDFINANCIALCENTER,SHENZHENIMPERIALESTATEBUILDING,BEIJINGJINGGUANGCENTERSINOFOREIGNCOOPERATIVEDESIGNFORMASTERINGFOREIGNADVANCEDTECHNOLOGYANDTALENTTRAININGEXERCISEPLAYSAPROMOTINGROLEBUILTIN1998,DALIANOCEANBUILDING201M,51MARKEDTHEDOMESTICSTEELSTRUCTUREHIGHRISEBUILDINGSTARTED,BUILTIN1999,SHENZHENSEGPLAZA2916M,72ISTHEWORLDSHIGHESTBUILDINGSTEELPIPECONCRETESTRUCTURECHINASSTEELSTRUCTURECONSTRUCTIONHASREACHEDACERTAINLEVEL,BUTINTHEASPECTSOFMATERIAL,PROCESSDESIGNMETHODCOMPAREDWITHTHEDEVELOPEDCOUNTRIESSTILLEXISTMANYGAPS,ISSTILLBLANKINSOMEAREAS,SUCHASLARGESPANANDSPACESTRUCTURE3VIGOROUSLYPROMOTETHETECHNOLOGYOFSTEELSTRUCTURE,TOCARRYOUTAWIDERANGEOFURGENCYOFSTEELSTRUCTUREBUILDINGDESIGNTHEURGENCYOFENVIRONMENTALPROBLEMS,PROMOTETHEPERSECUTIONTHEDEVELOPMENTOFSTEELSTRUCTUREHASBROUGHTABREAKTHROUGHINSOLVINGTHEPROBLEMSOFTHEENVIRONMENTFIRSTOFALL,STEELISAHIGHSTRENGTH,HIGHPERFORMANCEMATERIALSWITHVERYHIGHVALUE,RECYCLING,SCRAPHASVALUESECONDLY,THESEISMICPERFORMANCEOFSTEELSTRUCTURE,FLEXIBLEUSE,CONSTRUCTIONISNOTCONSUMEWOOD,STEELTEMPLATEANDWATERMASS,ALSOWONTPRODUCESTRONGNOISEANDAIRPOLLUTIONAGAIN,THEDEVELOPMENTOFSTEELSTRUCTUREWILLLEADTOASERIESOFLIGHTWEIGHTWALLMATERIALSDEVELOPMENT,ANDCREATETHECONDITIONSFORTHEDEVELOPMENTOFGREENBUILDINGMATERIALSOFCOURSE,THESTEELSTRUCTUREWHICHISCOMPAREDWITHTHEBRICKMASONRYSTRUCTURE,ISNOTTOSAYTHATTHESTEELSTRUCTUREBUILDINGISNODAMAGETOTHEENVIRONMENT,ISTHEUSEOFRESOURCES,ENERGYISRELATIVELYREASONABLE,THEDESTRUCTIONOFTHEENVIRONMENTISRELATIVELYLESSINTHEFACEOFSEVEREENVIRONMENTALPROBLEMS,THEDEVELOPMENTOFSTEELSTRUCTUREBUILDING,INSTEADOFCONCRETEANDMASONRYBUILDINGISANIDEALCHOICETRACETHEDEVELOPMENTOFCONSTRUCTIONSTEELSTRUCTUREOFDEVELOPEDCOUNTRIES,COMBININGTHEACTUALCONDITIONSOFOURCOUNTRY,ITISNOTDIFFICULTTOSEETHATTHEDEVELOPMENTOFSTEELSTRUCTUREINOURCOUNTRYABRIGHTFUTURE,BUTWILLHAVEMANYCHARACTERISTICSDIFFERENTFROMDEVELOPEDCOUNTRIESSOPROMISING,BECAUSETHEGOVERNMENTHASBEGUNTOATTACHGREATIMPORTANCETOTHEDEVELOPMENTOFSTEELSTRUCTURE,THESTEELSTRUCTURETECHNOLOGYASANEWTECHNOLOGYISPOPULARIZEDIN1998,IN1999ESTABLISHEDTHENATIONALLEADINGGROUPFORSTEELCONSTRUCTION,HEADEDBYTHEVICEMINISTEROFCONSTRUCTIONYERUTANGASATTHESAMETIME,APPLICATIONOFEXPERTGROUPCOMPOSEDOFNINESPECIALSUBJECTRESEARCHOFSTEELSTRUCTURESINTHEFIELDOFARCHITECTUREATPRESENT,THEDEVELOPEDCOUNTRIESOFTHEBUILDINGSTEELCONSUMPTIONFORITSSTEELOUTPUTOF4555,BUTOURCOUNTRYBUILDINGSTEELCONSUMPTIONACCOUNTEDFORONLYABOUT20OFTHETOTALOUTPUTTHEANNUALSTEELOUTPUTOFCHINAHASMORETHAN1TONS,SUCHASTHISRATIOCALCULATION,ISCHINASCONSTRUCTIONSTEELHASTHEDEVELOPMENTSPACEOFABOUT30000000TONSINRECENTYEARS,WITHTHEPRESSUREPLATE,ETCTHEUSEOFLIGHTWEIGHTROOFINGMATERIALS,LIGHTSTEELINDUSTRIALPLANTHASBEENRAPIDDEVELOPMENTITSSTRUCTUREISMAINLYSOLIDABDOMINALTAPEREDPORTALFRAMEAFFECTEDBYTHESTRUCTUREOFDYNAMICLOADSBECAUSESTEELHASGOODTOUGHNESS,ANDTHEREARELARGEHAMMEROROTHERDEVICESGENERATEDYNAMICACTIONOFTHEPLANT,EVENSMALLSPANROOF,OFTENMADEOFSTEELFORHIGHSTRUCTURALSEISMICCAPACITYREQUIREMENTS,THEUSEOFSTEELISMORESUITABLEMULTISTOREYANDHIGHRISEBUILDINGSSINCETHEOVERALLEFFICIENCYINDICATORSSTEELEXCELLENTINRECENTYEARSINMANYTALLBUILDINGSHASALSOBEENWIDELYUSEDITSSTRUCTUREISMAINLYMULTIFRAMEWORK,WHICHSUPPORTINGSTRUCTURE,FRAMETUBE,SUSPENSION,GIANTFRAMEWORKSTOWERINGSTRUCTURETOWERINGSTRUCTUREINCLUDESATOWERANDMASTSTRUCTURES,SUCHASHIGHVOLTAGETRANSMISSIONLINETOWER,BROADCASTING,COMMUNICATIONSANDTELEVISIONTRANSMISSIONTOWERANDMASTWITHROCKETSATELLITELAUNCHTOWERANDSOONSOWILLHAVETHEIROWNCHARACTERISTICS,BECAUSETHECONDITIONSOFOURCOUNTRYISDIFFERENTFROMTHEWESTERNDEVELOPEDCOUNTRIES,LABORISRELATIVELYCHEAP,THECOUNTRYISNOTRICH,RECEIVEPRIORITYWILLSTEELSTRUCTURELOWCOST,TECHNICALCONTENTSLIGHTLYLOWERINTHENEXTPERIODOFTIME,STEELCONCRETESTRUCTURE,STEELSTRUCTUREWILLGETFASTDEVELOPMENTCOMPAREDWITHOTHERSTRUCTUREOFCONCRETEFILLEDSTEELTUBESTRUCTURE,HAVINGTHEADVANTAGESOFHIGHBEARINGCAPACITY,DUCTILITYANDSEISMICPERFORMANCE,MATERIALSAVINGANDCONVENIENTCONSTRUCTIONCHARACTERISTICSFORHIGHRISEBUILDING,THESECHARACTERISTICSAREPARTICULARLYPROMINENT,CHINAINTHISFIELDHASBEENINALEADINGPOSITIONLIGHTWEIGHTSTEELSTRUCTUREISWIDELYUSEDINLARGESPANSINGLEHOUSE,INTHEFUTUREWILLBEAPPLIEDINALARGEAREAOFRESIDENTIALANDSMALLMULTISTOREYPUBLICBUILDINGSACCORDINGTOSTATISTICS,AFEWYEARSAFTERTWENTIETHCENTURY,CHINASURBANHOUSINGCONSTRUCTIONTOCOMPLETEDEACHYEARANAREAOF440000000SQUAREMETERS,THETOTALOUTPUTVALUEOF600000000000YUANABOUTGDP9SPEEDRAPIDDEVELOPMENT,HOUSINGINDUSTRYHASBECOMEANEWGROWTHPOINTINTHENATIONALECONOMYATTHETURNOFTHECENTURYSTEELSTRUCTURERESIDENTIALBUILDINGSYSTEMWITHITSSTRUCTURALCOMPONENTS,PREFABRICATEDLIGHTHIGHDEGREE,TOFACILITATETHEIMPLEMENTATIONOFSTANDARDIZED,STANDARDIZEDDESIGN,CONSTRUCTIONMACHINERY,FITTINGSMANUFACTURINGFACTORY,SHORTCONSTRUCTIONPERIODANDOTHERADVANTAGES,SHOWITSWIDEAPPLICATIONANDDEVELOPMENTPROSPECTINTHEBUILDINGMATERIALSMARKET,WASONEOFTHEMAINSYSTEMTOREPLACETHEEXISTINGSMALLBRICKRESIDENTIALSMALLANDMEDIUMCONSTRUCTIONISALARGEVOLUME,THEDEVELOPMENTOFLIGHTSTEELSTRUCTUREFORRESOURCES,ENERGYSHORTAGEINCHINAISSTILLOFGREATSIGNIFICANCE参考文献目录1董石麟我国大跨度空间钢结构的发展与展望空间结构J,2000,623142沈祖炎,陈扬骥,陈以一钢结构基本原理M北京中国建筑工业出版社,20003丁阳钢结构设计原理M天津天津大学出版社,20044STANDARDHANDBOOKFORCIVILENGINEERSHANDBOOKBYJONATHANRICKETTS,MLOFTINANDFREDERICKMERRITT5CIVILENGINEERINGHANDBOOK,BYWFCHEN6THEARCHITECTSPORTABLEHANDBOOK,BYPATGUTHRIE,MCGRAWHILLCOMPANY翻译文章原文本章小结本章分析了混凝土抗压强度和弹性模量两个重要力学参数的各种影响因素，考虑了骨料性能、骨料粒径、水胶比和约束四种情况，得出如下结论1通过在ANSYS软件中对三组不同表观密度轻骨料的混凝土模型的有限元分析，结果显示混凝土表观密度增大时，混凝土整体抗压强度和弹性模量都有显示的提高，得出骨料表观密度对自密实轻骨料混凝土的力学性能有显著影响的结论。2通过在ANSYS软件中对三组不同大小骨料的混凝土模型的有限元分析，结果显示骨料粒径增大时，混凝土的抗压强度和弹性模量下降很快，得出骨料粒径大小对自密实轻骨料混凝土的力学性能影响显著的结论。3考虑到自密实轻骨料混凝土的核心问题是解决流动性与抗离析性能的统一，而这两点与水胶比都密切相关，因此水胶比的变化范围受到了严格限制。通过对30组不同配合比的自密实轻骨料混凝土模型的有限元分析，结算结果显示，水胶比变化不大的情况下，混凝土的抗压强度和弹性模量变化比较小，可得出水胶比对混凝土整体力学性能影响相对较弱。4通过对不同端部约束的混凝土模型的有限元分析，得出不同约束时，棱柱体抗压强度和弹性模量区别不大，说明端部摩擦对整体力学性能影响不大，与圣维南原理的局部效应分析结论相一致。因为相对于水泥砂浆基体，骨料的抗压强度和弹性模量都要小，所以其属于混凝土的薄弱环节。本文结论说明在轻骨料自密实混凝土配置过程中，骨料的选择是重要的一环。SUMMARYOFTHISCHAPTERTHISCHAPTERANALYZESTHECONCRETECOMPRESSIVESTRENGTHANDELASTICMODULUSARETWOIMPORTANTFACTORSAFFECTINGTHEMECHANICALPARAMETERS,CONSIDERINGTHEAGGREGATEPERFORMANCEOFAGGREGATESIZE,WATERCEMENTRATIOANDCONSTRAINTSFOURCASES,THEFOLLOWINGCONCLUSIONS1BYAPPARENTDENSITYFORTHREEDIFFERENTSETSOFLIGHTWEIGHTAGGREGATECONCRETEMODELFORFINITEELEMENTANALYSISINANSYS,ITSHOWEDTHATTHEAPPARENTDENSITYOFCONCRETEINCREASES,THECONCRETECOMPRESSIVESTRENGTHANDMODULUSOFELASTICITYOFTHEWHOLESHOWHASIMPROVED,APPARENTDENSITYDERIVEDAGGREGATESELFCOMPACTINGLIGHTWEIGHTAGGREGATEC