建筑工程地下室外墙混凝土结构裂缝控制技术研究

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1、上海交通大学硕士学位论文建筑工程地下室外墙混凝土结构裂缝控制技术研究姓名：高德方申请学位级别：硕士专业：建筑与土木工程指导教师：沈水龙;张瑞云20070501上海交通大学硕士学位论文中文摘要（1）通过构造配筋可以提高外墙墙板的抗开裂能力和有效控制墙板开裂之后的裂缝宽度发展；（2）提出了混凝土应力应变与配筋率之间的关系，给出了合理的配筋率；（3）通过该工程实例的研究，得到了裂缝宽度与配筋率、裂缝数量之间的定量关系等。这些关系可以作为设计控制的理论依据。关键词:大体积混凝土，地下室外墙，裂缝控制，混凝土底板II上海交通

2、大学硕士学位论文英文摘要STUDYONTHECRACKCONTROLLINGOFCONCRETEBASEMENTWALLABSTRACTTheouterwallofbuildingbasementbearspressureofgroundwatersinceitissurroundedbygroundwater.Ifthereareanycracks(orfissures)onthewall,groundwaterwillpenetrateintothecracksunderpressure.Oncethecrac

3、ksorfissuresperforatetheouterwallfromoutertoinner,groundwatermaypenetrates(orflows)intobasementthroughtheperforatedcracks.Thiswillnotonlydamagethebeautyand/ortheusefulfunctionofbuildingbutalsomakethereinforcedsteelbarrusted.Thesafetyofbuildingmaybelost.Moreove

4、r,theflowofgroundwatermaycauseconsolidationofsurroundinggroundandsubsidenceofsurroundinggroundsurface.Thus,theenvironmentofsurroundingsmaybedamaged.Tosolvethisproblem,itneedslargehumanresourcesandfinancialresources.Leakofgroundwaterthroughcracksaffectsnotonlyt

5、heinstallationofinnerfacilitiesbutalsoinnerdecoration.Althoughsomeconstructioncompaniescostmuchmoneytosolvethecrackingproblemofconcrete,leaksstilloccur.Therefore,developmentofconcretewiththecharacteristicsoflowshrinkingandhighanti-splittingisverysignificantinc

6、oncretecrackingcontrolling.Itisverydifficulttocontroltheoccurrenceofcracksinconcrete.Therearestillnoeffectivemeasurestocontrolthecracksinengineeringpractice.Thisstudyinvestigatesthereasonsofcracksthroughfollowingfouraspects:material,environment,restrainedcondi

7、tions,andfieldmonitoringduringconstruction.AfteranalysingthelimitationofIII上海交通大学硕士学位论文英文摘要differentmethods,countermeasuresoncrackcontrolisproposedandthemethodisappliedintheconstructionpracticeinNo.810project.AccordingtothefieldsituationofNo.810project,theatte

8、ntionwaspaidontheoutsidewallandbottomslab.Thereasonsofcrackingandstressconcentrationwereanalysedatfirst.Then,thestructuralreinforcementandstress-releaseslotinbasementwallweredesign