大直径钢管混凝土本构关系的研究与应用

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1、分类号!型!!坠!密级单位代码10618学号03260101重庆交通大学硕士学位论文论文题目：大直径钢管混凝土本构关系的研究与应用TheAnalysisandAppfieafionofLarge—DiameterConcrete—FilledSteelTubeConstitutiveRelafionship研究生姓名：导师姓名、职称申请学位级别专业名称：论文答辩日期王志慧桥梁与隧道工程2006年4月12日学位授予单位：重庆交通大学答辩委员会主席：李正良教授评阅人：李正良教授周志祥教授2006年4月10日摘要ABSTRACTAlong谢t11theapplicati

2、onofconcrete-fiUedsteeltubestructurecontinuouslyextensiveitstheoriesresearchalsoatcontinuousdevelopment，thenewlyarisencombinationmaterial’sconstitutionrehtionshiphasbeenthehotpointofresearch．Throughtheresearchandtheoriesanalysisofsteel’sconstitutionrelationship，incrementtheorywasusedi

3、nsteadoftotaltheoryandsimplificationofstraightlinemodelinthephageofplasticofsteel．Throughtheresearchofconstitutionrelationshipofcore-concrete，curveofeachmodelunderthesar／reconditionwasgotandtheinfluencewhichcausedbydifferentparameterwasgottothemodel．Aimattheresearchpurpose，fourmembers

4、ofconcrete—filledsteeltubeweredesignedandcreatedwhichweredifferentdiametersanddifferentsteelration．Themodelandtheparameterthatneedtoberevisedwasselectedinthebaseofexperimentana／ysis．Theconstitutionrelationshipofcore-concretewhichintheconditionofaxialloadedandsuitedforbigdiameterconcre

5、tl．‘一filledsteeltubewasgotthroughrevisingtheparameter．Theconclusionofconcrete—filledsteeltube’sstressgradientchanginginsectionsintheconditionofeccentricallyloadedthroughtheoreticalanalysiswasgot．thestressgradientchangingwasdescribedbytheinfluentialcoefficientofcasinghoopsteelcoefficie

6、nt，fourmembersofconcrete-filledsteeltubeweredesignedandcreatedwhichweredifferentdin-metersanddifferenteccentricityration．／nthebaseofexperimentalanalysis，thegradientinfluencecoefflcientisdetermined．Anewconcrete-filledsteeltube’score-concreteconst—itutionrelationshipwhichintheconditiono

7、feccentricallyloadedisdetermined．Usetheconstitutionrelationshipofcore·concretethatintroducedinthispaper,theconcrete—filledsteeltubesupportingcapacitywhichintheconditionofaxialloadedwasgotbyANSYSsoftware．Usetheconstitutionrelationshipofcore—concretethatintroducedinthispaper,concrete—fi

8、lleds