浅谈隧道接缝橡胶密封垫防水性能试验及有限元分析

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1、同济大学硕士学位论文隧道接缝橡胶密封垫防水性能试验及有限元分析姓名：樊庆功申请学位级别：硕士专业：岩土工程指导教师：周顺华2002.11.25目济太学硕士举链论文隧遂接缱攮胶密封垫辚球蛙能试验及翕辍元分辑摘要f橡胶密封垫在隧道接缝防水中的广泛应用，使隧道接缝防水能力得到很大改、善，但由于设计、施工中对橡胶密封垫防水性能认识不足，渗漏现象经常出现，、如何提离橡胶密封垫在隧邋接缝中的防水能力是工程中迫切篙要解决的问题。上本文鬟点慰掾胶密封垫在隧道接缝中的防水性能逛萼亍哿}究。依据橡胶密封垫防窳设计基本疆论，黠屠毒岛隧遴撵形缌舍逞承膨胀橡胶密鹫垫、浚管隧i耄GINA橡胶密封垫压缩往

2、能及永密缝递符试骏，分析橡胶密封垫援辕疰力与凝缩萋静关系殿遇水膨胀住能、压缩薰与橡胶密封垫最大耐永压酌关系；同甜运糟ANSYS有限元程序分析不同压缩羹下橡胶密封垫试件断面的变形特性、内部应力分布及其接触面的应力分布等，评述密封垫断面形式灯其防水性能的影响：并在试验与有限元分析基础上，进一步讨论橡胶密封垫接触面应力与其最大耐水鹾力之间的关系，探讨隧逆接缝橡胶密封垫防水扒理，最厝得出隧道接缝橡胶密封垫防水设计参数戆合理取璧莲爨。关键词隧道接缝；橡胶密封垫i耐水压力，压缎量?遇水膨胀特性?有限元童燮垡羔塑堕曼些塑星L一一壁堂壁鳖堡墼鲎塑垫堕查竺璧堕墼墨查竖垂坌堑AbstractTh

3、erubber-sealingcushionisbeingwidelyappliedtothewaterprotectioninthetunneljointsIandthewaterproofabilityoftheamneljointsisimprovedgreatly．However,becauseoftheshortageofthestudyOilthewaterproofpropertyoftherubber-sealingcushion，theseepageatthetunneljointsisacommonphenomena．w越chisaurgentneeded

4、tosolvepresentlyishowtoraisethewaterproofabilityoftherubbersealingcushionusedinthetunneljoints．nispaperpaysanemphasisonstudyingthewaterproofpropertyoftherubber-sealingcushion．aftertestingthetrapezoidalcompositehydro·expansiverubber-sealingcushionusedintheshieldtunnelandtheGINArubber-sealing

5、cushionusedintheimmersedtunnelonthecompressionandthewaterproofproperty,itanalyzestherelationshipbetweencompressionstressandcompressionquantity,relationshipofmaximumwaterproofabilitytohydro—expansivebehaviorandcompressionquantity．ByapplyingthefiniteelementprocedureANSYS，itanalyzesdeformation

6、propertyands1]-essdistributioninthesectionandoncontactsurface，andaSSeSSestheeffectthatthesectionshapehasOnthewaterproofperformance．Accordingtotheresultsthataledrewabove，relationshipofthewaterproofperformanceandstressdistributiononthecontactsurfaceisanalyzed,andthewaterproofmechanismoftherub

7、ber-sealingcushionusedatthetunnelconnectionpointisresearched．Atlast．thereasonablefactorsforthedesignoftherubbersealingcushionusedinthetunneljointsisobtained．Keywordstunneljointsrubbersealingcushionwaterproofabilitycompressionquantityhydro—expansiveproper