中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2013, Vol. 32 ›› Issue (3): 396-399.DOI: 10.3969/j.issn.1674-0696.2013.03.06

• • 上一篇    下一篇

盐冻条件下矩形氯丁橡胶支座受压性能试验

沈小俊 1,陈伯奎 1,高飞 1,谢应爽 1,郑怡 2,马良   

  1. 1.重庆市公路工程质量检测中心,重庆400060;2.辽宁省产品质量监督检验院,辽宁沈阳110032; 3.沈阳建筑大学土木工程学院,辽宁沈阳110168
  • 收稿日期:2012-05-01 修回日期:2012-12-31 出版日期:2013-06-15 发布日期:2015-03-12
  • 作者简介:沈小俊(1971—),男,重庆人,教授级高级工程师,硕士,主要从事桥梁检测方面的研究E-mail:dandongzy@126.com

CompressionTestsof theRectangularPlainChloropreneRubberBearingsin SaltyFrozenCondition

ShenXiaojun 1,ChenBokui 2,GaoFei 1,XieYingshuang 1,ZhengYi 2,MaLiang   

  1. 1.ChongqingCenter for Test of HighwayEngineering,Chongqing400060,China; 2.LiaoningInspectionInstitutefor Product Quality,Shenyang110032,Liaoning,China; 3.School of Civil Engineering,ShenyangArchitectureUniversity,Shenyang110168,Liaoning,China)
  • Received:2012-05-01 Revised:2012-12-31 Online:2013-06-15 Published:2015-03-12

摘要: 为了研究矩形氯丁橡胶支座在盐冻条件下的各项力学性能指标变化,将矩形氯丁橡胶支座分别进行20,40, 60,80d盐冻处理,并采用压力试验机对其进行轴心受压试验,研究盐冻对矩形氯丁橡胶支座的承载力极限抗压强 度竖向刚度抗压弹性模量的影响试验结果表明:在盐冻条件下,矩形氯丁橡胶支座更易发生脆性破坏,弹性阶 段缩短,发生钢板外露裂缝层状破坏等现象更严重;承载力极限抗压强度竖向刚度抗压弹性模量随盐冻程度 的加深而逐渐降低采用最小二乘法对试验结果进行回归得到盐冻条件下矩形氯丁橡胶支座50a抗压强度及抗 压弹性模量衰减曲线和衰减模型,统计分析表明衰减曲线和衰减模型符合实际情况

关键词: 氯丁橡胶支座, 盐冻试验, 轴心受压试验, 极限抗压强度

Abstract: Inorder todotheresearchonthechangeof themechanical indexes of therectangular plainchloroprenerubber bearings,therectangular plainchloroprenerubber bearingswereprocessedunder saltyfrozenconditionfor20,40,60and 80days. Moreover,theaxial compressiontestswerealsocarriedout bypressuretestingmachine. Theeffect of thesalt-frost onbearingcapacity,ultimatecompressivestrength,vertical stiffness,andcompressiveelasticmodulus of therectangular plainchloroprenerubber bearingswasalsostudied. Theresultsshowedthat insaltyfrozencondition,brittlefractureof the plainchloroprenerubberbearingswaseasiertoappear; theelasticstagewasshortenandthephenomenonof steel plateexposure,cracksandlayereddestructionweremoreserious; thebearingcapacities,ultimatecompressivestrength,vertical stiffness,andelasticmodulusof compressiondecreasedwiththedeepeningof thesaltyfrozendegree. Theattenuationcurveof compressivestrengthandcompressiveelasticmodulusandtheattenuationmodel wereacquiredin50yearsbyregressionanalysiswiththeleast squaremethod. Thestatistical analysisresult showsthat theattenuationcurveandtheattenuationmodel conformtothereal situation

Key words: plainchloroprenerubberbearings, saltyfrozenexperiment, axialcompressiontest, ultimatecompressive strength

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