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  • 1
    Electronic Resource
    Electronic Resource
    Mechanics Characteristics and Failure Criteria of Concrete Confined by Lateral Stress after Suffering Cycles of Freezing and Thawing in Seawater (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 334-335 (Mar. 2007), p. 245-248 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Biaxial compressive tests of plain concrete specimens suffering 0、25、50 and 75 cyclesof freezing and thawing respectively in 3.5% sodium chloride solution imitated seawater werecompleted under four lateral constant stress rates. The tests were completed by using the largestatic-dynamic triaxial test system for concrete in the State Key Laboratory of Coastal and OffshoreEngineering, Dalian University of Technology. The biaxial compressive strength and deformationcharacteristics of concrete confined by lateral stress after suffering corrosive cycles of freezing andthawing were studied in a systematic way. On the basis of the tests, the failure criterion of concretesubjected to constant lateral compressive stress after suffering corrosive cycles of freezing andthawing was established in the stress-strain system. The conclusions can provide the testing andtheoretical basis for deeper study of the concrete construction subjected to biaxial compressivecombined loads in northern cold region or influenced by corrosive cycles of freezing and thawingnearby the coastal and offshore area
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.245.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Statistical Analysis for Fatigue Life of Concrete (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 385-387 (July 2008), p. 285-288 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Statistical analysis is presented for 108 groups of fatigue test data of concrete, includingtests of abnormal value, variance and distribution-fitted with fuzzy optimization; analysis ofvariance, sample size and error. It is chiefly concluded that effect of stress level of repeated loadingon the fatigue life of concrete is much more significant than that of stress rate and relative stressamplitude, and effect of stress rate and relative stress amplitude are of the same significance;Relationship of sample size, relative error and significant level is also presented; fatigue life ofconcrete is more fitted for lognormal distribution than Weibull distribution. Suggestion for relevantcode, standard and regulation are presented
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.385-387.285.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    A New Model for Fatigue Life Distribution of Concrete (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 201-204 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Based on the S-N relationship and statistical property of concrete static strength, afunction of fatigue life of concrete,1 (a − blog N) , is found to follow the normal distribution. Thusa new probabilistic model of fatigue life distribution of concrete is presented in this paper. Themodel connects statistical properties of static strength and fatigue life of concrete together in theory,so it is of clear physical meaning. An experiment was conducted. The experiment was a part of theproject of The State Natural Science Foundation—Failure Criterion of Plain Concrete UnderMultiaxial Fatigue Loading. 2 χ -test and Kolmogorov-Smirnov test are employed to test theproposed model. Fuzzy optimization is used to compare the model with lognormal distribution.2 χ -test, Kolmogorov-Smirnov test and fuzzy optimization are also conducted for test data fromreferences. The results show that the new model is more flexible to fit test data
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.201.pdf
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