Creep of cocrete under multiaxial stresses다축압 상태의 콘크리트 크리프에 관한 연구

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 584
  • Download : 0
DC FieldValueLanguage
dc.contributor.advisorKim, Jin-Keun-
dc.contributor.advisor김진근-
dc.contributor.authorKwon, Seung-Hee-
dc.contributor.author권승희-
dc.date.accessioned2011-12-13T02:23:08Z-
dc.date.available2011-12-13T02:23:08Z-
dc.date.issued2005-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=244862&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/30568-
dc.description학위논문(박사) - 한국과학기술원 : 건설및환경공학과, 2005.2, [ ix, 148 p. ]-
dc.description.abstractConcrete material has time-dependent properties, namely creep and shrinkage, which induce the long-term deformation in concrete structures. The long-term behavior may cause the concrete cracking and the deterioration of serviceability and durability. Therefore, the effect of the long-term behavior obtained from the prediction should be considered in the process of design and construction. Most research and prediction models on creep of concrete have been concerned with the uniaxial stress state. Research on creep under multiaxial stresses, however, has been relatively scarce, and the properties of creep under multiaxial stresses have not been fully understood even though concrete is subjected to multiaxial stresses in many structural members and structures. The Poisson’s ratio due to multiaxial creep of concrete that has been reported by some experimental works is very controversial. When calculated from measured strains, Poisson’s ratio is very sensitive to small experimental error. This sensitivity makes it difficult to determine whether the ratio varies with time or remains constant, and whether it has a different value with stress states. To precisely understand the properties of multiaxial creep of concrete, a new approach method is needed. Therefore, to definitely find out the properties of creep under multiaxial stresses, elaborate experimental study and analytical study using microplane model as a new approach method are preformed in this study. In addition to these experimental and analytical studies, numerical analyses are carried out for CFT column as a representative concrete member being under multiaxial stresses, the effect of the found creep properties on structural response is investigated. Twenty-seven specimens for three concrete mixes were tested for basic creep under constantly sustained multiaxial stresses. From the experiments, it was found that volumetric and deviatoric creep strains are linearly proportional to volumetric and deviator...eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjectmicroplane model-
dc.subjectexperiment-
dc.subjectanalysis-
dc.subjectmultiaxial stresses-
dc.subjectCreep-
dc.subjectPoisson``s ratiocyclic loadings-
dc.subject포아송 비-
dc.subject마이크로 플래인 모델-
dc.subject실험-
dc.subject분석-
dc.subject다축응력 상태-
dc.subject크리프-
dc.titleCreep of cocrete under multiaxial stresses-
dc.title.alternative다축압 상태의 콘크리트 크리프에 관한 연구-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN244862/325007 -
dc.description.department한국과학기술원 : 건설및환경공학과, -
dc.identifier.uid020005017-
dc.contributor.localauthorKim, Jin-Keun-
dc.contributor.localauthor김진근-
Appears in Collection
CE-Theses_Ph.D.(박사논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0