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008 230798 th eng
035 _a.b10180333
099 9 _aAIT Thesis no.ST-91-12
100 1 _aKhan, Jamil ur Rehman
245 1 0 _aCyclic stress transfer through a cracked reinforced concrete section
260 _aBangkok :
_bAsian Institute of Technology,
_c1991
300 _a49, A-6 p.
490 1 _aThesis ;
_vno. ST-91-12
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1991
520 _aThe subject of this study is to enhance the applicability of contact density model to reinforced concrete, and to propose a generalized stress transfer model, which can predict behaviors across any concrete crack plane, subjected to cyclic loading. The reversed cyclic stress transfer mechanism of concrete across a crack in reinforced concrete flexural members has been investigated in this study. Experimental reversed cyclic shear load - shear displacement and moment - curvature results for concrete only in reinforced concrete members are given. In reinforced concrete flexural members, the crack surface, geometry of the crack and its mechanical behaviors are experimentally found to be quite different from those of normal plain concrete, and the microcracking, nonlinear interaction between bars and flexural bending reduce the ultimate shear carrying capacity of rough crack. A single crack in reinforced concrete flexural member is discretized into finite numbers of elements. Within these elements the rough crack surface is idealized as a set of numerous contact units with various inclinations. The distribution of their direction is expressed by the "Modified Contact Density Function". In each direction the contact units can transfer the normal stress and shear stress, which are formulated by elasto-plastic model. The derived model is capable of dealing not only with monotonic loading but also with cyclic loading and verified by a series of experimental results.
650 0 _aReinforced concrete
650 0 _aConcrete
_xCracking
700 1 _aMaekawa, Koichi,
_eChairperson
700 1 _aYamaguchi, Hiroki,
_eExamination Committee
700 0 _aPichai Nimityongskul,
_eExamination Committee
710 2 _aThe Government of Norway,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. ST-91-12
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B17705
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