Documents disponibles écrits par cet auteur

Analytical and numerical modeling of prestressed continuous steel-concrete composite beams / Jianguo Nie in Journal of structural engineering, Vol. 137 N° 12 (Décembre 2011) 

Public ISBD [article]  in Journal of structural engineering > Vol. 137 N° 12 (Décembre 2011) . - pp. 1405-1418 Titre : Analytical and numerical modeling of prestressed continuous steel-concrete composite beams Type de document : texte imprimé Auteurs : Jianguo Nie, Auteur ; Muxuan Tao, Auteur ; C. S. Cai, Auteur Année de publication : 2012 Article en page(s) : pp. 1405-1418 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Prestressed  concrete  Composite  beam  Continuous  beam  Loading  capacity  Crack  load  Yield  load  Ultimate  load  Finite  element  analysis  Nonlinear  Whole  process Résumé : A loading capacity analysis is conducted for prestressed continuous steel-concrete composite beams. On the basis of the basic theoretical framework of the solution of externally unbonded prestressed structures, formulas for calculating the three characteristic loads (crack, yield, and ultimate loads) of two-span prestressed continuous composite beams under symmetric concentrated loads are proposed and extended to general cases. The variation of tendon force is considered and the adopted limit equilibrium approach only requires the development of equilibrium equations, which avoids the solution of cumbersome simultaneous deformation compatibility equations. Furthermore, an elaborate finite element model is presented for simulating the nonlinear behavior of prestressed continuous composite beams by using the commercial finite element package. The numerical model considering both the material and geometric nonlinearities can fully reflect the complex behaviors of prestressed continuous composite beams during the whole loading process. The comparisons among the analytical, numerical, and experimental results demonstrate that the analytical method provides a convenient and reliable tool for a routine design practice and the finite element model provides an excellent numerical simulation for the nonlinear behavior of prestressed continuous composite beams. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i12/p1405_s1?isAuthorized=no [article] Analytical and numerical modeling of prestressed continuous steel-concrete composite beams [texte imprimé] / Jianguo Nie, Auteur ; Muxuan Tao, Auteur ; C. S. Cai, Auteur . - 2012 . - pp. 1405-1418. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 137 N° 12 (Décembre 2011) . - pp. 1405-1418 Mots-clés : Prestressed  concrete  Composite  beam  Continuous  beam  Loading  capacity  Crack  load  Yield  load  Ultimate  load  Finite  element  analysis  Nonlinear  Whole  process Résumé : A loading capacity analysis is conducted for prestressed continuous steel-concrete composite beams. On the basis of the basic theoretical framework of the solution of externally unbonded prestressed structures, formulas for calculating the three characteristic loads (crack, yield, and ultimate loads) of two-span prestressed continuous composite beams under symmetric concentrated loads are proposed and extended to general cases. The variation of tendon force is considered and the adopted limit equilibrium approach only requires the development of equilibrium equations, which avoids the solution of cumbersome simultaneous deformation compatibility equations. Furthermore, an elaborate finite element model is presented for simulating the nonlinear behavior of prestressed continuous composite beams by using the commercial finite element package. The numerical model considering both the material and geometric nonlinearities can fully reflect the complex behaviors of prestressed continuous composite beams during the whole loading process. The comparisons among the analytical, numerical, and experimental results demonstrate that the analytical method provides a convenient and reliable tool for a routine design practice and the finite element model provides an excellent numerical simulation for the nonlinear behavior of prestressed continuous composite beams. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i12/p1405_s1?isAuthorized=no