000004837 001__ 4837
000004837 005__ 20141119144557.0
000004837 04107 $$aeng
000004837 046__ $$k2002-06-02
000004837 100__ $$aFairbairn, Eduardo M. R.
000004837 24500 $$aOPTIMIZATION OF MASS CONCRETE CONSTRUCTION USING GENETIC ALGORITHMS

000004837 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004837 260__ $$bColumbia University in the City of New York
000004837 506__ $$arestricted
000004837 520__ $$2eng$$aThis paper presents a procedure to optimize the construction of massive concrete structures using genetic algorithms. The main loading condition for such structures corresponds to strains imposed by the effects of the hydration reaction, namely the thermal strains and the autogenous shrinkage strains. The coupled model developed by Ulm and Coussy implemented in a 3D computer code may be used to compute the transient hydration, thermal and stress fields. The decision variables for the optimization process are: the material characterized by its hydration properties; the thickness of the lifts; the placing frequency and the placing temperature. The optimization problem is defined by the fitness function which is the total cost of the construction and the constraint (penalty) which corresponds to thermal cracking. The example corresponding to the layered construction of a concrete block displays the potentiality of the present method as an optimization tool for massive concrete structures.

000004837 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004837 653__ $$amassive concrete, early ages, construction, optimization

000004837 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004837 720__ $$aFairbairn, Eduardo M. R.$$iSilvoso, Marcos M.$$iAlves, José L. D.$$iFilho, Romildo D. T.
000004837 8560_ $$ffischerc@itam.cas.cz
000004837 8564_ $$s551952$$uhttps://invenio.itam.cas.cz/record/4837/files/416.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004837 962__ $$r4594
000004837 980__ $$aPAPER