Browsing by Autor "Chandra Nalluri"

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    Local scour around bridge piers a study of its effects around cylindrical pier groups
    (Universidad de Los Andes, 2000) Andrés Mauricio Espinosa Farfan; Chandra Nalluri
    Laboratory experiments were conducted to measure local scour around cylindrical piers in different arrangements. Also experimental data was compiled for each arrangement to develop semi-empirical equations by means of statistical analyses. The methodology of Salim & Jones (1996) was tested with the experimental data and a new equation to predict scouring in pile groups is proposed. Finally the goodness of piers with slot is verified as a mechanism to minimise the scouring phenomenon.
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    Medidas de protección contra la socavación local en pilas de puente
    (Universidad de Los Andes, 1999) Francisco Plata; Chandra Nalluri; Juan Saldarriaga
    The purpose of this present research is to analyze the effect of some protective structures used against local scour at bridge piers. The effects of using flat plates of different geometric shapes are studied. Experiments demonstrated that the efficacy of the tested elements increases when these are installed at the same level as the bed, as well as when their shapes conform to the patterns of scour basin around the pier. The maximum depth of scour in the presence of protective structures is found on the sides of the pier at a distance from it.