Efectul capacității portante a terenului de fundare asupra volumului și costului barajelor de greutate folosite la corectarea torenților [The effect of the bearing capacity of the foundation ground on the volume and cost of the gravity dams used in torrent control activity]
The paper analyzes the effect of the bearing capacity of the foundation ground on the volume and cost of some dams. Using a theoretical model, were analyzed 125 dams, as resulted from the combination of five categories of useful heights, with five categories of loads in the spillway, and five fou...
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| Format: | Article |
| Language: | English |
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”Ștefan cel Mare” University of Suceava, Faculty of Forestry and “Marin Drăcea” National Research-Development Institute in Forestry - Station Câmpulung Moldovenesc
2018-07-01
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| Series: | Bucovina Forestieră |
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| Online Access: | http://www.bucovina-forestiera.ro/arhiva/2018/18(1)/03_ciornei_35-48.pdf |
| Summary: | The paper analyzes the effect of the bearing capacity of the foundation
ground on the volume and cost of some dams. Using a theoretical model, were
analyzed 125 dams, as resulted from the combination of five categories of useful
heights, with five categories of loads in the spillway, and five foundation ground
categories with known bearing capacity. In our simulation, we choosed often-used
dams that have an upside-down foundation and are made of beton. When deciding the spill area, we took into account the most unfavorable load scheme and the
safety factors imposed by norms and basic, plus special loads. In order to achieve
an economical optimum, it is necessary to minimize the cost of each work, which
translates into a function that aims to minimize the volume of the dam, and also
to minimize the area of its section. The external and internal stability conditions
became mandatory criteria for the objective function. The 125 dams were dimensioned using a Microsoft Excel spreadsheet prepared accordingly, while the minimization of the section was done using the Solver tool. It has been pointed that the
section area and, implicitly, the volume of a 1 m wide dam stripe increases, as the
load capacity the foundation ground. These volumes increase with the useful height
of the work and the task of the spillway. The obtained results show that the specific investment indicator (determined as the ratio between the cost of the proposed
works and the consolidated area) is also influenced by the nature of the foundation
ground, and its use for comparing projects located at different conditions, at least in
the case of dams, is not recommended. |
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| ISSN: | 1582-0769 1582-3725 |