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Decomposition algorithm for determining the optimal railroad profile
Longitudinal earth moving from cuts into fills often plays a major role in the construction of the longitudinal profile of a railroad. The construction costs depend not only on the level markings of the projected longitudinal profile, but also essentially on the distribution of earth masses and the volume of earth works. The standard algorithms of successive evaluation of alternatives are fairly efficient computationally for the design of the longitudinal road profile; they are capable of taking into account the earth mass distribution and the volume of earth work indirectly, through the unit costs of earth work in cuts and fills. However, the earth moving plan is usually finalized only after the projected longitudinal profile has been determined. This may lead to certain errors in the specification of earth moving unit costs and as a result to certain deviations of the final design from the optimal program. In order to avoid gross errors in the determination of the optimal design of a longitudinal road profile and to account as far as possible for the specific earth moving conditions of the site, the authors developed an iterative decomposition algorithm which solves the dual problem of optimizing the earth works in order to determine the unit costs required for the solution of the longitudinal profile problem by successive evaluation of alternatives.
Decomposition algorithm for determining the optimal railroad profile
Longitudinal earth moving from cuts into fills often plays a major role in the construction of the longitudinal profile of a railroad. The construction costs depend not only on the level markings of the projected longitudinal profile, but also essentially on the distribution of earth masses and the volume of earth works. The standard algorithms of successive evaluation of alternatives are fairly efficient computationally for the design of the longitudinal road profile; they are capable of taking into account the earth mass distribution and the volume of earth work indirectly, through the unit costs of earth work in cuts and fills. However, the earth moving plan is usually finalized only after the projected longitudinal profile has been determined. This may lead to certain errors in the specification of earth moving unit costs and as a result to certain deviations of the final design from the optimal program. In order to avoid gross errors in the determination of the optimal design of a longitudinal road profile and to account as far as possible for the specific earth moving conditions of the site, the authors developed an iterative decomposition algorithm which solves the dual problem of optimizing the earth works in order to determine the unit costs required for the solution of the longitudinal profile problem by successive evaluation of alternatives.
Decomposition algorithm for determining the optimal railroad profile
Zerlegungsalgorithmus zur Bestimmung eines optimalen Bahndammlaengsprofils
Belyaeva, L.V. (author) / Biletskii, V.I. (author) / Shor, N.Z. (author)
Cybernetics, New York ; 19 ; 388-392
1983
5 Seiten, 6 Quellen
Article (Journal)
English
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