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Diseño de portales evitando o reduciendo el corte en rocas.

Arias Estrella, Mario Andrés (Escuela Colombiana de Ingeniería Julio GaravitoMaestría en Ingeniería Civil con Énfasis en Geotecnia, 2017)

Geometrical alignment conditions as well as topography restrictions lead to portal designs, which do not necessarily intersect the ground in a desired perpendicular angle. Lack of portal design guidelines and a vague ...
Diseño de portales para evitar o reducir el corte en rocas

Arias, Mario; Salazar Ferro, Ricardo (Escuela Colombiana de Ingeniería Julio Garavito, 2017)

Restrictions on topography lead to designs of portals that do not necessarily intersect with the axis of the track at a right angle. The lack of appropriate guidelines in the design for portals and a vague understanding ...

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Diseño de portales evitando o reduciendo el corte en rocas.
...
Arias Estrella, Mario Andrés | 2017

Geometrical alignment conditions as well as topography restrictions lead to portal designs, which do not necessarily intersect the ground in a desired perpendicular angle. Lack of portal design guidelines and a vague understanding on the rock mass yields, therefore, to conservative (heavy/stiff support) portal designs, complex construction procedures, longer construction time and a higher environmental impact. The present work proposes a new approach for skewed portal design based on a complete understanding of the rock mass behavior and its failure mechanisms. The approach is based on 2D numerical models and complemented with 3D model for comparison and optimization. A study case in the Andes range is presented, where conventional and skewed portals have been constructed.

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Diseño de portales para evitar o reducir el corte en rocas
...
Arias, Mario | 2017

Restrictions on topography lead to designs of portals that do not necessarily intersect with the axis of the track at a right angle. The lack of appropriate guidelines in the design for portals and a vague understanding of the behavior of the rock mass bring as a consequence the design of very conservative portals (heavy or rigid support), generating in addition complex construction procedures, longer construction times and a greater environmental impact. This article points to a new approach to the design of portals in a biased way, based on a complete understanding of the behavior of the rock mass and its failure mechanisms. The approach is based on 2D numerical models, complemented with 3D models, for the comparison and optimization of portal design methodology.

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