Title:
Incremental-launched viaduct with double curvature, plan and elevation, in high speed line - Lugo-Monforte-Orense, San Julián Variant
Author(s):
Carlos J. Bajo Pavía, Marta Pérez Escacho, Juan Sevillano Gacho
Publication:
ACHE
Volume:
69
Issue:
284
Appears on pages(s):
59 - 67
Keywords:
High-speed, Launching, Double-curvature, Support descent
DOI:
Date:
1/1/2018
Abstract:
The construction sequence by means of incremental-launching for curved plan alignment and a straight and convex parabolic elevation, has required the adaptation of the traditional method of launching towards a hybrid method that, preserving the inherent advantages of the primary construction system, has allowed to work with these unusual geometrical conditions. The establishment of the launching procedure in two phases: launching on a transitional trajectory affected by the vertical flexibility of the deck, and the further rectification of the deck elevation by a sequential controlled support descent, has provided viability for this method with a highly competitive result.
ACI International Partner, ACHE Spain, International Partner Access
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