Numerical study of a new constructive sequence for movable scaffolding system (MSS) application

José Ramón Díaz de Terán , Vladimir Guilherme Haach , José Turmo , Juan José Jorquera

Abstract

This paper consists in a study of a new contructive sequence of road viaducts with Movable Scaffolding System (MSS) using numerical tools based on finite element method (FEM). Traditional and new sequences are being used in Spain to build viaducts with MSS. The new sequence permits an easier construction of one span per week but implies some other issues related to the need of two prestressing stages per span. In order to improve the efficiency of the new sequence by reducing the number of prestressing stages per span, two solutions are suggested in this study. Results show that the best solution is to introduce the 100% of the prestressing force at the self-supporting core in order to improve the road viaduct construction with movable scaffolding system by reducing execution time without increasing economic costs.

Key Words

movable scaffolding system; span by span casting; loop joint; critical path; transverse deflection; prestressing stage; self-supporting core

Address

José Ramón Díaz de Terán: Departamento de Estruturas, Universidade de Sao Paulo, Brasil Vladimir Guilherme Haach: Departamento de Estruturas, Universidade de Sao Paulo, Brasil José Turmo: Departamento de Ingeniería de la Construcción, Universidad Politécnica de Cataluña, Spain Juan José Jorquera: Departamento de Ingeniería Minera, Geológica y Cartográfica, Universidad Politécnica de Cartagena, 30202 Cartagena, Murcia, Spain

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