Dynamic analysis for fatigue assessment of reinforced concrete slabs in railway viaducts

• Type: Article in International Conference Proceedings Book
• Date: 2015

Authors

Malveiro, J (Author) Other; Carlos Sousa (Author) FEUP; Rui Calçada (Author) FEUP; Ribeiro, D (Author) Other

Conference proceedings International

Title: International Conference on Multi-Span Large Bridges

Pages: 1143-1150

Indexing

Scopus - 3 Citations

Other information

Authenticus ID: P-00G-K04

Abstract (EN): Detailed calculations of applied stresses and internal forces have to be made whenever a realistic fatigue assessment is necessary. The structural response of reinforced concrete slabs in railway viaducts is governed by local effects, and therefore detailed analysis procedures are required for a proper quantification of the stress records due to train passages. In this context, this paper presents a numerical procedure for detailed finite-element analysis of local effects caused by train passages. The interaction between bridge and train is considered by using an iterative procedure that solves the bridge subsystem by the mode-superposition method and the train subsystem by Newmark¿s direct integration method. A static correction procedure is employed to take into account the static contribution of higher-frequency vibration modes (not explicitly considered in the mode-superposition analysis) for a correct quantification of stresses in the reinforced concrete slab. Illustrative results are shown for a real case study. © 2015, Taylor & Francis Group, London.

Language: English

Type (Professor's evaluation): Scientific