ARTÍCULO
TITULO

Seismic vulnerability and loading capacity of a wire strained bridge based on structural reliability

Edgar Muñoz    
Federico Núñez    
Jorge Rodríguez    
Alfonso Ramos    
Camilo Otálora    

Resumen

This document presents the analysis of seismic vulnerability and load capacity for Cesar Gaviria Trujilo Viaduct, by means of structural reliability techniques based on instrumentation works. Such study includes: geophysical trial tests, trials tests on material mechanical properties, environmental vibrations, measurements on the effects of traffic load, wireless instrumentation, loading tests, wire strainers tensile strength, etc. Additionally, the study explains structural models on finite elements, which were developed for the bridge, as well as its calibration process based on the loading test, and dynamical properties determined on experimental basis. Furthermore, the study indicates the way stress records collection of all structural elements was conducted, during the construction process, in accordance with the job site log-book. As for reliability, a seismic threat analysis was made as well as dynamic responses on the bridge site, where nine spectrums were obtained at different return periods. By studying strength probability curves and seismic loads of pylons, it was found they have reliability indexes in accordance with recommendations by the international regulations. However, one of the superstructure?s elements, which were introduced to evaluate its capacity on traffic effects, has a reliability index far higher than the ranges recommended by international regulations. Finally, some wire strainers have higher level tensions than specifications admitted during its design and international recommendations for these kinds of bridges.Rev. ing. constr. [online]. 2010, vol.25, n.2, pp. 285-323. ISSN 0718-5073.  http://dx.doi.org/10.4067/S0718-50732010000200006

 Artículos similares

       
 
Rafael Ramírez Eudave, Daniel Rodrigues, Tiago Miguel Ferreira and Romeu Vicente    
The characterisation of the seismic vulnerability of historical constructions represents a complex problem in which the typological variability, the difficulty of performing reliable large-scale assessments and dealing with a large database all play a ro... ver más
Revista: Buildings

 
Giovanna Concu, Mariangela Deligia and Mauro Sassu    
Several Italian cities are characterized by the presence of centuries-old historic walls, which have a cultural heritage value and, due to their structural role as a retaining wall, often influence the safety of adjacent buildings and infrastructure. Anc... ver más
Revista: Infrastructures

 
Wenyu Cao, Benbo Sun and Pengxiao Wang    
Rapidly developed deep learning methods, widely used in various fields of civil engineering, have provided an efficient option to reduce the computational costs and improve the predictive capabilities. However, it should be acknowledged that the applicat... ver más
Revista: Applied Sciences

 
Ivan Hafner, Tomislav Ki?icek and Matija Gams    
The seismic strengthening of buildings in earthquake-prone areas has been a hot topic in recent years, especially for masonry structures. Because there are so many masonry structures and because most were built before seismic codes existed, their seismic... ver más
Revista: Buildings

 
Irene Puncello and Silvia Caprili    
The relevant losses determined by recent earthquakes stressed the vulnerability of historical masonry constructions towards horizontal seismic actions, therefore highlighting the need for reliable approaches for the structural assessment and following re... ver más
Revista: Applied Sciences