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DYNAMIC ANALYSIS OF A PRESTRESSED CONCRETE BRIDGE DURING CONSTRUCTION BY CANTILEVER METHOD

Corina Chiotan, Dumitru Daniel Morlova

First published: 2017-06-20https://doi.org/10.5593/sgem2017/14/s05.014View metrics

Abstract

Romania is an active country from a seismic point of view, every year occurring around 250 earthquakes, many of these of a medium to strong level. This is one of the reasons why the seismic design of bridges is very important in Romania. The seismic provisions applied in Romania evolved from P100 - 92 to P100 - 2013, containing major changes regarding the ground acceleration and corner period, but also regarding the structural details. The cantilever method for prestressed concrete bridges has obvious benefits for the wide and deep valleys found in the hills and this construction method was used for many years. According to this construction method, a symmetrical state of strains in the structure is very important. An earthquake occurring during construction may cause accidents. This paper presents the main characteristics of earthquakes in Romania and the modeling of the seismic actions according to design rules in force valid in Romania. The case study presents the dynamic analysis during construction of a prestressed concrete bridge done using the cantilever method, considering on one hand the design spectrum and the accelerograms on the other. Comparative results obtained by the two methods will be presented.

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Publication details

Title
DYNAMIC ANALYSIS OF A PRESTRESSED CONCRETE BRIDGE DURING CONSTRUCTION BY CANTILEVER METHOD
Authors
Corina Chiotan, Dumitru Daniel Morlova
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2017
Pages
111-118
SWS Citekey
Chiotan20175111118
ISSN
1314-2704
ISBN
978-619-7408-00-3
Language
en
Publication type
Conference Paper
Keywords
bridgecantilever methodearthquakedesign spectraaccelerograms.
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