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Comparison of seismic assessment procedures for masonry arch bridges
被引:95
作者:
Pela, Luca
[1
]
Aprile, Alessandra
[2
]
Benedetti, Andrea
[3
]
机构:
[1] Tech Univ Catalonia UPC, DEC Dept, Barcelona 08034, Spain
[2] Univ Ferrara, ENDIF Dept, I-44100 Ferrara, Italy
[3] Univ Bologna, DICAM Dept, I-40136 Bologna, Italy
关键词:
Masonry;
Arch bridge;
Pushover analysis;
Nonlinear dynamic analysis;
Control node;
Earthquake response;
STATIC PUSHOVER;
BUILDINGS;
COLLAPSE;
D O I:
10.1016/j.conbuildmat.2012.08.046
中图分类号:
TU [建筑科学];
学科分类号:
0813 ;
摘要:
This work delves into the seismic assessment of masonry bridges through a detailed analysis of an existing triple-arched bridge. Firstly, the effectiveness of the nonlinear static analysis is evaluated by means of a comparison with a comprehensive set of 84 nonlinear dynamic analyses. Secondly, the choice of the control node on the finite element structural model is investigated, in order to understand its influence on the prediction of seismic capacity. Although the node located at the top level is usually considered to characterize the force-displacement response of common structures, such a choice is not suitable for the considered case-study. The node located at the level of the bridge's centre of mass proves to be a better choice since it ensures a more reliable estimation of the seismic capacity. The critical discussion of the numerical analyses results gives useful indications towards an improved procedure for the seismic assessment of the considered structural typology. (C) 2012 Elsevier Ltd. All rights reserved.
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页码:381 / 394
页数:14
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