In this paper, finite element models based on Wayaobao Bridge in Chongqing with a span combination of 71m+3×125m+71m are established using the finite element analysis software Midas/Civil 2010 to simulate the right-hand-side bridge. In the modeling, the action of self-weight, secondary dead load, prestressed load, and shrinkage and creep of the concrete -which may affect the natural vibration properties - are taken into account. With the concept of the consolidation damage degree being defined at the beginning, the natural vibration properties of the structure under different conditions with a series of damage degree of 0, 10%, 20%, 30%, and 100% at the side pier top were studied. What is shown from the comparative analysis of the results data is that the natural vibration properties of the whole structure are sensitive to the damage degree, and with the accumulation of the consolidation damage, stiffness of the structure continues to reduce. The process and the conclusion of the study may provide some reference for damage identification of bridge structures as well as similar studies on the connection damage.
Natural Vibration Properties Analysis of Continuous Rigid Frame Bridge Varying with Consolidation Damage at Pier Top
10th Asia Pacific Transportation Development Conference ; 2014 ; Beijing, China
2014-05-05
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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