Finite element analysis of highway bridges subjected to moving loads

Document Type

Article

Publication Date

12-3-1993

Abstract

A proper estimate of the dynamic effect of traffic load on the response of highway bridges is becoming increasingly important. Reduction in the ratio of dead load to total load which makes the effect of the live load more pronounced, and the adoption of ultimate-strength design method by many design codes are among those factors that make an accurate evaluation of the live load very important. This paper illustrates how a general purpose finite element package can be used to consider the dynamic effect of a moving load traversing a highway bridge. This objective is achieved by employing the load arrival time option in ADINA. It is shown that, if the problem is modelled properly, the results are as good as the exact solution. Note that the exact solution is practically possible only for a simply supported bridge considering only the effect of the fundamental mode. Thus, using finite element a practical research study can be performed to develop graphical design aides for more accurate evaluation of the impact factor. The versatility and power of finite element technique will also make it possible to easily investigate the spatial nature of response to traffic load. © 1994.

Identifier

0027908069 (Scopus)

Publication Title

Computers and Structures

External Full Text Location

https://doi.org/10.1016/0045-7949(93)90030-H

ISSN

00457949

First Page

837

Last Page

842

Issue

5

Volume

49

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