A Comparative Study of Moving Force Identification

Chan, Tommy H.T., Law, S.S., & Yung, T.H. (1997) A Comparative Study of Moving Force Identification. In 6th International Conference on Recent Advances in Structural Dynamics, July 1997, Southampton, U.K..


Traditional ways to acquire truck axle and gross weight information are expensive and subject to bias, and this has led to the development of Weigh-¬in-Motion (WIM) techniques. Most of the existing WIM systems have been developed to measure only the static axle loads. However dynamic axle loads arc also important. Some systems use instrumented vehicles to measure dynamic axle loads, but are subject to bias. These all prompt the need to develop a system to measure the dynamic axle loads using an unbiased. random sample of vehicles. This paper aims to introduce four methods in determining such dynamic forces from bridge responses. The four methods are compared with one another based on maximum number of forces to be identified, minimum number of sensors, sensitivity towards noise and the computation time. It is concluded that acceptable estimates could be obtained by all the four methods. Further work includes merging the four methods into a Moving Force Identification System (MFIS).

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ID Code: 12884
Item Type: Conference Paper
Refereed: Yes
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
Copyright Owner: Copyright 1997 (please consult author)
Deposited On: 05 Mar 2008 00:00
Last Modified: 10 Aug 2011 18:35

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