DYNAMIC LOAD ON CONTINUOUS MULTI-LANE BRIDGE DECK FROM MOVING VEHICLES

✍ Scribed by X.Q. ZHU; S.S. LAW

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 365 KB
• Volume: 251
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.2001.3996

✦ Synopsis

The dynamic loading on a multi-lane continuous bridge deck due to vehicles moving on top at a constant velocity is investigated. The bridge is modelled as a multi-span continuous orthotropic rectangular plate with line rigid intermediate supports. The vehicle is simulated as a two-axle three-dimensional vehicle model with seven degrees of freedom according to the H20-44 vehicle design loading (AASH¹O ¸RFD Bridge Design Speci,cations 1998 American Association of State Highway and Transportation O$cials [1]). The dynamic behavior of the bridge deck under single and several vehicles moving in di!erent lanes is analyzed using the orthotropic plate theory and modal superposition technique. The dynamic loading is studied in terms of the dynamic impact factor of the bridge deck. The impact factor is found varying in an opposite trend as the dynamic responses for the di!erent loading cases under study.

2002 Elsevier Science Ltd.