Dynamic Anomalies in a Modular Bridge Expansion Joint
暂无分享,去创建一个
Environmental noise complaints from homeowners near bridges with modular bridge expansion joints (MBEJs) led to an engineering investigation into the noise production mechanism. The investigation identified modal vibration frequencies in the MBEJ coupling with acoustic resonances in the chamber cast into the bridge abutment below the MBEJ. This initial acoustic investigation was soon overtaken by observations of fatigue induced cracking in structural beams transverse to the direction of traffic. These beams are, in the English-speaking world, universally referred to as center beams. However, in Europe the term lamellae is equally common. A literature search revealed little to describe the structural dynamics behavior of MBEJs but showed that there was an accepted belief dating from around 1973 that the loading was dynamic. In spite of this knowledge many bridge design codes used throughout the world specify a static or quasi-static load case with no mention of the dynamic behavior. This paper identifies t...
[1] Charles W. Roeder. Fatigue cracking in modular expansion joints , 1993 .
[2] Roberto Crocetti. On some Fatigue Problems Related to Steel Bridges , 2001 .
[3] C W Roeder. FIELD MEASUREMENTS OF DYNAMIC WHEEL LOADS ON MODULAR EXPANSION JOINTS. FINAL RESEARCH REPORT , 1995 .
[4] Joseph Edward Shigley,et al. Mechanical engineering design , 1972 .
[5] Roberto Crocetti,et al. FATIGUE PERFORMANCE OF MODULAR BRIDGE EXPANSION JOINTS , 2003 .