BOUNDARY ELEMENT METHOD APPLIED TO THEORETICAL ANALYSIS OF LOW FREQUENCY NOISE RADIATED FROM BRIDGE DUE TO MOVING VEHICLES

Abstract

The purpose of this study is to develop an analytical method for low frequency noise radiated from bridges due to moving vehicles. The boundary element method is used to predict the low frequency vibration to overcome drawbacks of the simplified conventional method. The validity of the procedure is verified by comparing with a measured sound pressure level. As an application for this method, effects of the end-cross beam reinforcement as a countermeasure against the low frequency vibration are investigated. Observations reveal that the developed method can provide a good tool for predicting the low frequency vibration radiated from bridge structures.