Road Bridge Expansion Joints - Reduction of the overrollingNoise caused of Vehicles during crossing the ExpansionJoints

摘要

Our modern understanding of environment protection encloses the protection from noise, especially theprotection from traffic noise. Therefore, the company RW Sollinger Hütte GmbH (RWSH) in Uslar, Germany,developed a noiseless Modular Expansion Joint (MEJ) characterized by a lamella structure of thesurface. This MEJ is equipped with especially extruded elastomeric profile which is inserted between themiddle and edge steel profiles.The new-developed elastomeric profile should fulfil several functions: Beside the known sealing function(watertight surface) the profile can cause a level surface of the lamella crossing and is likely to controlthe gap openings between the middle and edge steel profiles.The level surface is the most important new property of the MEJ to reduce the noise which is caused byrunning over by cars and trucks.The new developed low noise MEJ was already tested under practically oriented conditions. Besides,comparative measurements with other designs of expansion joints have been carried and evaluated.