Acoustic aspects of the development of silent loading and unloading devices

摘要

Increasing traffic jam problems during the day in combination with the change of opening times of shops has enlarged the demand of supplying shopping centres during the evening and early morning. Since loading and unloading activities near adjacent residences can be very disturbing to inhabitants rather rigid peak noise limits are applied in The Netherlands. A research program 'Peak' has been developed by the governmental agency Novem to reduce the sound due to (un)loading trucks near shops. This program aims at measures at the sources, operational measures and measures at the location of (un)loading. Several feasibility studies regarding these aspects have been executed. In this paper the measures that have been examined at the source are presented for a number of devices that are used during loading and unloading of trucks. The devices are the cargo compartment, the hydraulic loading flap, the cooling unit and the containers. The measures that are taken to reduce the sound in different pilot plans will be described. The results of measurements before and after measures were taken are presented.