Research on Bridge Movement Joints in Hong Kong for Noise Reduction and Riding Comfort

Project: Research

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Researcher(s)

Description

Due to land shortage, many highway bridges are built at elevated levels by the sides of buildings, sometimes only a few metres away. The principal investigator completed a research assignment in October 2006 commissioned by the Highways Department of the HKSAR to identify the problems of riding quality, noise, and skid resistance in association with bridge movement joints (BMJs). Each BMJ costs from $1.3m to$5m. Six parameters were proposed for assessing the quality of BMJs in relation to noise and comfort: the gap width, substrate conditions, vehicle conditions, nosing materials, level change, and total stiffness change across the nosing. It is important to establish both static and dynamic assessment criteria for a new or a repaired BMJ and to prioritize maintenance and repair in enhancing riding quality and reducing noise within budget. The aim of this research is to assess the health of a BMJ without lane closure and to extract the key physical features of a BMJ from the measured data. The work is of high scientific value as there is little research worldwide on noise and comfort over a BMJ, particularly in a dynamic perspective.

Detail(s)

Project number9041240
Grant typeGRF
StatusFinished
Effective start/end date1/01/0831/03/11