摘要
The first"modern"type of vehicular bridge was built in Hong Kong China in the 1920s.The need for an efficient transportation system to cope with population growth and enable economic development has demanded the construction of more and more bridges since the middle of the 20th century.By 2007,Hong Kong had a total of about 1300 vehicular bridges.Four of these bridges,including the Tsing Ma Bridge,Kap Shui Mun Bridge,Ting Kau Bridge,and the cable-stayed bridge on the Hong Kong-Shenzhen Western Corridor,are considered to be major bridges supported by cables.Currently,the Stonecutters Bridge on Route No.8 is under construction and is expected to be completed in late 2009.At the same time,the Hong Kong-Zhuhai-Macao Bridge will be in its detailed design stage soon.While efforts have been made by bridge builders to construct these giant structures,the upkeeping of these valuable assets at a high standard and ensuring their continuous functioning and performance during their intended lifespans will be another important task for bridge engineers.Wind and structural health monitoring system(WASHMS)will play a key role in this respect.
