工程力学专业文翻译中英对照英汉互译.docVIP

Busan – Geoje Link: Immersed Tunnel Opening New Horizons Wim Janssen1, Peter de Haas 1, Young-Hoon Yoon2 1 Tunnel Engineering Consultants, the Netherlands: Technical Advisor to Daewoo EC for the Busan - Geoje Fixed Link 2Daewoo EC, Korea ABSTRACT The Busan – Geoje Fixed Link will provide a road connection between the metropolis of Busan and Geoje Island. The Link comprises amongst others two cable stayed bridges and an under water tunnel constructed as a concrete immersed tube tunnel.The immersed tunnel has a number of special features: its length of 3,2 km, the water depth of over 35 m, the severe marine conditions, the soft subsoil and alignment constraints. Combined with the scale of the project these features make the design and the construction of the tunnel a major challenge. It is expected that the project will open up new horizons for the use of immersed tunnel technology. This paper highlights these special features and concentrates on the civil and structural aspects only. 1. INTRODUCTION Busan is the second largest city and a major harbour in South Korea. It is located in the southeast and bordered by the Korean Strait at the south and east side whilst at the north steep mountains arise. The city is developing rapidly; the population grew over the recent years to 3,7 million inhabitants in the city (4,6 million in the agglomeration). The density of population is 4850 inhabitants/km2 which is about three-quarter of the density of Hong Kong. The options for expansion are limited due to its geographic location. The Busan – Geoje Link has to create a direct link between Geoje Island and the city of Busan with the objective to allow Busan to expand, to develop industrial areas on Geoje and to add recreational facilities within driving distance of Busan city. Geoje Island is currently connected to the mainland at the west side of the island. The two hours drive by car from Busan city to Geoje will be reduced to 45 minutes afte