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| Research on Structure Plan of the Combined Construction of Highway and Subway for Xujiapeng Station of Wuhan Metro |
| OU Yang-Bong |
| China Railway Siyuan Survey and Design Group Co. Ltd，Wuhan，Hubei 430063，China |
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Abstract Research purposes:Wuhan Metro Line 7 Xujiapeng transfer subway station is combined construction to underground property development and crossing river highway tunnel，and it is a huge and complex structure. It has super deep foundation pit，is currently the most deep excavation of metro station. Because the distance from Yangtze River is 800m，it has the characteristics of rich groundwater, poor geological conditions，the complex surrounding environment，and the larger project risk. The key point of this research is to adopt which construction method，structure scheme and construction measures to ensure the smooth implementation of engineering safety and effectively.
Research conclusions:(1)The project adopts the top-down method construction and special construction process， which is the safe and effective engineering work to super large and deep foundation pit，and make the project smoothly and safely implement. (2)Double high pressure jet grouting pile is the advanced wall joints waterproof measures，so that the engineering of groundwater has been effectively controlled.(3)This engineering provides a successful example for similar super large and deep foundation pit waterproof curtain and even the wall joints waterproof design，and has a larger reference value for research，design，construction of a new subway station structure of combined construction of highway and subway.
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Received: 03 April 2014
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2014, Vol. 31 
