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| Research on the Impact of Construction of Box Culvert Underpass the Existing Highway on Environment |
| ZHANG Jian1, GAO X iu-mei1,HUANG Sheng-gen2 |
| 1. The Third Railway Survey and Design Institute Group Corporation, Tianjin 300251, China; 2. China University of Geosciences, Wuhan, Hubei 430074, China |
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Abstract Research purposes: How to control the disturbance impact of construction of box culvert underpass the highway on the surrounding environment is a key point for jacking construction ofbox culvert rapidly and safely. In the course of jacking construction of one box culvertwith super large section and many technical difficulties, in order to reduce disturbance to the normal traffic of the existing highway, the underpass technology ofpipe –roof was used. This paper analyzes the tested data in site and researches the law ofdisturbance impactof jacking construction ofbox culvert on the surrounding environment.
Research conclusions:(1) At the place of the same elevation with the box culvert axis, the soils in front of working face generate the biggest horizontal movements. (2) By monitoring the contact stresses between soil and the culvert wal,l the effort of grouting and the total jacking forces can be obtained. (3) The box culvertcan be jacked in along the design path by adjusting jacking forces. (4) The pore pressure is a sensitive and exactindex for monitoring the vibration of soil in the process of box culvert jacking.
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Received: 07 August 2009
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2009, Vol. 26 
