Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2008.10a
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- Pages.395-406
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- 2008
Influence Analysis of Deep Excavation on the Nearby Undercrossing Road by Centrifuge Model Test
- Huang, Hongwei (Dept. of Geotechnical Engineering, Tongji University) ;
- Xie, Xiongyao (Dept. of Geotechnical Engineering, Tongji University)
- Published : 2008.10.10
Abstract
An excavation with the depth of 32.7m will be constructed as a ventilation shaft in Shanghai metro Line 9. The excavation induced effect on a nearby undercrossing road in operation must be properly evaluated. A centrifuge model test was conducted to study the impact of deep excavation on this existing undercrossing. Detail simulation works are described in this paper. The excavation steps could be simulated in the no-stop state of centrifuge machine. And induced settlements of the undercrossing road in both parallel and vertical directions were analyzed. Protective partition cement soil piles were also simulated in the tests. Simulation test shows deep excavation has a great influence on undercrossing road and the partition pile can obviously deduce the influence.