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| Evaluation of Mudjack Method Filling Effect of Immersed Tube Tunnel Using Surface Wave Survey Method |
| CHE Ai-Lan-1, HUANG Xing-Chun-1, GUO Qiang-1, FENG Shao-Kong-2 |
| (1. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Chuo Kaihatsu Corp., Saitamaken, 3320035, Japan) |
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Abstract Based on large-scale test model of the Haihe immersed tube tunnel locating at the centre avenue of Tianjin city, the application study of surface wave survey method, used for detecting filling effect of its underwater pressure casting foundation, was carried out. Considering the frequency characteristic and site environment of the tunnel, the types and qualification of equipments for surface wave survey were selected, setup and arrangement of detectors were optimized, and the equipment configuration and construction practices of fast nondestructive testing for tunnels were developed. The filling effect of mudjack method on tunnel foundation was estimated synthetically by surface wave survey in-situ dispersion and inverse analysis. Moreover, comparing the visual results when the test model removed, the practicability of this new survey techniques and analysis methods was verified. The test results show that this surface wave survey method can detect thick concrete filling without influence of reinforcing bars, and detect mud-jack method filling effect of immersed tube tunnel fast and correctly.
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Received: 15 October 2010
Published: 30 May 2011
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