The study of hydrodynamic load on a submerged floating tunnel tube in an ideal fluid layer under the action of earthquake P-wave

CHAO Chunfeng; XIANG Yiqiang

doi:10.3969/j.issn.0253-4193.2013.05.017

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CHAO Chunfeng, XIANG Yiqiang. The study of hydrodynamic load on a submerged floating tunnel tube in an ideal fluid layer under the action of earthquake P-wave[J]. Haiyang Xuebao, 2013, 35(5): 156-161. doi: 10.3969/j.issn.0253-4193.2013.05.017

Citation:

CHAO Chunfeng, XIANG Yiqiang. The study of hydrodynamic load on a submerged floating tunnel tube in an ideal fluid layer under the action of earthquake P-wave[J]. Haiyang Xuebao, 2013, 35(5): 156-161. doi: 10.3969/j.issn.0253-4193.2013.05.017

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The study of hydrodynamic load on a submerged floating tunnel tube in an ideal fluid layer under the action of earthquake P-wave

doi: 10.3969/j.issn.0253-4193.2013.05.017

Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China

Received Date: 2012-06-06

Abstract

Abstract

For the tube and cables of a submerged floating tunnel (SFT) in an ideal fluid layer, it is assumed that the tube can only move in the vertical direction without deformation, and the dynamic effect generated by a mass is the major factor. The equations and boundary conditions to calculate the hydrodynamic load on the SFT tube in the ideal fluid layer under the earthquake P-wave are derived with the wave theory, considering the influence of the upper and nether water and the stiffness and spacing of cables. By the parameter study, the affection of the upper seawater thickness h, the P-wave frequency value ω and incident angle α, the cable stiffness K_c and the spacing L to the value of hydrodynamic load have been analyzed. The results show that the existence of the upper seawater can reduce the value of hydrodynamic load, the resonance will occur when the P-wave frequency is the same to the seawater frequency, the increase of incident angle will substantially reduced the value of hydrodynamic load as well as the smaller stiffness and larger spacing of cables.
- tunnel engineering,
- submerged floating tunnel,
- wave equation,
- hydrodynamic load,
- plane P-wave,
- displacement potential function

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References(15)

References

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