Abstract
This paper presents an investigation on the behavior of a cofferdam structure constructed by double sheet pile walls above the muck, which is used to construct the inner foundation for an immersed tube tunnel project in Guangzhou China. A detailed three-dimensional FEM model is formulated to simulate the whole processes, including the construction of the cofferdam and the excavation of the inner foundation. The strength reduction method is then adopted to calculate the safety factor of the cofferdam. In addition, the effects of the thickness of the filling sand is highlighted.
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Acknowledgement
This work was sponsored by the National Key R&D Program of China (2017YFC0806004), the project of Guangzhou Municipal Engineering Design & Research Institute (2017-018) and the National Natural Science Foundation of China (51378388).
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Zhao, T., Ding, W., Wei, L., Wu, W., Qiao, Y. (2018). The Behavior Analysis of a Cofferdam Constructed by Double Sheet Pile Wall Above Muck. In: Zhang, D., Huang, X. (eds) Proceedings of GeoShanghai 2018 International Conference: Tunnelling and Underground Construction. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0017-2_3
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DOI: https://doi.org/10.1007/978-981-13-0017-2_3
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