E3S Web Conf.
Volume 276, 20212021 5th International Conference on Water Conservancy, Hydropower and Building Engineering (WCHBE 2021)
|Number of page(s)||5|
|Section||Research on Building Structure and Construction Technology|
|Published online||23 June 2021|
Finite Element Analysis on Lining Structure of Diversion Tunnel in a Hydropower Station
1 Northwest Engineering Corporation Limited, Power China, 710065 Xi’an, Shaanxi, China
2 High Slope and Geological Hazard Research & Management Branch, National Energy and Hydropower Engineering Technology R&D Center, 710065 Xi’an, Shaanxi, China
3 Ocean University of China, 266100, Qingdao, Shandong, China
* Corresponding author: firstname.lastname@example.org
Aiming at the high internal and external water pressure tunnels built in unfavorable geological bodies, this study proposes a novel type of composite support structure in which steel plates are poured inside concrete linings. Compared with traditional structures, it has the advantages of higher tensile strength, better crack resistance, and impermeability. Taking the diversion tunnel of a hydropower station as an example, based on linear and non-linear finite element simulations, mechanical properties of the steelconcrete composite lining structure for a hydraulic tunnel in soft surrounding rocks are analyzed. On this basis, the concrete crack control under this supporting condition is verified. Research results can provide a reference for the selection of reasonable steel plate thicknesses and reinforcement types in design.
© The Authors, published by EDP Sciences, 2021
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