Numerical Investigation of Key Structural Parameters for Middle-Buried Rubber Waterstops

Yimin Wu, Haiping Wu, Chenjie Gong () and Le Huang
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Yimin Wu: School of Civil Engineering, Central South University, Changsha 410075, China
Haiping Wu: School of Civil Engineering, Central South University, Changsha 410075, China
Chenjie Gong: School of Civil Engineering, Central South University, Changsha 410075, China
Le Huang: Hubei Provincial Communications Planning and Design Institute Co., Ltd., Wuhan 430050, China

Mathematics, 2023, vol. 11, issue 16, 1-22

Abstract: Leakage at the lining joints of mountain tunnels is frequent. According to the waterproofing mechanism of waterstops, it is known that the deformation of middle-buried rubber waterstops under stress in typical operating conditions determines their waterproof performance. In addition to the deformation of the adjacent lining concrete, the structural parameters of waterstops are the main factors influencing their deformation under stress. This study combines the common structural components of middle-buried waterstops and considers the bond strength between waterstops and the concrete. A localized numerical model of the lining joint is constructed to explore the impact of geometric parameters, such as hole size, number and position of waterstop ribs, and length and thickness of wing plates on the stress-induced deformation and waterproof performance of the waterstops. The effective mechanisms of different components are revealed, and recommended structural parameters are proposed to further optimize the design of middle-buried rubber waterstops.

Keywords: mountain tunnel; rubber waterstop; numerical investigation; structural optimization (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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