Study on the Fracture Resistance of Mixed Fiber Concrete Lining in a Reverse Fault Tunnel
-
Published:2023-12-20
Issue:1
Volume:14
Page:55
-
ISSN:2076-3417
-
Container-title:Applied Sciences
-
language:en
-
Short-container-title:Applied Sciences
Author:
Wang You1ORCID,
Huang Can1,
Wang Ziwei2,
Wang Rui1,
Yu Siyuan1,
Ma Yue1
Affiliation:
1. School of Civil Engineering, Central South University, Changsha 410075, China
2. Highway Maintenance Center, The Highway Development Center of Gansu Province, Lanzhou 730030, China
Abstract
With the increasing complexity of engineering environments in tunnel construction, some projects are located in areas with adverse geological conditions, including areas prone to fault movements and other geological hazards. Fiber-reinforced concrete can significantly enhance structural performance in such challenging conditions. Currently, the application of high-performance steel-polypropylene fiber in tunnel linings and its anti-fault performance are quite limited. Therefore, this paper focuses on studying the application of steel-polypropylene mixed fiber-reinforced concrete in tunnel lining under reverse fault movements. In this paper, the constitutive relationship of mixed fiber-reinforced concrete is modified based on literature data. Utilizing the Najar formula, fiber-related variables were designed, and a three-dimensional numerical simulation model of a reverse fault tunnel was established. By designing various parameter combination cases, the structural response of tunnel linings was calculated and studied. then the influence patterns of mixed fiber parameters on the anti-fault performance of tunnel linings are summarized, the relationships between main variables are explored, and a reasonable value range for the two fibers is determined, which can provide guidance for practical engineering.
Funder
National Natural Science Foundation of China
China Railway Construction Corporation 2022 Annual Scientific and Technological Research and Development Plan and Funding Subjects
Science and Technology Research and Development Plan of China Railway Corporation in 2020
2022 degrees Guangzhou Metro Design and Research Institute Co.
Science and technology research and development plan topics of China Railway Second Bureau Group Co.
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference35 articles.
1. Balaguru, P.N., and Shah, S.P. (1992). Fiber-Reinforced Cement Composites, McGraw Hill.
2. Cement-based composites with mixtures of different types of fibres;Walton;Composites,1975
3. High performance multimodal fiber reinforced cement composites (HPMFRCC): The LCPC experience;Rossi;Mater. J.,1997
4. Effect of steel fibres at two different stages: The material and the structure;Rossi;Mater. Struct.,1987
5. Boulay, C., Rossi, P., and Tailhan, J.L. (2004, January 20–22). Uniaxial tensile test on a new cement composite having a hardening behavior. Proceedings of the Sixth International RILEM Symposium on Fibre-Reinforced Concretes (BEFIB 2004), Varenna, Italy.