Mechanical Characterization of Joints in Segmented Tunnel Liners Due to Thrust Jack Loading

Ouyang, Ziyan; Zheng, Haotian; Patmanidis, Constantine; Naito, Clay; Quiel, Spencer; Mooney, Michael A.; University Transportation Center for Underground Transportation Infrastructure; Colorado School of Mines

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Mechanical Characterization of Joints in Segmented Tunnel Liners Due to Thrust Jack Loading

2022-12-01
By Ouyang, Ziyan ; Zheng, Haotian ; Patmanidis, Constantine ; ...

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Creators:

Ouyang, Ziyan ; Zheng, Haotian ; Patmanidis, Constantine ; Naito, Clay ; Quiel, Spencer ; ... More +

Ouyang, Ziyan ; Zheng, Haotian ; Patmanidis, Constantine ; Naito, Clay ; Quiel, Spencer ; Mooney, Michael A. Less -
Corporate Creators:

University Transportation Center for Underground Transportation Infrastructure ; Colorado School of Mines

University Transportation Center for Underground Transportation Infrastructure ; Colorado School of Mines Less -
Corporate Contributors:

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology Less -
Subject/TRT Terms:

[+]

Fiber Reinforced Concrete Joints (Engineering) Load Tests Reinforcing Bars Steel Fibers Tunnel Lining
Publication/ Report Number:

LUY5T2
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report (Oct. 2020 to Sept. 2022)
Corporate Publisher:

University Transportation Center for Underground Transportation Infrastructure (UTC)
Abstract:

Precast segmental tunnel liners, installed via tunnel boring machines or TBMs, have become increasingly used in modern tunnel construction. The performance of the circumferential joints due to in-plane loading will influence the response of the liner to other types of loading during tunnel operation. This study evaluates the capacity of the circumferential joints for thrust jack loading. Six tests have been conducted to investigate the effect of conventional reinforcement bars, eccentricity, loading and boundary conditions (double- or single-point loading) during the tunnel liner segment installation, with a thrust load that goes up to 22241 kN (five million pounds). All the segments, when subjected to single point loading that went up to 22241 kN (five million pounds), have significant damage, especially the segments that have only been reinforced with steel fibers. Their ultimate capacity is significantly lower than the segments reinforced with steel fibers and steel bars, and the failure is more brittle. The current design method for precast SFRC tunnel liner segments overestimates the loading capacity. The standards and guidelines for precast segmental tunnel lining design for different loading, boundary conditions and reinforcement type are needed.
Format:

PDF
Funding:

69A3551747118
Collection(s):

University Transportation Centers
Main Document Checksum:

[+]

urn:sha-512:b2539c296e6f4aeed64fddc9aabc2c02d93f137c7f28897f1f8db4ba4f008ae7f4f31ed57ecf1eb3617fbea9f58f1623e358ecc97e49f53976c7ea2088bc4f75
Download URL:

https://rosap.ntl.bts.gov/view/dot/83819/dot_83819_DS1.pdf
File Type:

[PDF-34.56 MB]