Design of longitudinal tunnel lining joints - experimental investigation on partially loaded reinforced concrete blocks
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Author / Producer
Date
2022
Publication Type
Conference Paper
ETH Bibliography
yes
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Abstract
Precast concrete segmental linings are frequently used in modern tunnelling. In such linings, the longitudinal segment joints, transferring the circumferential loads, typically have a reduced contact surface compared to the full segment cross-section and hence, often govern the design. Most current design approaches for longitudinal joints consider either the beneficial effect of the load dispersion or that of a transverse confinement reinforcement, but not both combined, leading to overly conservative designs. This paper summarises the results of an experimental campaign investigating the effect of the loading width, reinforcement and concrete strength on reinforced concrete blocks subjected to strip loading, simulating the situation of longitudinal tunnel lining joints. Additionally, the experimental results are compared with current design approaches.
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Publication status
published
Book title
Proceedings of the 14th fib International PhD Symposium in Civil Engineering
Journal / series
Volume
58
Pages / Article No.
467 - 474
Publisher
International Federation for Structural Concrete
Event
14th fib International PhD Symposium in Civil Engineering
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Software
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Date created
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Organisational unit
09469 - Kaufmann, Walter / Kaufmann, Walter