FEM simulation of cracking in double shell tunnel lining system and investigation of crack mitigation techniques

Chamila Rankoth, Akira Hosoda, Satoshi Komatsu

Abstract

There are enormous numbers of tunnel structures in Japanese infrastructure system and play a vital role in the transportation network. Among these, a large percentage of highway tunnels in mountainous areas utilizes New Australian Tunnelling Method and consists of reinforced or unreinforced in situ cast double shell lining. With high demand for construction of new tunnels in mountainous areas, rapid construction methods are utilized to reach construction goals. Severe cracking in the second lining of this type of tunnels has become one of the major concerns to achieve durable concrete tunnel lining in Japan. The objective of this study was to understand the possible reasons for cracking of second lining and to investigate probable solutions to mitigate cracking. Finite element method was used to understand the cracking behaviour with respect to exposed environmental conditions. LINK3D, an integrated system which is capable of simulating combined effects of microscopic material behaviour considering environmental conditions and nonlinear structural behaviour was used for finite element simulations. Simulation results were verified by actual site measurements obtained from a previous study and the effect of low temperature concreting was studied. From finite element simulations, it was revealed that appropriate modeling of joint conditions play a major role for accurate simulation of double shell tunnel lining systems. Appropriate modeling of thermal boundary conditions such as heat transfer between second lining and environment, heat conductivity from second lining to other structural components was also proved to be indispensable for accurate simulation of temperature variations due to heat of hydration. The parametric study suggested that vertical cracks near invert might be reduced with low temperature concreting.

Original languageEnglish
Title of host publicationProceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016
PublisherA.A. Balkema Publishers
Pages493-500
Number of pages8
ISBN (Electronic)9784990914806
StatePublished - 2016
Event11th fib International PhD Symposium in Civil Engineering, FIB 2016 - Tokyo, Japan

Other

Other11th fib International PhD Symposium in Civil Engineering, FIB 2016
CountryJapan
CityTokyo
Period16/8/2916/8/31

Fingerprint

Linings
Tunnels
Tunnel linings
Temperature
Cracks
Finite element method
Hydration
Thermal conductivity
Boundary conditions
Heat transfer

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Rankoth, C., Hosoda, A., & Komatsu, S. (2016). FEM simulation of cracking in double shell tunnel lining system and investigation of crack mitigation techniques. In Proceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016. (pp. 493-500). A.A. Balkema Publishers.

FEM simulation of cracking in double shell tunnel lining system and investigation of crack mitigation techniques. / Rankoth, Chamila; Hosoda, Akira; Komatsu, Satoshi.

Proceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016. A.A. Balkema Publishers, 2016. p. 493-500.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Rankoth, C, Hosoda, A & Komatsu, S 2016, FEM simulation of cracking in double shell tunnel lining system and investigation of crack mitigation techniques. in Proceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016. A.A. Balkema Publishers, pp. 493-500, 11th fib International PhD Symposium in Civil Engineering, FIB 2016, Tokyo, Japan, 29-31 August.
Rankoth C, Hosoda A, Komatsu S. FEM simulation of cracking in double shell tunnel lining system and investigation of crack mitigation techniques. In Proceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016. A.A. Balkema Publishers. 2016. p. 493-500.

Rankoth, Chamila; Hosoda, Akira; Komatsu, Satoshi / FEM simulation of cracking in double shell tunnel lining system and investigation of crack mitigation techniques.

Proceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016. A.A. Balkema Publishers, 2016. p. 493-500.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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