Seismic Performance of a Concrete Highway Tunnel Using a Concrete Damage Plasticity Model

Joanna M. Dulinska; Izabela J. Murzyn

doi:10.4028/www.scientific.net/KEM.711.966

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 711Seismic Performance of a Concrete Highway Tunnel...

Seismic Performance of a Concrete Highway Tunnel Using a Concrete Damage Plasticity Model

Abstract:

In the paper a non-linear dynamic response of a concrete highway tunnel to a natural earthquake is presented. The acceleration time history of the registered shock was applied as seismic excitation acting in three directions. The peak ground acceleration (PGA) of the shock was 0.5 g. A three-dimensional FE model of the concrete tunnel section (600 m long) and surrounding soil layers was created with the ABAQUS software. To represent the inelastic behavior of the tunnel under the earthquake, a concrete damage plasticity model was assumed as a constitutive model for the concrete. A model of spatially varying ground motion, which takes so called “wave passage effect” was implemented for the dynamic analysis. Two velocities of seismic wave propagation were assumed: 500 and 1000 m/s. These velocities are typical for soft and stiff bedrock, respectively. It turned out that in case of stiffer bedrock, in which seismic waves propagate faster, the damage pattern shows less cracking than in case of soft bedrock. The distribution of plastic and damage computed indices also allowed to assess the impact of the shock on the structure. It turned out that the analyzed shock with PGA of 0.5 g was strong enough to cause severe destruction (cracking) in the tunnel lining. Finally, the transverse pattern of cracks, that was obtained from the calculations, was in good agreement with damages observed during severe earthquakes.

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Periodical:

Key Engineering Materials (Volume 711)

Pages:

966-973

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.711.966

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Online since:

September 2016

Authors:

Joanna M. Dulinska, Izabela J. Murzyn*

Keywords:

Concrete Damage Plasticity Model, Concrete Tunnel, Dynamic Response, Seismic Performance

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* - Corresponding Author

References

[1] K. Yashiro, Y. Kojima, M. Shmizu, Historical earthquake damage to tunnels in Japan and case studies of railway tunnels in the 2004 Niigataken-Chuetsu Earthquake, RTRI, 48(3) (2007) 136-141.