Performance of Steel Pipeline with Concrete Coating (Modeled with Concrete Damage Plasticity) Underseismic Wave Passage

Abstract:

The paper presents the analysis of the dynamic response of a steel pipeline with concrete coating to a real earthquakeregistered in central Poland in 2012. The peak ground acceleration of the shock was scaled up to maximal values predicted for this seismic zone. To represent theinelastic behavior of the material of the concrete coating under dynamic loading, the concrete damaged plasticity constitutive model was assumed.The modelallows to describeplastic strains and irreversible tensile and compression damage that occurs during the cracking process.For seismic analysis two models (uniform and non-uniform) of kinematic excitation were applied. In the modelof uniform excitation it was assumed that the motion of all supports was identical. Inthe model of non-uniform excitation, typical for long structures, the wave passage along the pipelinewith different velocities (500, 400 and 300 m/s) was taken into account. It occurred that for the model of uniform excitation the concrete material of the coating remained elastic with no tensile damage. For the model of non-uniform excitation, inelastic behaviour of the coating was observed. The plastic strain areas appeared above all supports. The tensile damage (cracking) wasalso noticed in these areas: the lower wave velocity was assumed, the greater area of concrete coating was affected by plastic strains and tensile damage (cracking). It was the consequence of the quasi-static effects which resulted from ground deformations imposed on the pipeline during the seismic shock.

• Periodical: Applied Mechanics and Materials (Volume 459)
• Pages: 608-613
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.459.608
• Online since: October 2013
• Authors: Joanna M. Dulinska*, Dorota Jasinska
• Keywords: Concrete Coating, Concrete Damaged Plasticity, Dynamic Response, Non-Uniformseismic Excitation, Pipeline

References

[1] A. Zerva, Spatial variation of seismic ground motion. Modeling and engineering applications, CRC Press, Taylor & Francis Group, Boca Raton, FL, (2009).

[2] J. M. Dulinska, Cooling tower shell under asynchronous kinematic excitation using concrete damaged plasticity model, Key Engineering Materials, 535-536 (2013) 469-472.

DOI: 10.4028/www.scientific.net/kem.535-536.469

[3] J.M. Dulinska, Influence of wave velocity in the ground on dynamic response of large dimensional structures, Int. Journal of Earth Sciences and Engineering, 4 (2011) 538-541.

[4] Y. Yong, Response of pipeline structure subjected to ground motion excitation, Engineering Structures, 19 (1997) 679-684.

DOI: 10.1016/s0141-0296(96)00135-6

[5] J. Lubliner, J. Oliver, S. Oller, E. Oñate, A Plastic-Damage Model for Concrete, International Journal of Solids and Structures, 25 (1989) 229–326.

DOI: 10.1016/0020-7683(89)90050-4

[6] J. Lee, G. L. Fenves, Plastic-Damage Model for Cyclic Loading of Concrete Structures, Journal of Engineering Mechanics, 124 (1998) 892–900.

DOI: 10.1061/(asce)0733-9399(1998)124:8(892)

[7] ABAQUS, Users Manual V. 6. 12-2, Dassault Systemes Simulia Corp., Providence, RI (2012).

[8] T. Jankowiak, T. Lodygowski, Identification of parameters of concrete damage plasticity constitutive model, Foundations of Civil and Environmental Engineering, 6 (2005) 53 - 69.

[9] V. Schenk, Z. Schenková Z., P. Kottnauer, B. Guterch, P. Labák P., Earthquake hazards maps for the Czech Republic, Poland and Slovakia, Acta Geoph. Pol., 49(2001) 287–302.

DOI: 10.1023/a:1008110506690