Experimental study of the seismic performance of pile groups with integrated building-bridge structure in liquefiable soils: a case study

Chao KONG; Hailing  XU; Dong  LIN; Wenteng  PAN; Guang HUANG

doi:10.56748/ejse.24673

Authors

Chao KONG Civil Engineering and Architecture
Hailing XU China Railway Fourth Bureau Group First Engineering Co.
Dong LIN China Railway Fourth Bureau Group First Engineering Co.
Wenteng PAN China Railway Fourth Bureau Group First Engineering Co.
Guang HUANG Southwest University of Science and Technology

DOI:

https://doi.org/10.56748/ejse.24673

Keywords:

Integrated building-bridge structure system, Kunming South Railway, Shaking table experiments, Piles, Dynamic response

Abstract

The integrated building-bridge structure system represents integrated railway stations in China and has emerged as a new structural approach in recent years. This paper presents a case study on large shaking table tests that explore various seismic responses of a pile group system based on the Kunming South Railway Station. The study focused on the dynamic characteristics of both the soil and the pile-superstructure interaction. Findings indicate that pile damage is concentrated on the side facing the direction of vibration, with the middle pile experiencing greater damage than the corner pile. Hysteresis is observed in the growth of the pore pressure ratio during soil liquefaction in saturated conditions. Both the bending moment and the ground pressure acting on the pile
increase with the degree of liquefaction. The maximum pile bending moment occurs at the interface between liquefied and non-liquefied soil layers. During seismic events, the side piles facing the vibration direction experience increased seismic surcharge, while the central piles are subjected to lower loads due to the isolation effect of the side piles.

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References

Blanco G., Ye A., Wang X., 2019. Parametric pushover analysis on elevated RC pile-cap foundations for bridges in cohesionless soils. J. Bridge Eng. 24(1), 04018104.

Cubrinovski M., Bray J.D., Torre C.D.L., et al., 2017. Liquefaction effects and associated damages observed at the Wellington Centerport from the 2016 Kaikoura earthquake. Bull. N.Z. Soc. Earthq. Eng. 50(2), 152–173.

Cubrinovski M., Winkley A., Haskell J., et al., 2014. Spreading-induced damage to short-span bridges in Christchurch, New Zealand. Earthq. Spectra 30(1), 57–83.

Dou, P., Liu, H., Xu, C., et al., 2024. Numerical analysis on seismic response and failure mechanism of articulated pile–structure system in a liquefiable site from shaking-table experiments. Front. Struct. Civ. Eng., 18(7), 1117-1133.

Elsawy M.K., El Naggar M.H., Cerato A.B., et al., 2019. Data reduction and dynamic p-y curves of helical piles from large-scale shake table tests. J. Geotech. Geoenviron. Eng., ASCE 145(10), 04019075.

Escoffier S., 2012. Experimental study of the effect of inclined pile on the seismic behavior of pile group. Soil Dyn. Earthq. Eng. 42(4), 275–291.

Fan K., Gazetas G., Kaynia A., et al., 1991. Kinematic seismic response of single piles and pile groups. J. Geotech. Eng. 117(12), 1860–1879.

Guo W., Yu Z., Zhang H.S., 2012. Application of Story Isolation Technique in the Seismic Reduction of Integrated Building-Bridge Station. In: Sustainable Transportation Systems: Plan, Design, Build, Manage, and Maintain, pp. 464–472.

He Z., Ye A., 2014. Influence of group effect on the seismic performance of elevated pile-cap foundation in sand. China Civ. Eng. J. 47(1), 10.

Hussein, A.F., El Naggar, M.H., 2021. Seismic axial behaviour of pile groups in non-liquefiable and liquefiable soils. Soil Dyn. Earthq. Eng., 149, 106853.

Liang F., Liang X., Zhang H., et al., 2020. Seismic response from centrifuge model tests of a scoured bridge with a pile-group foundation. J. Bridge Eng. 25(8), 04020054.

Sheil B.B., McCabe B.A., 2016. An analytical approach for the prediction of single pile and pile group behaviour in clay. Comput. Geotech. 75, 145–158.

Tang L., Ling X., 2014. Response of an RC pile group in liquefiable soil: A shake-table investigation. Soil Dyn. Earthq. Eng. 67(Dec.), 301–315.

Xu C., Dou P., Du X., et al., 2020. Seismic performance of pile group-structure system in liquefiable and non-liquefiable soil from large-scale shake table tests. Soil Dyn. Earthq. Eng. 138, 106299.

Yang N., Liu Z., Guo T., et al., 2013. Field measurement and analysis of train-induced vibration of "building-bridge integration" structure. Zhongguo Tiedao Kexue 34(2), 29–35. (in Chinese)

Yang Y., Li Q.S., Yan B.W., 2016. Specifications and applications of the technical code for monitoring of building and bridge structures in China. Adv. Mech. Eng. 9(1), 1687814016684272.

Zhang, H., Qian, D., Shen, C., et al., 2020. Experimental investigation on the dynamic response of pile group foundation on liquefiable ground subjected to horizontal and vertical earthquake excitations. Rock Soil Mech., 41(3), 6. https://rocksoilmech.researchcommons.org/journal/vol41/iss3/6/10.16285/j.rsm.2019.5306

Zhang Q., Liu S., Zhang S., et al., 2016. Simplified non-linear approaches for response of a single pile and pile groups considering progressive deformation of pile-soil system. Soils Found. 56(3), 473–484.

Zhang Q.Q., Li S.C., Liang F.Y., et al., 2014. Simplified method for settlement prediction of single pile and pile group using a hyperbolic model. Int. J. Civ. Eng. 12(2), 146–159.

Zhang X., Ruan L., Zhao Y., et al., 2020. A frequency domain model for analysing vibrations in large-scale integrated building–bridge structures induced by running trains. Proc. Inst. Mech. Eng. F J. Rail Rapid Transit 234(2), 226–241.

Zhang X., Tang L., Li X., et al., 2020. Effect of the combined action of lateral load and axial load on the pile instability in liquefiable soils. Eng. Struct. 205, 110074.