Experimental and numerical study on column-foundation connection through external socket
Abstract
In practice, bridge foundations and pier columns are usually constructed with cast-in-place concrete. Precast columns are currently widely used in highway bridges in China, which can save construction time and improve concrete quality. The connection between precast bridge columns and the foundation can affect how forces transfer from one to the other. This paper investigates using external sockets to form a connection between the bridge column and foundation. This method can accelerate the bridge construction time with the additional advantages of improving the orientation and creating a large erection tolerance. Two types of connections are presented and tested to investigate the behavior of the column-foundation connections and find a more suitable way to use external socket connections. The experimental results show that the column-foundation connection design satisfies the design requirements. The results also show that roughening the column surface within the external socket is more effective at connecting the column to the foundation when using an external socket compared to attaching a steel plate on the column. The experimental results are validated with a finite element analysis, resulting in a proposal regarding the column-foundation connection behavior as well as design recommendations for the external socket connection.
Keyword : column-foundation connection, service condition, gap, ultimate capacity, load-displacement
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
Billington, S. L., Barnes, R. W., & Breen, J. E. (1999). A precast segmental substructure system for standard bridges. PCI Journal, 44(4), 56–73. https://doi.org/10.15554/pcij.07011999.56.73
Cai, Z. K., Wang, Z. Y., & Yang, T. Y. (2018). Experimental testing and modeling of precast segmental bridge columns with hybrid normal- and high-strength steel rebars. Construction and Building Materials, 166, 945–955. https://doi.org/10.1016/j.conbuildmat.2018.01.159
Canha, R. M. F., Campos, G. M., & El Debs, M. K. (2012). Design model and recommendations of column-foundation connection through socket with rough interfaces. Revista IBRACON de Estruturas e Materiais, 5(2), 182–218. https://doi.org/10.1590/S1983-41952012000200005
Cheng, Z., & Sritharan, S. (2019). Side shear strength of preformed socket connections suitable for vertical precast members. Journal of Bridge Engineering, 24(5), 04019025. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001391
Cheng, Z., & Sritharan, S. (2020). Outdoor test of a prefabricated column-pile cap-pile system under combined vertical and lateral loads. Journal of Bridge Engineering, 25(8), 04020052. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001588
Do, T. V., Pham, T. M., & Hao, H. (2018). Numerical investigation of the behavior of precast concrete segmental columns subjected to vehicle collision. Engineering Structures, 156, 375–393. https://doi.org/10.1016/j.engstruct.2017.11.033
Hewes, J. T. (2013). Analysis of the state of the art of precast concrete bridge substructure systems (Final report 687). Arizona Department of Transportation Research Center.
Hung, H.-H., Sung, Y.-C., Lin, K.-C., Jiang, C.-R., & Chang, K.-C. (2017). Experimental study and numerical simulation of precast segmental bridge columns with semi-rigid connections. Engineering Structures, 136, 12–25. https://doi.org/10.1016/j.engstruct.2017.01.012
Li, C., Hao, H., & Bi, K. M. (2017a). Numerical study on the seismic performance of precast segmental concrete columns under cyclic loading. Engineering Structures, 148, 373–386. https://doi.org/10.1016/j.engstruct.2017.06.062
Li, J., Wu, C. Q., Hao, H., & Liu, Z. X. (2017b). Post-blast capacity of ultra-high performance concrete columns. Engineering Structures, 134, 289–302. https://doi.org/10.1016/j.engstruct.2016.12.057
Li, T., Qu, H., Wang, Z., Wei, H., & Jiang, S. (2018). Seismic performance of precast concrete bridge columns with quasistatic cyclic shear test for high seismic zones. Engineering Structures, 166, 441–453. https://doi.org/10.1016/j.engstruct.2018.03.086
Marsh, M. L., Wernli, M., Garrett, B. E., Stanton, J. F., & Eberhard, M. O. (2011). Application of accelerated bridge construction connections in moderate-to-high seismic regions (NCHRP report, Vol. 698). Transportation Research Board. https://doi.org/10.17226/14571
Ministry of Transport of the People’s Republic of China. (2004). China general specifications for design of highway bridges and culverts (JTG D60-2004).
Ministry of Transport of the People’s Republic of China. (2008). Guidelines for seismic design of highway bridges (JTG/T B0201-2008).
Nguyen, W., Trono, W., Panagiotou, M., & Ostertag, C. P. (2017). Seismic response of a rocking bridge column using a precast hybrid fiber-reinforced concrete (HyFRC) tube. Composite Structures, 174, 252–262. https://doi.org/10.1016/j.compstruct.2017.04.058
Shi, X., Cao, Z., Ma, H., & Ruan, X. (2018). Failure analysis on a curved girder bridge collapse under eccentric heavy vehicles using explicit finite element method: Case study. Journal of Bridge Engineering, 23(3), 05018001. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001201
Tazarv, M., & Saiidi, M. S. (2015). Design and construction of precast bent caps with pocket connections for high seismic regions (Report No. CCEER-15-06). Center for Civil Engineering Earthquake Research, Department of Civil and Environmental Engineering, University of Nevada, Reno, Nevada.
Tran, H. V. (2015). Drilled shaft socket connections for precast columns in seismic regions [PhD Dissertation]. University of Washington, USA.
Wang, Z., Qu, Q., Li, T., Wei, H., Wang, H., Duan, H., & Jiang, H. (2018). Quasi-static cyclic tests of precast bridge columns with different connection details for high seismic zones. Engineering Structures, 158, 13–27. https://doi.org/10.1016/j.engstruct.2017.12.035
Wang, Z., Li, T., Qu, H., Wei, H., & Li, Y. (2019). Seismic performance of precast bridge columns with socket and pocket connections based on quasi-static cyclic tests: Experimental and numerical study. Journal of Bridge Engineering, 24(11), 04019105. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001463
Xia, Y., Nassif, H., & Su, D. (2017). Early-age cracking in high performance concrete decks of typical curved steel girder bridges. Journal of Aerospace Engineering, 30(2), B4016003. https://doi.org/10.1061/(ASCE)AS.1943-5525.0000595
Xia, Y., Wang, P., & Sun, L. M. (2019). Neutral axis-based health monitoring and condition assessment techniques for concrete box girder bridges. International Journal of Structural Stability and Dynamics, 23(4), 1940015. https://doi.org/10.1142/S0219455419400157
Yan, Q., Chen, T., & Xie, Z. (2018). Seismic experimental study on a precast concrete beam-column connection with grout sleeves. Engineering Structures, 155, 330–344. https://doi.org/10.1016/j.engstruct.2017.09.027
Zhao, L., Bi, K., M., Hao, H., & Li, X. (2017). Numerical studies on the seismic responses of bridge structures with precast segmental columns. Engineering Structures, 151, 568–583. https://doi.org/10.1016/j.engstruct.2017.08.018