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Published: Građevinar 77 (2025) 10
Paper type: Original scientific paper
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Seismic performance of partially encased composite joints

Hongxin Liu, Bing Xia, Yaming Li, Shuizhong Jia, Xiaomeng Xie

Abstract

To evaluate the seismic performance of partially encased composite (PEC) joints with different connection configurations, quasi-static loading tests were performed on two PEC joint specimens. The experimental investigation focused on the failure mechanisms, hysteresis characteristics, ductility, energy dissipation capacity, and stiffness degradation under low-cycle repeated loading. The results revealed that strong-axis PEC joints exhibited superior ductility and energy-dissipation capacity, whereas weak-axis joints experienced weld failure and demonstrated limited energy dissipation. A finite element model was developed for strong-axis PEC joints and validated using experimental data. Moreover, the restoring force model for strong-axis PEC joints accurately captured the hysteretic behavior, providing valuable insights for structural design applications.

Keywords
PEC beam-column joints, seismic performance, energy dissipation, finite element analysis, restoring model

HOW TO CITE THIS ARTICLE:

Liu, H., Xia, B., Li, Y., Jia, S., Xie, X.: Seismic performance of partially encased composite joints, GRAĐEVINAR, 77 (2025) 10, pp. 929-942, doi: https://doi.org/10.14256/JCE.4237.2025

OR:

Liu, H., Xia, B., Li, Y., Jia, S., Xie, X. (2025). Seismic performance of partially encased composite joints, GRAĐEVINAR, 77 (10), 929-942, doi: https://doi.org/10.14256/JCE.4237.2025

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This paper is licensed under a Creative Commons Attribution 4.0 International License.
Authors:
Hongxin Liu WEB
Hongxin Liu
Shanghai Institute of Architectural Design and Research d.o.o., China
Shanghai Spatial Structure Engineering Research Center, China
Bing Xia WEB
Bing Xia
Shanghai Spatial Structure Engineering Research Center, China
Yaming Li WEB
Yaming Li
Shanghai Institute of Architectural Design and Research d.o.o., China
Shanghai Spatial Structure Engineering Research Center, China
Shuizhong Jia WEB
Shuizhong Jia
Shanghai Institute of Architectural Design and Research d.o.o., China
Shanghai Spatial Structure Engineering Research Center, China
Xiaomeng Xie WEB
Xiaomeng Xie
Shanghai Jieyi Construction Technology Co.