Seismic and Durability Performance of Steel Connections

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Structures".

Deadline for manuscript submissions: 30 April 2026 | Viewed by 99

Special Issue Editor


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Guest Editor
School of Civil Engineering, Chang’an University, Xi’an 710061, China
Interests: seismic design; steel frame; connection; cold-formed steel; corrosion; composite structures
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Special Issue Information

Dear Colleagues,

This Special Issue brings together a series of papers that highlight recent progress in the field of steel frame connections, with particular emphasis on seismic analysis and design of innovative connection systems, as well as seismic damage assessment, evaluation, repair, and retrofit strategies.

The severe failures observed in steel connections during the Northridge (1994) and Kobe (1995) earthquakes exposed fundamental design deficiencies and marked a turning point in seismic engineering research. In the decades since, intensive global efforts have led to the development of a wide range of high-performance connections, aiming to improve energy dissipation, ductility, and post-earthquake reparability.

With the rapid emergence of prefabricated and modular steel structures, novel connection types with distinct mechanical behaviors and construction requirements have continued to evolve. These new demands have expanded the research landscape, pushing the boundaries of both experimental investigation and analytical modeling.

In parallel, increasing attention has been paid to the long-term durability of steel connections, especially in aggressive or extreme environments where corrosion can significantly compromise structural performance. Corrosion-induced degradation not only reduces the strength and stiffness of connection components but also alters their seismic response and failure modes, posing new challenges for both design and maintenance. Integrating corrosion resistance and durability considerations into seismic design has therefore become a critical research frontier.

Given that connections often govern the failure modes and deformation capacity of steel frames under seismic loading, understanding their performance—considering both seismic and environmental demands—is crucial for ensuring structural safety and resilience. Ongoing research into their behavior under combined seismic and corrosive actions, degradation mechanisms, and performance-based design is not only academically valuable but also essential for advancing modern, durable, and resilient steel construction practices.

Prof. Dr. Linfeng Lu
Guest Editor

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Keywords

  • steel connections
  • seismic performance
  • corrosion degradation
  • durability
  • post-earthquake retrofit
  • prefabricated structures
  • modular construction
  • failure mechanisms
  • environmental effects
  • performance-based design

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Published Papers (1 paper)

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Research

22 pages, 6291 KiB  
Article
Finite Element Analysis of Vertical Bearing Performance in RC Slab–Column Joints: Effects of Bottom Reinforcement and Concealed Beams
by Xianglan Wei, Gaowang Cai, Naiwen Ke, Yuanwen Liu, Guangyu Wu and Yigang Jia
Buildings 2025, 15(16), 2905; https://doi.org/10.3390/buildings15162905 (registering DOI) - 16 Aug 2025
Abstract
The vertical load-bearing performance of slab–column joints is significantly affected by bottom reinforcement and concealed beams, but existing studies remain insufficient in analyzing their influence mechanisms. To address this, the effects of bottom reinforcement, concealed beam width, and punch-to-span ratio on the mechanical [...] Read more.
The vertical load-bearing performance of slab–column joints is significantly affected by bottom reinforcement and concealed beams, but existing studies remain insufficient in analyzing their influence mechanisms. To address this, the effects of bottom reinforcement, concealed beam width, and punch-to-span ratio on the mechanical properties of joints are systematically investigated in this study through finite element analysis. Validating 2 experimental models and establishing 13 parametric models, the results shows that adding bottom reinforcement can enhance the late-stage bearing capacity and ductility of joints; increasing the ratio of top-to-bottom reinforcement improves bearing capacity but reduces ductility; a wider concealed beam leads to better bearing capacity and ductility performance of the joint; and under the same concealed beam width, a larger punching–span ratio reduces bearing capacity but improves ductility. This study reveals the critical role of bottom reinforcement and concealed beams in joint performance, providing a theoretical basis for optimizing design. Full article
(This article belongs to the Special Issue Seismic and Durability Performance of Steel Connections)
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