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Buildings
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Recent Researches on Connection and Bracing in Steel Structures
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Recent Researches on Connection and Bracing in Steel Structures

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

Deadline for manuscript submissions: closed (10 February 2023) | Viewed by 5369

Special Issue Editor

Prof. Dr. Hiroshi Tagawa

E-Mail Website
Guest Editor
Graduate School of Advanced Science and Engineering, Hiroshima University, Higashihiroshima 739-8524, Japan
Interests: seismic design of steel buildings; vibration control of structures; beam-to-column connections in steel structures; bracing members in steel structures; dynamic response analysis of structures; seismic retrofit of structures

Special Issue Information

Dear Colleagues,

Connection and bracing are two of the most important research areas in steel building structures. The connections, such as beam-to-column joints and column bases, largely influence the characteristics of overall structures. Bracings are often adopted to increase lateral resistance. Especially in regions of high seismicity, their inadequate design can lead to serious structural damage under severe earthquakes. Thus, extensive research has been conducted continuously for their improvement. Furthermore, recent studies have developed innovative configurations such as the bolted beam-to-column connection with dampers and buckling-restrained braces for the passive vibration control of structures.

The aim of this Special Issue “Recent Research on Connection and Bracing in Steel Structures" in Buildings is to provide a platform for the discussion of the recent research achievements in connection and bracing. Because there is overlap between two research areas, the exchange of respective new information is surely meaningful. The expected topics of papers in this Issue cover wide areas including the improvement of existing types of connections and bracings, the development of their innovative configurations, and analyses of steel buildings considering the performance of connections or bracings. The submission of papers for potential inclusion in this Special Issue is warmly invited.

Prof. Dr. Hiroshi Tagawa
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Buildings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • steel structures
  • bolted and welded connections
  • beam-to-column connection
  • hollow section brace
  • buckling-restrained brace
  • gusset plate connection
  • braced frame structure
  • metallic damper
  • hysteretic behavior
  • structural design and analysis

Published Papers (3 papers)

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Research

17 pages, 5281 KiB  
Article
Experimental Behavior and Modelling of Steel Bolted T-Stub Connections
by Xiao Liu, Zhiming Hao, Xin Luo and Zhengbao Jin
Buildings 2023, 13(3), 575; https://doi.org/10.3390/buildings13030575 - 21 Feb 2023
Cited by 2 | Viewed by 1201
Abstract
The paper comprehensively investigates the tension performance of Q355 steel T-stubs, whose nonlinear mechanical behavior is modelled by spring-slider elements. First, tension tests were conducted on seven specimens to explore the tension performance of Q355 steel T-stubs. T-stub connections were discussed in terms [...] Read more.
The paper comprehensively investigates the tension performance of Q355 steel T-stubs, whose nonlinear mechanical behavior is modelled by spring-slider elements. First, tension tests were conducted on seven specimens to explore the tension performance of Q355 steel T-stubs. T-stub connections were discussed in terms of their tension characteristics. Second, a numerical simulation was performed to analyze the stress distribution of T-stub components during deformation. Finally, on the basis of the tension characteristics of the T-stub connections, we constructed the constitutive model’s density function. The constitutive model’s force–displacement relationship was derived mathematically. A method for determining parameters was also developed. With the proposed model, the entire tensile behavior of T-stub connections can be described accurately while reducing the degrees of freedom at the contact interfaces, resulting in more efficient computing. Four parameters are defined physically in the model, and their values can be determined directly by macroscopic experiments. Full article
(This article belongs to the Special Issue Recent Researches on Connection and Bracing in Steel Structures)
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21 pages, 6036 KiB  
Article
Research on Safety Risk Management of a Steel Bracing System Based on Catastrophe Theory
by Huan Chen, Ke Zhang, Kun Zhou, Tugen Feng, Xiaotong Sun, Xingchen Kuang, Yang Li and Zuocai Wang
Buildings 2022, 12(11), 1977; https://doi.org/10.3390/buildings12111977 - 14 Nov 2022
Cited by 2 | Viewed by 1375
Abstract
The stability of a steel bracing system is one of the most important indicators by which to measure the stability of the foundation pit. Although a steel bracing system can be monitored using the axial force data, it is subject to the risk [...] Read more.
The stability of a steel bracing system is one of the most important indicators by which to measure the stability of the foundation pit. Although a steel bracing system can be monitored using the axial force data, it is subject to the risk of sudden changes due to certain factors and has the characteristics of dynamic discontinuity. Therefore, safety risk management should be applied to the mutability of steel bracing systems to ensure stability. We used the steel bracing system of a foundation pit in Ningbo City, China, as the research object. First, through fault tree analysis (FTA) of the characteristics of the steel bracing system, a safety risk identification of the catastrophe risk was carried out. Second, the safety risk was standardized, and a safety risk evaluation index system was established; the validity and stability of the index system were then verified. Next, a catastrophe theory-based evaluation model was established to determine the safety risk level of the steel bracing system. Finally, a steel bracing risk management process was designed, and a safety risk response was proposed based on the results of the evaluation model. The result was that the membership function value belongs to the general risk area, which accords with the actual state of steel bracing in engineering, and subsequent safety risk response measures can be applied. The proposed method performs well in identifying the risk of sudden changes in steel bracing systems; it also rates the risk and offers response measures to ensure the stability of the steel bracing system. Additionally, this method is of significance due to its applicability in various projects. Full article
(This article belongs to the Special Issue Recent Researches on Connection and Bracing in Steel Structures)
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11 pages, 5290 KiB  
Article
A Study on Multi-Objective Optimization of Large Deformable Elastic Plates
by Kiichiro Sawada, Keigo Kajitani, Tatsuya Uno, Junpei Teramoto and Shingo Komatsu
Buildings 2022, 12(9), 1323; https://doi.org/10.3390/buildings12091323 - 29 Aug 2022
Cited by 1 | Viewed by 1868
Abstract
Metallic yielding dampers are damaged early before the main frame during earthquakes and take over the damage of the main frame. Under the assumption of the main frame elasticity, both maximum and residual deformation are expected to be reduced. However, the main frame [...] Read more.
Metallic yielding dampers are damaged early before the main frame during earthquakes and take over the damage of the main frame. Under the assumption of the main frame elasticity, both maximum and residual deformation are expected to be reduced. However, the main frame may be damaged, and the assumption of the main frame elasticity may not hold under major earthquakes. However, large deformable elastic plates have larger yielding deformation than standard steel core plates of the damper and can be used as braces to reduce the seismic response of buildings. This study presents a simple definition of design variables for a topology optimization problem involving large deformable elastic plates with rectangular shapes. As bi-objective functions, yielding deformation and yielding force capacity maximization were used. The optimization results were compared with the findings of a previous study. Finally, the efficacy of the braces was verified by experimental tensile tests. The obtained results are as follows. (1) A distinct trade-off relationship was obtained between tensile yielding deformation and tensile yielding load through muti-objective optimizations using the proposed formulation. (2) The Pareto fronts using the proposed formulation were almost identical to the findings of the previous study. (3) While the experimental test results of yielding tensile load are overestimated by the analysis results by the 10 mm rough grid elements, the test results almost correspond to reanalysis results with the 2.5 mm fine grid elements. Full article
(This article belongs to the Special Issue Recent Researches on Connection and Bracing in Steel Structures)
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