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Advances in Structural and Mechanical Performances of Structures and Materials
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Advances in Structural and Mechanical Performances of Structures and Materials

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

Deadline for manuscript submissions: 30 September 2024 | Viewed by 4452

Special Issue Editors

Dr. Atsushi Suzuki

E-Mail Website
Guest Editor
Graduate School of Engineering, Tohoku University, Sendai 9808577, Miyagi, Japan
Interests: steel structures; composite structures; braced structures; stability
Prof. Dr. Dinil Pushpalal

E-Mail Website
Guest Editor
Graduate School of International Cultural Studies, Tohoku University, Kawauchi, Aobaku, Sendai 9808577, Miyagi, Japan
Interests: environmental impact; supplementary cementitious materials

Special Issue Information

Dear Colleagues,

The mechanical/structural performances of constructions are crucially essential to securing the safety of society. During their service lives, materials and structures are subjected to various loads, such as earthquakes, wind, water/soil pressure, and extreme conditions: freeze–thaw, corrosion, and heat. Although the situations differ region by region, all of the researchers and engineers struggle to overcome the challenges demanded by societies.

Recent developments in construction engineering have matured in individual fields. Meanwhile, along with these new developments, new problems are born; the construction industry is still confronted with a considerable number of issues that are waiting for solutions. Therefore, the integration of various aspects is necessary for the further development of this field. Based on this concept, as a first step, this Special Issue targets the compilation of achievements in the structural and material fields.

This Special Issue in Buildings, “Advances in Structural and Mechanical Performances of Structures and Materials”, aims to advance the understanding of the structural/mechanical performances of structures and materials. We welcome papers on the following disciplines and related topics, including, but not limited to, the following:

[Types of articles]

Technical papers/case studies/project reports/reviews and state-of-the-art discussions

[Structural aspect of constructions]

Earthquake engineering/structural dynamics/wind engineering/fire engineering/structural reliability/stability/connection design

[Materials aspect of any constructions]

Mechanical properties/durability/corrosion/nondestructive testing/health monitoring/innovative materials

Dr. Atsushi Suzuki
Prof. Dr. Dinil Pushpalal
Guest Editors

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

  • structural engineering
  • earthquake engineering
  • wind engineering
  • mechanical performance
  • connection design
  • materials engineering
  • durability
  • corrosion
  • nondestructive testing
  • health monitoring

Published Papers (6 papers)

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Research

25 pages, 9755 KiB  
Article
Rotational Stiffening Performance of Roof Folded Plates in Torsion Tests and the Stiffening Effect of Roof Folded Plates on the Lateral Buckling of H Beams in Steel Structures
by Yuki Yoshino and Yoshihiro Kimura
Buildings 2024, 14(4), 1158; https://doi.org/10.3390/buildings14041158 - 19 Apr 2024
Viewed by 284
Abstract
Non-structural members, such as roofs and ceilings, become affixed to main beams that are known as structural members. When such main beams experience bending or compressive forces that lead to lateral buckling, non-structural members may act to restrain the resulting lateral buckling deformation. [...] Read more.
Non-structural members, such as roofs and ceilings, become affixed to main beams that are known as structural members. When such main beams experience bending or compressive forces that lead to lateral buckling, non-structural members may act to restrain the resulting lateral buckling deformation. Nevertheless, neither Japanese nor European guidelines advocate for the utilization of non-structural members as lateral buckling stiffeners for beams. Additionally, local buckling ensues near the bolt apertures in the beam–roof folded plate connection due to the torsional deformation induced by the lateral buckling of the H beam, thereby reducing the rotational stiffness of the roof folded plate to a percentage of its ideal stiffness. This paper conducts torsional experiments on roof folded plates, and with various connection methods between these plates and the beams, to comprehend the deformation mechanism of roof folded plates and the relationship between their rotational stiffness and the torsional moment. Then, the relationship between the demand values against restraining the lateral buckling of the main beam and the experimentally determined bearing capacity of the roof folded plate is elucidated. Results indicate the efficacy of utilizing the roof folded plate as a continuous brace. The lateral buckling design capacity of H beams that are continuously stiffened by roof folded plates is elucidated via application of a connection method that ensures joint stiffness between the roof folded plate and the beam while using Japanese and European design codes. Full article
(This article belongs to the Special Issue Advances in Structural and Mechanical Performances of Structures and Materials)
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14 pages, 6215 KiB  
Article
Fundamental Properties of Sub-THz Reflected Waves for Water Content Estimation of Reinforced Concrete Structures
by Akio Tanaka, Koji Arita, Chihiro Kobayashi, Tomoya Nishiwaki, Tadao Tanabe and Sho Fujii
Buildings 2024, 14(4), 1076; https://doi.org/10.3390/buildings14041076 - 12 Apr 2024
Viewed by 282
Abstract
Water plays a significant role in the deterioration of reinforced concrete buildings; therefore, it is essential to evaluate the water content of the cover concrete. This study explores a novel non-destructive method for assessing the water content using sub-terahertz (sub-THz) waves. Among the [...] Read more.
Water plays a significant role in the deterioration of reinforced concrete buildings; therefore, it is essential to evaluate the water content of the cover concrete. This study explores a novel non-destructive method for assessing the water content using sub-terahertz (sub-THz) waves. Among the four frequencies selected to evaluate the water content, an increase in reflectance was observed as the unit volume water content increased, and smaller data scatter was confirmed as the frequency increased. The derived empirical equation can classify the corrosion risk of the rebar environment based on the water content obtained using reflectance measurements. In other words, it can contribute to the diagnosis of the building integrity associated with rebar corrosion. Full article
(This article belongs to the Special Issue Advances in Structural and Mechanical Performances of Structures and Materials)
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20 pages, 7443 KiB  
Article
Study on the Mechanical Properties and Design Method of Frame-Unit Bamboo Culm Members Based on Semi-Rigid Joints
by Guojin Wang, Xin Zhuo, Shenbin Zhang and Jie Wu
Buildings 2024, 14(4), 991; https://doi.org/10.3390/buildings14040991 - 03 Apr 2024
Viewed by 375
Abstract
The frame-unit bamboo culm structure system offers a novel approach to bamboo structure, combining advantages like reduced construction times and simplified joint designs. Despite its benefits, there is limited research on its mechanical properties and computational methodologies. This study conducted bending performance tests [...] Read more.
The frame-unit bamboo culm structure system offers a novel approach to bamboo structure, combining advantages like reduced construction times and simplified joint designs. Despite its benefits, there is limited research on its mechanical properties and computational methodologies. This study conducted bending performance tests on simply supported frame-unit bamboo culm structures, revealing that the bending stiffness of the structure increases with the number of bolts in the edge joints, though with diminishing efficiency. Based on the experimental observations, a calculation model for this type of structure was established, proposing formulas to describe the stiffness relationships between the corner joints, edge joint, and the overall structure. Numerical simulations calculated the stiffness of the edge joint as a function of the number and placement of bolts, indicating that positioning bolts closer to the outer side enhances edge joint stiffness. By inputting the various rotational stiffness values of corner joints into the simulations and stiffness formulas, consistent total stiffness values were obtained, validating the proposed stiffness relationship formulas. The average stiffness values of the corner joints were derived from these formulas and experimental data, and the rotational stiffness of other types of corner points can also be obtained using this method. Furthermore, a finite element computational method tailored for this structural system was introduced, converting the actual structure into a beam element model for calculation. The equivalent joint forces can be distributed to various components of the actual structure, resulting in the internal force distribution of bamboo culms and bolts in the actual structure, thus achieving the design of the components. The calculated displacement values obtained from this method are close to the displacement values in the experiment, proving the feasibility of this method. Full article
(This article belongs to the Special Issue Advances in Structural and Mechanical Performances of Structures and Materials)
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25 pages, 4728 KiB  
Article
Bond-Damaged Prestressed AASHTO Type III Girder-Deck System with Retrofits: Parametric Study
by Haoran Ni and Riyad Aboutaha
Buildings 2024, 14(4), 902; https://doi.org/10.3390/buildings14040902 - 26 Mar 2024
Viewed by 290
Abstract
This research describes an in-depth analysis of the flexural strength of a strengthened AASHTO Type III girder-deck system with debonding-damaged strands based on the finite element software ABAQUS 6.17. To investigate the stand-debonding impact and retrofit, two strengthening techniques by the separate use [...] Read more.
This research describes an in-depth analysis of the flexural strength of a strengthened AASHTO Type III girder-deck system with debonding-damaged strands based on the finite element software ABAQUS 6.17. To investigate the stand-debonding impact and retrofit, two strengthening techniques by the separate use of carbon fiber-reinforced polymer (CFRP) and steel plate (SP) were proposed. A detailed finite element analysis (FEA) model considering strand debonding, material deterioration, and retrofitting systems was developed and verified against relevant experimental data obtained by other researchers. The proposed FEA model and the experimental data were in good agreement. The sensitivity of the numerical model to the mesh size, element type, dilation angle and coefficient of friction was also investigated. Based on the verified FEA model, 156 girder-deck systems were studied, considering the following variables: (1) debonding level, (2) span-to-depth ratio (L/d), (3) strengthening type, and (4) strengthening material amount. The results indicated that the debonding level and span-to-depth ratio had a major effect on both load–deflection behaviors and the ultimate strength. The relationships between the enhancement of the ultimate strength and the thickness of the strengthening material were obtained through regression equations with respect to the CFRP- and SP-strengthened specimens. The coefficient of determination (R2) was 0.9928 for the CFRP group and 0.9968 for the SP group. Full article
(This article belongs to the Special Issue Advances in Structural and Mechanical Performances of Structures and Materials)
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16 pages, 7699 KiB  
Article
Systematic Calculation of Yield and Failure Curvatures of Reinforced Concrete Cross-Sections
by John Bellos and Apostolos Konstantinidis
Buildings 2024, 14(3), 826; https://doi.org/10.3390/buildings14030826 - 19 Mar 2024
Viewed by 1319
Abstract
This paper examines and provides a robust solution to the problem of yield and failure curvatures of reinforced concrete (RC) cross-sections, taking into account cracking. At the same time, it calculates the corresponding necessary reinforcement or the moment of resistance in both yield [...] Read more.
This paper examines and provides a robust solution to the problem of yield and failure curvatures of reinforced concrete (RC) cross-sections, taking into account cracking. At the same time, it calculates the corresponding necessary reinforcement or the moment of resistance in both yield and failure limit states. Computationally, the problem of determining the actual curvatures is reduced to the bending design problem of the cross-section in the yield and failure limit states. This study shows the researcher and the designer how to systematically calculate the strains for different concrete and steel grades and for standard or random cross-sections. This complex process is quite necessary to determine the respective curvatures. The main concept is presented with an emphasis on the “solution regions” as well as the critical cases of the “asymptotic regions”, both in yield and failure limit states. Our wide-ranging research on RC element design under biaxial bending with axial force for both yield and failure limit states has been completed and validated via sophisticated algorithms and is available for publication. Full article
(This article belongs to the Special Issue Advances in Structural and Mechanical Performances of Structures and Materials)
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19 pages, 8516 KiB  
Article
Structural Damage Detection Technique of Secondary Building Components Using Piezoelectric Sensors
by Atsushi Suzuki, Wang Liao, Daiki Shibata, Yuki Yoshino, Yoshihiro Kimura and Nobuhiro Shimoi
Buildings 2023, 13(9), 2368; https://doi.org/10.3390/buildings13092368 - 17 Sep 2023
Cited by 1 | Viewed by 1174
Abstract
With demand for the long-term continued use of existing building facilities, structural health monitoring and damage detection are attracting interest from society. Sensors of various types have been practically applied in the industry to satisfy this need. Among the sensors, piezoelectric sensors are [...] Read more.
With demand for the long-term continued use of existing building facilities, structural health monitoring and damage detection are attracting interest from society. Sensors of various types have been practically applied in the industry to satisfy this need. Among the sensors, piezoelectric sensors are an extremely promising technology by virtue of their cost advantages and durability. Although they have been used in aerospace and civil engineering, their application for building engineering remains limited. Remarkably, recent catastrophic seismic events have further reinforced the necessity of rapid damage detection and quick judgment about the safe use of facilities. Faced with these circumstances, this study was conducted to assess the applicability of piezoelectric sensors to detect damage to building components stemming from concrete cracks and local buckling. Specifically, this study emphasizes structural damage caused by earthquakes. After first applying them to cyclic loading tests to composite beam component specimens and steel frame subassemblies with a folded roof plate, the prospective damage positions were also found using finite element analysis. Crack propagation and buckling locations were predicted adequately. The piezoelectric sensors provided output when the concrete slab showed tensile cracks or when the folded roof plate experienced local buckling. Furthermore, damage expansion and progression were detected multiple times during loading tests. Results showed that the piezoelectric sensors can detect the structural damage of building components, demonstrating their potential for use in inexpensive and stable monitoring systems. Full article
(This article belongs to the Special Issue Advances in Structural and Mechanical Performances of Structures and Materials)
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