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Advances in Research on Structural Dynamics and Health Monitoring
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Advances in Research on Structural Dynamics and Health Monitoring

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 2972

Special Issue Editors

Prof. Dr. Shaohong Cheng

E-Mail Website
Guest Editor
Department of Civil & Environmental Engineering, University of Windsor, Windsor, ON N9B 3P4, Canada
Interests: dynamics of structures; vibration and control; cable dynamics and aerodynamics; wind-induced response and wind-resistant design of structures; fluid–structure interaction; fundamentals in bluff body aerodynamics; engineering application of advanced materials; alternative energy
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Haijun Zhou

E-Mail Website
Guest Editor
Civil Engineering Department, Shenzhen University, Shenzhen 518060, China
Interests: intelligent operation and maintenance of urban infrastructure (smart sensing, resilience improvement, intelligent management)
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Civil structures today are facing unprecedented challenges brought on by their modern design and more frequent natural disasters. The rapid development of engineering materials makes it possible to design and construct slenderer structures with longer spans and taller heights, of which the vulnerability to various dynamic excitations and the control of resulted in large-amplitude vibrations become predominant issues. In addition, intensive research effort is urgently needed to examine the dynamic behaviour of structures under extreme loading conditions such as damaging wind and devastating earthquakes. To ensure the safe performance and serviceability of structures during their lifespan, besides properly addressing the characteristics associated with loading and structural response, and evaluating the effectiveness of implemented vibration control solutions, monitoring actual structural parameters to accurately assess the health of a structure during its service life is imperative.

This Special Issue “Advances in Research on Structural Dynamics and Health Monitoring” aims to collect and disseminate the latest developments in the dynamic analysis and health monitoring of civil structures to reflect current research trends and challenges in these fields. We invite original research, in terms of analysis and design methods, numerical modelling, experimental testing, field measurements, and case studies, as well as state-of-the-art review papers. Themes of interest include, but are not limited to:

  • Dynamic response of structures;
  • Safety and serviceability of structures under dynamic loads;
  • Sustainability of civil structures under extreme loads;
  • Refinement of design codes to accommodate extreme loading conditions;
  • Measurement and testing of structural vibrations;
  • Vibration control and implementation of smart materials in control devices;
  • Performance evaluation of various passive, semiactive, and active control schemes;
  • Structural health monitoring;
  • System identification;
  • Structural performance assessment.

Prof. Dr. Shaohong Cheng
Prof. Dr. Haijun Zhou
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 vibrations
  • dynamic response
  • extreme dynamic loads
  • vibration serviceability
  • vibration control
  • smart materials
  • structural health monitoring
  • system identification

Published Papers (6 papers)

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Research

18 pages, 4417 KiB  
Article
Stability Analysis of Seismic Slope Based on Relative Residual Displacement Increment Method
by Weijian Sun, Guoxin Wang and Juntao Ma
Buildings 2024, 14(5), 1211; https://doi.org/10.3390/buildings14051211 - 24 Apr 2024
Viewed by 245
Abstract
The seismic stability analysis of a slope is a complex process influenced by earthquake action characteristics and soil mechanical properties. This paper presents a novel seismic slope stability analysis method using the relative residual displacement increment method in combination with the strength reduction [...] Read more.
The seismic stability analysis of a slope is a complex process influenced by earthquake action characteristics and soil mechanical properties. This paper presents a novel seismic slope stability analysis method using the relative residual displacement increment method in combination with the strength reduction method (SRM) and the actual deformation characteristics of the slope. By calculating the relative displacement of the key point inside the landslide mass and the reference point outside the landslide mass after each reduction, the safety factor of the slope is determined by the strength reduction factor (SRF) corresponding to the maximum absolute value of the relative residual displacement increment that appears after a continuous plastic penetration zone. The method eliminates interference caused by significant displacement fluctuations of key points under earthquake action and reduces the subjective error that can occur when manually identifying displacement mutation points. The proposed method is validated by dynamic calculations of homogeneous and layered soil slopes and compared with three other criteria: applicability, accuracy, and stability. Full article
(This article belongs to the Special Issue Advances in Research on Structural Dynamics and Health Monitoring)
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20 pages, 3433 KiB  
Article
Improved FEM Natural Frequency Calculation for Structural Frames by Local Correction Procedure
by Javier Urruzola and Iñaki Garmendia
Buildings 2024, 14(5), 1195; https://doi.org/10.3390/buildings14051195 - 23 Apr 2024
Viewed by 245
Abstract
The accurate calculation of natural frequencies is important for vibration and earthquake analyses of structural frames. For this purpose, it is necessary to discretize each beam or column of the frame into one or more smaller elements. The required number of elements per [...] Read more.
The accurate calculation of natural frequencies is important for vibration and earthquake analyses of structural frames. For this purpose, it is necessary to discretize each beam or column of the frame into one or more smaller elements. The required number of elements per member increases when the frame’s modal shapes have wavelengths similar to the beam lengths. This paper presents a method that reduces the number of elements needed for a precise calculation. This is achieved by implementing a straightforward local correction to the kinetic and elastic energy of certain elements, resulting in a substantial decrease in error. The validity of this method is demonstrated through a range of examples, from simple canonical cases to more realistic ones. Additionally, the paper discusses the unique features of this method and examines its relationship with other approaches. Full article
(This article belongs to the Special Issue Advances in Research on Structural Dynamics and Health Monitoring)
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30 pages, 28150 KiB  
Article
Innovative Use of UHF-RFID Wireless Sensors for Monitoring Cultural Heritage Structures
by Amedeo Gregori, Chiara Castoro, Micaela Mercuri, Antonio Di Natale and Emidio Di Giampaolo
Buildings 2024, 14(4), 1155; https://doi.org/10.3390/buildings14041155 - 19 Apr 2024
Viewed by 301
Abstract
This paper reports a novel investigation in applying commercial Ultra High-Frequency RFID tags (UHF-RFID tags), which are widely used in logistics as sensing elements in civil engineering structures, particularly for monitoring out-of-plane displacements of brick masonry walls. Both laboratory tests and in situ [...] Read more.
This paper reports a novel investigation in applying commercial Ultra High-Frequency RFID tags (UHF-RFID tags), which are widely used in logistics as sensing elements in civil engineering structures, particularly for monitoring out-of-plane displacements of brick masonry walls. Both laboratory tests and in situ experimental tests assessed the feasibility of the proposed application. Laboratory tests showed a very satisfactory response while the in situ experiments showed a weaker response. Nevertheless, the potential reliability of the proposed technique can be stated. The authors traced back the causes of the performance decrease to environmental interference, mainly due to the extensive presence of a rigid steel frame surrounding the out-of-plane loaded panels. Measurements of displacements, in fact, are obtained indirectly from the phase of UHF-RFID signals that strongly suffer from multipath generated by metallic surfaces. Despite some limitations, the proposed measurement technique permits a reliable and sustainable approach to the monitoring of structures. The use of commercial UHF-RFID wireless tags, in fact, assures easy and fast installation operations and assures the possibility of placing a large number of sensors over the structure with very low maintenance costs with respect to the more traditional monitoring techniques. Moreover, using very thin and small commercial UHR-RFID tags on cultural heritage structures can represent an opportunity for sustainable long-time monitoring with reduced costs. Overall, the results of this study are sufficiently satisfactory to be considered as the opening of new possible scenarios in wireless structural monitoring in the civil engineering field. The authors propose as future work to use UHF-RFID tags for the real-time monitoring of an existing masonry facade that, not being characterized by the presence of a steel frame, can potentially assure an adequate response and properly transmit the electromagnetic signal. Full article
(This article belongs to the Special Issue Advances in Research on Structural Dynamics and Health Monitoring)
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20 pages, 5370 KiB  
Article
Modeling and Loading Effect of Wind on Long-Span Cross-Rope Suspended Overhead Line with Suspension Insulator
by Qixin Qin, Xi Tu, Yujing Hu, Zhisong Wang, Lin Yu and Shengli Hou
Buildings 2024, 14(3), 656; https://doi.org/10.3390/buildings14030656 - 01 Mar 2024
Viewed by 540
Abstract
The long-span Cross-Rope Suspended (CRS) system is composed of a transmission line (conductor), a long-span suspension cable, and an insulator. The previously introduced long-span CRS with a Tension Insulator (CRSTI) has shown applicability in mountainous areas. However, the tension insulator divided the suspension [...] Read more.
The long-span Cross-Rope Suspended (CRS) system is composed of a transmission line (conductor), a long-span suspension cable, and an insulator. The previously introduced long-span CRS with a Tension Insulator (CRSTI) has shown applicability in mountainous areas. However, the tension insulator divided the suspension cable into several sections, which made the construction of a long-span CRS rather difficult. This paper introduces long-span CRS with a Suspension Insulator (CRSSI), in which the suspension cable was not disconnected, and the conductor was supported by a suspension insulator connected to the suspension cable. For the purposes of assessment, the initial shape of the suspension cable with concentrated loading from the self-gravity of the suspension insulator and the conductors was studied, and practical lengths in construction could be calculated exactly. Secondly, the structural performance of CRSSI, including its dynamic properties and the loading effect of wind, was discussed by means of numerical analysis. Vibration modes of the structure were obtained by FE analysis. Finally, structural deformation under static wind loading was studied. The result of the analysis showed that the stiffness of CRSSI was lower than CRSTI. The first frequency of CRSSI was 6% smaller than CRSTI. Regarding static wind loading, additional displacement of the insulator contributed to the maximum displacement of long-span CRSSI. Apparently, the displacement of the suspension insulator increased with wind speed. Moreover, the number of spans has an insignificant influence on tension force and deformation. Full article
(This article belongs to the Special Issue Advances in Research on Structural Dynamics and Health Monitoring)
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15 pages, 7784 KiB  
Article
Temporary Structural Health Monitoring of Historical Széchenyi Chain Bridge
by Balázs Kövesdi, Dénes Kollár and László Dunai
Buildings 2024, 14(2), 535; https://doi.org/10.3390/buildings14020535 - 17 Feb 2024
Viewed by 512
Abstract
A temporary monitoring system was installed on the 175-year-old historical Széchenyi Chain Bridge during its reconstruction. The bridge is in the downtown area in the capital city of Hungary and plays a significant role in the city life of Budapest. Six-month-long measurements were [...] Read more.
A temporary monitoring system was installed on the 175-year-old historical Széchenyi Chain Bridge during its reconstruction. The bridge is in the downtown area in the capital city of Hungary and plays a significant role in the city life of Budapest. Six-month-long measurements were conducted during the reconstruction process of the bridge, yielding crucial insights into the structural behaviour of the historical structure. The measurement results were evaluated; the findings encompass the rotation capacity of the pins between the chain elements and the structural response to temperature changes. This information helped the decision-making between 2021 and 2023 by the designers and construction company during the reconstruction. For instance, daily temperature fluctuations resulted in increased bending moments in the chain elements, rising up to 158% compared to the values observed during a proof load test in 2018. Furthermore, the measurements reveal an approximate 42% increase in normal forces compared to the proof load test, which highlights the high sensitivity of chain bridges to temperature fluctuations, where geometric stiffness plays a crucial role. Reconstruction, namely reducing self-weight, notably intensifies the impact on normal forces and bending moments. These outcomes strongly emphasize the dominance of the dead load and self-weight in the case of chain bridges. Full article
(This article belongs to the Special Issue Advances in Research on Structural Dynamics and Health Monitoring)
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16 pages, 11415 KiB  
Article
Dynamic Assessment of the Structural Behavior of a Pedestrian Bridge Aiming to Characterize and Evaluate Its Comfort Level
by Reina El Dahr, Xenofon Lignos, Spyridon Papavieros and Ioannis Vayas
Buildings 2023, 13(12), 3053; https://doi.org/10.3390/buildings13123053 - 07 Dec 2023
Viewed by 732
Abstract
The assessment of infrastructure integrity is considered paramount to verify its structural health and to build its resilience. In this study, a monitoring strategy, consisting of a pre-developed microcontroller-based data acquisition system (DAQ) hardware and a software program for post processing built on [...] Read more.
The assessment of infrastructure integrity is considered paramount to verify its structural health and to build its resilience. In this study, a monitoring strategy, consisting of a pre-developed microcontroller-based data acquisition system (DAQ) hardware and a software program for post processing built on LabVIEW platform, was conducted to assess the structural behavior of an arch-and-tie pedestrian bridge located in Haidari, Greece, following its construction phase. This endeavor aimed to delineate its systemic state and to verify the fulfillment of comfort criteria stated by EN1990, HIVOSS and SETRA guidelines. To this end, four trademark Bridge Diagnostic Inc. (BDI) triaxial accelerometers were meticulously deployed along the bridge expanse to scrutinize the structure’s response toward a spectrum of induced perturbations. The established framework effectively compiled the acquired acceleration time domain then employed a Butterworth bandpass filter to derive the bridge eigenfrequencies, eigenmodes, and damping ratios. The resultant findings conclusively indicate that the bridge response towards pedestrian crossing conforms to the established specifications and thus does not necessitate the installation of dampers. The bridge maintains comfortable structural integrity for pedestrian traversal up to an upper frequency limit of 3.67 Hz, substantiating its ability to absorb the dissipated energy generated by pedestrian movement. Full article
(This article belongs to the Special Issue Advances in Research on Structural Dynamics and Health Monitoring)
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