Structural Dynamic Disaster and Protection

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

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 3830

Special Issue Editors

Department of Civil Engineering, Southwest Jiaotong University, Chengdu, China
Interests: impact and dynamics; protective structure; energy dissipation device; flexible barrier; FEA

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Guest Editor
School of Civil engineering, Southwest Jiaotong University, Chengdu, China
Interests: steel structure; impact and protection; building industrialization and information technology; protective structures
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Guest Editor
Department of Civil Engineering, Shanxi University, Taiyuan 030006, China
Interests: impact resistance of structure; composite structure; energy dissipation device; FEA; protective structure
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School of Civil Engineering, Harbin Institute of Technology, Harbin, China
Interests: blast and impact; energy-absorbing materials; steel structure; geopolymer and alkali-activated concrete
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Department of Civil Engineering, University of Ottawa, Ottawa, ON 61350, Canada
Interests: blast and impact; UHPFRC; high-performance steel; FEM
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Special Issue Information

Dear Colleagues,

Recently, hazardous dynamic loads originating from earthquakes, impacts (i.e.: vehicles, ships, rockfalls, and debris flows), and blasts due to natural disasters and accidents have caused catastrophic and devastating structural failures. The mitigation of those dynamic loads on structures and the development of protective structures have become the major concerns for the life safety and resilience of buildings and infrastructures. As a result, it is of great scientific significance and engineering application value to study the dynamic behavior, damage mechanism, and protection measures of engineering structures under dynamic loads.

In this Special Issue, we are looking for papers and case studies of recent studies on structural dynamic disasters and protection. The guest editors cordially welcome high-quality papers focusing on, but not limited to, the following topics:

  • Earthquake disaster and countermeasures;
  • Vehicle impact on road and bridge infrastructure;
  • Ship impact on bridge structures;
  • Drop weight impact;
  • Rockfall and debris flow impact;
  • Blast effects on structures;
  • Behavior and failure of materials under dynamic loads;
  • Behavior and failure of structures under dynamic loads;
  • Materials for absorption of dynamic loads;
  • Structures and devices for absorption of dynamic loads;
  • Advanced numerical simulation method;
  • Design method.

Dr. Lei Zhao
Prof. Dr. Zhixiang Yu
Dr. Xiang Zhu
Dr. Rong Zhang
Dr. Yang Li
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 dynamic disaster
  • earthquake
  • impact loading
  • blast loading
  • dynamic behavior
  • damage mechanism
  • protective structure
  • analysis method
  • design method

Published Papers (4 papers)

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Research

25 pages, 8987 KiB  
Article
Impact of Variable Parameters of Expansion Joints and Bearing Supports on the Vehicle-Induced Vibration of Curved Girder Bridges
by Yu Zheng, Chunfang Lu, Xiaomin Huang, Weibing Xu, Daxing Zhou, Jin Li, Jianxiang Li, Liqun Hou, Kuan Wang and Yulong Sun
Buildings 2024, 14(1), 293; https://doi.org/10.3390/buildings14010293 - 22 Jan 2024
Viewed by 617
Abstract
To study how varying the parameters of expansion joints and bearing supports (E-B parameters) affects the dynamic response of a coupled vehicle–bridge system for curved girder bridges, a dynamic response analysis method for the coupled vehicle–joint (bearing)–bridge system, which takes into account centrifugal [...] Read more.
To study how varying the parameters of expansion joints and bearing supports (E-B parameters) affects the dynamic response of a coupled vehicle–bridge system for curved girder bridges, a dynamic response analysis method for the coupled vehicle–joint (bearing)–bridge system, which takes into account centrifugal forces, was proposed and verified. Subsequently, taking a continuous curved box girder bridge as the prototype, the influence of the E-B parameters on the vehicle-induced dynamic response of the curved girder bridge was explored. The results showed that the dynamic amplification factor (DAF) of the middle beam of the expansion joint (DAF-EJ) and the main girder of the curved bridge (DAF-MG) were both significantly influenced by the E-B parameters. When there were height differences between the middle beam and side beam in the EJ, the DAF-EJ obviously varied, and the DAF-MG increased. When the EJ was damaged, the impact effect of the vehicle on the bearing support increased. The DAF-EJ and DAF-MG both increased with the decrease of the vertical support stiffness of the bearing support. The DAF-EJ was greatly affected by the single-support void at the near-slit end of the lane. The DAF-MGs at the beam end, the 1/4 point and 1/2 point of the first span, and the 1/2 point of the second span, were significantly affected by the single-support void near the measuring point. Compared with the single-support void, the DAF-EJ and DAF-MG more significantly increased under the double-support void. Variation in the height difference of the EJ had a more significant effect on the DAF-EJ and DAF-MG at the beam end, while a vertical stiffness reduction in the bearing support had a more significant effect on the DAF-MG. Full article
(This article belongs to the Special Issue Structural Dynamic Disaster and Protection)
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16 pages, 4804 KiB  
Article
Experimental Study on Flexural Performance of Recycled Steel Fiber Concrete Beams
by Jinqiu Yan, Yongtao Gao, Tao Fan, Qiang Xu, Weiguang Yuan and Xiao Zhao
Buildings 2023, 13(12), 3046; https://doi.org/10.3390/buildings13123046 - 7 Dec 2023
Viewed by 832
Abstract
We sorted the waste from mechanical processing to form recycled steel fibers. In order to study the flexural mechanical properties of reinforced concrete beams after the addition of recycled steel fibers, four recycled steel fiber concrete beams (RSFCBs) and one normal concrete beam [...] Read more.
We sorted the waste from mechanical processing to form recycled steel fibers. In order to study the flexural mechanical properties of reinforced concrete beams after the addition of recycled steel fibers, four recycled steel fiber concrete beams (RSFCBs) and one normal concrete beam (NCB) were designed and poured using the volume fraction of steel fibers (0%, 0.5%, 1%, 1.5%, 2%) as the variables. Normal section bending tests were conducted on them under a concentrated load. We obtained experimental data such as the cracking load, ultimate load, mid-span deflection, and steel and concrete strain of the beam by gradually loading the test beam, and we observed and recorded the development of cracks. The results indicate that the NCB exhibits crushing failure, while the RSFCBs exhibit equilibrium failure. The addition of recycled steel fibers effectively controls the extension of cracks, resulting in a better bending toughness of the beam. The bending performance of RSFCBs with different volume additions shows a trend of first increasing and then decreasing with the increase in steel fiber content. The peak value was reached when the steel fiber content was 1.5%, which increased the bending bearing capacity by 54.72% compared with the NCB. With the increase in steel fiber content, the required load value for tensile steel bars to yield also increases, reaching a peak at a content of 1.5%, which increases the bending bearing capacity by 44.64% compared with the NCB. The addition of recycled steel fibers enables the beam to improve its bearing capacity while limiting the development of longitudinal reinforcement strain, allowing the longitudinal reinforcement to yield under higher loads and improving the overall bending performance of the beam. Full article
(This article belongs to the Special Issue Structural Dynamic Disaster and Protection)
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18 pages, 6675 KiB  
Article
Design Method and Impact Response of Energy-Consuming High-Fall Flexible Protection System for Construction
by Linxu Liao, Zhixiang Yu, Dong Liu, Liru Luo, Liping Guo and Xinquan Tian
Buildings 2023, 13(6), 1376; https://doi.org/10.3390/buildings13061376 - 25 May 2023
Viewed by 893
Abstract
High-fall accidents refer to accidents where construction personnel, building materials, and equipment fall from a height, usually resulting in serious casualties and significant economic losses. This paper proposes a high-fall flexible protection system and its design approach with a tensile yield energy-consuming mechanism [...] Read more.
High-fall accidents refer to accidents where construction personnel, building materials, and equipment fall from a height, usually resulting in serious casualties and significant economic losses. This paper proposes a high-fall flexible protection system and its design approach with a tensile yield energy-consuming mechanism to solve high-fall accidents. The design approach based on component characteristics that obtained through tests contains energy matching, component internal force balance, and a two-level energy consumption mechanism. Component tests were conducted with mesh bursting tests and energy dissipator static tensile tests to obtain the characteristics of the intercepting net under the flexible boundary condition, and the force-displacement model of the ring-type energy dissipater. Combined with an actual project, we designed a high-fall flexible protection system with a protection energy level of 800 kJ for the core tube of an ultra-high-rise building construction using this method. The impact of dynamic response under multiple cases including the overall fall of the construction formwork was analyzed by dynamical numerical calculation models. The result shows that the system can effectively intercept high-falling objects and exhibit good two-stage energy dissipation characteristics to consume the impact energy. Compared with the protection system without an energy consumption mechanism, the internal force response of the steel wire rope and the suspended frame reduce by about 60%, and the energy consumption capacity increase more than six times. The protection technique proposed in this paper can effectively solve the problem of high-level impact protection such as falling construction formwork equipment, and improve construction safety. Full article
(This article belongs to the Special Issue Structural Dynamic Disaster and Protection)
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20 pages, 8794 KiB  
Article
Equivalent Relationship of the Mechanical Behavior of Ring Nets under Static Punching and Dynamic Impact Conditions
by Xin Qi, Qianqian Deng, Lei Zhao, Song Yuan, Zhenliang Li, Xibao Wang and Zhixiang Yu
Buildings 2023, 13(3), 588; https://doi.org/10.3390/buildings13030588 - 22 Feb 2023
Viewed by 870
Abstract
To build the equivalent relationship of the mechanical behavior of ring nets under static punching and dynamic impact conditions, a series of tests with different parameters were conducted. The equivalent coefficients of breaking force, breaking displacement, and net energy dissipation were defined to [...] Read more.
To build the equivalent relationship of the mechanical behavior of ring nets under static punching and dynamic impact conditions, a series of tests with different parameters were conducted. The equivalent coefficients of breaking force, breaking displacement, and net energy dissipation were defined to describe the potential relationship. Besides, sensitivity analyses were made. The results showed that, with the increase of impact velocity, the equivalent coefficients of breaking force decreased as a power function, and the equivalent coefficients of breaking displacement and net energy dissipation both decreased linearly. As the ring diameter increased, the equivalent coefficients of breaking force increased linearly, but the equivalent coefficients of breaking displacement and net energy dissipation both decreased linearly. With the increase of the aspect ratio of ring net, the equivalent coefficients of breaking force and breaking displacement decreased linearly and exponentially, respectively, and the equivalent coefficients of net energy dissipation decreased as a power function. With the increase of the ratio of loading head area to ring net area, the equivalent coefficients of breaking force increased as a power function, and the equivalent coefficients of breaking displacement and net energy dissipation decreased and increased linearly, respectively. The influence degrees of these parameters are as follows: impact velocity > ring diameter > aspect ratio of ring net > ratio of loading area to ring net area. Based on these four parameters, the equivalent coefficient formulas of static punching and dynamic impact were established. Full article
(This article belongs to the Special Issue Structural Dynamic Disaster and Protection)
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