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Advances in Structural Dynamic Reliability Theory and Application

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 9561

Special Issue Editors


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Guest Editor
Department of Civil Engineering, Tsinghua University, Beijing 100084, China
Interests: structural reliability; structural health monitoring; offshore structural engineering; engineering risk analysis and decision-making
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Engineering Mechanics, Dalian Institute of Technology, Dalian 116024, China
Interests: structural reliability; structural seismic design and vibration mitigation; random vibration; structural optimization and computational mechanics
Department of Mechanical and Aerospace Engineering, University of Strathclyde, Glasgow, UK
Interests: stochastic model updating; uncertainty quantification and propagation; numerical model verification and validation; advanced monte Carlo simulation; bayesian model updating; imprecise probability

Special Issue Information

Dear Colleagues,

Structural dynamic reliability focuses on the problem of structural reliability under stochastic dynamic excitation. In engineering, dynamic loads exist widely, including seismic loads, wind loads, vehicle loads, etc. Thus, structural dynamic reliability analysis plays an irreplaceable role in structural uncertainty analysis. In general, dynamic reliability analysis uses the theoretical tool of stochastic processes. The advances in probability analysis of stochastic process promote the development of dynamic reliability analysis. The main methods for dynamic reliability analysis include moment methods, spectral methods, Monte Carlo methods, probability density methods, and so on. In recent years, great progress have been made regarding the above dynamic reliability analysis methods, and a lot of research work has been done in their applications in engineering. From a broader perspective, most engineering phenomena or problems are dynamic. Thus, generalized dynamic reliability analysis should contain all the engineering problems related to time-dependent process, such as the structural safety assessment considering structural performance deterioration process. This Special Issue aims to gather contributions presenting the most recent advances on structural dynamic reliability theory and its engineering applications.

Prof. Dr. Zhenhao Zhang
Dr. Yi Zhang
Prof. Dr. Dixiong Yang
Dr. Sifeng Bi
Guest Editors

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Keywords

  • dynamic reliability
  • uncertainty quantification and analysis
  • stochastic process
  • structural reliability
  • structural safety
  • risk assessment
  • random responses
  • reliability design optimization
  • uncertainty model updating
  • seismic reliability, wind resistance reliability, etc

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Published Papers (5 papers)

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Research

20 pages, 4916 KiB  
Article
Study on Bond Anchorage Behavior of Small-Diameter Rebar Planting under Medium and Low Cycle Fatigue Loads
by Kui Chen, Linhao Zhang and Xianqiao Wang
Appl. Sci. 2023, 13(13), 7784; https://doi.org/10.3390/app13137784 - 30 Jun 2023
Viewed by 1048
Abstract
In this paper, we describe how, through the combination of field testing and finite element simulation, the bonding and anchoring performance of small-diameter rebar under the action of medium and low cycle fatigue load was studied and the corresponding conclusions were obtained: ① [...] Read more.
In this paper, we describe how, through the combination of field testing and finite element simulation, the bonding and anchoring performance of small-diameter rebar under the action of medium and low cycle fatigue load was studied and the corresponding conclusions were obtained: ① Through the test, the performance parameters of the 6 mm and 8 mm rebar planting specimens were obtained after the rebar was subjected to 10,000, 50,000 and 100,000 times of medium and low cycle fatigue loading at depths of 10d, 15d and 20d. The analysis shows that the medium and low cycle fatigue load has a significant effect on the elastic ultimate load, elastic ultimate slip and ultimate slip of the small-diameter rebar planting specimens. With the increase in fatigue loading times, the elastic ultimate load of the rebar specimen decreased continuously, and the elastic ultimate slip and ultimate slip showed an increasing trend. By increasing the anchor depth, the influence of fatigue load on the anchoring performance parameters of the rebar planting specimen can be reduced. Under the influence of the upper ultimate condition of 100,000 times of fatigue loading, the ultimate load and failure mode of the planted bars basically did not change compared with the control specimens without fatigue loading. ② Based on the performance parameters of the rebar planting specimens obtained from the field test, the bond–slip constitutive relationship of the adhesive–rebar interface of the small-diameter rebar planting under the medium and low cycle fatigue load is analyzed and proposed. The F-U relationship of the spring element under the fatigue load is defined to simulate the bond–slip behavior of the adhesive–rebar interface. The finite element simulation results are in good agreement with the field test results. ③ Through a large number of finite element numerical simulation results, the elastic ultimate load calculation formulas of 6 mm and 8 mm diameter rebar planting specimens under medium and low cycle fatigue loads are obtained. Full article
(This article belongs to the Special Issue Advances in Structural Dynamic Reliability Theory and Application)
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24 pages, 6959 KiB  
Article
Application of Parametric Forced Tuned Solid Ball Dampers for Vibration Control of Engineering Structures
by Michael Reiterer and Joachim Muik
Appl. Sci. 2023, 13(12), 7283; https://doi.org/10.3390/app13127283 - 19 Jun 2023
Viewed by 1022
Abstract
In this paper, parametric forced tuned solid ball dampers (TSBD) are considered for vibration control of engineering structures in an untypical way. The special feature of the presented investigation is to evaluate the potential application of parametric forcing of the rolling cylindrical or [...] Read more.
In this paper, parametric forced tuned solid ball dampers (TSBD) are considered for vibration control of engineering structures in an untypical way. The special feature of the presented investigation is to evaluate the potential application of parametric forcing of the rolling cylindrical or spherical body in the runway for reducing the vertical vibrations of a vibration-prone main system. Typically, tuned solid ball dampers are applied to structures that are prone to horizontal vibrations only. The coupled nonlinear differential equations of motion are derived and the phenomenon of parametric resonance of the rolling body in the runway is analyzed. A criterion for avoiding parametric resonance is given to achieve the optimal damping effect of the TSBD. In the second part of the article, a method for the targeted use of parametric resonance to reduce the vertical vibrations of engineering structures is presented and verified, considering a biaxially harmonic excited pedestrian bridge. It is shown that, with a suitable choice of damper parameters, a stable vibration of the rolling body in the runway is formed over the course of the vibration despite the occurrence of parametric resonance and that the maximum vertical vibration amplitudes of the main system can be reduced up to 93%. Hence, the here presented untypical application of parametric forced TSBD for reducing the vertical forced vibrations of vibration-prone main systems could be successfully demonstrated. Full article
(This article belongs to the Special Issue Advances in Structural Dynamic Reliability Theory and Application)
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13 pages, 2691 KiB  
Article
Research on Damage Mechanism and Performance-Based Design Process of Reinforced Concrete Column Members
by Yukui Wang, Zhefeng Liu, Jia Guo and Dou Zhong
Appl. Sci. 2023, 13(3), 1452; https://doi.org/10.3390/app13031452 - 22 Jan 2023
Cited by 1 | Viewed by 1288
Abstract
In order to understand the seismic damage assessment of reinforced concrete column members, the coupling relationship between the capacity degradation and the accumulated hysteretic energy and the displacement history was considered. The energy-based damage index under the random variable amplitude loading history was [...] Read more.
In order to understand the seismic damage assessment of reinforced concrete column members, the coupling relationship between the capacity degradation and the accumulated hysteretic energy and the displacement history was considered. The energy-based damage index under the random variable amplitude loading history was proposed. On the basis of preliminary research, the corresponding relationship between the damage index and the construction member parameters and seismic parameters was established, the damage mechanism was analyzed according to the damage index, and then the performance-based design process was proposed. It was found that increase in the stirrup ratio can slow down the damage, and the slowing effect was initially fast and then slows. When the reinforcement ratio is doubled, the damage index decreased by 0.063. The longer the earthquake duration was, the more serious the damage was, and this phenomenon was more obvious when the ductility coefficient was larger. With the increase in the ductility coefficient, the damage continuously increased. Therefore, it is an effective way to decrease the damage by controlling the ductility coefficient. Among all the influencing factors, the fundamental period and seismic intensity contributed more significantly to the damage indicators. When the damage index (performance objective) was determined, the target stirrup ratio can be obtained according to the proposed performance design process, that is, this design process can be used in the performance-based design. The design method based on damage index can make up for the deficiency that the design method based on the ductility coefficient does not consider the earthquake duration. Full article
(This article belongs to the Special Issue Advances in Structural Dynamic Reliability Theory and Application)
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28 pages, 7976 KiB  
Article
Determination of Natural Fundamental Period of Minarets by Using Artificial Neural Network and Assess the Impact of Different Materials on Their Seismic Vulnerability
by Ercan Işık, Naida Ademović, Ehsan Harirchian, Fatih Avcil, Aydın Büyüksaraç, Marijana Hadzima-Nyarko, Mehmet Akif Bülbül, Mehmet Fatih Işık and Barış Antep
Appl. Sci. 2023, 13(2), 809; https://doi.org/10.3390/app13020809 - 6 Jan 2023
Cited by 16 | Viewed by 2490
Abstract
Minarets are slender and tall structures that are built from different types of materials. Modern materials are also starting to be used in such structures with the recent developments in material technology. The seismic vulnerability and dynamic behavior of minarets can vary, depending [...] Read more.
Minarets are slender and tall structures that are built from different types of materials. Modern materials are also starting to be used in such structures with the recent developments in material technology. The seismic vulnerability and dynamic behavior of minarets can vary, depending on the material characteristics. Within this study’s scope, thirteen different material types used in minarets in Türkiye were chosen as variables. A sample minaret model was chosen as an example with nine different heights to reveal how material characteristic change affects seismic and dynamic behavior. Information and mechanical characteristics were given for all the material types. Natural fundamental periods, displacements, and base shear forces were attained from structural analyses for each selected material. The empirical period formula for each material is proposed using the obtained periods, depending on the different minaret heights taken into consideration. At the same time, fundamental natural periods for the first ten modes and 13 different types of materials used in the study were estimated with the established Artificial Neural Network (ANN) model. The real periods from the experimental analyses were compared with the values estimated by the ANN using fewer parameters, and 99% of the results were successful. In addition, time history analyses were used to evaluate the seismic performance of the minaret (three different materials were considered). In this specific case, the acceleration record from the 2011 Van (Eastern Turkiye) earthquake (Mw = 7.2) was taken into consideration. Performance levels were determined for the minaret according to the results obtained for each material. It has been concluded that material characteristics significantly affect the dynamic and seismic behavior of the minarets. Full article
(This article belongs to the Special Issue Advances in Structural Dynamic Reliability Theory and Application)
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14 pages, 3504 KiB  
Article
Fluid-Solid Coupling Effect on Numerical Simulation of Deep Foundation Pit Deformation in Soft Soil Area
by Yu Zhang, Zuodong Jin, Yunlong Hou, Bingbing Han and Charles Ntakiyimana
Appl. Sci. 2022, 12(21), 11242; https://doi.org/10.3390/app122111242 - 6 Nov 2022
Cited by 4 | Viewed by 2131
Abstract
Groundwater is abundant in soft soil areas, which has a significant impact on the excavation deformation of foundation pits. In this paper, based on the monitoring of deep foundation pits with waterproof curtains in Shanghai deep foundation pits, COMSOL Multiphysics is used to [...] Read more.
Groundwater is abundant in soft soil areas, which has a significant impact on the excavation deformation of foundation pits. In this paper, based on the monitoring of deep foundation pits with waterproof curtains in Shanghai deep foundation pits, COMSOL Multiphysics is used to model the layers of the foundation pits and establish a two-dimensional seepage-consolidation coupled model for hierarchical dewatering excavation. The feasibility of numerical simulation of regional foundation pits, the modeling method of the foundation pit seepage model is explored, and the presence or absence of waterproof curtains, and the influence of aquitards on the horizontal displacement of foundation pits and surface settlement outside the pits is analyzed. The research shows that the simulated foundation pit deformation values are in good agreement with the actual monitoring values and that the effect of dewatering and seepage has a great influence on the foundation pit deformation. The waterproof curtain has a significant effect on reducing the drop in the water level outside the pit and controlling the surface settlement. After installing a waterproof curtain, the amount of ground settlement is reduced, but the disadvantage is that the deformation of the enclosure structure increases. Finally, the influence of aquitard on the deformation of foundation pit excavation is simulated, and the distribution characteristics of the flow network diagram under different permeability coefficients are analyzed. According to the analysis of the foundation pit deformation law and flow network diagram, it is considered that the waterproof curtain can effectively reduce the influence of aquitard on foundation pit deformation. Full article
(This article belongs to the Special Issue Advances in Structural Dynamic Reliability Theory and Application)
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