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Seismic Performance of Long-Span Bridges Subjected to Near/Cross Fault Earthquake: Analysis, Design and Assessment

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

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 7187

Special Issue Editors

Dr. Hongyu Jia

E-Mail Website
Guest Editor
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
Interests: ground motion; cable-stayed bridge; suspension bridge; seismic response
Dr. Chao Zhang

E-Mail Website
Guest Editor
College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
Interests: ground motion simulation; cable-stayed bridge; seismic response; ECC; offshore ground motion; shaking table test; seismic mitigation; seismic resilience
Prof. Dr. Wangbao Zhou

E-Mail Website
Guest Editor
School of Civil Engineering, Central South University, Changsha 410075, China
Interests: seismic resistance of high-speed rail bridges; seismic resistance of steel structure; mechanism of earthquake- induced disasters of high-speed railway bridges; post-earthquake intelligent operation and maintenance of high-speed railway bridges
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue, entititled “Seismic Performance of Long-Span Bridges Subjected to Near/Cross Fault Earthquake: Analysis, Design and Assessment”, aims to collate a variety of research into topic connected to bridge security.

Research is presented into the characteristics of ground motion caused by different earthquake fault rupture mechanisms and the method for simulating near/cross-seismic fault ground motion. Under complex terrains such as mountain canyons and deep-water areas, the relevant experimental technology, numerical simulation and simplified analysis method of the seismic performance of long-span bridges was subjected to near/cross-seismic fault earthquake excitations. Research is compiled on seismic system and shock-absorbing devices for long-span bridges, taking into consideration near/cross-fault earthquakes excitation. Based on the concept of seismic resilience, the seismic resilience improvement method and novel seismic system of long-span bridges, subjected to near/cross-fault earthquakes excitations, were examined.

Dr. Hongyu Jia
Dr. Chao Zhang
Prof. Dr. Wangbao Zhou
Guest Editors

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Keywords

  • fault rupture mechanisms
  • near/cross-fault ground motion
  • simulating earthquake ground motion
  • mountain canyons or offshore site
  • long-span bridges
  • novel seismic system
  • seismic resilience improvement

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Published Papers (4 papers)

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Research

17 pages, 4361 KiB  
Article
A Data-Driven Model for Predictive Modeling of Vortex-Induced Vibrations of a Long-Span Bridge
by Yafei Wang, Hui Feng, Nan Xu, Jiwei Zhong, Zhengxing Wang, Wenfan Yao, Yuyin Jiang and Shujin Laima
Appl. Sci. 2024, 14(6), 2233; https://doi.org/10.3390/app14062233 - 7 Mar 2024
Cited by 4 | Viewed by 1338
Abstract
Vortex-induced vibration (VIV) of long-span bridges can be of large amplitude, which can influence serviceability. Therefore, it is important to predict the response of vortex-induced vibration to aid the management of long-span bridges. A novel data-driven model is proposed to predict the time [...] Read more.
Vortex-induced vibration (VIV) of long-span bridges can be of large amplitude, which can influence serviceability. Therefore, it is important to predict the response of vortex-induced vibration to aid the management of long-span bridges. A novel data-driven model is proposed to predict the time history of the dynamic response of VIV events. Specifically, the proposed model consists of gated recurrent unit (GRU) neural networks and the Newmark-beta method. GRU neural networks can perform accurate sequential prediction, and the Newmark-beta method can complement the physical meaning of the middle output of the proposed model. To aid the accurate prediction of the amplitude of VIV events, the proposed model employs weighted mean square error as the loss function, which can put more emphasis on the amplitude. The proposed model is validated on measured VIV events of a long-span suspension bridge. The weighted mean absolute percentage error and Pearson correlation coefficient of the trained model indicate the effectiveness of the proposed model. Full article
(This article belongs to the Special Issue Seismic Performance of Long-Span Bridges Subjected to Near/Cross Fault Earthquake: Analysis, Design and Assessment)
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22 pages, 7965 KiB  
Article
Analysis of the Effect of Lateral Collision on the Seismic Response of Bridges under Fault Misalignment
by Longwen Fan, Yingxin Hui, Junlv Liu and Tianyi Zhou
Appl. Sci. 2023, 13(19), 10662; https://doi.org/10.3390/app131910662 - 25 Sep 2023
Cited by 4 | Viewed by 1222
Abstract
Mutual dislocation of seismogenic faults during strong earthquakes will result in a large relative displacement on both sides of the fault. It is of great significance to explore the influence of the collision effect between the main beam and the transverse shear key [...] Read more.
Mutual dislocation of seismogenic faults during strong earthquakes will result in a large relative displacement on both sides of the fault. It is of great significance to explore the influence of the collision effect between the main beam and the transverse shear key on the seismic response of the bridge under fault dislocation. In this paper, a series of cross-fault ground motions with different ground permanent displacements are artificially synthesized using a hybrid simulation method. Based on the contact element theory, the Kelvin–Voigt model is used to simulate the lateral collision effect. The effect of lateral collision on the seismic response of the continuous girder bridge is compared from the two aspects of fault dislocation position and fault dislocation degree. On this basis, the analysis of lateral collision parameters is carried out with the aim of reasonably regulating the seismic response of the structure. The results show that, compared with the near-fault bridge, the influence of lateral collision on the cross-fault bridge is stronger. The amplification of the bending moment of the central pier and the limitation of the bearing displacement are five times and two times, respectively, for the near-fault bridge. When the fault has a large dislocation, the weak point of the structural damage is the bending failure of the pier bottom and the residual torsion after the earthquake. The collision parameters of conventional bridges will aggravate the bending moment demand of the pier bottom of cross-fault bridges and limit their bearing displacement too much. Therefore, by appropriately reducing the collision stiffness and increasing the initial gap, the internal force and displacement response distribution of the cross-fault bridge structure can be more reasonable. The study in this paper has reference significance for seismic analysis of cross-fault bridges with transverse shear keys. Full article
(This article belongs to the Special Issue Seismic Performance of Long-Span Bridges Subjected to Near/Cross Fault Earthquake: Analysis, Design and Assessment)
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16 pages, 6349 KiB  
Article
Seismic Reduction Analysis of Super-Long Span Suspension Bridge with Lattice Composite Tower and Damping System: A Case of Study for Qiongzhou Strait Bridge
by Yan Zheng, Yimin Wang, Pu Zhang and Suchao Li
Appl. Sci. 2023, 13(16), 9387; https://doi.org/10.3390/app13169387 - 18 Aug 2023
Viewed by 1595
Abstract
In this paper, we proposed a lattice composite tower damping system to reduce the seismic response of super-long-span suspension bridges. Taking the QiongZhou strait bridge as a case study, we evaluated seismic performances through a finite element analysis (FEA) and shaking-table tests. First, [...] Read more.
In this paper, we proposed a lattice composite tower damping system to reduce the seismic response of super-long-span suspension bridges. Taking the QiongZhou strait bridge as a case study, we evaluated seismic performances through a finite element analysis (FEA) and shaking-table tests. First, the seismic responses of a super-long-span suspension bridge with or without a lattice composite tower to far-fault and near-fault earthquakes were analyzed and compared. The influence of the lattice composite tower on the dynamic characteristics and seismic performance was then investigated using shaking-table tests. Finally, the influences of different damping systems on the seismic response were evaluated, considering factors such as the damper type, damper arrangement scheme and design parameters. The results indicated that lattice composite tower could significantly increase the seismic performance of super-long span suspension bridge, while the optimal damping system could markedly improve the energy dissipation ability of whole system. Subsequently, this could provide references to enhance the seismic safety of the super-long span suspension bridge under strong earthquakes. Full article
(This article belongs to the Special Issue Seismic Performance of Long-Span Bridges Subjected to Near/Cross Fault Earthquake: Analysis, Design and Assessment)
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23 pages, 10809 KiB  
Article
Probabilistic Seismic Sensitivity Analyses of High-Speed Railway Extradosed Cable-Stayed Bridges
by Mingzhi Xie, Jinglian Yuan, Hongyu Jia, Yongqing Yang, Shengqian Huang and Baolin Sun
Appl. Sci. 2023, 13(12), 7036; https://doi.org/10.3390/app13127036 - 11 Jun 2023
Cited by 2 | Viewed by 1687
Abstract
It is known that the extradosed cable-stayed bridge, a hybrid bridge, possesses the virtues of both classic cable-stayed bridges and girder bridges in mechanical behaviors. In this paper, the sensitivity of seismic fragility demand parameters (SFDP) of a high-speed railway extradosed cable-stayed bridge [...] Read more.
It is known that the extradosed cable-stayed bridge, a hybrid bridge, possesses the virtues of both classic cable-stayed bridges and girder bridges in mechanical behaviors. In this paper, the sensitivity of seismic fragility demand parameters (SFDP) of a high-speed railway extradosed cable-stayed bridge is studied systematically along with the consideration of structural parameter uncertainty. Based on the probability distribution and correlation of random parameters, the Latin hypercube sampling method is adopted herein. The dynamic 3D finite element model of the employed bridge is established by using powerful and attractive OpenSEES nonlinear software. A nonlinear incremental dynamic analysis is performed to consider the randomness of structural parameters using sampling analysis. Some important conclusions are drawn indicating that the structural design parameter uncertainty predominantly has influence on the SFDP for fragility analysis of bridge structures. The design parameters of extradosed cable-stayed bridges are categorized and identified as primary, secondary and insensitive parameters. The high sensitivity parameters of extradosed cable-stayed bridges for fragility analysis include friction coefficient of bearing, concrete bulk density, damping ratio, peak compressive strength of confined concrete, component size and peak strain of confined concrete. Additionally, the strength and strain of unconfined concrete cannot be ignored. Furthermore, the uncertainty of structural design parameters fails to be responsible for the cable force responses due to larger girder stiffness. The structural design parameter uncertainty has a significant influence on the responses of extradosed cable-stayed bridges for seismic fragility analysis. Full article
(This article belongs to the Special Issue Seismic Performance of Long-Span Bridges Subjected to Near/Cross Fault Earthquake: Analysis, Design and Assessment)
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