Seismic fragility analysis of sea-crossing continuous rigid frame bridges based on fuzzy failure

Zhang, Chao; Lu, Jianbin; Wang, Piguang; Lai, Zhichao; Jia, Hongyu; Wu, Chengwang

doi:10.1016/j.istruc.2021.07.055

Cited by 19 publications

(3 citation statements)

References 48 publications

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“…The analysis methods of dynamic responses of deep-water bridges considering water-structure interaction include numerical simulation and shaking table test. [127][128][129][130][131][132][133][134][135][136][137] Goyal et al 127 analyzed the dynamic responses of intake towers considering the hydrodynamic forces, and concluded that the hydrodynamic forces increased the dynamic responses of structure. Gao et al 135 built a finite element model of a sea-crossing cable-stayed bridge and analyzed the seismic responses of the bridge with water-structure interaction.…”

Section: Seismic Analysis Considering Water-structure Interactionmentioning

confidence: 99%

“…The analysis methods of dynamic responses of deep‐water bridges considering water–structure interaction include numerical simulation and shaking table test 127–137 . Goyal et al 127 analyzed the dynamic responses of intake towers considering the hydrodynamic forces, and concluded that the hydrodynamic forces increased the dynamic responses of structure.…”

Section: Seismic Analysis Of Deep‐water Bridgesmentioning

confidence: 99%

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Seismic analysis and test facilities of deep‐water bridges considering water–structure interaction: A state‐of‐the‐art review

Zheng

et al. 2022

Earthquake Engineering and Resilience

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Deep‐water bridges are susceptible to severe damages under strong earthquakes. Water–structure interaction will considerably affect the dynamic performance of deep‐water bridges. In the past few decades, researchers have conducted extensive studies on the water–structure interaction and dynamic behavior of bridges through theoretical, numerical, and experimental investigations. This paper presents a comprehensive review on the calculation method for earthquake and wave‐induced hydrodynamic forces. The seismic responses of deep‐water bridges under individual or combined excitation of earthquake, wave, and current are discussed to explore the influence of water–structure interaction on the seismic capacity of deep‐water bridges. Finally, the development of testing facilities that can simulate the water–structure interaction is summarized. Particularly, a new multifunctional dual underwater shaking table system built‐in Tianjin University that can simulate multiple‐support excitation and water–structure interaction simultaneously is introduced in detail for the first time.

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Section: Seismic Analysis Considering Water-structure Interactionmentioning

confidence: 99%

Section: Seismic Analysis Of Deep‐water Bridgesmentioning

confidence: 99%

Seismic analysis and test facilities of deep‐water bridges considering water–structure interaction: A state‐of‐the‐art review

Zheng

et al. 2022

Earthquake Engineering and Resilience

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“…The seismic fragility and damage of the asbuilt and retrofitted old and newly designed multi-span CRFBs (Jung and Andrawes 2018;Abbasi and Moustafa 2019) and the irregular bridges with non-circular tall piers considering ground motion directionality were assessed (Shan et al 2020). The seismic fragility of the offshore (Liang et al 2020), sea-crossing (Zhang et al 2021a) and deep-water CRFBs (Zhang et al 2021b) were evaluated.…”

Section: Introductionmentioning

confidence: 99%

Seismic response characteristics and whiplash effect mechanism of continuous rigid-frame bridges subjected to near-fault ground motions

2023

Bull Earthquake Eng

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Continuous rigid-frame bridge (CRFB) is widely constructed in western China with high seismicity areas. To investigate the seismic response characteristics and whiplash effect mechanism of CRFBs under near-fault ground motions, this study selects a long-span CRFB with high piers as the prototype bridge and develops the nonlinear finite element model based on OpenSees. In this work, three groups of near-fault ground motions having forward directivity pulse, fling-step pulse and non-pulse are selected as seismic inputs. These records are intercepted using significant duration index and scaled to 0.2 g, 0.4 g, and 0.64 g, representing basic ground motions, frequent ground motions and rare ground motions, respectively. The study analyzes the seismic response characteristics of CRFBs and discusses the effects of bearing constraints, ground motion components and vertical excitations on the seismic responses. The numerical results show that the longitudinal vibration, transverse whiplash effect and vertical uplift behavior of main girder are main deformation characteristics of CRFBs. Compared with non-pulse earthquakes, the structural displacements, lateral drift angles, bearing deformations, internal forces and pounding effects all significantly increase under pulse-like earthquakes. There are spatial torsional effects in mid-span girder and main piers and pounding effects between girder ends and transition pier top. The perfectly-free and fixed bearings in transverse direction are not recommended for the seismic design of CRFBs. An optimal stiffness ratio in friction pendulum systems may exist that can minimize bending degree of the main girder. Furthermore, the side-span girder under pure longitudinal excitations can uplift that is closely  Long-He Xu

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Seismic vulnerability of jacket supported large offshore wind turbine considering multidirectional ground motions

James

Haldar

2022

Structures

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Seismic fragility analysis of sea-crossing continuous rigid frame bridges based on fuzzy failure

Cited by 19 publications

References 48 publications

Seismic analysis and test facilities of deep‐water bridges considering water–structure interaction: A state‐of‐the‐art review

Seismic analysis and test facilities of deep‐water bridges considering water–structure interaction: A state‐of‐the‐art review

Seismic response characteristics and whiplash effect mechanism of continuous rigid-frame bridges subjected to near-fault ground motions

Seismic vulnerability of jacket supported large offshore wind turbine considering multidirectional ground motions

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