Collapse Failure of Prestressed Concrete Continuous Rigid-Frame Bridge under Strong Earthquake Excitation: Testing and Simulation

Zong, Zhouhong; Xia, Zhanghua; Liu, Haihong; Li, Yale; Huang, Xingyi

doi:10.1061/(asce)be.1943-5592.0000912

Cited by 27 publications

(10 citation statements)

References 18 publications

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“…Infrastructures, such as multi-support structures and long-span structures, are huge in scale and complex in configuration. These structures are important in social life and expensive in cost, so that they must satisfy of safety requirements under the severe earthquakes [16,17]. So far, response spectrum methods have already become the basic approaches for analyzing multi-supported or long-span structures [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Modified Multi-Support Response Spectrum Analysis of Structures with Multiple Supports under Incoherent Ground Excitation

Shen

Shi

et al. 2019

Applied Sciences

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This study develops a modified multi-support response spectrum (MSRS) method, in order to efficiently and accurately calculate the response of multi-support structures under incoherent ground motions. The modified MSRS method adopts three ancillary processes, constructing structural displacement vectors or constructing infinite stiffness members or increasing the degrees of freedom at structural supports. Then, the modified MSRS method is verified in a comparison with the existing MSRS method through a model of a five-span reinforced concrete continuous rigid frame bridge. Finally, the collective structural response spectrum, the structural power spectrum, and the simplified structural power spectrum are deduced from the equation of the motion taking ground motion displacements as the input, and validated through the same bridge model.

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Section: Introductionmentioning

confidence: 99%

Modified Multi-Support Response Spectrum Analysis of Structures with Multiple Supports under Incoherent Ground Excitation

Shen

Shi

et al. 2019

Applied Sciences

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“…Also, in cases where the bridge design follows the old codes, proper seismic reinforcement is required to bring the failure states closer to the desired states, by creating a weak column-strong beam using the principles of seismic design. [7][8]. The study of seismic reinforcement of bridges is of interest to many researchers and information about samples and their characteristics is easily available from experiments in research centres [9].…”

Section: Introductionmentioning

confidence: 99%

Experimental and finite element study of one span concrete bridge bent designed by the requirements of the 1970s, under gravity and lateral load

Bahrani

Nooralizadeh

Sharify

et al. 2022

NMCE

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In recent years, there has been a growing seismic demand for existing bridges and the final redesign of bridges, especially after a major earthquake One method to strengthen concrete frames on bridges is to use steel sheets or profiles to use the confining force. During this study, a sample at 30% scale under gravity and lateral cycle loading was examined within the laboratory. A finite element model is additionally used to compare the behavior of laboratory samples. The laboratory sample was a model of a typical bridge in iran that was generally designed with deficient detailing requirements in agreement with the typical regulations of the 1970s. A finite element analysis set was used to evaluate various parameters in improving the behavior of the laboratory sample. The finite element model correctly predicted the weakness of the model. Subsequently, a reinforced specimen was investigated by increasing the prestressing force within the concrete beam and the thickness of the frp sheets utilized in the bridge pier by the finite element method. The results show the energy absorbed within the hysteresis curves improved the propagation of the failure. The result also showed that a 100% increase in the prestressing load caused a 67% increase in resistance .

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“…In recent years, frequent earthquakes have brought unprecedented challenges to the safety of bridge structures. Modal characteristics and seismic performance of bridges are key factors in bridge design, 4‐6 which are the focus of designers 7‐9 …”

Section: Introductionmentioning

confidence: 99%

“…Modal characteristics and seismic performance of bridges are key factors in bridge design, [4][5][6] which are the focus of designers. [7][8][9] Traditional seismic performance analysis of bridges depends on test. [10][11][12] Test data (modal, seismic load, ground fault, and other working conditions [13][14][15] ) are acquiring by efficient, modular digital sensors at the measuring points of the bridge or scaled model.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance analysis of a concrete filled steel tubes arch bridge: A parametric study

Zhang

Sun

Wen

et al. 2022

Engineering Reports

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Numerical method is widely used in bridge seismic performance analysis, but the diversity and complexity structures increase trouble in the modeling process. This article presents a systematic, universal, and flexible bridge numerical modeling method, and the seismic performance of a concrete filled steel tubes arch bridge is studied. The geometric/attribute model involves structural/stiffness equivalence, and the bridge parametric modeling strategy combined commercial computer‐aided design language of software MATLAB and ANSYS. Data exchange in different fields and rapid reconstruction of numerical model are realizing. Finally, the vibration mode, deformation and internal force of the bridge under seismic load are studied. The results indicating that the proposed parametric model formed a complete data transfer process, and the bridge model can be rapidly modifying and reconstructing. The numerical calculation efficiency is greatly improved because of the structure element is employed instead of solid element. The displacement and internal force of arch rib are mainly controlling by lateral load under horizontal uni‐input, and the combined horizontal and vertical load should be considering in seismic design. The leaning angle and width‐span ratio of transverse braces are considered to improve the seismic performance of bridges.

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Collapse Failure of Prestressed Concrete Continuous Rigid-Frame Bridge under Strong Earthquake Excitation: Testing and Simulation

Cited by 27 publications

References 18 publications

Modified Multi-Support Response Spectrum Analysis of Structures with Multiple Supports under Incoherent Ground Excitation

Modified Multi-Support Response Spectrum Analysis of Structures with Multiple Supports under Incoherent Ground Excitation

Experimental and finite element study of one span concrete bridge bent designed by the requirements of the 1970s, under gravity and lateral load

Seismic performance analysis of a concrete filled steel tubes arch bridge: A parametric study

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