Home / Multi-bridge seismic bracing
Buckling restrained braces (BRB) are special braces capable to yield in axial tension and compression. They allow to achieve large plastic displacements, produce stable hysteretic behavior, and dissipate large amounts of seismic energy – capabilities that are valuable in seismic. One such application is in ductile end diaphragms, a design concept that aims to protect bridge substructures and limit displacement demands by the use. The proposed bracing system provides a novel solution for controlling peak seismic responses and for eliminating residual deformation for conventional concentrically braced frames.
These proposed configurations offer new improvements to previous multi-core designs [4, 14, 18]. North American codes on the seismic design of steel structures (e.g., CSA S16:19 Canadian code and
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The present study assesses the seismic performance of steel moment resisting frames (MRFs) retrofitted with different bracing systems. Three structura
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Based on this new bracing system, a straightforward seismic design and analysis method is developed for the multi-story BRBs. The step-by-step design procedure allows for the rapid determination of the
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It presents revised theoretical solutions for assessing the seismic performance, including strength and stiffness, of RC multi-column bridge bents and buckling-restrained braces (BRBs).
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Therefore, bridge seismic problems cannot be ignored. One of the most widely used damping methods used to mitigate the seismic responses of bridges in recent
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ABAQUS simulations verified the seismic performance enhancement of FD-BRBs in an eight-story frame, demon-strating improved ductility coefficients and energy dissipation capacity.
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The multi-story steel frames installed with BRBs, SCBs, and combined braces are numerically investigated through nonlinear static and
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Multi-story steel frames are popular building structures. For those with insufficient seismic resistance, their seismic capacity can be improved by
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This study thus aims to select hybrid retrofit strategies for upgrading the seismic performance of reinforced concrete substandard bridges vulnerable to various damage modes to
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The vulnerability of bridges and the effectiveness of suitable mitigation techniques in regions exposed to different seismic scenarios, while lacking
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Abstract: Multi-story steel frames are popular building structures. For those with insu cient seismic resistance, their seismic capacity can be improved by installing buckling-restrained braces
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ystems. This study introduces a novel bracing system for multi-story tall bridge bents, combining hinged links and diagonal BRBs. Based on a fundamental formulation for the new system, a direct
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Abstract: Steel bracing is a most efficient and economical method which improves the seismic performance by increasing lateral stiffness and capacity to resist the lateral forces of a multi storey
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To assess the seismic performance of the retrofitted bridge bent under earthquakes with different intensities, the fragility analysis of the retrofitted bridge bent under near-fault and far-field
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Traditional seismic design strategies for bridges, including bridge bents, prioritize avoiding collapse in significant earthquakes, as substantial seismic damage can compromise their role as vital
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Diagrid systems and other braced frames in which braces are additionally required to support substantial gravity loads; Multi-tier concentrically braced frames requiring special stability considerations; The
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ABSTARCT The seismic performance of hybrid steel structures that use steel bracings and concrete shear walls as lateral force-resisting elements is examined in this research. The study looks at the
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This study employs numerical analysis to evaluate the effectiveness of different bracing systems (Buckling Restrained Braces—BRBs, Shape Memory Alloys—SMAs, and Fluid Viscous
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Simplified mechanics-based approaches for the seismic performance analysis are used for the risk assessment of large bridge portfolios. This study evaluates the applicability and effectiveness
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Implementing energy dissipation braces can be an effective option for mitigating the seismic damage of double- or multi-column bridge bents. This study compares the relative
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However, the addition of multiple BRBs to tall bridge bents may introduce additional force demands and potential damage to the foundations during earthquakes. This study proposes an
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Post-earthquake investigations show that bridges with double/multi-columns could suffer serious damage characterized as significant residual deformation. To improve the seismic resilience
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Shear walls and steel bracings are two common methods used to enhance the seismic resistance of reinforced concrete (RC) multi-storey buildings. In this
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The lateral performance of substandard reinforced concrete (RC) bridge bents seismically retrofitted using buckling-restrained braces is assessed using experimentally obtained
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The seismic response of bridges was calculated for the same 22 pairs of ground motions described previously, and scatter in the resulting BRB ductilities was computed.
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PDF | On Oct 23, 2024, Habib Ghasemi Jouneghani and others published Seismic performance and failure mechanisms evaluation of multi-story elliptic and mega-elliptic bracing frames: Experimental
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This study attempts to investigate the effect of the BRB distribution on the seismic performance of retrofitted multi-story RC tall bridge bents. Different
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The seismic behavior of the frames is evaluated using nonlinear response history analysis. The results show that the seismic performance of the braced frames is improved as nonlinear
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