Hysteretic behavior of resilient hinged wall enhanced with FRP bars

IF 5.6 1区 工程技术 Q1 ENGINEERING, CIVIL Engineering Structures Pub Date : 2025-03-04 DOI:10.1016/j.engstruct.2025.119969
Yan Zhang , Longhe Xu , Xingsi Xie , Ge Zhang
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Abstract

To further improve the seismic resilience of resilient hinged walls (RHWs), in this study, an RHW is enhanced with fiber reinforced polymer bars (FRP bars). In the resulting RHW with FRP bars (RHW-FRP), two resilient hinge devices are symmetrically installed in the corners, and steel bars and FRP bars are installed in a hybrid arrangement in both the wall boundary elements and the middle wallboard. The analysis results indicate that the RHW-FRP exhibits less residual drift and a higher bearing capacity than the RHW. The hybrid layout between the FRP bars and steel bars in both the boundary elements and the middle wallboard of the RHW-FRP is recommended to achieve the optimal enhancement of the seismic resilience of the wall while ensuring economic viability. With this hybrid layout, the bearing capacity of the RHW-FRP can be improved to the same level as that of a conventional wall of the same size, and the residual drift ratio of the wall can be further controlled to about 0.42 % when the wall drift ratio reaches 3 %. Increasing the number of FRP bars in the wall boundary elements is found to have less influence on the hysteretic behavior of the wall, whereas increasing the number of FRP bars in the middle wallboard can significantly increase the wall bearing capacity. With the increase of the axial compression ratio of the wall, the RHW-FRP will exhibit a higher bearing capacity but more residual drift. Moreover, while increasing the strength of the concrete used in the wallboard will improve the wall bearing capacity at a small drift, the bearing capacity may degrade at a larger drift due to the early crush of the concrete.
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来源期刊
Engineering Structures
Engineering Structures 工程技术-工程:土木
CiteScore
10.20
自引率
14.50%
发文量
1385
审稿时长
67 days
期刊介绍: Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.
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