Shaking table tests and numerical studies on a robust enhanced gas-spring nonlinear energy sink for seismic response control of electricity transmission tower-line systems

IF 5.6 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-04-01 DOI:10.1016/j.engstruct.2025.120226

Kunjie Rong, Chenyu Zhang, Li Tian, Meng Yang, Haomiao Chen, Junrong Gong

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引用次数: 0

Abstract

A robust enhanced gas-spring nonlinear energy sink (REG-NES) is proposed to reduce the seismic responses of the transmission tower-line (TTL) systems, with its working principle and parameter design method presented. A reduced-scale experimental model of the TTL system and the corresponding REG-NES are designed and constructed based on an actual project. The control performance of the REG-NES is studied through a series of shaking table tests, highlighting its performance advantages and smaller working stroke compared to an optimal tuned mass damper (TMD). A refined finite element (FE) model of the reduced-scale TTL system is established and validated by experimental results. The impact of seismic intensity and wave type on the REG-NES performance is analyzed and discussed. The results demonstrate that the REG-NES effectively mitigates the seismic responses of the TTL system, offering comparable control effects, higher stability, and a smaller working stroke than the TMD. The REG-NES maintains stable control effectiveness with increasing peak ground acceleration (PGA) and achieves over 10 %-15 % mitigation for 20 seismic records with different characteristics, indicating insensitivity to input energy levels and excitation frequencies.

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来源期刊

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.