Vol. 22, No. 2, pp. 208-221 (2026)
EXPERIMENTAL STUDY ON SEISMIC BEHAVIOR OF
DOUBLE-SKIN COMPOSITE WALL WITH REBAR TRUSSES
Li-Ping Zhang 1, 4, Yan-Sheng Huang 1, Chun Yang 1, *, Chi-Yu Luo 2, Xing-Long Luo 3, Bing-Qiang Sui 3 and Jian Cai 1
1 South China University of Technology, Guangzhou, 510641, China
2 Guang Dong Architectural Design and Research Institute Corporation Limted, Guangzhou, 510010, China
3 MCC Shanghai Steel Structure Technology Corporation Limted, Shanghai 201908, China
4 CCCC-FHDI Engineering Corporation Limted, Guangzhou 510000，China
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 22 February 2025; Revised: 16 July 2025; Accepted: 18 July 2025
DOI:10.18057/IJASC.2026.22.2.7
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ABSTRACT
This paper introduces a novel double-skin composite wall (DSCW) system reinforced with horizontal rebar trusses. The seismic performance of five double-skin composite wall specimens with rebar trusses and one specimen without rebar trusses was investigated under low cyclic lateral loading. The test results demonstrate that all specimens reached a flexure-dominated ultimate state, accompanied by local buckling of the faceplates in the shear wall and the boundary columns of the concrete-filled steel tube (CFST). The five specimens reinforced with rebar trusses exhibited excellent ductile behavior, with ductility coefficients ranging from 1.86 to 2.78. Comparative analysis among the specimens revealed that the inclusion of rebar trusses effectively stabilized the faceplates and improved the overall performance of the composite walls. Closer spacing of the rebar trusses, such as 100 mm, proved to be more effective. Specimens with vertical and horizontal rebar trusses demonstrated similar peak load capacities; however, the specimen with vertical rebar trusses achieved a 6.0% higher ductility coefficient, indicating improved deformation capacity. Furthermore, the use of a discontinuous inner steel plate in the CFST boundary column was found to reduce both lateral load-carrying capacity and ductility, rendering it an unsuitable design choice for this system.
KEYWORDS
Double-skin steel-concrete composite wall, Rebar trusses, Quasi-static test, Seismic performance
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