Vol. 20, No. 4, pp. 364-375 (2024)
MECHANICAL PROPERTIES OF ASSEMBLED WALL-SLAB JOINTS BETWEEN
THIN DOUBLE SKIN COMPOSITE SHEAR WALLS AND PRECAST FLOOR
SLABS SUBJECTED TO PURE BENDING
Jie Liu 1, 2, Zhi-Hua Chen 1, Ting Zhou 3, * and Xiao-Feng Wang 2, 4
1 School of Civil Engineering, Tianjin University, Tianjin, 300072, China
2 Central Research Institute of Building and Construction Co., Ltd, MCC Group, Beijing 100088, China
3 School of Architecture, Tianjin University, Tianjin, 300072, China
4 National Steel Structure Engineering Technology Research Center, Beijing 100088, China
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 27 October 2023; Revised: 30 August 2024; Accepted: 5 September 2024
DOI:10.18057/IJASC.2024.20.4.4
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ABSTRACT
Two new types of assembled wall-slab joints are proposed for thin double skin composite shear walls and steel truss floor slabs, which are commonly used in construction. Pure bending tests were performed to investigate the failure modes and mechanical performance of these newly devised wall-slab joints. The results demonstrated that the new assembled wall-slab joints offer superior flexural bearing capacity and ductility. When subjected to pure bending load, the steel truss floor slabs failed before the joints, adhering to the design principle of “strong joints and weak members”. Finite element models for the new assembled wall-slab joints were established and compared with test results. Furthermore, recognizing the prefabricated floor slab's failure section as the weakest, a new formula to calculate the bending capacity of these wall-slab joints was proposed, based on the principle of sectional force balance. Notably, these calculated results were more conservative than the test results.
KEYWORDS
Assembled wall-slab joints, Thin double skin composite shear wall, Pure bending test, Finite element model, Calculation method
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