Experimental and Numerical Study of Flexural Stiffness Performance of Ultra-Thin, Prefabricated, and Laminated Slab Base Slabs

Yihu Chen, Yiyan Chen, Dan Lu (), Min Zhang, Pengyuan Lu and Jingyi Chen
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Yihu Chen: Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin University of Technology, Guilin 541004, China
Yiyan Chen: Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin University of Technology, Guilin 541004, China
Dan Lu: East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China
Min Zhang: Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin University of Technology, Guilin 541004, China
Pengyuan Lu: Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin University of Technology, Guilin 541004, China
Jingyi Chen: College of Management Science and Engineering, Guangxi University of Finance and Economics, Nanning 530003, China

Sustainability, 2022, vol. 14, issue 20, 1-13

Abstract: To study the effects of different parameters on the short-term stiffness and cracking load of precast laminated base slabs, static loading experiments were conducted on five base slabs to obtain their damage patterns, stiffness changes, and deflection. The parametric research on the base slab’s short-term stiffness and cracking load was followed by changing the parameters, such as the truss height, truss spacing, and base slab thickness, using finite element refinement modeling based on test cases. The results show: (1) the ductility, short-term stiffness, and cracking load of the base slab can be significantly improved by reducing the truss spacing, and its short-term stiffness and cracking load with the 300 mm truss spacing are relatively improved by comparing to the 60 mm one; (2) increasing the height of truss improves the short-term stiffness, cracking load, and ductility of base slab; however, the improvements decrease with the increase of truss height. With consideration of the cost and construction requirements, the proper truss spacing is provided.

Keywords: laminated slab; rebar truss; short-term stiffness; finite element (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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