Study on Mechanical Properties of Multi-Cavity Steel–Concrete Composite Floor

Authors :: Pengju Qin
Gaojie Li
Ma Xiaosong
Xukai Wang
Chunbao Li
Ran-Gang Yu
Source :: Applied Sciences, Volume 10, Issue 23, Applied Sciences, Vol 10, Iss 8444, p 8444 (2020)
Publication Year :: 2020
Publisher :: Multidisciplinary Digital Publishing Institute, 2020.
Abstract: This paper proposes a novel multi-cavity steel&ndash concrete composite floor. The mechanical properties of multi-cavity steel&ndash concrete composite floor were studied by static load test. Based on full-scale tests on 2500 &times 1000 &times 120 mm multi-cavity steel&ndash concrete composite floors, the bearing capacity and failure characteristics of the composite floor were analyzed. Compared with the existing prefabricated floor, the reliability of the test was verified by finite element simulation. The influence of steel plate material thickness, floor thickness, cavity size and span on the mechanical properties of composite floor was analyzed. The results showed that the composite floor had stronger bearing capacity and better ductility and integrity than the existing precast floor. The bearing capacity and stiffness of composite floor were positively correlated with the thickness of steel plate and floor, and negatively correlated with the cavity size and span.