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

Chunbao Li,Xiaosong Ma,Rangang Yu,Pengju Qin,Xukai Wang,Gaojie Li

doi:10.3390/app10238444

Chunbao Li, Xiaosong Ma + Show 4 more

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https://doi.org/10.3390/app10238444

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Abstract

This paper proposes a novel multi-cavity steel–concrete composite floor. The mechanical properties of multi-cavity steel–concrete composite floor were studied by static load test. Based on full-scale tests on 2500 × 1000 × 120 mm multi-cavity steel–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.

Highlights

IntroductionWith the continuous improvement of the degree of industrialization of housing construction, many prefabricated composite floor slabs suitable for construction industrialization have been explored
With the continuous improvement of the degree of industrialization of housing construction, many prefabricated composite floor slabs suitable for construction industrialization have been explored.At present, prefabricated composite floors include profiled steel plate concrete composite floor (Figure 1a), steel truss composite floor (Figure 1b), reinforced truss concrete composite floor (Figure 1c) and precast ribbed floor slab (Figure 1d)
The results showed that the composite floor had better bi-directional mechanical characteristics, and its bearing capacity was greatly improved compared with the ordinary floor

Summary

Introduction

With the continuous improvement of the degree of industrialization of housing construction, many prefabricated composite floor slabs suitable for construction industrialization have been explored. At present, prefabricated composite floors include profiled steel plate concrete composite floor (Figure 1a), steel truss composite floor (Figure 1b), reinforced truss concrete composite floor (Figure 1c) and precast ribbed floor slab (Figure 1d). All kinds of composite floors have certain advantages, under certain conditions, the applications of these composite floors are limited in different aspects due to cost and actual service performance [1,2,3,4].

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Conclusion