1. Flexural performance of spliced composite slim beam with slotted web
- Author
-
Linqiang Zhou, Senwen Deng, Shan Gao, Wei Wang, and Qi Bai
- Subjects
Materials science ,Flexural strength ,Composite number ,medicine ,Stiffness ,Building and Construction ,Composite material ,medicine.symptom ,Beam (structure) ,Civil and Structural Engineering - Abstract
The flexural performance of a spliced composite slim beam with a slotted web (SCSB-SW) was assessed and prediction formulae of flexural capacity and initial stiffness for the beam were deduced. Through a four-point bending test, the flexural performance of the SCSB-SW was preliminary studied. The experimental results indicated that the section of the SCSB-SW conformed to the plane section assumption in the elastic stage. The beam failed in a ductile failure mode while there was no obvious relative slip between the steel beam and concrete slab in the failure stage. Finite-element models were developed and validated using the test results. A parametric analysis revealed that even if the cross-sectional dimensions and the position of the neutral axis in the beam are changed, the results predicted by the formulae still matched the numerical results well. The material strength, the thickness of the bottom flange of the steel beam and the concrete slab dimensions were found to play key roles in the flexural capacity of the beam, whereas the compressive strength grade of the concrete, the depth of the steel beam web and the dimensions of the concrete flange have significant effects on the initial stiffness of the beam.
- Published
- 2023