Abstract
This paper proposes a steel-wood composite beam with H-shaped steel beam webs glued to the wood. As a new type of composite beam, it combines the advantages of low energy consumption of wood, high permeability, and less pollution and the advantages of light weight and high strength of steel, high degree of assembly, short construction period, and less construction waste generated. Carrying out research is of great significance to improve the mechanical properties of steel-wood composite beams and promote the development of steel-wood composite structures. In this paper, three hot-rolled H-beam-larch composite beams and one pure steel beam were tested for bending capacity. The composite beams are divided into two different combinations of A and B types. The two sides of the web are connected with larch wood by structural glue to form a composite beam. The type B composite beam is a larch wood glued on both sides of the H-shaped steel web and penetrates the bolts at the same time. Through the three-point monotonic static grading loading of the composite beam, the deflection change, failure phenomenon, and form of the specimen during the experiment were observed. Under the circumstances, the ultimate bearing capacity of the test piece was changed to study the combined effect of larch and hot-rolled H-shaped steel. The results show that the overall performance of the H-shaped steel-larch composite beam is good. Bonding wooden boards on both sides of the steel beam web can improve the bearing capacity, and the form of the member is more reasonable and effective; increasing the cross-sectional size of the H-beam in the steel-wood composite beam can further improve the bearing capacity of the composite beam; adding bolt anchorage on the basis of the structural glue used in the composite beam can further improve the bearing capacity of the composite beam. The superposition principle is used to simplify the calculation of the ultimate bearing capacity of H-shaped steel-larch composite beams. Comparing the calculation results with the test results, the data are in good agreement, which can provide a design reference for the practical application of such composite beams.
Highlights
As a new structure, the steel-wood composite component can fully utilize the advantages of the two materials [1]
In view of the fact that there are few studies on the bearing performance of H-shaped steel-wood composite beams and the H-shaped steel beams are prone to the problems of poor ductility and instability caused by local buckling, this paper studies this problem and designs H-shaped steel-wood composite beams with glued glulam for webs
The bending performance of three H-steel-larch composite beams and one pure steel beam was tested. ey have different combinations, different wood thicknesses, and different H-section cross-sectional dimensions. e failure process and failure morphology of the hot-rolled H-beamlarch composite beam were analyzed, and the relationship between deflection, strain, and load applied by the specimen was obtained. e theoretical analysis of the bending performance of the H-shaped steel-wood composite beam is made, and the calculation formulas of section bending stiffness, midspan deflection, and bending bearing capacity are proposed
Summary
The steel-wood composite component can fully utilize the advantages of the two materials [1] In this project, composite beams made of larch wood glued to both sides of hot-rolled H-shaped steel webs were selected as the object to study their bending mechanical properties [2,3,4,5,6,7,8]. Tests have shown that high-strength steel cable nets can improve the bending capacity of wooden beams. Rough experiments and numerical methods, the bending and shear strength of lightweight composite wood I-beams are studied in order to use composite materials to strengthen I-beams and improve structural performance. E bending capacity test of steel-wood composite beams is carried out to study the combined effect of hot-rolled H-beam and modern wood. According to the test results, a simplified calculation formula of the bearing capacity of the steel-wood composite beam is proposed, which provided a theoretical basis for the practical application of the steel-wood composite beam
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
