A steel pipe-ultra high performance concrete composite shear connection

Abstract

The invention discloses a steel pipe-super high performance concrete composite shearing force connecting piece. The steel pipe-super high performance concrete composite shearing force connecting piece is characterized in that a steel pipe (1) is covered with super high performance concrete (2), and is further characterized in that the self-tapping screw penetrates through a hole channel in the steel pipe (1), the thread end of a self-tapping screw (3) is fixed to a bamboo wood beam, and the nut end of the self-tapping screw (3) is supported at the top of the steel pipe (1). The steel pipe-super high performance concrete composite shearing force connecting piece has the advantages of being high in anti-shearing sliding rigidity, good in ductility, simple in mechanical performance adjustment, convenient to construct and the like.

Description

technical field [0001] The invention relates to a shear connector applied to bamboo wood-concrete composite beams (slabs), and belongs to the field of building structures in civil engineering. Background technique [0002] As an energy-saving and environmentally-friendly biomass green material, bamboo and wood have excellent qualities of green, ecology, environmental protection, and low carbon. It is of great significance to form a new structural system and reduce structural energy consumption. [0003] Bamboo and wood (including glued bamboo and glued wood) materials have outstanding strength-to-weight ratio, so the bamboo and wood components made of bamboo and wood have the advantages of small structural weight and good deformation performance. However, due to the low elastic modulus of bamboo and wood materials, pure bamboo and wood The bending stiffness of wooden beams is low, and the bearing capacity is often controlled by deformation rather than material strength, whi...

AI Technical Summary

Problems solved by technology

However, both types of connectors have performance deficiencies: for pin connectors, they have good ductility but low shear slip stiffness, resulting in low flexural stiffness of composite beams, large component deformation, and insufficient bearing capacity As for the groove connector, its shear slip resistance is high but its ductility is poor, the main reason is that the concrete deformation ability is very poor, once the concrete block in the groove cracks, the bearing capacity of the component decreases rapidly, and the performance of the component brittle failure

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