Dual steel pipe-encased concrete anti-seismic column with built-in rubber mixture and construction method

Abstract

The invention discloses a dual steel pipe-encased concrete anti-seismic column with a built-in rubber mixture. The dual steel pipe-encased concrete anti-seismic column comprises round-in-round, square-in-square, round-in-square, square-in-round, rectangle-in-rectangle cross section forms, is composed of an outer steel pipe, an inner steel pipe, interlayer concrete and the rubber mixture; the inner and outer steel pipes are in fixed connection through welding or a bolt; and the interlayer concretely is disposed between the two steel pipes, the rubber mixture is packed in the inner steel pipe, and the interlayer concrete is self-compacting concrete. The rubber mixture is in the inner-layer steel pipe, has extremely good energy-consumption damping effect, is capable of effectively absorbing earthquake energy, and also is capable of effectively preventing fires. The dual steel pipe-encased concrete anti-seismic column with the built-in rubber mixture is relatively light in deadweight. The anti-seismic column is a main member of a framework structure of high-rise and wide-span buildings, and has the characteristics of high bearing capacity, light weight, good plasticity and toughness, good impact resistance and fatigue resistance, excellent earthquake-proof performance, good endurance and the like.

Description

technical field [0001] The invention relates to a concrete member, in particular to a steel pipe concrete column used in civil engineering, which is a double steel pipe concrete anti-seismic column built with a rubber compound and a construction method thereof. Background technique [0002] At present, the seismic resistance of buildings mainly depends on the stiffness of structural components. Under repeated loads such as earthquakes, structural components can only rely on their own strength to absorb the energy of earthquakes. In this case, the deformation of large rigid components is very large. If it is small, it will inevitably generate excessive internal force. When some strong earthquakes come, the structural system is extremely prone to brittle failure, endangering the property safety and life safety of the people. In addition, in some super high-rise and long-span buildings, the size of components is often made large or structural systems such as shear walls a...

AI Technical Summary

Problems solved by technology

However, hollow interlayer concrete-filled steel tube columns mainly rely on their own strength to resist earthquakes. Under repeated loads, large stresses will be generated inside the components, and brittle failures are prone to occur.

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