Embedded steel-encased high-intensity concrete combined beam with toggle pins

Abstract

The invention discloses an embedded steel-encased high-intensity concrete combined beam with toggle pins. High-intensity concrete is filled in a steel framework; the steel framework consists of reversed T-shaped steel straight strips, reversed L-shaped angle steel and connection steel lacing bars; a transverse plate consisting of the reversed T-shaped steel straight strips is arranged at the bottom of the steel framework; the toggle pins are arranged on a vertical plate consisting of the reversed T-shaped steel straight strips; the reversed L-shaped angle steel is respectively positioned above the reversed T-shaped steel straight strips and is connected through the transverse lacing bars; and the reversed T-shaped steel straight strips are connected with the reversed L-shaped angle steel through the vertical lacing bars. By the combined beam, a phenomenon that a crack is produced too early because of fragileness of concrete is avoided; the dynamic advantages of two materials, namely the concrete and the steel, are fully developed; by the toggle pins, effective adhesion between the toggle pins and the concrete is improved, and anti-shear bearing capacity is realized; use of templates during construction can be reduced; the working procedures of supporting the templates are reduced; the construction progress is improved; and mechanical construction is facilitated.

Description

technical field [0001] The invention relates to a high-strength concrete structure, in particular to a built-in high-strength concrete composite beam with studs and covered with steel. Background technique [0002] Outsourcing steel concrete structure technology is a newly developed building structure design and reinforcement technology, and it is a form of steel and concrete composite structure. The steel-concrete composite beam with external cladding is to partially or completely replace the steel bar or section steel inside the concrete with the external steel material (angle steel, steel plate, etc.) on the outer surface of the beam. Components, etc.) connection (generally welding) thus effectively constrains the internal concrete, thereby improving the load-bearing performance indicators of the beam and improving its mechanical performance. By configuring certain anchorage measures such as studs and internal stirrups, the bonding effect between the outsourcing steel an...

AI Technical Summary

Problems solved by technology

With the development of modern high-rise long-span structures, users have an increasing sense of demand for building space, and ordinary reinforced concrete (RC) beams or steel concrete (SRC) beams must not be used to meet the strength and stiffness requirements of structural components. Do not increase the reinforcement (steel) ratio of the section and increase the section size, resulting in excessive structural self-weight, increased earthquake action, and reduced component ductility

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