A kind of strong and tough fiber reinforced concrete beam

Abstract

The invention discloses a strong and tough fiber concrete beam, which comprises a connecting piece and a fiber concrete pouring body. The four corners of the connecting piece are inserted with support rods. The connecting piece includes a rectangular installation frame, and the There is a first intubation tube, and the first intubation tube is hinged with the installation frame through a pin shaft. One side of the installation frame is welded with a limit plate, and the limit plate is provided with an arc-shaped limit hole. A pin is welded on the first intubation tube, and the pin passes through the limit hole and is slidably connected with it. The support rod is provided with a circular mounting hole, and a connecting rod is inserted into the mounting hole. The first frame, the second frame and the third frame are respectively connected between the connecting rods. The cross-section of the concrete beam is evenly arranged with connecting rods and frames from the inside to the outside, which has strong deformation resistance and load resistance. Fiber concrete is used as pouring material, which has high tensile strength and high ultimate elongation.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a strong and tough fiber concrete beam. Background technique [0002] In recent years, with the development of social economy, the urban agglomeration has expanded and larger, and more and more high-rise buildings have been built. Sudden traffic accidents and accidental explosion terrorist attacks may cause the building structure to bear strong dynamic loads during its service life. When ordinary reinforced concrete members are subjected to strong dynamic loads, local and overall deformation or damage will occur. Such as projectile impact, explosion impact, or vehicle impact may cause concrete structures to undergo penetration, collapse, penetration, and punching damage, and eventually lead to partial or overall collapse of the building structure. [0003] However, for the problems of insufficient bearing capacity and excessive deformation of ordinary concrete structural m...

AI Technical Summary

Problems solved by technology

Such as projectile impact, explosion impact or car impact may cause concrete structures to undergo penetration, collapse, penetration and punching damage, and eventually lead to partial or overall collapse of the building structure

[0003] However, for the problems of insufficient bearing capacity and excessive deformation of ordinary concrete structural members under dynamic loads, traditional methods generally only use higher-strength concrete, increase reinforcement ratios, or take corresponding structural measures, but are limited to ordinary concrete structural members. In reinforced concrete members, the coordination ability of concrete deformation is insufficient and the binding force between the steel skeleton and concrete is limited. Simply using high-strength concrete cannot fully improve the ability of members to resist dynamic loads.

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