Pre-stress fibre restriction concrete member and construction method thereof

Abstract

The invention discloses a construction method for prestressed fiber restraining concrete members. In the process of manufacturing concrete members, fiber cloth is made into a cylinder at first, and then the concrete added with expansive agent is poured into the fiber cloth cylinder. The fiber cloth cylinder is propped to open by the extrusion force which is resulted from a concrete self-weight and vibration process, and the fiber cloth cylinder prevents the concrete from expanding in a reverse direction, which leads the fiber cloth cylinder to produce restraint stress to the concrete; in a concrete solidification process, the concrete continues expanding under the action of the expansive agent, which leads the fiber cloth produce restraint stress for a second time; in such a method, the prestressed fiber restraining concrete members are made. The creativity of the invention lies in that owing to adopting a structure of prestressed fiber restraining concrete members, the bearing capacity and ductility of concrete members are greatly raised; owing to adopting nonmetallic material as prestressed material, the structural cost is greatly reduced; besides, protective layers which are necessary for reinforced concrete members are saved and the problem of durability is solved once and for all.

Description

technical field [0001] The invention relates to a prestressed fiber-confined concrete component and a construction method, belonging to the technical field of concrete structures. Background technique [0002] Steel is widely used as a traditional structural material. However, with the continuous expansion of the construction market and the gradual shortage of resources, its price has risen rapidly, resulting in a substantial increase in structural costs. Therefore, new materials are needed to replace them. In the prior art, confined concrete has been widely used in practical engineering, and the strength, ductility and seismic performance of concrete can be effectively improved due to the effect of the constraint. High-strength fiber (such as carbon fiber, etc.) has high strength, but its elastic modulus is similar to that of steel. It is used as a restraining material. Since the lateral deformation of the component is small under normal circumstances, the material strengt...

AI Technical Summary

Problems solved by technology

High-strength fiber (such as carbon fiber, etc.) has high strength, but its elastic modulus is similar to that of steel. It is used as a restraining material. Since the lateral deformation of the component is small under normal circumstances, the material strength is basically not exerted, and its practical application effect is not ideal.

In addition, due to the requirement of durability, the reinforced concrete structure needs to have a thicker protective layer, which is unfavorable to the stress of the structure

Images