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A New Reinforcement Method of Large Section Rectangular Reinforced Concrete Column

A technology of reinforced concrete columns and large cross-sections, applied in construction, building maintenance, building construction, etc., can solve the problems of chamfering and chamfering of reinforced rectangular columns, FRP breaking, etc., to achieve uniform distribution of restrained stress and eliminate stress concentration , the effect of eliminating the influence

Active Publication Date: 2019-03-01
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Abstract
  • Description
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a reinforcement method for a rectangular reinforced concrete column with a large cross-section, which is suitable for a rectangular column with a section length of more than 600mm, so as to solve the difficulty of chamfering the rectangular column of steel bars and the stress concentration caused by the chamfering. The problem that the FRP cloth is broken prematurely

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  • A New Reinforcement Method of Large Section Rectangular Reinforced Concrete Column
  • A New Reinforcement Method of Large Section Rectangular Reinforced Concrete Column

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Embodiment Construction

[0020] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0021] In the description of the present invention, unless otherwise stated, the meaning of "multilayer" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention. The terms "first", "second", "third", etc. are used for descrip...

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Abstract

The invention belongs to the field of civil engineering and particularly relates to novel reinforcing method of a large-section rectangular reinforced concrete column. Namely, a first fiber reinforced plastic (FRP) corner band is stuck at the four rotary corners of the rectangular reinforced concrete column section in the horizontal direction correspondingly firstly, interspaces between the adjacent first FRP corner bands in the horizontal direction are filled and leveled up with epoxy resin, and then an FRP side face band is stuck on the outer side of each first FRP corner band; the two adjacent first FRP corner bands on the same side face are covered with the corresponding FRP side face band, and interspaces between the FRP side face bands are filled and leveled up with epoxy resin in the horizontal direction; and finally, a second FRP corner band is stuck at the four rotary corners of the rectangular reinforced concrete column section in the horizontal direction correspondingly, and fibers in the first FRP corner bands and the second FRP corner bands are in the horizontal direction. According to the novel reinforcing method of the large-section rectangular reinforced concrete column, stress concentration of the ends of the rectangular pillar can be reduced, end FRP cloth is prevented from being damaged untimely, and the bearing capacity and deforming capacity of the rectangular pillar are greatly improved.

Description

technical field [0001] The invention belongs to the field of civil engineering, in particular to a method for reinforcing a novel large-section rectangular reinforced concrete column. Background technique [0002] Fiber Reinforced Plastics (FRP) is a new type of material formed by mixing fiber materials and matrix materials (resin) in a certain proportion. It has many excellent properties such as light weight, high strength, corrosion resistance, and fatigue resistance. It is widely used in civil engineering, not only for the reinforcement of existing structures, but also for new structures. The basic principle of FRP reinforcement technology is: when the reinforced concrete rectangular column is subjected to axial load, it will expand laterally, and the FRP fabric will generate tensile stress, which provides lateral constraints on the core concrete, making the concrete in a stress state of three-dimensional compression, thereby increasing the core strength. The compressive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/02
CPCE04G23/0218
Inventor 王作虎杨文雄崔宇强刘杜
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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