Method for reinforcing K 'T-shaped nodes of circular tube structure space by using carbon fiber reinforced composite material

Abstract

The invention discloses a method for reinforcing a K 'T-shaped node of a circular tube structure space by using a carbon fiber reinforced composite material, and a node area is reinforced by adopting a mode of externally adhering carbon fiber cloth. According to the sequence, six links are included, namely the one-way carbon fiber cloth reinforcing K-shaped gap area, the two-way carbon fiber cloth reinforcing main pipe, the one-way carbon fiber cloth reinforcing branch pipe, the one-way carbon fiber cloth reinforcing connecting rod, the two-way carbon fiber cloth reinforcing main pipe and the end anchor. The joint has the advantages that the carbon fiber cloth deforms in cooperation with the pipe joint, a part of load is shared, the mechanical property of the joint is strengthened, and the rigidity, ductility, bearing capacity and other static performance and fatigue performance of the joint are improved.

Description

technical field

[0001] The invention relates to the field of structural engineering in civil engineering, in particular to a method for reinforcing a K'T-shaped node in a circular tube structural space with a carbon fiber reinforced composite material. Background technique

[0002] The steel pipe structure has a long history and is widely used. However, with the increase of the service life, the steel pipe structure will inevitably be corroded under the influence of the environment, resulting in a decrease in structural strength. In addition, with the progress of the society, the use of the structure is developing in a diversified direction. The original structure design is difficult to meet the current use requirements, and the existing structure needs to be redesigned. The joint area of ​​the steel pipe structure belongs to the key part of the structural design, and the research on the reinforcement of the joint area has important theoretical significance and practical val...

Examples

Embodiment Construction

[0081] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0082] figure 1 A structural schematic diagram of a K'T-type node in a circular tube structure space reinforced by a carbon fiber-reinforced composite material according to an embodiment of the present invention is shown. like figure 1 As shown, the present invention provides a kind of method that carbon fiber reinforced composite material strengthens circular tube structural space K'T type node, comprises the steps:

[0083] S1: Pre-preparation:

[0084] Locate the wire on the surface of the round tube to be reinforced, confirm the cutting size and details of the carbon fiber cloth, and cut the carbon fiber cloth according to the size measured on site; pay attention to the direction of the carbon fiber wire during the cutting process, and try to keep the carbon fiber bundles at the cutting edge and end coherent and complete;

[0085] S2: Surface t...

technical field

[0001] The invention relates to the field of structural engineering in civil engineering, in particular to a method for reinforcing a K'T-shaped node in a circular tube structural space with a carbon fiber reinforced composite material. Background technique

[0002] The steel pipe structure has a long history and is widely used. However, with the increase of the service life, the steel pipe structure will inevitably be corroded under the influence of the environment, resulting in a decrease in structural strength. In addition, with the progress of the society, the use of the structure is developing in a diversified direction. The original structure design is difficult to meet the current use requirements, and the existing structure needs to be redesigned. The joint area of ​​the steel pipe structure belongs to the key part of the structural design, and the research on the reinforcement of the joint area has important theoretical significance and practical val...

Examples

Embodiment Construction

[0081] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0082] figure 1 A structural schematic diagram of a K'T-type node in a circular tube structure space reinforced by a carbon fiber-reinforced composite material according to an embodiment of the present invention is shown. like figure 1 As shown, the present invention provides a kind of method that carbon fiber reinforced composite material strengthens circular tube structural space K'T type node, comprises the steps:

[0083] S1: Pre-preparation:

[0084] Locate the wire on the surface of the round tube to be reinforced, confirm the cutting size and details of the carbon fiber cloth, and cut the carbon fiber cloth according to the size measured on site; pay attention to the direction of the carbon fiber wire during the cutting process, and try to keep the carbon fiber bundles at the cutting edge and end coherent and complete;

[0085] S2: Surface t...

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