CN214169671U

CN214169671U - Self-monitoring reinforcement structure

Info

Publication number: CN214169671U
Application number: CN202022912342.4U
Authority: CN
Inventors: 鞠林群; 陈蓓; 姜海龙; 邰宏年; 李爱佳
Original assignee: Urban Construction 13 Engineering Co ltd
Current assignee: Urban Construction 13 Engineering Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-09-10
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses a self-monitoring muscle material structure, including FRP muscle (1), carbon fiber (2) and temperature-compensated piece (3), inside the FRP muscle was all located to carbon fiber and temperature-compensated piece, the carbon fiber was arranged along length direction in the FRP muscle, and measurement point (4) have been arranged to the carbon fiber equidistance on the carbon fiber, and measurement point and temperature-compensated piece are connected with electric lead (5) respectively with the adaptation, and electric lead one end is drawn forth from inside the FRP muscle, and inside resin filler layer (6) that still is equipped with of FRP muscle. The utility model discloses can carry out real-time measurement carbon fiber resistance inside the muscle material to carry out temperature compensation, measurement area is located inside the muscle material, has reduced the influence that is disturbed by external factor, has improved measurement accuracy greatly, thereby can accurately reflect the parameter variation of structure self, reaches the purpose that effective monitoring muscle material is met an emergency, can wide application in the health monitoring of all kinds of engineering structures.

Description

Self-monitoring reinforcement structure

Technical Field

The utility model relates to a technical field of engineering structure monitoring especially relates to a have from monitoring muscle material structure.

Background

Long-term static stress (strain) monitoring is an important method used to evaluate long-term performance of structures and damage identification. At present, in the practical application of monitoring the strain of the steel bar, the traditional monitoring means is to measure the resistance of the steel bar through the external part of the steel bar, but due to the defects of large interference influence, low measurement stability, strain gauge falling and the like caused by external factors (such as noise and environment), the measured resistance is inaccurate, data is lost, the parameter change of the structure can not be accurately reflected, and the purpose of effective monitoring is difficult to achieve.

Fiber composite materials (FRP) are composite materials formed by winding, molding or pultrusion of reinforcing Fiber materials, such as glass fibers, carbon fibers, aramid fibers and the like, and matrix materials. Common fiber composites are classified into glass fiber composites (GFRP), carbon fiber Composites (CFRP) and aramid fiber composites (AFRP) according to the fiber composites.

The fiber composite material has the characteristics that (1) the specific strength is high, and the specific modulus is large; (2) the material performance is designable; (3) the corrosion resistance and the durability are good; (4) the thermal expansion coefficient is similar to that of concrete. The characteristics enable the FRP material to meet the requirements of modern structures for heavy load, light weight, high strength and work development under severe conditions, and the FRP material is slightly interfered by external factors (such as noise and environment) and can also meet the requirements of modern building construction industrial development.

Therefore, the skilled person can use the FRP bar as a stress bar for replacing a steel bar in a concrete structure, thereby developing a self-monitoring bar structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the deficiencies existing in the above-mentioned prior art, provide a from monitoring muscle material structure.

In order to achieve the purpose of the utility model, the utility model provides a technical scheme as follows: the utility model provides a from monitoring muscle material structure, includes FRP muscle, carbon fiber silk and temperature-compensated piece all set up inside the FRP muscle, the carbon fiber silk is arranged along length direction in the FRP muscle, the last equidistance of carbon fiber silk has arranged the measuring point, measuring point and temperature-compensated piece are connected with the electric lead respectively with the adaptation, electric lead one end is drawn forth from the FRP muscle is inside, the inside resin filler layer that still is provided with of FRP muscle.

Further, the FRP ribs are carbon fiber ribs.

Furthermore, a fixing block for fixing the electric lead is arranged in the FRP rib.

Based on the technical scheme, compared with the prior art, the utility model have following technical advantage:

the utility model adopts the self-monitoring bar material structure, utilizes the FRP bar, the carbon fiber, the temperature compensation sheet and the electric lead, can measure the resistance of the carbon fiber in real time inside the bar material, and carries out temperature compensation, thereby reducing the influence of interference of external factors, having good measurement stability, greatly improving the measurement precision, accurately reflecting the parameter change of the structure, achieving the purpose of effectively monitoring the strain of the bar material, and being widely applied to the health monitoring of various civil engineering structures; the temperature compensation sheet is arranged in the FRP rib, so that temperature compensation can be performed, and the resistance of the carbon fiber wire is prevented from changing along with temperature change; the fixing block is used for fixing the electric lead to prevent the electric lead from displacing;

the FRP rib has the performance characteristics of high specific strength and large specific modulus, has good corrosion resistance and durability, and can be used under severe working conditions;

the carbon fiber wire is made of carbon fiber composite materials (CFRP), the carbon fiber composite materials are used as novel sensing materials, the novel sensing materials have the advantages of being high in strength, corrosion resistant, high in conductivity and the like, and compared with the traditional metal resistance strain type sensor, the novel sensing material has long-term stability, and compared with the metal sensing materials of the traditional resistance strain type sensor, the novel sensing material has the advantages of being high in sensitivity, good in adaptability and strong in durability.

Drawings

Fig. 1 is the cross-sectional schematic view of the self-monitoring rib structure of the present invention.

Fig. 2 is a schematic longitudinal section of the self-monitoring rib structure of the present invention.

In the figure: the device comprises FRP ribs, 2 carbon fiber yarns, 3 temperature compensation sheets, 4 measurement points, 5 electrical leads, 6 resin filler layers and 7 fixing blocks.

Detailed Description

The invention is further explained below with reference to the drawings and examples.

As shown in fig. 1-2, a self-monitoring reinforcement structure includes an FRP rib 1, a carbon fiber filament 2 and a temperature compensation sheet 3, the carbon fiber filament 2 and the temperature compensation sheet 3 are both disposed inside the FRP rib 1, the carbon fiber filament 2 is disposed in the FRP rib 1 along a length direction, measurement points 4 are equidistantly disposed on the carbon fiber filament 2, the measurement points 4 and the temperature compensation sheet 3 are respectively and adaptively connected with an electrical conductor 5, one end of the electrical conductor 5 is led out from inside of the FRP rib 1, and a resin filler layer 6 is further disposed inside the FRP rib 1.

And a fixing block 7 for fixing the electric lead 5 is also arranged in the FRP rib 1.

The FRP rib 1 can be a carbon fiber rib or a glass fiber rib. The fixing block 7 is provided with a plurality of limiting holes for the electric leads 5 to penetrate through.

The foregoing is illustrative and explanatory of the invention and is not intended to limit the advantages attainable thereby, and it is within the scope of the present application to practice the invention with simple modifications to the structure and/or one or more of the advantages achieved in some embodiments.

Claims

1. The utility model provides a self-monitoring muscle material structure which characterized in that: including FRP muscle (1), carbon fiber silk (2) and temperature-compensated piece (3) all set up inside FRP muscle (1), carbon fiber silk (2) are arranged along length direction in FRP muscle (1), equidistantly on carbon fiber silk (2) there are measurement point (4), measurement point (4) and temperature-compensated piece (3) are connected with electric lead (5) with the adaptation respectively, electric lead (5) one end is drawn forth from FRP muscle (1) is inside, inside resin filler layer (6) that still is provided with of FRP muscle (1).

2. The self-monitoring rebar structure of claim 1, wherein: the FRP ribs (1) are carbon fiber ribs.

3. The self-monitoring rebar structure of claim 1, wherein: and a fixing block (7) for fixing the electric lead (5) is also arranged in the FRP rib (1).