CN-224213129-U - Long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on micro-groove encapsulation

Abstract

The application relates to the technical field of carbon fiber intelligent ribs, in particular to a long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on micro-groove encapsulation. The anchoring structure comprises a first anchoring part, a second anchoring part and an end cover. The first anchoring part is provided with a first fixing ring and a first grating packaging groove, the second anchoring part is provided with a second fixing ring and a second grating packaging groove, the first fixing ring and the second fixing ring are sleeved on the carbon fiber rib along the axial direction of the carbon fiber rib to be fixed, the first grating packaging groove and the second grating packaging groove are movably connected along the axial direction of the carbon fiber rib, the first grating packaging groove and the second grating packaging groove are assembled to form a fiber bragg grating accommodating cavity, the fiber bragg grating accommodating cavity is used for injecting an adhesive to perform fiber bragg grating packaging, and the end cover is detachably arranged on the top surface of the fiber bragg grating accommodating cavity. The anchoring structure can detachably encapsulate the grating sensor on the carbon fiber rib after the carbon fiber rib is produced, and the damaged grating sensor is replaced.

Inventors

• Fang Shuaiwei
• LIAO LING
• Lei Lizhen
• HU YINFENG
• TANG YUAN

Assignees

• 广西科技大学

Dates

Publication Date

20260508

Application Date

20250604

Claims (7)

1. 1. The long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on micro-groove encapsulation is characterized by comprising a first anchoring part (1), a second anchoring part (2) and an end cover (3); The first anchoring part (1) is provided with a first fixing ring (11) and a first grating packaging groove (12), and the second anchoring part (2) is provided with a second fixing ring (21) and a second grating packaging groove (22); The first fixing ring (11) and the second fixing ring (21) are sleeved on the carbon fiber ribs along the axial direction of the carbon fiber ribs for fixing; The first grating packaging groove (12) and the second grating packaging groove (22) are movably connected along the axial direction of the carbon fiber rib, the first grating packaging groove (12) and the second grating packaging groove (22) are assembled to form a fiber bragg grating containing cavity (4), the fiber bragg grating containing cavity (4) is used for injecting an adhesive to conduct fiber bragg grating packaging, and the end cover is detachably arranged on the top surface of the fiber bragg grating containing cavity (4).
2. 2. The long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on the micro-groove packaging according to claim 1, wherein the first fixing ring (11) and the second fixing ring (21) are respectively provided with a locking bolt through hole.
3. 3. The long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on micro-groove encapsulation according to claim 1, wherein the first grating encapsulation groove (12) is provided with a sliding groove (121), the second grating encapsulation groove (22) is provided with a sliding block (221), and the sliding groove (121) and the sliding block (221) are in sleeve fit.
4. 4. The micro-groove packaging-based long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure according to claim 1, wherein the end cover (3) is provided with a first side cover (31), a second side cover (32) and a top cover plate (33); The first side cover (31) and the second side cover (32) are provided with two end cover mounting buckles, and the first anchoring part (1) and the second anchoring part (2) are respectively provided with a first end cover mounting clamping groove (124) and a second end cover mounting clamping groove (224); Structural adaptations between the end cap mounting clip and the first end cap mounting clip slot (124), and between the end cap mounting clip and the second end cap mounting clip slot (224).
5. 5. The micro-groove packaging-based long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure according to claim 4, wherein the top cover is provided with an adhesive injection hole.
6. 6. The micro-groove packaging-based long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure according to claim 4, wherein the first side cover (31) and the second side cover (32) are respectively provided with fiber through holes.
7. 7. The long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on the micro-groove packaging according to claim 1 is characterized in that the first anchoring component (1) and the second anchoring component (2) are respectively provided with an end cover accommodating groove; The bottom surface of end cover holding tank is provided with the optic fibre holding tank.

Description

Long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on micro-groove encapsulation Technical Field The application relates to the technical field of carbon fiber intelligent ribs, in particular to a long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on micro-groove encapsulation. Background In the cable structure bridge, the conventional reinforced cable has the problems of corrosion and great self weight, and the carbon fiber cable gradually replaces the reinforced cable with the characteristics of light self weight and corrosion resistance. The fiber bragg grating sensor is implanted to manufacture the fiber bragg grating carbon fiber intelligent ribs during production of the carbon fiber inhaul cable, and the fiber bragg grating carbon fiber intelligent ribs can monitor stress distribution of the inhaul cable in real time, so that strain sensing rules and performance loss are analyzed. The grating in the fiber grating sensor generates strain under the stress action of the inhaul cable, and the fiber grating sensor senses the change of the strain to cause the change of the center wavelength, so that the stress distribution of the inhaul cable is output. The fiber grating sensor in the carbon fiber intelligent rib has various packaging technologies, the main current manufacturing method is to implant the fiber at one time in the production process of the carbon fiber rib, and integrally form the fiber grating sensor through the processes of pultrusion, winding and solidification, and the manufacturing method is difficult to replace when the fiber grating sensor is damaged. In order to conveniently replace a damaged fiber bragg grating sensor in the carbon fiber intelligent rib, the application provides a long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on micro-groove encapsulation. Disclosure of utility model In order to overcome the problems in the related art, the application provides a long-gauge fiber bragg grating carbon fiber intelligent rib anchoring structure based on micro-groove encapsulation, which comprises a first anchoring part, a second anchoring part and an end cover; the first anchoring part is provided with a first fixing ring and a first grating packaging groove, and the second anchoring part is provided with a second fixing ring and a second grating packaging groove; The first fixing ring and the second fixing ring are sleeved on the carbon fiber ribs along the axial direction of the carbon fiber ribs for fixing; The first grating packaging groove and the second grating packaging groove are movably connected along the axial direction of the carbon fiber rib, the first grating packaging groove and the second grating packaging groove are assembled to form a fiber bragg grating containing cavity, the fiber bragg grating containing cavity is used for injecting an adhesive to carry out fiber bragg grating packaging, and the end cover is detachably arranged on the top surface of the fiber bragg grating containing cavity. In one embodiment, the first and second fixing rings are provided with locking bolt through holes, respectively. In one embodiment, the first grating packaging groove is provided with a sliding groove, the second grating packaging groove is provided with a sliding block, and the sliding groove is matched with the sliding block sleeve. In one embodiment, the end cap is provided with a first side cap, a second side cap, and a top cover plate; The first side cover and the second side cover are provided with two end cover mounting buckles, and the first anchoring part and the second anchoring part are respectively provided with a first end cover mounting clamping groove and a second end cover mounting clamping groove; the end cover mounting buckle is matched with the first end cover mounting clamping groove in structure, and the end cover mounting buckle is matched with the second end cover mounting clamping groove in structure. In one embodiment, the top cover is provided with an adhesive injection hole. In one embodiment, the first side cover and the second side cover are respectively provided with an optical fiber through hole. In one embodiment, the first and second anchor members are each provided with an end cap receiving groove, and the bottom surface of the end cap receiving groove is provided with an optical fiber receiving groove. The application provides the following beneficial effects: In the present application, the optical fiber grating is attached to the first anchor member and the second anchor member after the adhesive is solidified. When the carbon fiber bar is strained, the first anchoring part and the second anchoring part are respectively pulled along two opposite directions of the axial direction, the two anchoring parts pull the solidified adhesive, the strain is transferred to the fiber grating in the adhesive, and the fiber grating acquires the chang