CN214271668U

CN214271668U - Anti-shearing device of prestressed carbon fiber plate anchor

Info

Publication number: CN214271668U
Application number: CN202023280066.0U
Authority: CN
Inventors: 李鹏举; 刘桂森; 景尤佳; 徐铜鑫; 贺冬冬; 崔鹏飞
Original assignee: Sinosteel Nanjing New Material Research Institute Co Ltd; Sinosteel Zhengzhou Research Institute of Steel Wire Products Co Ltd
Current assignee: Sinosteel Nanjing New Material Research Institute Co Ltd; Sinosteel Zhengzhou Research Institute of Steel Wire Products Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-24
Anticipated expiration: 2030-12-30

Abstract

The utility model provides an anti shearing mechanism of prestressing force carbon fiber plate ground tackle which characterized in that: the tension device comprises a carbon fiber plate, a fixed end clamp clamped at one end of the carbon fiber plate, and a tensioning end clamp clamped at the other end of the carbon fiber plate, wherein the fixed end clamp is combined with a fixed end steel plate through a hinge device; and the fixed end steel plate and the counter-force bracket are provided with tensioning anchorage fixing bolts.

Description

Anti-shearing device of prestressed carbon fiber plate anchor

Technical Field

The utility model relates to a bridge technical field, it relates to an anti-shearing mechanism of prestressing force carbon fiber plate ground tackle specifically to say so.

Background

The bridge in China has been developed rapidly in the past decades, and according to incomplete statistics, the newly-built bridge in China reaches more than 50 thousands seats only in 40 years of innovation and opening. The back of the rapid development of bridges undoubtedly also presents numerous challenges to the maintenance of existing bridges: in the face of bridges which do not meet traffic requirements or have diseases, the bridge bearing capacity is insufficient, bridge members are damaged, if the bridges are completely dismantled and rebuilt, huge waste of resources is undoubtedly caused, the bridge is also a challenge to national and local financial practice, and traffic inconvenience is caused during construction. In view of this, reinforcing and expanding bridge structures are produced at the same time, and the common methods for reinforcing bridge structures today include: steel plate reinforcement, cross section expansion reinforcement, carbon fiber cloth reinforcement, carbon fiber plate reinforcement, external prestressed tendon reinforcement and the like.

The prestressed carbon fiber plate has the advantages of high strength, convenience and quickness in construction and material saving, and is more and more widely applied to bridge reinforcement at present. The carbon fiber plate is arranged at the bottom of the bridge and is tensioned, so that the purpose of externally prestressing the steel bars is achieved, and the stress condition of the bridge is improved. The prestressed carbon fiber plate reinforced bridge firstly solves the problems of tensioning and anchoring of prestressed carbon fibers, and because the prestressed carbon fiber plate has extremely high longitudinal tensile strength but weak shear resistance, the prestressed carbon fiber plate reinforced bridge usually has damage at the joint of the prestressed carbon fiber plate reinforced bridge and an anchorage device.

Disclosure of Invention

The utility model discloses just can be better play the reinforcement purpose to bridge structures or component and provide an anti shearing mechanism of prestressing force carbon fiber plate ground tackle for bridge initiative reinforcement measure. The utility model discloses a respectively set up a hinge means in order to release carbon fiber plate stretch-draw process and later stage girder shearing force that shifts and arouse at carbon fiber plate anchor clamps (carbon fiber plate ground tackle) and stretch-draw end, stiff end. Through the device, the shearing force and the bending moment that the carbon fiber plate received can fully be released to improve the efficiency and the security of prestressing force carbon fiber plate reinforcing bridge.

The purpose of the utility model can be realized by the following technical measures:

the utility model discloses an anti shearing mechanism of prestressing force carbon fiber plate ground tackle includes the carbon fiber plate, the stiff end anchor clamps of centre gripping in carbon fiber plate one end, the stretch-draw end anchor clamps of centre gripping at the carbon fiber plate other end, the stiff end anchor clamps pass through articulated mounting (articulated mode) and combine together with the stiff end steel sheet, the stretch-draw end anchor clamps pass through articulated mounting (articulated mode) and combine together with the stretch-draw end steel sheet that is used for connecting stretch-draw lead screw, the centre gripping has counter-force support and stretch-draw end rear end steel sheet on the epitaxial section of stretch-draw lead screw, and stretch-draw jack and pressure sensor between counter-force support and stretch-draw end rear end steel sheet; and the fixed end steel plate and the counter-force bracket are provided with tensioning anchorage fixing bolts.

Furthermore, the fixed end clamp and the stretching end clamp have the same structure and are both formed by a carbon fiber plate clamp consisting of an upper clamping plate and a lower clamping plate, the carbon fiber plate is clamped between the upper clamping plate and the lower clamping plate through an inner hexagon bolt, the upper clamping plate and the lower clamping plate are both formed by an inner clamping plate and an outer clamping plate, and the inner clamping plate and the outer clamping plate are stacked together in a longitudinal and oblique surface matching mode.

The utility model has the advantages as follows:

hinge means has the effect of release bending moment and shearing force, and prestressing force carbon fiber plate can lead to the carbon fiber plate to receive the lateral shearing force because of various reasons in the tensioning process, and this kind of shearing force can aggravate the concentrated effort between carbon fiber plate and the ground tackle, leads to carbon fiber plate to cut the destruction. The hinge device is additionally arranged at the anchoring position of the carbon fiber plate and the anchorage device to release the shearing force generated in the tensioning process of the carbon fiber plate, so that the stress safety of the carbon fiber plate is ensured.

Drawings

Fig. 1 is a plan view of a shearing resisting device and anchoring of a prestressed carbon fiber plate anchor.

Fig. 2 is an elevation view of the anti-shearing device and the anchorage of the prestressed carbon fiber plate anchorage device.

FIG. 3 is a detail view of a prestressed carbon fiber plate anchor clip.

Fig. 4 is a sectional view of fig. 3.

Detailed Description

The invention will be further described with reference to the following examples (drawings):

as shown in figures 1 and 2, the utility model discloses a respectively set up a hinge assembly in order to release shearing force and moment of flexure between carbon fiber board and the anchor clamps at carbon fiber board anchor clamps and stretch-draw end, stiff end. Specifically speaking, the anti-shearing device of the prestressed carbon fiber plate anchorage device comprises a carbon fiber plate 4, a fixed end clamp 3 clamped at one end of the carbon fiber plate, and a tensioning end clamp 5 clamped at the other end of the carbon fiber plate, wherein the fixed end clamp 3 is combined with a fixed end steel plate 1 through a hinge device 2 (hinge mode), the tensioning end clamp 5 is combined with a tensioning end steel plate 6 used for connecting a tensioning lead screw 11 through the hinge device 2 (hinge mode), a counter-force support 7 and a tensioning end rear end steel plate 9 are clamped on an extension section of the tensioning lead screw 11, and a jack 8 and a pressure sensor are tensioned between the counter-force support 7 and the tensioning end rear end steel plate 9; and a tensioning anchor fixing bolt 14 is arranged on the fixed end steel plate 1 and the reaction bracket 7.

As shown in fig. 3 and 4, the fixed end clamp 3 and the stretching end clamp 5 have the same structure, and are both formed by a carbon fiber plate clamp 15 composed of an upper clamping plate and a lower clamping plate, and the carbon fiber plate 4 is clamped between the upper clamping plate and the lower clamping plate through a hexagon socket head cap screw 10, the upper clamping plate and the lower clamping plate are both composed of an inner clamping plate and an outer clamping plate, and the inner clamping plate and the outer clamping plate are stacked together in a longitudinal and oblique surface matching mode.

Claims

1. The utility model provides an anti shearing mechanism of prestressing force carbon fiber plate ground tackle which characterized in that: the tension device comprises a carbon fiber plate, a fixed end clamp clamped at one end of the carbon fiber plate, and a tensioning end clamp clamped at the other end of the carbon fiber plate, wherein the fixed end clamp is combined with a fixed end steel plate through a hinge device; and the fixed end steel plate and the counter-force bracket are provided with tensioning anchorage fixing bolts.

2. The prestressed carbon fiber plate anchor shear resisting device of claim 1, wherein: the fixed end clamp and the stretching end clamp are the same in structure and are formed by a carbon fiber plate clamp consisting of an upper clamping plate and a lower clamping plate, the carbon fiber plate is clamped between the upper clamping plate and the lower clamping plate through an inner hexagon bolt, the upper clamping plate and the lower clamping plate are formed by an inner clamping plate and an outer clamping plate, and the inner clamping plate and the outer clamping plate are stacked together in a longitudinal inclined plane matched mode.