CN213448141U

CN213448141U - FRP membrane shell splicing and reinforcing structure

Info

Publication number: CN213448141U
Application number: CN202022057204.2U
Authority: CN
Inventors: 张敏; 魏洋; 路锦昌; 高青磊
Original assignee: Beijing Texida Technology Co ltd; Nanjing Kaibrai Engineering Technology Co ltd
Current assignee: Beijing Texida Technology Co ltd; Nanjing Kaibrai Engineering Technology Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-06-15
Anticipated expiration: 2030-09-18

Abstract

The utility model provides a FRP membrane shell concatenation reinforced structure is by a plurality of prefabricated FRP section of jurisdiction, the tube-shape FRP membrane shell that the H section bar at management piece edge and the concatenation of high-speed joint hasp are constituteed, and H section bar has two opposite direction's draw-in grooves, and the edge card of adjacent section of jurisdiction is gone into in the draw-in groove, and the ring form of ring form support end device is established to hoop in treating maintenance pile column bottom, packs grout material under water at FRP membrane shell and support end device. The utility model discloses utilize prefabricated modularization FPR section of jurisdiction to splice through H section bar and connection hasp fast and become reinforced structure under water, show the efficiency that has promoted the reinforcement construction.

Description

FRP membrane shell splicing and reinforcing structure

Technical Field

The utility model relates to a reinforced structure spare under water, concretely relates to FRP membrane shell assembly structure for pier reinforcement.

Background

The underwater structure of the bridge can be scoured and cavitated by river water during operation, freeze thawing and erosion in severe cold areas, ship collision, floating ice and earthquake attack, environmental load (such as biological attachment), working load and the like on a channel, and various damage defects increase with the increase of operation time and traffic volume. Under the condition that the upper structure can basically meet the use requirement, the damage and the defect of the bridge underwater bridge pier and the pile at different degrees can cause the reduction of the bearing capacity and the durability of the bridge, and the use safety is seriously threatened. Therefore, a high degree of attention should be paid to the reinforcement and repair of underwater structures.

In order to simplify the maintenance and reinforcement process of an underwater structure, reduce the underwater operation time, shorten the construction period, reduce the influence of underwater structure reinforcement on channel traffic and solve the problem of the trouble of wading piles, the inventor develops complete technical research and tests of underwater reinforcement, has filed an invention patent application with application number 2020106075331, namely an FRP membrane shell for reinforcing piers and pile foundations and an underwater structure reinforcement construction method, and continuously improves and upgrades the technical scheme in engineering practice.

Disclosure of Invention

The purpose of the invention is as follows: in order to further promote reinforced (rfd) efficiency of construction of pier under water, practice thrift the cost, the utility model provides a FRP membrane shell concatenation reinforced structure.

The technical scheme is as follows: for solving the technical problem, the utility model provides a FRP membrane shell concatenation reinforced structure, including a plurality of prefabricated FRP section of jurisdiction, the tube-shape FRP membrane shell is constituteed by the hookup structure concatenation to adjacent section of jurisdiction, hookup structure comprises H section of jurisdiction and hasp, H section of jurisdiction has two opposite direction's draw-in grooves, and the edge card of adjacent section of jurisdiction is gone into in the draw-in groove.

Specifically, H type strip includes vertical card strip and hoop clamp, vertical card strip is through the vertical piece of hookup tubular structure, hoop clamp hookup tubular structure's hoop piece. The H-shaped aluminum profile can be directly adopted, the longitudinal clamping strips with the height of the FRP pipe piece are cut, the FRP membrane shell is spliced to form a cylindrical perimeter, and the metal extension is utilized to roll/bend the FRP membrane shell to form an annular hoop.

Specifically, the structural resin is filled between the clamping groove and the edge of the duct piece, the bonding sealing performance is further improved by the aid of the adhesion and the elastic performance of the structural resin, and form and position tolerance is compensated.

Specifically, the FRP membrane shell is formed by splicing a plurality of semicircular prefabricated FRP pipe pieces, and a connecting structure is arranged at the edge of each FRP pipe piece; a pair of prefabricated FRP section of jurisdiction connects end to end through longitudinally arranged connection structure and constitutes annular reinforcement casing, and the bottom and the top of a plurality of annular reinforcement casings are connected through the connection structure of hoop arrangement and are extended.

Specifically, the longitudinal seams of adjacent annular reinforcement shells are staggered with respect to each other. The stability of whole barrel is improved with the mode of staggered joint concatenation.

Specifically, the membrane shell is arranged around an underwater bridge pier or a pile foundation, the positioning device is installed in the membrane shell along the radial direction, the stainless steel positioning hoop is preferably selected as the positioning device, and the U-shaped positioning hoop can be directly arranged on the pipe piece in a penetrating mode and is fixedly installed through nuts.

Specifically, the H-shaped strips are continuously arranged along the edge of the pipe piece, and the hasps are arranged at intervals along the edge of the pipe piece.

Specifically, the bottom of the pile to be maintained is hooped with a circular bottom supporting device, and underwater grouting material is filled between the FRP membrane shell and the bottom supporting device.

Specifically, the bottom supporting device is a circular ring formed by connecting a plurality of sections of bottom supporting arc plates, arc plate reinforcing ribs are longitudinally arranged on each section of bottom supporting arc plate, and the end parts of adjacent arc plates are connected end to end through bolts.

Has the advantages that: the utility model discloses use H section bar and hasp convenient and fast ground hookup section of jurisdiction, all parts all adopt the prefabricated mode that adopts the on-the-spot concatenation installation of module, have simplified the kind and the quantity of construction material, are favorable to the standardized mass production of prefab. The bottom supporting arc plate can be used for selectively reinforcing underwater structures with different elevations, the pertinence is strong according to local conditions, and the using amount of reinforcing materials is saved. When the reinforced FRP pipe is used, constructors are spliced section by section around piers above the water surface, hoisted and sunk and surround the piers under water, concrete/underwater grouting materials are poured into gaps, formed FRP pipes restrain and reinforce concrete, and the bearing capacity, the anti-seismic performance and the durability of structural members can be effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of an assembled FPR membrane shell in embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view of the junction of FIG. 1;

FIG. 3 is an enlarged partial view of the snap-fit portion of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a longitudinal section of an FRP membrane shell reinforced underwater structure;

FIG. 6 is a transverse section of an FRP membrane shell reinforced underwater structure;

FIG. 7 is a schematic view of the mounting of the backing arc plate;

FIG. 8 is a cross-sectional view of FIG. 7;

in the figure: FRP membrane shell 1, upper segment section of jurisdiction 1-1, lower segment section of jurisdiction 1-2, vertical card strip 2, hoop clamp 3, bolt 4, structural resin 5, connection hasp 6, positioner 7, grout material 8 under water, wait to maintain pile 9, hold in the palm end arc board 10, arc board strengthening rib 11.

Detailed Description

Examples

The FRP membrane shell of this embodiment is as shown in figure 1 and figure 2, is a cylindrical FRP membrane shell 1 which is formed by splicing a plurality of prefabricated FRP pipe pieces, a longitudinal clamping strip 2 at the edge of the pipe piece, a hoop 3 and a connecting buckle 6, wherein the FRP pipe piece is provided with a fiber cloth outer layer and a grid middle layer, and resin filled in the fiber cloth and the grid.

The edge of the FRP pipe piece is inserted into the longitudinal clamping strip 2 and locked by the connecting hasp 6 to form a pipe joint; the upper segment 1-1 and the lower segment 1-2 are inserted through the annular hoop 3 and locked by the connecting hasp 6 to form the outer cylinder. The longitudinal clamping strips 2 and the annular clamping hoop 3 are made of aluminum alloy H-shaped strips, and play roles in guiding and limiting, and structural resin 5 is filled between the slots of the H-shaped clamping strips and the edges of the segments to play a role in sealing.

As shown in fig. 3 and 4, the quick connection buckle 6 is a conventional clip buckle/self-locking buckle and is respectively mounted on the upper segment 1-1 and the lower segment 1-2 through bolts 4.

As shown in fig. 5 and fig. 6, the FRP membrane shell 1 is formed by splicing FRP segments around the outer limit of the pile column 9 to be maintained, four U-shaped bolts are arranged on the inner wall of the FRP membrane shell 1 in a penetrating manner to serve as positioning devices 7, the limit of the concrete filling thickness is formed, the positioning devices 7 are distributed on the circumference of the FRP membrane shell 1 at intervals of 90 degrees, the inner wall of the segment is fastened through nuts and is perpendicular to the axis of the pile column 9 to be maintained, and underwater grouting materials 8 are filled in the space.

As shown in fig. 7 and 8, a bottom arc plate 10 is hooped at the bottom of the area to be maintained of the pile 9 to be maintained, a ring can be assembled by multiple arc plates, an arc plate reinforcing rib 11 is longitudinally arranged on each arc plate, and the arc plate reinforcing ribs 11 at the end parts are mutually connected by bolts 4. The inner diameter of the circular ring is slightly larger than that of the pile column 9 to be maintained, a rubber layer is clamped between the circular ring and the pile column to form sealing, the outer diameter of the circular ring is larger than that of the membrane shell 1, the bottom of the FRP membrane shell 1 is directly butted on the bottom supporting arc plate 10, and the circular ring and the bottom supporting arc plate form restraint on the underwater grouting material 8.

The utility model discloses a reinforcement of underwater structure provides a brand-new structural style, thinking and method, can be above the surface of water, the operation of assembling is implemented below the surface of water, and the method and the way that specifically realize this technical scheme are many, and it is only exemplary preferred embodiment to describe above, can not understand as right the utility model discloses a restriction, ordinary skilled person in the art can change, modify, replace and the variation to above-mentioned embodiment under the condition that does not deviate from this principle and purpose.

Claims

1. The utility model provides a FRP membrane shell concatenation reinforced structure, includes a plurality of prefabricated FRP section of jurisdiction, the tube-shape FRP membrane shell is constituteed by the hookup structure concatenation to adjacent section of jurisdiction, its characterized in that: the connecting structure is composed of an H-shaped strip and a hasp, the H-shaped strip is provided with two clamping grooves in opposite directions, and the edges of adjacent pipe pieces are clamped into the clamping grooves.

2. The FRP membrane shell splicing and reinforcing structure of claim 1, wherein: the H-shaped strip comprises a longitudinal clamping strip and a circumferential hoop, the longitudinal clamping strip is connected with a longitudinal seam of the cylindrical structure through a connecting seam, and the circumferential hoop is connected with the circumferential seam of the cylindrical structure.

3. The FRP membrane shell splicing and reinforcing structure of claim 1, wherein: structural resin is filled between the clamping groove and the edge of the duct piece.

4. The FRP membrane shell splicing and reinforcing structure of claim 1, wherein: the FRP membrane shell is formed by splicing a plurality of semicircular prefabricated FRP pipe pieces, and a connecting structure is arranged at the edge of each FRP pipe piece; a pair of prefabricated FRP section of jurisdiction connects end to end through longitudinally arranged connection structure and constitutes annular reinforcement casing, and the bottom and the top of a plurality of annular reinforcement casings are connected through the connection structure of hoop arrangement and are extended.

5. The FRP membrane shell splicing and reinforcing structure of claim 4, wherein: the longitudinal seams of adjacent annular reinforcing shells are staggered.

6. The FRP membrane shell splicing and reinforcing structure of claim 1, wherein: the membrane shell is arranged around the underwater bridge pier or the pile foundation, and the positioning device is installed in the membrane shell along the radial direction.

7. The FRP membrane shell splicing and reinforcing structure of claim 6, wherein: the positioning device is a stainless steel positioning hoop.

8. The FRP membrane shell splicing and reinforcing structure of claim 1, wherein: the H-shaped strips are continuously arranged along the edge of the duct piece, and the hasps are arranged at intervals along the edge of the duct piece.

9. The FRP membrane shell splicing and reinforcing structure of claim 1, wherein: the bottom of the pile to be maintained is hooped with a circular bottom supporting device, and underwater grouting material is filled between the FRP membrane shell and the bottom supporting device.

10. The FRP membrane shell splicing and reinforcing structure of claim 9, wherein: the bottom supporting device is a circular ring formed by connecting a plurality of sections of bottom supporting arc plates, arc plate reinforcing ribs are longitudinally arranged on each section of bottom supporting arc plate, and the end parts of adjacent arc plates are connected end to end through bolts.