CN219491485U

CN219491485U - Seawater sea sand concrete square column of GFRP section bar skeleton

Info

Publication number: CN219491485U
Application number: CN202320590330.5U
Authority: CN
Inventors: 李楠; 张震; 高孟进; 张文硕; 刘帅杰
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-08-08
Anticipated expiration: 2033-03-23

Abstract

The utility model relates to a seawater sea sand concrete square column of a GFRP (glass fiber reinforced plastic) profile framework, which is suitable for coastal corrosion environments and the like and comprises seawater sea sand concrete, an L-shaped GFRP profile and an I-shaped GFRP profile framework, wherein the I-shaped GFRP profile framework consists of an I-shaped GFRP profile and rivets, the rivets are fixed on the flange of the I-shaped GFRP profile in a cementing connection mode, the shape centers of square areas defined by the I-shaped GFRP profile framework and four L-shaped GFRP profiles are overlapped and relatively fixed, and the seawater sea sand concrete square column of the GFRP profile framework consists of the L-shaped GFRP profile and the I-shaped GFRP profile framework which are fixed according to design and then poured with seawater sea sand concrete. The utility model effectively improves the vertical supporting capacity and corrosion resistance of the square column by using the GFRP material, prolongs the service life of the whole body, takes seawater and sea sand as raw materials, takes local materials, saves the construction cost and is beneficial to popularization of coastal engineering construction.

Description

Seawater sea sand concrete square column of GFRP section bar skeleton

Technical Field

The utility model relates to the technical field of ocean engineering structures, in particular to a sea water sea sand concrete square column of a GFRP profile framework.

Background

At present, the country is greatly pushing engineering construction in coastal areas, but the coastal environment has less fresh water river sand resources and is unfavorable for the engineering construction, so that sea water is adopted to replace fresh water and sea sand to replace river sand, the manufacture of sea water and sea sand concrete is necessary to be applied to the engineering construction, and the problem of shortage of raw materials can be effectively relieved.

The traditional building generally adopts a reinforced concrete structure, but the content of chloride ions in the seawater sea sand concrete is too much, the steel bars are easy to erode, and the adverse effects of reduced structural strength, shortened service life and the like can be caused. The use of non-metallic fiber reinforced composites (GFRP) is an effective approach to solve this problem.

In recent years, as the production technology of the GFRP material is mature, china is in the forefront in the world production country, the GFRP material is one of the emerging fiber reinforced composite materials, and has unique advantages such as easy quality assurance, low cost, light weight, high strength, corrosion resistance, strong limit deformation capability and good durability compared with other materials. The GFRP material is used for replacing steel, and is combined with the seawater sea sand concrete, so that the problem of lack of fresh water river sand resources in coastal areas can be relieved, and the problem of structural degradation caused by corrosion of the steel can be fundamentally solved. Therefore, the seawater sea sand concrete structure which can fully utilize local resources, has corrosion resistance and high strength is researched, and has important significance for engineering construction in coastal areas.

Therefore, it is necessary to provide a seawater sea sand concrete square column of GFRP profile framework.

Disclosure of Invention

In order to overcome the defect that fresh water river sand resources in coastal areas are lack and materials are easy to corrode in the prior art, the utility model provides the sea water sea sand concrete square column with the GFRP section bar framework. In order to achieve the technical purpose, the technical effect is achieved.

The utility model is realized by the following technical scheme:

the sea water sea sand concrete square column of GFRP section bar skeleton is characterized by comprising sea water sea sand concrete, L-shaped GFRP section bar and an I-shaped GFRP section bar skeleton, wherein the I-shaped GFRP section bar skeleton consists of an I-shaped GFRP section bar and rivets, the rivets are fixed on the flange of the I-shaped GFRP section bar in a cementing connection mode, the shape centers of square areas enclosed by the I-shaped GFRP section bar skeleton and four L-shaped GFRP section bars are overlapped and relatively fixed, and the sea water sea sand concrete square column of the GFRP section bar skeleton consists of L-shaped GFRP section bars and I-shaped GFRP section bar skeleton which are fixed according to design and then sea water sea sand concrete is poured.

Preferably, the strength grade of the seawater sea sand concrete is selected according to actual engineering.

Preferably, the L-shaped GFRP section bar is in an equilateral L shape, and the specification is +.30X3.

Preferably, the L-shaped GFRP sections are uniformly arranged at four corners of the column, and the limb surface is 4cm away from the surface of the column.

Preferably, the specification of the H-shaped GFRP section is 800 multiplied by 300 multiplied by 14 multiplied by 26.

Preferably, the rivets are spaced by 10cm, are vertically and uniformly distributed in the height direction of the flange central axis of the H-shaped GFRP section bar, and are symmetrical on two sides.

Preferably, the rivet is cylindrical, has a diameter of 1cm and a length of 3cm.

The beneficial effects of the utility model are as follows: (1) The GFRP section bar is used for replacing steel, so that the problems of weakening structural performance and reducing durability caused by steel degradation are avoided, the corrosion resistance of the structure is effectively improved, and the service life of the structure is prolonged. (2) The seawater and sea sand are taken as raw materials in local materials, so that the raw materials are easy to obtain, the consumption of fresh water river sand is saved, the engineering cost is reduced, and the coastal engineering construction is facilitated. (3) The rivet structure is designed, the bonding capacity of the H-shaped GFRP section bar framework and concrete is improved, the shock resistance, fatigue resistance and stability of the square column are improved, and compared with the concrete column with the same specification, the self weight of the structure is reduced, and the construction cost of the structure is reduced. (4) The L-shaped GFRP section bar is used, the square column centers are used as the centers, four corners are distributed, the compression of the square column axes is facilitated, the eccentricity is avoided, and the bearing capacity and the yield resistance of the square column are improved. And (5) the structure is simple, and pouring is easy.

Drawings

FIG. 1 is an exploded view of the structure of the present utility model

FIG. 2 is a structural elevation of the present utility model

FIG. 3 is a top view of the structure of the present utility model

Reference numerals

1. Sea water sea sand concrete, 2, L-shaped GFRP section bar, 3, I-shaped GFRP section bar skeleton, 31, I-shaped GFRP section bar, 32, rivet.

Detailed Description

The utility model is described in detail below with reference to the attached drawings:

the sea water sea sand concrete square column of GFRP section bar skeleton is characterized by comprising sea water sea sand concrete 1, L-shaped GFRP section bar 2 and I-shaped GFRP section bar skeleton 3, wherein the I-shaped GFRP section bar skeleton 3 consists of an I-shaped GFRP section bar 31 and rivets 32, the rivets 32 are fixed on the flange of the I-shaped GFRP section bar 31 in a cementing connection mode, the square areas enclosed by the I-shaped GFRP section bar skeleton 3 and four L-shaped GFRP section bars 2 are overlapped and relatively fixed, and the sea water sea sand concrete square column of the GFRP section bar skeleton consists of the L-shaped GFRP section bar 2 and the I-shaped GFRP section bar skeleton 3 which are fixed according to design and then the sea water sea sand concrete 1 is poured.

Preferably, the strength grade of the seawater sea sand concrete 1 is selected according to actual engineering.

Preferably, the L-shaped GFRP section bar 2 is in an equilateral L shape with the specification of < 30 multiplied by 3.

Preferably, the L-shaped GFRP section bars 2 are uniformly arranged at four corners of the column, and the limb surfaces are 4cm away from the surface of the column.

Preferably, the H-shaped GFRP section bar 31 is 800 multiplied by 300 multiplied by 14 multiplied by 26.

Preferably, the rivets 32 are spaced by 10cm, are vertically and uniformly distributed in the height direction of the central axis of the flange of the H-shaped GFRP section bar 31, and are symmetrical on two sides.

Preferably, the rivet 32 is cylindrical in shape, having a diameter of 1cm and a length of 3cm.

The manufacturing method comprises the following steps: 1. a square mold is prepared, and the length of the inner side of the cross section of the mold is the same as the length of the outer side of the cross section of the square column. 2. Four L-shaped GFRP sections are uniformly arranged at four corners of the column body, the limb surfaces are 4cm away from the surface of the column body, and the centroid position of the enclosed square area coincides with the center of the die. 3. The rivets are uniformly distributed at intervals of 10cm along the height direction of the flange center line of the H-shaped GFRP section by adopting a cementing connection mode. 4. The combined I-shaped GFRP profile framework is arranged at a specified position according to design requirements, so that the area surrounded by the L-shaped GFRP profile is ensured to coincide with the centers of the I-shaped GFRP profile framework and the square die and is vertical to the ground. 5. The cement, the sea water, the sea sand and the coarse aggregate are stirred to prepare the sea water sea sand concrete. 6. And (3) uniformly stirring the prepared seawater sea sand concrete, pouring the seawater sea sand concrete into a mould, lightly beating a template by using a wood hammer during pouring, floating up internal bubbles, filling external mortar, plastering and flattening the surface of the prepared seawater sea sand concrete during initial setting of the concrete after pouring, curing, and finishing the seawater sea sand concrete square column of the GFRP profile framework after waiting for the strength of the concrete to ensure that the surface layer and the edges and corners of the concrete are not damaged by removing the template.

It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.

Claims

1. The utility model provides a sea water sea sand concrete square column of GFRP section bar skeleton, its characterized in that includes sea water sea sand concrete (1), L shape GFRP section bar (2), I-shaped GFRP section bar skeleton (3) are constituteed by I-shaped GFRP section bar (31) and rivet (32), and rivet (32) are fixed in I-shaped GFRP section bar (31) edge of a wing through the cementing connection mode, square regional centroid coincidence and the relative fixation that I-shaped GFRP section bar skeleton (3) and four L shape GFRP section bar (2) enclose, sea water sea sand concrete square column of GFRP section bar skeleton is by L shape GFRP section bar (2), I-shaped GFRP section bar skeleton (3) pour sea water sea sand concrete (1) according to the fixed back of design and is constituteed.

2. The seawater sea sand concrete square column of a GFRP profile frame of claim 1 wherein the seawater sea sand concrete strength grade is selected based on actual engineering.

3. The seawater sea sand concrete square column with the GFRP section bar framework according to claim 1, wherein the L-shaped GFRP section bar (2) is in an equilateral L shape, and the specification is +.30x3.

4. The seawater sea sand concrete square column with the GFRP section bar framework according to claim 1, wherein the L-shaped GFRP section bars (2) are uniformly arranged at four corners of the column, and the limb surface is 4cm away from the surface of the column.

5. The seawater sea sand concrete square column with GFRP profile skeleton of claim 1 wherein the specification of the i-shaped GFRP profile (31) is 800 x 300 x 14 x 26H-type.

6. The seawater sea sand concrete square column with the GFRP section bar framework according to claim 1, wherein the rivets (32) are vertically and uniformly distributed at intervals of 10cm in the height direction of the flange central axis of the I-shaped GFRP section bar (31) and are symmetrical on two sides.

7. The seawater sea sand concrete square column of the GFRP profile frame of claim 1 wherein the rivet (32) is cylindrical with a diameter of 1cm and a length of 3cm.