CN102518255A - Steel wire mesh bent and shaped reinforcement cross-shaped section concrete column and manufacturing method thereof - Google Patents

Abstract

The utility model relates to a bending-formed reinforced cross-section concrete column and a method thereof, which belong to the technical field of earthquake prevention and disaster reduction. The cross-section of the column is located at the cross-shaped corner of the vertical and horizontal walls; the column is composed of concrete 1, steel mesh sheet 2, concave keyway 3 and cross-shaped steel mesh sheet skeleton 4. During production, bend the steel wire mesh 2 into a cross-shaped steel wire mesh skeleton 4 according to the design size, support the formwork, pre-embedded connecting steel bars 3 or reserve end grooves 4, and pour concrete 1 to form a bent and formed steel mesh reinforcement Cross-section concrete columns. The steel wire mesh frame 4 is formed by bending lead wire mesh, which is simple in construction; the steel wire mesh frame has dense transverse steel wire spacing and good shear resistance, which can prevent brittle shear failure of special-shaped short columns; end grooves or The use of connecting steel bars to connect with lightweight ecological wall panels serves the purpose of strengthening the integrity of the house and improving the overall earthquake resistance and energy dissipation capacity. It is suitable for village and town houses and has a wide application prospect.

Description

Concrete column with cross-section reinforced by steel wire mesh and its method

technical field

The invention relates to a steel wire mesh sheet bending and forming type reinforced cross-section concrete column and its method, which belongs to a new type of steel wire mesh sheet bending forming type reinforced cross-section concrete column with low cost and suitable for village and town residences and practice.

Background technique

As an unpredictable and extremely destructive natural disaster, earthquakes have brought huge losses to people's lives and property. In recent years, my country is in a period of frequent earthquakes. In 2006 alone, there were 17 earthquake disasters. Among them, the Wenchuan earthquake caused economic losses as high as 645.1 billion yuan, and more than 100,000 casualties. At the same time, my country's earthquake areas are widely distributed, and the areas with fortification intensity of 6 degrees and above account for more than 60% of the country's land area, and most of them are located in economically underdeveloped villages and towns. Due to economic reasons, most houses in these areas adopt masonry load-bearing structures, and most houses do not adopt anti-seismic structural measures. This type of masonry buildings is a brittle structure with poor seismic performance, and it is easy to collapse when encountering a large earthquake. At present, domestic research on anti-seismic technology is mostly focused on high-rise, super high-rise and large-span structures, and there is less research on anti-seismic villages (towns). When previous earthquake disasters occurred, the most severe losses were often in the vast villages and towns. Wenchuan Earthquake And the Yushu earthquake illustrates this point.

The main building material of brick houses is clay bricks, the main source of which is cultivated land. There are only 1.6 billion mu of arable land in my country, and the per capita arable land area is lower than 1/3 of the world's average level. Moreover, due to the firing of clay bricks, the arable land is decreasing at a rate of several million mu per year. Therefore, my country urgently needs to carry out the innovation of wall materials, completely abolish clay bricks, and replace them with new structures and materials that are safe, environmentally friendly, and earthquake-resistant. Special-shaped column frame light wall structure hides the columns in the wall, effectively increases the building area, improves the use function of the building, and makes the interior of the residential structure beautiful and smooth; the enclosure structure adopts light walls to reduce the weight of the structure , the earthquake effect is small. Therefore, the special-shaped column frame light wall structure has become an important structural form to replace the brick-concrete structure, and it is currently an energy-saving residential structural form that is mainly promoted in my country.

The traditional light-weight wall structure with special-shaped column frame is mostly used in multi-storey and small high-rise residential structures. The technical scheme and construction method are relatively complicated, and the project cost is also high, so it is not suitable for use in the structural system of villages and towns. Therefore, it is of great economic and social value to study the economically reasonable and mass-acceptable special-shaped column frame light-weight wall structure system to solve the problems of poor integrity, weak earthquake resistance, and poor thermal insulation performance of rural houses.

Contents of the invention

The object of the present invention is to provide a concrete column with a cross-section and reinforced cross-section by bending and forming steel wire mesh sheets with the advantages of simple structure, low cost, convenient construction, and good earthquake resistance, and its method, in order to solve the problems of poor integrity and earthquake resistance of houses in villages and towns. Weakness, poor thermal insulation performance and other problems.

The present invention adopts following technical scheme:

The steel wire mesh sheet bending forming type reinforced cross-section concrete column is mainly composed of concrete 1, concave keyway 3 and cross-shaped steel wire mesh skeleton 4; the column section is cross-shaped, and the cross-shaped concrete column follows the cross-shaped A cross-shaped steel wire mesh frame 4 is embedded in the periphery of the concrete column, and the shape of the cross-shaped steel wire mesh frame 4 is a closed hollow cross; the four ends of the cross-shaped column limbs of the concrete column are formed by pouring concrete for matching with The concave keyway 3 connecting the light insulation wall; the cross-shaped steel wire mesh skeleton 4 is formed by bending the steel wire mesh 2 during prefabrication.

The steel wire mesh 2 is a square grid spliced by horizontal and vertical 8# lead wires or galvanized iron wires with a diameter of 4mm. The length of one side of the grid is greater than the particle size of the concrete coarse aggregate; the lead wires are welded Connect or tie connections.

The concrete 1 is ordinary concrete or recycled concrete; recycled concrete refers to concrete mixed with recycled coarse aggregate, or mixed with recycled fine aggregate, or mixed with recycled coarse aggregate and recycled fine aggregate; mixed with recycled coarse aggregate The ratio of aggregate and fine aggregate is 0%-100%. When the ratio of recycled aggregate is 100%, it is a fully recycled concrete column.

The concave keyway 3 is engaged and connected with the convex key of the light-weight thermal insulation wallboard or wall brick.

The cross-shaped steel mesh skeleton 4 is formed by bending a whole steel mesh 2, and is connected at the joints at both ends of the steel mesh 2.

The limb length of the concrete column: limb thickness=2～4;

The manufacturing method of the steel wire mesh sheet bending forming type reinforced cross-section concrete column is characterized in that:

It includes the following steps:

a Weld or bind the horizontal and vertical lead wires into steel wire mesh 2;

b bend the steel wire mesh 2 into a cross-shaped steel wire mesh skeleton 4, and weld or bind the joints of the steel wire mesh;

c. Pre-support the template into a concave shape at the end of the column limb to form a concave end groove 3;

d Pouring concrete 1 to form a steel wire mesh sheet bending and forming reinforced cross-section concrete column. When the cross-shaped column is prefabricated, a steel wire mesh sheet 2 with one end length is reserved at the four extremities of the column during pouring, so that it can be anchored with the foundation beam and the frame beam after being hoisted in place.

The present invention can obtain following beneficial effect:

The cross-section concrete column with steel wire mesh bending and forming reinforcement is located at the junction of vertical and horizontal walls, which increases the usable area of the building and makes the interior of the building beautiful and flat; It can prevent brittle shear failure of special-shaped short columns; the concrete in the column is surrounded by steel wire mesh to form constrained concrete, which improves the bearing capacity of the column; end grooves are reserved at the end of the column section or connecting steel bars are used to connect with lightweight ecological wall panels, It plays the purpose of strengthening the integrity of the house and improving the overall shock absorption and energy dissipation capacity.

Description of drawings

Figure 1 is a cross-sectional reinforcement diagram of a concrete column with a cross-section reinforced by bending and forming a steel wire mesh sheet;

Fig. 2 is a structural diagram of a square steel wire mesh sheet;

Fig. 3 is a three-dimensional view of a cross-shaped steel wire mesh skeleton;

Figure 4 is a perspective view of a steel wire mesh bending forming type reinforced cross-section concrete column; 1-concrete; 2-steel mesh; 3-end groove; 4-cross-shaped steel mesh skeleton

Detailed ways:

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

The steel wire mesh sheet bending forming type reinforced cross-section concrete column is mainly composed of concrete 1, concave keyway 3 and cross-shaped steel wire mesh skeleton 4; the column section is cross-shaped, and the cross-shaped concrete column follows the cross-shaped A cross-shaped steel wire mesh frame 4 is embedded in the periphery of the concrete column, and the shape of the cross-shaped steel wire mesh frame 4 is a closed hollow cross; the four ends of the cross-shaped column limbs of the concrete column are formed by pouring concrete for matching with The concave keyway 3 connecting the light insulation wall; the cross-shaped steel wire mesh skeleton 4 is formed by bending the steel wire mesh 2 during prefabrication.

The steel wire mesh 2 is a square grid spliced by horizontal and vertical 8# lead wires or galvanized iron wires with a diameter of 4mm. The length of one side of the grid is greater than the particle size of the concrete coarse aggregate; the lead wires are welded Connect or tie connections.

The concrete 1 is ordinary concrete or recycled concrete; recycled concrete refers to concrete mixed with recycled coarse aggregate, or mixed with recycled fine aggregate, or mixed with recycled coarse aggregate and recycled fine aggregate; mixed with recycled coarse aggregate The ratio of aggregate and fine aggregate is 0%-100%. When the ratio of recycled aggregate is 100%, it is a fully recycled concrete column.

The concave keyway 3 is engaged and connected with the convex key of the light-weight thermal insulation wallboard or wall brick.

The cross-shaped steel mesh skeleton 4 is formed by bending a whole steel mesh 2, and is connected at the joints at both ends of the steel mesh 2.

The limb length of the concrete column: limb thickness=2～4;

The manufacturing method of the steel wire mesh sheet bending forming type reinforced cross-section concrete column is characterized in that:

It includes the following steps:

a Weld or bind the horizontal and vertical lead wires into steel wire mesh 2;

b bend the steel wire mesh 2 into a cross-shaped steel wire mesh skeleton 4, and weld or bind the joints of the steel wire mesh;

c. Pre-support the template into a concave shape at the end of the column limb to form a concave end groove 3;

d Pouring concrete 1 to form a steel wire mesh sheet bending and forming reinforced cross-section concrete column. When the cross-shaped column is prefabricated, a steel wire mesh sheet 2 with one end length is reserved at the four extremities of the column during pouring, so that it can be anchored with the foundation beam and the frame beam after being hoisted in place.

The above is a typical embodiment of the present invention, and the practice of the present invention is not limited thereto.

Claims (7)

1. steel fabric sheet is bent into pattern arrangement of reinforcement star section concrete column, mainly is made up of concrete (1), spill keyway (3) and cross steel fabric sheet skeleton (4); It is characterized in that: column section is a cross, in the cross concrete column, is embedded with cross steel fabric sheet skeleton (4) along cross concrete column edge, and cross steel fabric sheet skeleton (4) is shaped as the cross of closed hollow; Have in four ends of concrete column cross section column limb by the concreting moulding and be used for the spill keyway (3) that is connected with light insulating wall; Cross steel fabric sheet skeleton (4) is bent to form when prefabricated by steel fabric sheet (2).

2. steel fabric sheet according to claim 1 is bent into pattern arrangement of reinforcement star section concrete column; It is characterized in that: steel fabric sheet (2) is the grid-like grid that is spliced by the galvanized wire that level and vertical 8# galvanized wire or diameter are 4mm, and the monolateral length of grid is greater than the particle diameter of concrete coarse aggregate; Between the galvanized wire for being welded to connect or colligation connects.

3. be bent into pattern arrangement of reinforcement star section concrete column according to the said steel fabric sheet of claim 1, it is characterized in that: said concrete (1) is ordinary concrete or regeneration concrete; Regeneration concrete refers in concrete, be mixed with regenerated coarse aggregate, or is mixed with recycled fine aggregate, or is mixed with regenerated coarse aggregate and recycled fine aggregate simultaneously; The ratio that is mixed with regenerated coarse aggregate and fines is 0%-100%, when the regeneration aggregate ratio that is mixed with is 100%, is full regeneration concrete post.

4. be bent into pattern arrangement of reinforcement star section concrete column according to the said steel fabric sheet of claim 1, it is characterized in that: said spill keyway (3) is connected with the protruding key of insulating light wall slab or wall brick.

5. be bent into pattern arrangement of reinforcement star section concrete column according to the said steel fabric sheet of claim 1; It is characterized in that: said cross steel fabric sheet skeleton (4) is formed by one whole steel fabric sheet (2) bending, and interface connects at steel fabric sheet (2) two.

6. be bent into pattern arrangement of reinforcement star section concrete column according to the said steel fabric sheet of claim 1, it is characterized in that: the limb of said concrete column is long: limb is thick=and 2～4;

7. be bent into the preparation method of pattern arrangement of reinforcement star section concrete column according to the said any described steel fabric sheet of claim 1-6, it is characterized in that:

It comprises the steps:

(a) horizontal with vertical galvanized wire welding or colligation are become steel fabric sheet (2);

(b) steel fabric sheet (2) is bent into cross steel fabric sheet skeleton (4), welds or colligation in the joint of steel fabric sheet;

(c) in advance template is propped up concavity at the post outlimb, form spill end slot (3);

(d) concreting (1) forms steel fabric sheet and is bent into pattern arrangement of reinforcement star section concrete column.When cross section column when being prefabricated, reserve the steel fabric sheet (2) of an end length when building at four acras of post so that behind the hoisted in position with grade beam and Vierendeel girder anchoring.

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