CN214302387U

CN214302387U - Steel pipe concrete bundle combined shear wall internally provided with composite pipe for restraining steel reinforced concrete column

Info

Publication number: CN214302387U
Application number: CN202022198935.9U
Authority: CN
Inventors: 陈光明; 周勇臣; 柳钦; 任凤鸣
Original assignee: South China University of Technology SCUT; Guangzhou University
Current assignee: South China University of Technology SCUT; Guangzhou University
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-09-28
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a built-in compound material pipe restraint steel reinforced concrete column's steel core concrete beam combination shear wall, place the fibre reinforced composite material pipe and the reinforcing bar of wall in, including steel core beam combination shear wall body. The utility model discloses a warp or the great position of atress at steel pipe concrete bundle composite shear wall, like the wall end, two wall limb intersections, one or more fiber reinforced composite pipe are arranged to department or many in a plurality of wall limb intersections positions, and at the intraductal shaped steel that arranges of fiber reinforced composite, utilize compound material confined concrete intensity, the bearing capacity and the ductility of composite wall are strengthened to the good characteristics of ductility, and utilize the shaped steel of arranging in the fiber reinforced composite pipe confined concrete post to further strengthen its bearing capacity, the ductility, bending resistance and axial stiffness. Because the stress-strain strengthening characteristics that the compound material confined concrete has, the utility model provides a combination wall still has the self-reset function when shaking greatly.

Description

Steel pipe concrete bundle combined shear wall internally provided with composite pipe for restraining steel reinforced concrete column

Technical Field

The utility model relates to a novel integrated configuration technical field, concretely relates to built-in compound tubular product restraint reinforcing bar concrete column's steel pipe concrete beam combination shear wall.

Background

The shear wall is a wall body which mainly bears horizontal load and vertical load (gravity) caused by wind load or earthquake action in a house or a structure, prevents the structure from being sheared and damaged, and is generally made of reinforced concrete. However, the common concrete shear wall has the disadvantages of poor earthquake resistance and poor ductility, and although the invention patent with the publication number of CN105507456A adds composite pipes, reinforcing steel bars and other measures inside the concrete wall body to enhance the earthquake resistance, the following disadvantages still exist: firstly, the external concrete wall is still easy to have large cracks and concrete crushing; secondly, the performance of the composite pipe and the concrete cannot be fully utilized; and thirdly, construction must be carried out in a cast-in-place mode, and the construction process is complex.

Disclosure of Invention

The utility model discloses not enough to above-mentioned ordinary concrete shear force wall, the concrete-filled steel tube bundle composite shear force wall of built-in compound tubular restraint reinforcing steel bar concrete column is provided, constitute the shear force wall through the steel-pipe bundle that sets up to be formed by the steel pipe, set up the fibre reinforced composite material pipe in the steel pipe, and all fill the concrete in the inside of steel pipe and fibre reinforced composite material pipe, thereby can form the steel pipe, the dual restraint of fibre reinforced composite material pipe to inside concrete, can make the reinforcing of inside concrete intensity, thereby restrain the crack development of inside concrete, at the intraductal reinforcing bar that puts of fibre reinforced composite material, reinforcing bar and fibre reinforced composite material pipe collaborative work, the concrete is in three-dimensional pressurized state, component bearing capacity and anti-seismic performance have further been improved.

The utility model provides a built-in compound tubular steel reinforced concrete column's steel pipe concrete bundle composite shear wall, include the composite shear wall body that constitutes by the steel-pipe bundle, the steel-pipe bundle includes a plurality of steel pipe, is located the steel pipe internal fixation of the tip department of composite shear wall body is provided with fibre reinforced composite pipe and is provided with the reinforcing bar in fibre reinforced composite pipe, works as when composite shear wall body has two at least wall limbs, is located the intraductal also fixed the being provided with of the steel of the cross section of wall limb fibre reinforced composite pipe with reinforcing bar, every intraductal and every of reinforcing bar all is filled with the concrete.

The number of the fiber reinforced composite material pipes in a single steel pipe is 1 or at least two, and the steel ribs are correspondingly arranged or at least two steel ribs are arranged at the same time.

The fiber reinforced composite material pipe can be replaced by any one of a hoop reinforcement, a spiral reinforcement, a discontinuous hoop composite material strip and a spiral composite material strip.

The steel pipe and the fiber reinforced composite material pipe are filled with concrete, wherein the concrete filled in the steel pipe and the fiber reinforced composite material pipe is any one of ordinary concrete, high-strength concrete, expanded concrete, fly ash concrete, lightweight aggregate concrete, recycled aggregate concrete, fiber concrete, self-compacting concrete, rubber concrete, ECC and UHPC.

The fiber reinforced composite material is any one of carbon fiber, glass fiber, aramid fiber and basalt fiber.

The cross-sectional shape of the fiber reinforced composite material pipe is one of circular, oval, rectangular, square and polygonal, the cross-sectional shape of the steel rib is one of I-shaped, cross-shaped, circular and oval, and the steel used by the steel rib is one of common strength steel, high strength steel, low yield point steel, alloy steel and stainless steel.

The inner diameter of the steel pipe positioned at the end part of the combined shear wall body is larger than the inner diameters of the steel pipes positioned at other positions. The steel pipe size of tip department increases, and is provided with the reinforcing bar in the steel pipe, can further strengthen the atress performance.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

(1) in the novel steel tube bundle combined shear wall provided by the utility model, the fiber reinforced composite material tube and the steel tube form double restraint, so that the performances such as the concrete strength in the novel steel tube bundle combined shear wall are enhanced, the crack development of the internal concrete is inhibited, and the limit bearing capacity and the ductility index of the combined shear wall can be improved; the steel ribs are arranged in the fiber reinforced composite material pipes, the steel ribs and the fiber reinforced composite material pipes work cooperatively, and concrete is in a three-dimensional compression state, so that the bearing capacity and the anti-seismic performance of the member are further improved; steel pipes, concrete, steel ribs and fiber reinforced composite pipes all exert their material properties and show their advantages: the fiber reinforced composite material pipe has the advantages of high tensile strength, constraint of the steel pipe on internal concrete and high compression resistance of the concrete. After the fiber reinforced composite material pipe is added to the steel pipe concrete, the section moment of inertia of the steel pipe concrete is obviously improved, so that the shearing resistance of the combined shear wall is also improved, and the improvement of the seismic performance of the whole shear wall is facilitated. In addition, this novel utility model through at the inside novel combined member that sets up fibre reinforced composite pipe and pour the concrete and form of steel pipe, between its steel pipe and the steel pipe welded connection can, have the advantage of operation in batches, the construction of assemblable, can reach the effect of practicing thrift the cost and improving the efficiency of construction. Compare with traditional concrete shear force wall, the utility model discloses have that bearing capacity is high, anti-seismic performance is good, the dead weight is light, the construction is fast, technical advantage such as easy maintenance.

(2) Through implementing the utility model discloses, arrange fibre reinforced composite pipe and reinforcing bar in the concrete filled steel tube bundle combination shear wall key position, aim at utilizing the high performance combined material to form effective restraint to the concrete, prevent that concrete filled steel tube combination shear wall from damaging at the local that the great position steel pipe local buckling of warping and concrete crushing lead to, and by the wall body bulk damage that the local damage leads to. The strength of the concrete can be obviously improved by using the fiber reinforced composite material pipe to restrain the concrete, the deformation capacity and the ductility of the concrete can be improved, and meanwhile, the restrained concrete has certain later-stage rigidity in the later stage of stress, so that the restrained concrete has certain self-resetting capacity under the action of an earthquake. The steel ribs are arranged in the fiber reinforced composite material pipe or the steel pipe, so that the steel ribs can be prevented from buckling in advance, steel materials can be fully utilized, and the bearing capacity, the axial direction and the lateral stiffness of the combined wall can be further improved.

(3) Implement the utility model discloses the time, only need with fibre reinforced composite pipe or have other compound material forms of restraint effect with appropriate mode temporary fixation in required position to place the reinforcing bar, then pour the concrete, simple process, not only construction convenience can save the operating expenses moreover. In addition, the fiber reinforced composite material pipe is configured in concrete, so that the problem of poor fireproof performance of the composite material can be well solved. Therefore, implement the utility model discloses can not only promote the atress performance (especially anti-seismic performance) of steel pipe concrete bundle combination shear wall, still can promote the high-efficient application of high performance combined material in civil engineering.

Drawings

In order to more clearly illustrate the technical solutions or embodiments of the present invention, the drawings used in describing the technical solutions or embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive faculty.

FIG. 1 is a schematic perspective view of a steel-reinforced concrete steel-pipe-bundle shear wall with a fiber-reinforced composite pipe at its end.

FIG. 2 is a schematic plan view of a steel-reinforced concrete steel pipe bundle shear wall with a fiber-reinforced composite pipe at the end portion.

Fig. 3 is a schematic plan view of a L-shaped steel tube bundle combined shear wall with a plurality of fiber reinforced composite tubes and steel ribs inside.

Fig. 4 is a schematic plan view of a T-shaped steel tube bundle combined shear wall with a plurality of fiber reinforced composite tubes and steel ribs inside.

Fig. 5 is a schematic plan view of a steel tube bundle-shaped combined shear wall with an enlarged end column having a fiber reinforced composite tube and a steel rib built therein.

Fig. 6 is a schematic plan view of a steel tube bundle-in-line shear wall with a plurality of fiber reinforced composite tubes and steel ribs in the end steel tube cavity.

FIG. 7 is a schematic plan view of a steel tube bundle shear wall with a plurality of steel tubes (n is greater than or equal to 2) at the ends, wherein the steel tubes are provided with fiber reinforced composite material tubes and steel ribs.

Fig. 8 is a schematic view of a possible cross-sectional shape of a fiber reinforced composite tube.

Fig. 9 is a schematic view of a possible cross-sectional shape of the built-in steel rib.

Fig. 10 is a schematic view of a fiber reinforced composite tube according to an embodiment.

FIG. 11 is a schematic view of a helical composite strip.

FIG. 12 is a schematic view of a strip of endless composite material.

Fig. 13 is a schematic view of a spiral composite rib.

Fig. 14 is a schematic view of a hoop-like composite rib.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments of the present application may be implemented in combination with each other without conflict.

The utility model provides a built-in compound material pipe restraint steel reinforced concrete column's steel pipe concrete beam combination shear wall includes the combination shear wall body that constitutes by the steel-pipe bundle, the steel-pipe bundle includes a plurality of

steel pipe

3, 3 internal fixation of steel pipe that are located the tip department of combination shear wall body are provided with fibre reinforced composite material pipe 1 and reinforcing bar 5, when there are two at least wall limbs at combination shear wall body, 3 internal fixation of steel pipe that are located the cross section of wall limb are provided with fibre reinforced composite material pipe 1 and reinforcing bar 5, all fill concrete 2 in every steel pipe 3 and every fibre reinforced composite material pipe 1. The concrete filled in the interlayer of the steel pipe and the fiber reinforced composite material pipe can be the same as or different from the concrete filled in the fiber reinforced composite material pipe according to the requirement.

In detail, the number of the fiber reinforced composite material pipes 1 in a single steel pipe 3 is 1 or at least two, while 1 or at least two steel ribs 5 are correspondingly provided.

In detail, the cross-sectional shape of the fiber reinforced composite material pipe 1 is any one of circular, elliptical, rectangular, square, and polygonal. The fiber reinforced composite material pipe can be one of a carbon fiber reinforced composite material pipe (CFRP pipe for short), a glass fiber reinforced composite material pipe (GFRP pipe for short), an aramid fiber reinforced composite material pipe (AFRP pipe for short) and a basalt fiber pipe (BFRP pipe for short). The fiber reinforced composite material pipe 1 can be replaced by any one of a circumferential composite material rib 12 (or a circumferential steel stirrup) and a discontinuous circumferential composite material strip 10 and a spiral composite material strip 9 of a spiral composite material rib 11 (or a spiral steel stirrup). The hoop reinforcement and the spiral reinforcement are made of composite materials or steel materials.

During implementation, a bolt head can be fixed on the steel pipe 3, one end of the bolt head is fixed on the inner wall of the steel pipe 3, a nut and a steel sheet are sleeved on the other end of the bolt head, the steel sheet is arranged close to the steel rib or other composite materials replacing the steel rib, and the steel sheet can be tightly pressed on the steel rib by screwing the nut, so that the steel rib can be temporarily fixed, and concrete can be poured in the subsequent process.

The concrete is any one of ordinary concrete, high-strength concrete, expanded concrete, fly ash concrete, lightweight aggregate concrete, recycled aggregate concrete, fiber concrete, self-compacting concrete, rubber concrete, ECC concrete and UHPC concrete.

The steel used by the steel ribs or the steel pipes is any one of ordinary strength steel, high-strength steel, low-yield-point steel, alloy steel and stainless steel.

In the combined shear wall body, the inner diameter of the steel pipe positioned at the end part is larger than the inner diameters of the steel pipes positioned at other positions.

For the purposes of understanding, the following detailed description is to be read in connection with the accompanying drawings.

Example 1

Referring to fig. 1 and 2, in the present embodiment, a plurality of steel pipes 3 are welded in sequence to form a steel pipe bundle combined shear wall arranged in a straight line, fiber reinforced composite pipes 1 are uniformly arranged in the steel pipes 3 at two end portions, and a steel rib 5 is arranged in each fiber reinforced composite pipe 1. The steel skeleton is I-shaped.

Example 2

Referring to fig. 3 and 4, the steel pipes 3 of the present embodiment are welded in sequence, and the steel pipe bundle is arranged in a special shape, such as an L-shaped arrangement or a T-shaped arrangement, i.e., has two wall limbs. Fiber reinforced composite material pipes 1 are arranged in the steel pipes 3 which are positioned at the two end parts of the steel pipe bundle and at the intersection of the two wall limbs, and a steel rib 5 is arranged in each fiber reinforced composite material pipe 1.

Example 3

Referring to fig. 5, the difference between this embodiment and embodiment 1 is that when the shear wall is subjected to a large load (such as a strong earthquake), in order to meet the stress requirement, the size of the steel tube 3 at the wall end of the shear wall, that is, the inner diameter of the steel tube, can be enlarged, the steel tube 3 at the wall end is defined as an end column, and the steel ribs 5 are disposed in the end column. The effect of further reinforcing the steel tube concrete bundle combined shear wall end column can be achieved, and therefore the stress performance of the shear wall is enhanced.

Example 4

Referring to fig. 6, the difference between this embodiment and embodiment 1 is that when the shear wall is subjected to a large load (strong earthquake action), in order to meet the stress requirement, a plurality of fiber reinforced composite material pipes 1 (the number n of pipes is greater than or equal to 2) and a plurality of steel ribs 5 are correspondingly arranged in a single steel pipe at the wall end.

Example 5

Referring to fig. 7, this embodiment is different from embodiment 1 in that when the load is large, in order to meet the requirement, a fiber reinforced composite pipe 1 and a steel rib 5 may be placed in a plurality of (N > ═ 2) steel pipe cavities.

Considering the requirements of practical application and construction, the cross-sectional shape of the fiber reinforced composite pipe 1 may be any one of circular, oval, polygonal, square and rectangular shapes in fig. 8, and the steel rib may be any one of i-shaped, cross-shaped, circular and oval shapes in fig. 9, that is, i-shaped steel rib or cross-shaped steel rib 6 or circular steel rib 7 or oval steel rib 8.

The utility model discloses a warp or the great position of atress at steel pipe concrete bundle composite shear wall, like the wall end, two wall limb intersections, one or more fiber reinforced composite material pipe is arranged to department or many in a plurality of wall limb intersections positions, and arrange the reinforcing bar in fiber reinforced composite material pipe, utilize compound material confined concrete intensity, the bearing capacity and the ductility of composite wall are strengthened to the good characteristics of ductility, and utilize the reinforcing bar of arranging in the fiber reinforced composite material pipe confined concrete post to further strengthen its bearing capacity, the ductility, bending resistance and axial rigidity. Because the stress-strain strengthening characteristics that the compound material confined concrete has, the utility model provides a combination wall still has the self-reset function when shaking greatly.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention is defined by the appended claims and equivalents thereof, rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the embodiments or claims should not be construed as limiting the claims so far.

Claims

1. Built-in compound tubular product restraint steel reinforced concrete column's steel pipe concrete bundle combination shear wall, its characterized in that: the combined shear wall comprises a combined shear wall body formed by a steel pipe bundle, wherein the steel pipe bundle comprises a plurality of steel pipes (3), the steel pipes (3) at the end parts of the combined shear wall body are internally and fixedly provided with fiber reinforced composite material pipes (1), steel ribs (5) are arranged in the fiber reinforced composite material pipes (1), when the combined shear wall body is provided with at least two wall limbs, the steel pipes (3) at the cross parts of the wall limbs are also fixedly provided with the fiber reinforced composite material pipes (1) and the steel ribs (5), and concrete (2) is filled in each steel pipe (3) and each fiber reinforced composite material pipe (1).

2. The steel tube concrete beam combined shear wall with the built-in composite tube for restraining the steel reinforced concrete column according to claim 1, is characterized in that: the number of the fiber reinforced composite material pipes (1) in a single steel pipe (3) is 1 or at least two, and simultaneously, 1 or at least two steel ribs (5) are correspondingly arranged.

3. The steel tube concrete beam combined shear wall with the built-in composite tube for restraining the steel reinforced concrete column according to claim 1, is characterized in that: the concrete filled in the fiber reinforced composite material pipe (1) and the steel pipe (3) is any one of ordinary concrete, high-strength concrete, expanded concrete, fly ash concrete, light aggregate concrete, recycled aggregate concrete, fiber concrete, self-compacting concrete, rubber concrete, ECC (error correction code) and UHPC (ultra high performance concrete).

4. The steel tube concrete beam combined shear wall with the built-in composite tube for restraining the steel reinforced concrete column according to claim 1, is characterized in that: the fiber reinforced composite material pipe (1) can be replaced by any one of a hoop reinforcement, a spiral reinforcement, a discontinuous hoop composite material strip and a spiral composite material strip.

5. The steel tube concrete beam combined shear wall with the built-in composite tube for restraining the steel reinforced concrete column according to claim 4, is characterized in that: the hoop reinforcement and the spiral reinforcement are made of composite materials or steel materials.

6. The steel tube concrete beam combined shear wall with the built-in composite tube for restraining the steel reinforced concrete column according to claim 1, is characterized in that: the fiber material used in the fiber reinforced composite material pipe (1) is any one of carbon fiber, glass fiber, aramid fiber and basalt fiber.

7. The steel tube concrete beam combined shear wall with the built-in composite tube for restraining the steel reinforced concrete column according to claim 1, is characterized in that: the cross-sectional shape of the fiber reinforced composite pipe (1) is any one of circular, elliptical and polygonal.

8. The steel tube concrete beam combined shear wall with the built-in composite tube for restraining the steel reinforced concrete column according to claim 1, is characterized in that: the section of the steel rib (5) is in any one of I shape, cross shape, round shape and oval shape.

9. The steel tube concrete beam combined shear wall for restraining the steel reinforced concrete column by the built-in composite pipe according to any one of claims 1 to 8, wherein: in the combined shear wall body, the inner diameter of the steel pipe (3) positioned at the end part is larger than the inner diameters of the steel pipes (3) positioned at other positions.