CN212427506U - Fabricated concrete column beam using post-pouring type connecting method - Google Patents

Abstract

The utility model discloses an use assembled concrete column beam of post-cast connection method and connection method thereof belongs to building technical field. Including precast concrete upper prop, precast concrete lower prop, precast concrete beam, connecting piece, the cylinder setting of precast concrete upper prop stretches out a plurality of reserved reinforcing bar B of cylinder, the cylinder bottom is the convex, and the bulge is square rib, precast concrete lower prop top sets up square notch, square notch both sides wall top sets up reinforcing bar passageway A, and a plurality of reserved reinforcing bar A are stretched out to square notch bottom surface, the reinforcing bar passageway B that link up about precast concrete beam one end sets up, the connecting piece sets up a plurality of steel sleeve and 2 square reinforcing bar circles. The connecting mode adopts post-pouring type connecting construction, the connecting piece is formed by welding a steel bar sleeve and a square steel bar ring, the connecting piece is simple, and the construction is simplified; the beam column node obviously improves the industrialization efficiency and can realize generalization and standardization.

Description

Fabricated concrete column beam using post-pouring type connecting method

Technical Field

The utility model relates to an use assembled concrete column beam of post-cast connection method and connection method thereof belongs to building technical field.

Background

The prefabricated concrete building is a building with a concrete structure designed and built in a field assembly mode, wherein the prefabricated concrete components are mainly produced in a factory. The assembly method of the component generally comprises a post-cast integral structure, a full-assembly structure connection and the like, and the steel bar connection can adopt methods of sleeve grouting connection, steel bar grout anchor lap joint connection and the like. In the 80 s of the 20 th century, the prefabricated large-plate house popular in China has many hidden dangers and defects influencing the safety and normal use of the structure due to poor structural integrity, leakage, floor slab cracks and the like, and is gradually replaced by a cast-in-place concrete structure. However, with the application of the currently emerging prefabricated concrete structure, especially with the introduction of a plurality of foreign advanced technologies in recent years, a new technology for constructing a native prefabricated concrete structure is gradually formed.

The design and construction technology of the fabricated concrete building is researched from the fifties and sixties of the 20 th century in China, a series of fabricated concrete building systems are formed, and typical building systems comprise a fabricated single-layer industrial factory building system, a fabricated multi-layer frame building system, a fabricated large-plate building system and the like. By the 20 th century and the 80 th century, the application of the fabricated concrete building reaches the full prosperity, and a design, manufacture, construction and installation integrated fabricated concrete industrialized building mode is formed in many places in the country. The fabricated concrete building and the masonry building adopting the prefabricated hollow floor slab become two main building systems, and the application popularization rate reaches more than 70%. Because the function and physical performance of the fabricated building have many limitations and defects, the level of the design and the development of the construction technology of the fabricated concrete building in China cannot keep up with the change of the social demand and the development of the construction technology, and the fabricated concrete building is gradually replaced by a full cast-in-place concrete building system by the middle of the 90 s of the 20 th century. At present, except that the application of an assembly type single-layer industrial factory building system is wider, the engineering application of other prefabricated assembly type building systems is very little. The seismic integrity of the prefabricated structure and the specialized research of design construction management are not enough, so that the poor technical integrity is the root cause of the long-term stagnation state of the prefabricated structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the field construction complicacy that current node exists, the relatively poor scheduling problem of wholeness provides a precast concrete beam column nodal connection method that the construction is simple, shear strength is high. The method has the advantages of reliable connection, good integrity, excellent shear resistance, obviously improved rigidity, obviously improved industrialization efficiency, and realization of generalization and standardization.

The technical scheme of the utility model as follows:

an assembled concrete column beam using a post-pouring type connecting method comprises a precast concrete upper column, a precast concrete lower column, a precast concrete beam and a connecting piece, wherein a plurality of reserved steel bars B extending out of the column body are arranged on the column body of the precast concrete upper column, the bottom of the column body is convex, a convex part is a square rib, a square notch is formed in the top end of the precast concrete lower column, steel bar channels A are formed in the tops of two side walls of the square notch, a plurality of reserved steel bars A extend out of the bottom surface of the square notch, a steel bar channel B which is through up and down is arranged at one end of the precast concrete beam, a plurality of reserved steel bars extend out of the steel bar channel B, and the connecting piece is provided with a plurality; the steel bar channel A and the sum of the quantity of the steel bar channel B are the same as the quantity of the reserved steel bars B and correspond to each other one by one, the quantity of the steel bar channel B is the same as the quantity of the reserved steel bars A and corresponds to each other one by one, the precast concrete beam is embedded into the square groove, the reserved steel bars A are inserted into the steel bar channel B, the reserved steel bars B are inserted into the steel bar channel A and the steel bar channel B, and the reserved steel bars on the two sides are fixedly connected in the steel bar sleeve in a grouting.

Furthermore, open grouting holes are formed in the top of the steel bar channel A towards the outside, and the grouting holes are used for injecting concrete into the steel bar channel A.

Further, the width of the square rib and the width of the square notch are consistent with the width of the precast concrete beam, the height of the square rib is 100-200mm, and the depth of the square notch is 600-700 mm.

Furthermore, a gap is formed between each square rib and each precast concrete beam, the gap is 50-100mm, and the square ribs and the square notches are filled with concrete.

Further, the lengths of the reserved steel bar B and the reserved steel bar A are both 500-600mm, the length of the reserved steel bar is 130-150mm, and the length of the steel bar channel A is 600-700 mm.

A post-pouring type connecting method for an assembled concrete column beam specifically comprises the following steps: inserting the reserved steel bars A in the square groove openings at the tops of the precast concrete lower columns into the steel bar channel B of the precast concrete beams on the left and right sides, connecting the reserved steel bars of the precast concrete beams through connectors, connecting the reserved steel bars through steel bar sleeves, grouting in the steel bar sleeves, and strengthening the shear strength of connecting nodes through square steel bar rings, wherein the precast concrete beams on the left and right sides are hoisted and lapped in the square groove openings of the precast concrete lower columns, inserting the reserved steel bars B into the steel bar channel A and the steel bar channel B, injecting concrete into the steel bar channel A through grouting holes, and injecting concrete into the steel bar channel B and the square groove opening inner spaces through gaps between square ribs and the precast concrete beams.

The utility model has the advantages as follows:

the utility model has the advantages that the connection mode adopts post-pouring connection construction, the connecting piece is formed by welding the reinforcing steel bar sleeve and the square reinforcing steel bar ring, the connecting piece is simple, and the construction is simplified; the square steel ring in the connecting piece enables the node to have excellent shearing resistance, and the rigidity is obviously improved; the beam column node obviously improves the industrialization efficiency and can realize generalization and standardization.

Drawings

FIG. 1 is a schematic diagram of a post-cast connection according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a precast concrete upper column;

FIG. 3 is a schematic structural view of a precast concrete lower column;

fig. 4 is a schematic structural view of a precast concrete beam;

fig. 5 is a schematic structural view of the connector.

In the figure: 1, prefabricating a concrete upper column; 1-1, column; 1-2, reserving a steel bar B; 2, prefabricating a concrete lower column; 2-1, square notches; 2-2, reserving a steel bar A; 2-3, a steel bar channel B; 2-4, grouting holes; 2-5, a gap; 3, prefabricating a concrete beam; 3-1, reserving reinforcing steel bars; 3-2, a steel bar channel B; 4, connecting pieces; 4-1, reinforcing steel bar sleeves; 4-2, square reinforcing steel bars.

Detailed Description

The materials, methods and apparatus used in the following examples, which are not specifically illustrated, are conventional in the art and are commercially available to those of ordinary skill in the art.

In the following description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and "upright" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the following description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection may be direct or indirect via an intermediate medium, or the connection may be internal to both components. To those of ordinary skill in the art, the specific meaning of the written terms in the present invention can be understood as a specific case.

In addition, in the following description of the present invention, the meaning of "a plurality", and "a plurality" is two or more unless otherwise specified.

The present invention will be described in further detail with reference to the accompanying drawings, but the following detailed description is not to be construed as limiting the present invention.

An assembly type concrete column beam using a post-pouring type connecting method comprises a precast concrete upper column 1, a precast concrete lower column 2, a precast concrete beam 3 and a connecting piece 4, a plurality of reserved steel bars B1-2 extending out of the column body 1-1 are arranged on the column body 1-1 of the precast concrete upper column 1, the bottom of the column body 1-1 is convex, the convex part is a square rib, the top end of the precast concrete lower column 2 is provided with a square notch 2-1, the top parts of two side walls of the square notch 2-1 are provided with a steel bar channel A2-3, the bottom surface of the square notch 2-1 extends out of a plurality of reserved steel bars A2-2, one end of the precast concrete beam 3 is provided with a steel bar channel B3-2 which is through up and down, a plurality of reserved steel bars 3-1 extend out, and the connecting piece 4 is provided with a plurality of steel bar sleeves 4-1 and 2 square steel bar rings 4-2; the sum of the number of the steel bar channels A2-3 and the number of the steel bar channels B3-2 is the same as the number of the reserved steel bars B1-2, the number of the steel bar channels B3-2 is the same as the number of the reserved steel bars A2-2, the reserved steel bars B3-2 are in one-to-one correspondence, the precast concrete beam 3 is embedded into the square notches 2-1, the reserved steel bars A2-2 are inserted into the steel bar channels B3-2, the reserved steel bars B1-2 are inserted into the steel bar channels A2-3 and the steel bar channels B3-2, and the reserved steel bars 3-1 on the two sides are fixedly connected in the steel bar sleeve.

Furthermore, an open grouting hole 2-4 is formed in the top of the steel bar channel A2-3 towards the outside, and is used for injecting concrete into the steel bar channel A2-3.

Further, the width of the square rib and the width of the square notch 2-1 are consistent with the width of the precast concrete beam 3, the height of the square rib is 100-200mm, and the depth of the square notch 2-1 is 600-700 mm.

Furthermore, gaps 2-5 are formed between the square ribs and the precast concrete beam 3, the gaps 2-5 are 50-100mm, and the square ribs and the square notches 2-1 are filled with concrete.

Further, the lengths of the reserved steel bar B1-2 and the reserved steel bar A2-2 are both 500-600mm, the length of the reserved steel bar 3-1 is 130-150mm, and the length of the steel bar channel A2-3 is 600-700 mm.

A post-pouring type connecting method for an assembled concrete column beam specifically comprises the following steps: inserting the steel bar channel B3-2 of the precast concrete beam 3 at the left and right sides into the reserved steel bar A2-2 in the square notch 2-1 at the top of the precast concrete lower column 2, connecting the reserved steel bar 3-1 of the precast concrete beam 3 through a connecting piece 4, welding the connecting piece (4) by 6 steel bar sleeves (4-1) and two square steel bar rings (4-2), connecting the reserved steel bar 3-1 through the steel bar sleeve 4-1, grouting in the steel bar sleeve 4-1, enhancing the shear strength of the connecting node through the square steel bar rings 4-2, hoisting and lapping the precast concrete beam 3 at the left and right sides in the square notch 2-1 of the precast concrete lower column 2, inserting the reserved steel bar B1-2 into the steel bar channel A2-3 and the steel bar channel B3-2, injecting concrete into the steel bar channel A2-3 through a grouting hole 2-4 phase, concrete is injected into the reinforcing bar passage B3-2 and the inner space of the square notch 2-1 through the gap 2-5 between the square rib and the precast concrete beam 3.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (5)

1. The utility model provides an use assembled concrete column roof beam of post-cast connection method, includes precast concrete upper prop (1), precast concrete lower prop (2), precast concrete roof beam (3), connecting piece (4), its characterized in that: the column body (1-1) of the precast concrete upper column (1) is provided with a plurality of reserved steel bars B (1-2) extending out of the column body (1-1), the bottom of the column body (1-1) is convex, the convex part is a square rib, the top end of the precast concrete lower column (2) is provided with a square notch (2-1), the tops of two side walls of the square notch (2-1) are provided with a steel bar channel A (2-3), the bottom surface of the square notch (2-1) extends out of a plurality of reserved steel bars A (2-2), one end of the precast concrete beam (3) is provided with a vertically through steel bar channel B (3-2), a plurality of reserved steel bars (3-1) are extended out, and the connecting piece (4) is provided with a plurality of steel bar sleeves (4-1) and 2 square steel bar rings (4-2); the number sum of the steel bar channels A (2-3) and the steel bar channels B (3-2) is equal to and corresponds to the number of the reserved steel bars B (1-2), the number of the steel bar channels B (3-2) is equal to and corresponds to the number of the reserved steel bars A (2-2), the precast concrete beams (3) are embedded into the square notches (2-1), the reserved steel bars A (2-2) are inserted into the steel bar channels B (3-2), the reserved steel bars B (1-2) are inserted into the steel bar channels A (2-3) and the steel bar channels B (3-2), and the reserved steel bars (3-1) on two sides are fixedly connected in the steel bar sleeves (4-1) in a grouting mode.

2. The fabricated concrete column girder using the post-cast connecting method according to claim 1, wherein: open grouting holes (2-4) are formed in the top of the steel bar channel A (2-3) towards the outside, and concrete is injected into the grouting holes in the steel bar channel A (2-3).

3. The fabricated concrete column girder using the post-cast connecting method according to claim 1, wherein: the width of the square rib and the width of the square notch (2-1) are consistent with the width of the precast concrete beam (3), the height of the square rib is 100-200mm, and the depth of the square notch (2-1) is 600-700 mm.

4. The fabricated concrete column girder using the post-cast connecting method according to claim 2, wherein: gaps (2-5) are arranged between the square ribs and the precast concrete beam (3), and the square ribs and the square notches (2-1) are filled with concrete.

5. The fabricated concrete column girder using the post-cast connecting method according to claim 1, wherein: the lengths of the reserved steel bar B (1-2) and the reserved steel bar A (2-2) are both 500-600mm, and the length of the reserved steel bar (3-1) is 130-150 mm.

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