CN219471197U - Connecting node of precast concrete post - Google Patents

Abstract

The utility model relates to a connecting node of precast concrete columns, which comprises an upper precast column (1) and a lower precast column (2) which are connected with a structural beam (3), wherein column longitudinal ribs (4) and shear steel bars (5) penetrate through the upper precast column (1), the structural beam (3) and the lower precast column (2), and a grouting sleeve (6) and a threaded blind hole (7) are arranged at the bottom of the upper precast column (1); the top of the lower prefabricated column (2) extends out of a column longitudinal rib (4), penetrates through a beam column node and is inserted into a grouting sleeve (6), and the column longitudinal rib (4) is connected with the grouting sleeve (6) through grouting materials (8); the shear steel bars (5) extend out of the top of the lower prefabricated column (2), penetrate through beam column nodes and are inserted into threaded blind holes (7), and the shear steel bars (5) are connected with the threaded blind holes (7) through grouting materials (8). Compared with the prior art, the utility model is safe and reliable, simple and convenient in production and construction and wide in application range.

Description

Connecting node of precast concrete post

Technical Field

The utility model belongs to the technical field of assembly type buildings, and relates to a connecting node of a precast concrete column.

Background

In recent years, china popularizes the assembled building greatly, and the assembled technology develops rapidly. Compared with the traditional cast-in-situ frame structure, the cast-in-situ frame structure is beneficial to improving the engineering construction efficiency, saving resources, reducing energy consumption, reducing environmental pollution and improving the construction level and engineering quality by adopting an assembled integral frame structure system. The precast concrete column is an important vertical component for assembling the integral frame structure, and the shear bearing capacity of the horizontal joint of the precast column bottom under the earthquake working condition needs to be designed and calculated. When the column longitudinal ribs do not meet the shearing bearing capacity, the calculation requirements are often met by increasing or adding the column longitudinal ribs, the construction engineering cost and the beam column reinforcing steel bar arrangement difficulty are improved, and the construction convenience is poor.

Patent CN107165185a discloses an assembled concrete column foot node of an outer wrapping steel plate and a construction method thereof, the column foot node comprises a prefabricated reinforced concrete column and a reinforced concrete foundation, an outer wrapping steel plate cylinder which is prefabricated integrally with the concrete column and is enclosed outside the column foot is arranged, a gap is reserved between the bottom end of the outer wrapping steel plate cylinder and the upper surface of the foundation, a plugging material is filled outside the gap, the node also comprises annular rib plates, the periphery edges of which are horizontally and seamlessly connected with the inner wall of the outer wrapping steel plate cylinder, rib plate holes are arranged in the middle of the annular rib plates, sleeve holes which are adaptive to a grouting sleeve device are arranged in the annular rib plates, a closed joint cavity is formed by the edges of the steel plate cylinder, the annular rib plates, the plugging material and the upper surface of the foundation, and grouting materials are filled in the joint cavity. However, the horizontal annular rib plates of the patent weaken the bearing capacity of the precast reinforced concrete column and the bearing capacity of the horizontal joint, and meanwhile, the production cost of the precast member is greatly increased.

Patent CN113374180a discloses a grouting sleeve connection concrete reinforcing structure and construction method, comprising an upper structure and a lower structure, wherein the upper structure comprises an upper precast concrete wallboard, the lower structure comprises a lower precast concrete wallboard and a concrete floor slab between two wallboards, a column plate connecting node comprises an additional shear steel plate and at least two rows of horizontal shear members matched with the additional shear steel plate, the inner side of the additional shear steel plate is reinforced with the surface bonding steel of the upper precast concrete wallboard, the position of the concrete floor slab corresponding to the additional shear steel plate is provided with a vertical slot for inserting the vertical slot, and the horizontal shear members are pull members between the front side and the rear side of the additional shear steel plate. However, the additional shearing-resistant steel plate and the horizontal shearing-resistant member are exposed, so that potential safety hazards such as rust and the like exist, and the indoor effect of the building is affected.

Disclosure of Invention

The utility model aims to overcome at least one defect in the prior art and provide a connecting node of a precast concrete column, which has the advantages of simple structure, convenient production and construction, safety and reliability.

The aim of the utility model can be achieved by the following technical scheme:

according to one of the technical schemes, the connecting node of the precast concrete column is provided, the connecting node comprises an upper precast column and a lower precast column which are connected with a structural beam, column longitudinal ribs and shear steel bars penetrate through the upper precast column, the structural beam and the lower precast column, a grouting sleeve and a threaded blind hole are arranged at the bottom of the upper precast column, and the threaded blind hole is convenient and mature to manufacture and better in connection compared with a common blind hole.

Further, the top of the lower layer prefabricated column extends out of the column longitudinal rib, penetrates through the beam column node and is inserted into the grouting sleeve, and the column longitudinal rib is connected with the grouting sleeve through grouting materials.

Further, the grouting sleeve is sleeved with the lower end of the longitudinal rib of the upper column and the upper end of the longitudinal rib of the lower column.

As the preferable technical scheme, the quantity and the specification of the grouting sleeve and the column longitudinal ribs meet the requirement of column structure reinforcing bars.

Further, the shear steel bars extend out of the top of the lower prefabricated column, penetrate through beam column nodes and are inserted into the threaded blind holes, and the shear steel bars are connected with the threaded blind holes through grouting materials.

Further, the lower ends of the shear steel bars are anchored in the lower precast columns.

As the preferable technical scheme, the number and the specification of the threaded blind holes and the shear steel bars meet the shearing bearing capacity requirement of the horizontal joint of the prefabricated column bottom.

Further, the side wall of the upper prefabricated column is provided with a slurry inlet and a slurry outlet, and the grouting sleeve and the threaded blind holes are communicated with the slurry inlet and the slurry outlet.

As a preferable technical scheme, the connecting node is suitable for a communicating cavity grouting method, and other methods can be adopted when reliable experience exists.

Further, the junction of upper prefabricated post and structural beam be equipped with horizontal seam, this horizontal seam inside filling grouting material, both ends are equipped with shutoff waterproof material.

As the preferable technical scheme, the plugging waterproof material adopts sealant, a plugging mold or plugging mortar.

Further, the column longitudinal bars and the shear bar center are positioned on the same horizontal line.

Further, the threaded blind holes and the centers of the adjacent grouting sleeves on two sides are positioned on the same horizontal line.

Further, column stirrups are arranged on the outer sides of the column longitudinal bars and the shear bars.

As a preferred technical scheme, the column stirrup meets the requirements of related specifications and atlas.

Compared with the prior art, the utility model has the following advantages:

(1) When the column longitudinal ribs in the prior art do not meet the shearing bearing capacity of the horizontal joints of the prefabricated columns, the column longitudinal ribs and the grouting sleeve do not need to be increased or added, and shear steel bars and threaded blind holes with lower cost are adopted;

(2) The shear steel bars and the threaded blind holes adopt the same horizontal line arrangement principle, so that the arrangement of the steel bars in the core area of the beam column node is simplified, and the construction convenience is improved;

(3) The threaded blind hole and the grouting sleeve adopt the same grouting material and grouting method, are synchronously installed and constructed, and have strong applicability.

Drawings

FIG. 1 is a vertical cross-section of a connection node of a precast concrete column in an embodiment of the present utility model;

fig. 2 is a horizontal sectional view of a connection node of a precast concrete column in an embodiment of the present utility model.

The figure indicates:

1-upper prefabricated column, 2-lower prefabricated column, 3-structural beam, 4-column longitudinal rib, 5-shear rib, 6-grouting sleeve, 7-threaded blind hole, 8-grouting material, 9-plugging waterproof material and 10-column stirrup.

Detailed Description

The present utility model will be described in detail with reference to specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

the utility model provides a prefabricated concrete column's connected node, as shown in fig. 1 for compound prefabricated building outer wall, including upper prefabricated post 1, lower floor's prefabricated post 2, grout sleeve 6, screw thread blind hole 7, post indulge muscle 4, shear steel bar 5 and column hoop muscle 10. The number and the specification of the grouting sleeve 6 and the column longitudinal ribs 4 meet the column structure reinforcing bar requirement, the number and the specification of the threaded blind holes 7 and the shear steel bars 5 meet the shear bearing capacity requirement of the horizontal joint of the prefabricated column bottom, and the column hoop ribs 10 meet the requirements of related specifications and diagrams. Under the earthquake design condition, the shear bearing capacity A of the horizontal joint is not smaller than the shear design value B of the horizontal joint.

When the upper layer precast column 1 and the lower layer precast column 2 are connected with the structural beam 3, the top of the lower layer precast column 2 extends out of the column longitudinal rib 4, penetrates through a beam column node and is inserted into a grouting sleeve 6 at the bottom of the upper layer precast column 1; the shear steel bars 5 extend out of the top of the lower-layer prefabricated column 2, penetrate through beam column joints, are inserted into threaded blind holes 7 at the bottom of the upper-layer prefabricated column 1, and are filled with grouting material 8 through a communicating cavity grouting method to realize connection of column longitudinal bars 4 and grouting sleeves 6 and connection of the shear steel bars 5 and the threaded blind holes 7. The grouting sleeve 6 is sleeved on the lower end of the upper column longitudinal rib 4 and the upper end of the lower column longitudinal rib 4, and the lower end of the shear steel bar 5 is anchored in the lower precast column 2. The inside of the horizontal joint at the joint between the upper precast column 1 and the structural beam 3 is filled with grouting material 8, and both ends are plugged by plugging waterproof materials 9, and plugging mortar is adopted in the embodiment.

As shown in fig. 2, twelve column longitudinal ribs 4 are arranged along the outer ring of the column structure, four shear steel bars 5 are arranged on the inner side of the column longitudinal ribs 4, the column longitudinal ribs 4 and the shear steel bars 5 are positioned on the same horizontal line, and the centers of the threaded blind holes 7 and the adjacent grouting sleeves 6 on the two sides are positioned on the same horizontal line. The column stirrups 10 are arranged outside the column longitudinal bars 4 and the shear bars 5.

And after the lower precast column 2, the structural beam 3 and the beam column core area are concreted and reach the strength required by design, the reserved vertical ribs are inspected and fixed by adopting reinforcing steel bar positioning control hoops or other molds. The prefabricated column is temporarily fixed through the diagonal bracing after leveling and installation, and grouting is carried out by adopting special equipment with adjustable pressure and flow. The grouting of the communicating cavity is to adopt a point grouting, grouting is carried out from a grouting inlet below the grouting sleeve 6 by a grouting method, when grouting material 8 flows out smoothly from grouting inlets and grouting outlets of other grouting sleeves 6 and threaded blind holes 7, the grouting is blocked in time, and after the grouting is finished, the sealing is finished by blocking waterproof materials 9. The slurry inlet and the slurry outlet are arranged on the side wall of the upper prefabricated column 1.

The construction of the embodiment is simple, the stress is safe and reliable, the applicability is strong, the engineering material cost is saved, the beam column steel bar arrangement difficulty is reduced, and the construction convenience is improved.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.

Claims (10)

1. The utility model provides a connecting node of precast concrete post, its characterized in that, this connecting node include upper precast column (1) and lower floor precast column (2) of being connected with structure roof beam (3), upper precast column (1), structure roof beam (3) and lower floor precast column (2) inside wear post longitudinal reinforcement (4) and shear reinforcement (5), upper precast column (1) bottom be equipped with grout sleeve (6) and screw thread blind hole (7).

2. The precast concrete column connecting node according to claim 1, wherein the top of the lower precast column (2) extends out of the column longitudinal rib (4), passes through the beam column node and is inserted into the grouting sleeve (6), and the column longitudinal rib (4) is connected with the grouting sleeve (6) through grouting material (8).

3. A precast concrete column connecting node according to claim 2, wherein the grouting sleeve (6) is sleeved with the lower end of the upper column longitudinal rib (4) and the upper end of the lower column longitudinal rib (4).

4. The precast concrete column connecting node according to claim 1, wherein shear steel bars (5) extend from the top of the lower precast column (2), penetrate through the beam column node and are inserted into the threaded blind holes (7), and the shear steel bars (5) are connected with the threaded blind holes (7) through grouting materials (8).

5. A precast concrete column connection node according to claim 4, characterized in that the shear steel bars (5) are anchored at their lower ends in the lower precast column (2).

6. The precast concrete column connecting node according to claim 1, wherein the side wall of the upper precast column (1) is provided with a slurry inlet and a slurry outlet, and the grouting sleeve (6) and the threaded blind hole (7) are communicated with the slurry inlet and the slurry outlet.

7. The connection node of precast concrete columns according to claim 6, wherein the connection of the upper precast column (1) and the structural beam (3) is provided with a horizontal seam, grouting material (8) is filled in the horizontal seam, and both ends of the horizontal seam are provided with plugging waterproof materials (9).

8. A precast concrete column connection node according to claim 1, characterized in that the column longitudinal bars (4) are centered on the same horizontal line as the shear bars (5).

9. A precast concrete column connection node according to claim 8, characterized in that the threaded blind hole (7) is located on the same horizontal line as the centre of the grouting sleeve (6).

10. A precast concrete column connecting node according to claim 1, characterized in that the column longitudinal bars (4) and the shear bars (5) are provided with column stirrups (10) on the outside.