CN206352340U - Connecting node between precast concrete column and pedestal - Google Patents

Abstract

The utility model discloses a connection node between a prefabricated concrete column and a base, which comprises a prefabricated concrete column, a base, a metal connecting piece and a connecting anchor bar, wherein the metal connecting piece is arranged at the end of the prefabricated concrete column, and the connecting anchor The ribs are arranged on the base. The prefabricated concrete columns and metal connecting plates are prefabricated in the factory, which can realize the standardization and mass production of prefabricated components, reduce the workload on site, and improve the construction efficiency. Moreover, the splicing effect of the connecting nodes is good, and the mechanical performance of the components is good.

Description

Joints between precast concrete columns and foundations

technical field

The utility model relates to an assembled building component, in particular to a connection node of a prefabricated concrete column.

Background technique

With the rapid advancement of my country's construction industrialization, housing industrialization, and construction industry modernization, prefabricated concrete buildings have become a hot spot in the development of the industry in recent years. Prefabricating beams, columns, wall panels, floor slabs and other components in the factory, and assembling and connecting them on site can greatly reduce the workload on site, reduce pollution and energy consumption, and improve the green and industrialization level of the construction industry.

The connection nodes between prefabricated components are the key to ensure the integrity of the structure. Not only the efficiency of on-site splicing of prefabricated components must be considered, but also the good mechanical performance of the connection nodes of prefabricated components must be considered. However, the existing prefabricated components often have disadvantages such as complex splicing methods and unstable construction quality, which lead to low construction efficiency of prefabricated components, joints become weak points of force, and make buildings have greater safety hazards.

Utility model content

Aiming at the defects of low construction efficiency and unreasonable stress in the splicing of prefabricated components in the prior art, the utility model provides a connection node between the prefabricated concrete column and the base. The prefabricated concrete column is constructed after prefabricated in the factory The site can realize rapid splicing with the base, which reduces the workload of concrete pouring on site, speeds up the construction progress, shortens the construction period, and at the same time ensures the overall stability of the connection nodes and reasonable stress on the components.

In order to solve the above technical problems, the utility model includes the following technical solutions:

A connection node between a precast concrete column and a base, comprising a precast concrete column, a base, a metal connector arranged at the end of the precast concrete column, and a connecting anchor bar arranged on the base, the The metal connector includes a connecting plate arranged in the concrete at the end of the precast concrete column and an end bearing plate arranged at the end of the precast concrete column, one end of the connecting plate is vertically welded on the end bearing plate, Bolt holes matching the connecting anchor bars are arranged on the end bearing plate.

Further, a mounting groove is provided at the end of the precast concrete column corresponding to the bolt hole.

Further, it also includes post-casting concrete covering the installation groove, the end bearing plate and the connecting anchor bars.

Preferably, the sides of the post-cast concrete are flush with the sides of the base.

Preferably, the connecting plate is welded by a plurality of metal plates.

Preferably, the cross-sectional shape of the connecting plate is trident, cross, rice-shaped or I-shaped.

Preferably, protrusions, notches or holes are provided on the connecting plate.

Preferably, the prefabricated concrete column is provided with longitudinal bars and stirrups, and the metal connector is welded and fixed to the longitudinal bars.

Correspondingly, the utility model also provides a construction method for the connection node between the prefabricated concrete column and the base, including the following steps:

S1. Fix the position of the anchor bar, fix the base formwork, and pour the base concrete. After the base concrete reaches the formwork removal strength, remove the base formwork;

S2. Place the prefabricated concrete columns with metal connectors at the ends on the base, make the connecting anchor bars pass through the bolt holes, and fasten them with nuts;

S3. Set the post-cast concrete formwork, and carry out post-cast concrete construction, so that the post-cast concrete covers the installation groove, end bearing plate, and connecting anchor bars. After the post-cast concrete reaches the form removal strength, remove the post-cast concrete form.

Further, the prefabricated construction method of the prefabricated concrete column includes the following steps:

S11. Binding the longitudinal bars and stirrups of the precast concrete column to form the steel skeleton of the precast concrete column;

S12. Place the metal connectors so that they are fixedly connected to the longitudinal reinforcement, and cover the bolt holes on the end bearing plate with fillers;

S13. setting the formwork of the precast concrete column, and pouring the concrete of the precast concrete column;

S14. After the precast concrete column reaches the formwork removal strength, remove the formwork and remove the filler to form the installation groove.

Compared with the prior art, the utility model has the following advantages and positive effects due to the adoption of the above technical scheme:

(1) Prefabricated concrete columns and metal connecting plates are prefabricated in the factory, which can realize the standardization and batch production of prefabricated components, reduce the workload on site and improve the construction efficiency;

(2) On the construction site, it is only necessary to insert the bolt holes on the end bearing plate into the connecting anchor bars, and tighten them with nuts to realize the splicing of the precast concrete columns and the base. The construction is convenient, the splicing effect is good, and the mechanical performance of the components good;

(3) The post-cast concrete construction is carried out on the outside of the installation groove, end bearing plate and connecting anchor bars, which further enhances the overall stability of the components.

Description of drawings

Fig. 1 is the structural representation of the connection node between the prefabricated concrete column and the base provided by an embodiment of the utility model;

Fig. 2 is an exploded view of the connection node between the prefabricated concrete column and the base provided by an embodiment of the present invention;

Fig. 3 is a schematic structural view of a prefabricated concrete column and a metal connector provided by an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of post-cast concrete provided at the connection node between the precast concrete column and the base provided by an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of another prefabricated concrete column and a metal connector provided by an embodiment of the present invention;

Fig. 6 is a flowchart of a construction method for a connection node between a precast concrete column and a base provided by another embodiment of the present invention.

The numbers in the figure are as follows:

Connection node 100; prefabricated concrete column 110; base 120; working tank 121; metal connector 130; connecting plate 131; end bearing plate 132; bolt hole 133;

detailed description

The connection node between the prefabricated concrete column and the base provided by the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. In conjunction with the following description and claims, the advantages and features of the utility model will be more clearly. It should be noted that all the drawings are in very simplified form and use inaccurate scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiment of the present utility model.

Please refer to Fig. 1, Fig. 2 and Fig. 3, wherein Fig. 1 is a structural schematic diagram of the connection node between the prefabricated concrete column and the base provided by the present embodiment, Fig. 2 is an exploded view of the connection node, and Fig. 3 is wherein Structural schematic of precast concrete columns and metal connectors. The key points of the present utility model will be further described below in conjunction with Fig. 1 to Fig. 3 .

1 and 2, the connection node 100 includes a precast concrete column 110, a base 120, a metal connector 130 and a connecting anchor bar 140, wherein the metal connector 130 is arranged at the end of the precast concrete column 110 to connect the anchor bar 140 is disposed on the base 120 . Wherein, the metal connector 130 includes a connecting plate 131 arranged in the concrete at the end of the precast concrete column 110 and an end bearing plate 132 arranged at the end of the precast concrete column 110, one end of the connecting plate 131 is vertically welded on the end bearing plate 132, Bolt holes 133 corresponding to the positions of the connecting anchor ribs 140 are provided on the end bearing plate 132 .

3 shows a schematic structural view of the precast concrete column 110 and the metal connector 130 , one end of the connecting plate 131 is vertically welded to the end bearing plate 132 , and the connecting plate 131 is set in the concrete of the precast concrete column 110 .

This embodiment has the following beneficial effects: the prefabricated concrete column 110 and the metal connector 130 are prefabricated in the factory, and only the metal connector 130 is fixed on the connecting anchor bar 140 of the base 120 with nuts 141 at the construction site, and the prefabrication can be realized The splicing of the concrete column 110 and the base 120 reduces the workload of on-site concrete pouring, speeds up the construction progress, and shortens the construction period.

When the end bearing plate 132 is large, the bolt holes 133 are located around the precast concrete column 110 , and the precast concrete column 110 does not affect the fastening operation of the nut 141 . When the size of the end bearing plate 132 is close to the cross-sectional size of the precast concrete column 110, the bolt hole 133 is blocked by the precast concrete column 110. Preferably, a gap is provided at the end of the precast concrete column 110 corresponding to the bolt hole 133 to form a mounting groove 111 , so as to facilitate the tightening operation of the nut 141.

In order to make the connection node 100 not only have the advantages of rapid construction of prefabricated components, but also have the overall stability of cast-in-place components, preferably, as shown in FIG. The outside of the groove, the end bearing plate, and the anchor bars are post-cast concrete 150. For overall aesthetics, preferably, the side of the post-cast concrete 150 is flush with the side of the base 120 .

Wherein, the connection plate 131 is welded by a plurality of metal plates, as shown in Figure 2, the connection plate 131 is welded into a cross shape by a plurality of metal plates, of course, the cross-sectional shape of the connection plate 131 can be trident, cross , rice or I-shaped. FIG. 5 shows a schematic structural view of a connecting plate 131 with a trident cross-section. The end bearing plate 132 is a circular metal plate, and the connecting plate 131 is vertically welded on the end bearing plate 132 .

In order to increase the bonding force between the connecting plate 131 and the concrete of the prefabricated concrete column 110 , preferably, the connecting plate 131 is provided with protrusions, notches or holes for increasing the bonding force.

Usually, the precast concrete column 110 is a reinforced concrete structure with longitudinal bars and stirrups inside. In order to increase the structural stability of the precast concrete column 110 and the metal connector 130, the connecting plate 131 of the metal connector 130 is welded to the longitudinal bar. fixed.

Please refer to FIG. 6. FIG. 6 shows a flow chart of a construction method for a connection node between a prefabricated concrete column and a foundation. The construction method will be further described in conjunction with FIGS. 1 to 6 below. This construction method comprises the steps:

S1. Fix the position of the anchor bar 140 and fix the formwork of the base 120, pour concrete for the base 120, and remove the formwork of the base 120 after the concrete of the base 120 reaches the formwork removal strength. Wherein, the quantity and position of the connecting anchor bars 140 correspond to the bolt holes 133 on the end bearing plate 132 .

S2. Place the prefabricated concrete column 110 with the metal connector 130 at the end on the base 120, make the connecting anchor bars 140 pass through the bolt holes 133, and fasten them with nuts 141. The end of the prefabricated concrete column 110 is provided with a metal connector 130 , and the specific structure of the prefabricated concrete column 110 can be referred to as shown in FIG. 2 .

S3. Set the post-cast concrete 150 formwork, carry out the post-cast concrete 150 construction, make the post-cast concrete 150 cover the installation groove 111, the end bearing plate 122, and the connecting anchor bars 140, and remove the formwork after the post-cast concrete 150 reaches the formwork removal strength.

The construction method of the connection node 100 provided in this embodiment only needs to insert the bolt hole 133 on the end bearing plate 132 at the end of the precast concrete column 110 into the connection anchor bar 140 and fasten it with a nut 141 to realize the precast concrete The splicing of the column 110 and the base 120 is convenient for construction, the splicing effect is good, and the mechanical performance of the component is good; at the same time, the post-cast concrete construction is carried out on the outside of the installation groove 111, the end bearing plate 122, and the connecting anchor bar 140, which further strengthens the overall strength of the component. stability.

Further, the utility model also provides a prefabricated construction method of the prefabricated concrete column 110, which specifically includes the following steps:

S11. Binding the longitudinal bars and stirrups of the precast concrete column 110 to form the steel skeleton of the precast concrete column 110 .

S12. Lay the metal connector 130 so that it is fixedly connected with the longitudinal reinforcement, and cover the bolt holes 133 on the end bearing plate 132 with fillers. As an example, the metal connector 130 is fixed on the end of the steel bar skeleton, and the connecting plate 131 is welded on the longitudinal reinforcement; the volume of the filler corresponds to the size of the installation groove 111, and the position corresponds to the bolt hole 133. Vinyl foam board for easy clean up later.

S13. Set the template of the precast concrete column 110, and pour the concrete of the precast concrete column 110. The side formwork of the precast concrete column 110 is set, and the end bearing plate 132 can be used as the bottom formwork of the precast concrete column 110, reducing the construction of the bottom formwork.

S14. After the prefabricated concrete column 110 reaches the form removal strength, the formwork is removed, and the filler is removed to form the installation groove 111 .

The prefabricated construction method of the prefabricated concrete column 110 provided in this embodiment has the advantages of fewer construction procedures and good component integrity, and this construction method is also suitable for factory prefabricated construction.

The above description is only a description of the preferred embodiments of the present utility model, and is not any limitation to the scope of the present utility model. Any changes and modifications made by those of ordinary skill in the field of the utility model according to the above disclosures all belong to the protection scope of the claims .

Claims (8)

1. A connection node between a precast concrete column and a base, characterized in that it comprises a precast concrete column, a base, a metal connector arranged at the end of the precast concrete column and a metal connector arranged on the base To connect the anchor bar, the metal connector includes a connecting plate arranged in the concrete at the end of the precast concrete column and an end bearing plate arranged at the end of the precast concrete column, and one end of the connecting plate is vertically welded on the On the end bearing plate, the end bearing plate is provided with bolt holes matched with the connecting anchor bars. 2 . The connection node between the precast concrete column and the base according to claim 1 , wherein a mounting groove is provided at the end of the precast concrete column corresponding to the bolt hole. 3 . 3. The connection node between the prefabricated concrete column and the base according to claim 2, further comprising post-cast concrete covering the installation groove, the end bearing plate and the connecting anchor bars. 4. The connection node between the precast concrete column and the base according to claim 3, characterized in that, the side of the post-cast concrete is flush with the side of the base. 5. The connection node between the prefabricated concrete column and the base according to claim 1, wherein the connection plate is welded by a plurality of metal plates. 6. The connection node between the prefabricated concrete column and the base according to claim 5, characterized in that, the cross-sectional shape of the connection plate is a trident, a cross, a rice or an I-shape. 7. The connection node between the prefabricated concrete column and the base according to claim 5, wherein protrusions, notches or holes are provided on the connection plate. 8. The connection node between the precast concrete column and the base according to claim 1, characterized in that, the precast concrete column is provided with longitudinal bars and stirrups, and the metal connector is welded and fixed to the longitudinal bar.