CN112012349A

CN112012349A - double-T plate support connecting structure

Info

Publication number: CN112012349A
Application number: CN201910469013.6A
Authority: CN
Inventors: 王中原; 周益华; 李俊军; 季晓萌; 黄云胜; 刘明吉
Original assignee: Shanghai Pudong Architectural Design & Research Institute Co ltd
Current assignee: Shanghai Pudong Architectural Design & Research Institute Co ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-12-01

Abstract

The invention relates to a double-T plate support connecting structure which comprises a sliding plate, a fixed plate and a fixed bolt. A sliding plate: the upper surface of the sliding plate is welded with two ends of the bottom of the double T-shaped plate, and a sliding hole is formed in the sliding plate; fixing a plate: the lower surface of the fixing plate is connected with an anchoring steel bar at the upper end of the concrete beam, and a fixing hole is formed in the fixing plate; fixing the bolt: the sliding plate penetrates through the sliding hole and the fixing hole, so that the sliding plate and the fixing plate are tightly attached; the cross section area of the opening of the sliding hole is larger than that of the opening of the fixing hole. Compared with the prior art, the sliding hole on the sliding plate has a larger aperture relative to the fixed plate on the fixed plate, so that the sliding steel plate and the fixed steel plate can slide under the action of temperature stress, the temperature stress of the double T-shaped plate is eliminated, and the generation of structural cracks is avoided.

Description

double-T plate support connecting structure

Technical Field

The invention relates to a support structure, in particular to a double-T plate support connecting structure.

Background

The double-T plate is a beam-plate combined precast concrete member, is designed and formed by Americans in 1952, and is introduced and applied in 1958 in China. In 1978, a first industrial factory building of a double-T plate system was built. Then the double-T plate is widely applied in a plurality of provinces, and the double-slope double-T plate is developed. The double-T plate is widely applied in China due to a series of outstanding advantages of large span, light dead weight, good economic index, fire resistance, moisture resistance, fast construction progress and the like. Currently, the national standard drawing of double-T plates includes 09SG432-2 "double prestressed concrete T plates (flat plates, 2.0m, 2.4m, 3.0m)," 08SG432-3 "double prestressed concrete T plates (ramp plate, width 3.0m)," and 06SG432-1 "double prestressed concrete T plates (ramp plate, width 2.4 m)". The application range of the building roof is mainly the roof of a factory building, the floor is less in use and the load of the floor is generally smaller.

In recent years, with the promotion of building industrialization, most provinces and cities in China require that buildings with a certain scale or more are implemented according to assembly buildings, and the prefabrication rate or the assembly rate needs to reach a certain percentage. The application range of the double T-shaped plates is not limited to roofs of factory buildings, and the double T-shaped plates are gradually used for meeting the requirements of prefabrication rate for heavy-load floors such as three-dimensional public transport parking garages and public buildings.

However, for the structure of the double-T plate support connection, only two structures are provided according to the proposal of the drawing set, and the two structures are respectively welded connection or bolt connection. Both of these two connection methods have a drawback that both are fixedly connected and the temperature stress difference between the double-T plate and the main structure cannot be adjusted. The temperature stress of the double T-shaped plate is larger, and the structural crack control is unfavorable.

CN206873618U discloses two T board rib beam end step shape structure, including two T boards and the joist that is located two T board end outsides, the end bottom of two T boards is provided with the step, pre-buried on the step face has the steel backing plate, steel backing plate below welding support, the board is picked in the support connection, the outside end connection joist of picking the board. The structure can not deal with the situation that the stress difference is generated on the double T-shaped plate due to the temperature stress, and the structure crack is easy to generate.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing a dual T-shaped plate carrier connection structure.

The purpose of the invention can be realized by the following technical scheme:

a double-T plate support connecting structure comprises a sliding plate, a fixed plate and a fixed bolt.

A sliding plate: the upper surface of the sliding plate is welded with two ends of the bottom of the double T-shaped plate, and a sliding hole is formed in the sliding plate;

fixing a plate: the lower surface of the fixing plate is connected with an anchoring steel bar at the upper end of the concrete beam, and a fixing hole is formed in the fixing plate;

fixing the bolt: the sliding plate penetrates through the sliding hole and the fixing hole, so that the sliding plate and the fixing plate are tightly attached;

the cross section area of the opening of the sliding hole is larger than that of the opening of the fixing hole.

Furthermore, the sliding hole is a long circular hole, and the fixing hole is a circular hole.

Further, the length of the short axis of the sliding hole is equal to the length of the inner diameter of the fixing hole.

Furthermore, the sliding plate is a rectangular plate, and the sliding holes are provided with four positions which are respectively arranged at four corners on the sliding plate and are distributed in a central symmetry manner.

Furthermore, the fixed plate is a rectangular plate, and the fixed holes are provided with four positions which are respectively arranged at four corners on the fixed plate and are distributed in a central symmetry manner.

Further, the sliding hole coincides with the central axis of the fixing hole.

Further, the sliding plate and the fixed plate are both made of steel materials.

Furthermore, the welding point of the sliding plate and the bottom of the double T-shaped plate is positioned in the middle of the sliding plate and is positioned in the rectangular frame formed by the sliding holes.

Furthermore, the connecting points of the fixing plate and the anchoring steel bar are positioned inside or on the edge of the rectangular frame formed by the four fixing holes.

Compared with the prior art, the sliding hole on the sliding plate has a larger aperture relative to the fixed plate on the fixed plate, so that the sliding steel plate and the fixed steel plate can slide under the action of temperature stress, the temperature stress of the double T-shaped plate is eliminated, and the generation of structural cracks is avoided.

Drawings

FIG. 1 is a main sectional view of a double T-plate support connecting structure according to the present invention;

FIG. 2 is a schematic view of the structure of the sliding plate according to the present invention;

FIG. 3 is a schematic structural diagram of a fixing plate according to the present invention;

fig. 4 is a view showing a structure of a sliding aperture of a double T-plate holder coupling structure according to the present invention.

In the figure: 1. the sliding plate 2, the fixed plate 3, the fixed bolt 4, the anchoring steel bar 11, the sliding hole 21 and the fixed hole.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Examples

A double-T plate carrier connection structure comprising: a sliding plate 1, a fixed plate 2 and a fixed bolt 3.

The sliding plate 1 is partially: the upper surface of the sliding plate is welded with two ends of the bottom of the double-T plate, and a sliding hole 11 is formed in the sliding plate 1; the orifice sectional area of the slide hole 11 is larger than that of the fixed hole 21, see fig. 4. In specific implementation, the sliding hole 11 is an oblong hole, and the specific pattern of the oblong hole may be a rectangular hole or a square hole with semicircular extensions at two ends, as shown in fig. 2. The length of the short axis of the sliding hole 11 is equal to the length of the inner diameter of the fixed hole 21. The sliding plate 1 is a rectangular plate, and the sliding holes 11 are arranged at four positions, are respectively arranged at four corners of the sliding plate 1 and are distributed in a central symmetry manner. The welding point of the sliding plate 1 and the bottom of the double T-shaped plate is positioned in the middle of the sliding plate 1 and is positioned in a rectangular frame formed by four sliding holes 11. The sliding hole 11 coincides with the central axis of the fixing hole 21.

In a specific use process, the sliding hole 11 on the sliding plate 1 has a larger aperture relative to the fixed plate 2 on the fixed plate 2, see fig. 4, so that under the action of temperature stress, sliding can be generated between the sliding steel plate and the fixed steel plate, thereby eliminating the temperature stress of the double-T plate and avoiding the generation of structural cracks.

Fixing plate 2 part: the lower surface is connected with the anchoring reinforcing steel bar 4 at the upper end of the concrete beam, the fixing plate 2 is provided with a fixing hole 21, and the fixing hole 21 is a circular hole, which is shown in figure 3. In specific implementation, the fixing plate 2 is a rectangular plate, and the fixing holes 21 are disposed at four positions, which are respectively disposed at four corners of the fixing plate 2 and are distributed in a central symmetry manner. The sliding plate 1 and the fixed plate 2 are both made of steel materials. The connecting points of the fixing plate 2 and the anchoring reinforcing steel bars 4 are positioned inside or on the edge of a rectangular frame formed by the fixing holes 21 at four positions.

Fixing bolt 3 part: referring to fig. 1, the sliding plate 1 and the fixed plate 2 are tightly fit through the sliding hole 11 and the fixed hole 21.

The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The utility model provides a two T board support connection structure which characterized in that includes:

sliding plate (1): the upper surface of the sliding plate is welded with two ends of the bottom of the double-T plate, and a sliding hole (11) is formed in the sliding plate (1);

fixing plate (2): the lower surface of the fixing plate is connected with an anchoring steel bar (4) at the upper end of the concrete beam, and a fixing hole (21) is formed in the fixing plate (2);

fixing bolt (3): the sliding plate penetrates through the sliding hole (11) and the fixing hole (21) so that the sliding plate (1) and the fixing plate (2) are tightly attached;

the cross section area of the opening of the sliding hole (11) is larger than that of the opening of the fixing hole (21).

2. A double-T plate holder connection according to claim 1, wherein said sliding hole (11) is an oblong hole and said fixing hole (21) is a circular hole.

3. A double T-plate carrier coupling structure according to claim 2, wherein the length of the minor axis of the sliding hole (11) is equal to the length of the inner diameter of the fixing hole (21).

4. The connecting structure of a double-T plate support according to claim 3, wherein the sliding plate (1) is a rectangular plate, and the sliding holes (11) are opened at four positions, are respectively opened at four corners of the sliding plate (1), and are distributed in a central symmetry manner.

5. The connecting structure of a double-T plate support according to claim 4, wherein the fixing plate (2) is a rectangular plate, and the fixing holes (21) are opened at four positions, are respectively opened at four corners of the fixing plate (2), and are distributed in a central symmetry manner.

6. A double T-plate carrier connection according to claim 5, characterized in that said sliding holes (11) coincide with the central axis of the fixing holes (21).

7. The connecting structure of a double-T plate support according to claim 1, wherein the sliding plate (1) and the fixed plate (2) are made of steel.

8. A double-T plate support connection structure according to claim 5, characterized in that the welding point of the sliding plate (1) and the bottom of the double-T plate is located in the middle of the sliding plate (1) and inside the rectangular frame formed by the sliding holes (11).

9. A double-T plate support connection structure according to claim 5, wherein the connection points of the fixing plate (2) and the anchoring reinforcement (4) are located inside or on the edges of a rectangular frame formed by four fixing holes (21).