CN219281356U

CN219281356U - Double precast beam support changing structure

Info

Publication number: CN219281356U
Application number: CN202320240273.8U
Authority: CN
Inventors: 蔡向荣; 葛树奎; 张家豪; 赵海艳; 刘学; 柯晓光
Original assignee: Liaoning Province Building Science Research Institute Co ltd
Current assignee: Liaoning Province Building Science Research Institute Co ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-06-30
Anticipated expiration: 2033-02-17

Abstract

The utility model discloses a double precast beam support replacement structure, which comprises: the concrete pile comprises a first concrete precast joist, a second concrete precast joist and connecting pins, wherein the first concrete precast joist and the second concrete precast joist are identical in structure, a plurality of pin bolt holes and embedded steel plates are arranged in the first concrete precast joist and the second concrete precast joist at intervals, the first concrete precast joist and the second concrete precast joist are respectively arranged on two sides of the upper part of a load-bearing wall to be dismantled, the connecting pins are multiple and are inserted in the pin bolt holes of the first concrete precast joist, the load-bearing wall to be dismantled and the second concrete precast joist in a one-to-one correspondence manner, two ends of the pin bolt holes are locked through nuts, and the nuts are connected with the outer end faces of the embedded steel plates. The double precast beam support replacing structure simplifies the construction process, reduces the construction difficulty, shortens the construction period and improves the site construction environment.

Description

Double precast beam support changing structure

Technical Field

The utility model relates to the field of masonry structure building updating and reconstruction in urban updating, and particularly provides a double precast beam support structure.

Background

In the background of the national urban updating strategy, some existing masonry structure houses in old urban areas face the transformation requirement of expanding the use space. In order to meet the requirement of transformation, a common method comprises a single-joist support and exchange technology and a double-joist support and exchange technology, wherein the single-joist support and exchange technology is generally only suitable for support and exchange transformation of houses with low upper load, the double-joist support and exchange technology is to pour concrete beams on two sides of an original wall, and after the support and exchange beam concrete reaches a certain design strength, the wall to be disassembled is disassembled, and the method has the following problems or disadvantages due to larger bearing capacity and wider application range: (1) A large amount of wet operation is needed in the construction process, the construction period is long, and the quality of in-situ pouring is not easy to guarantee; (2) The original wall body and the newly added side sandwich beams are not easy to form integral cooperative work, so that the construction difficulty is further increased when the concrete connecting key is arranged, and the on-site wet operation and the construction period are further prolonged; (3) The in-situ poured underpinning beam has single appearance, so that the requirements of the transformation engineering on various shapes of the underpinning beam can not be met; (4) The in-situ poured underpinning beam can not meet the requirements of reconstruction engineering with strict requirements on construction precision.

Therefore, how to improve the double-joist underpinning structure becomes a problem to be solved.

Disclosure of Invention

In view of the above, the utility model aims to provide a double prefabricated Liang Tuohuan structure, which solves the problems of large wet workload, long construction period, difficult coordination between the original wall and the newly added components and the like of the existing double joist underpinning structure.

The technical scheme provided by the utility model is as follows: double precast beam holds in palm trades structure includes: the concrete pile comprises a first concrete precast joist, a second concrete precast joist and connecting bolts, wherein the first concrete precast joist and the second concrete precast joist are identical in structure, a plurality of bolt holes and embedded steel plates are arranged in the first concrete precast joist and the second concrete precast joist at intervals, the embedded steel plates are vertically arranged, the bolt holes are transversely arranged and penetrate through the embedded steel plates, the first concrete precast joist and the second concrete precast joist are respectively arranged on two sides of the upper part of a bearing wall to be dismantled and clamp the bearing wall to be dismantled, the bearing wall to be dismantled is provided with bolt holes corresponding to the bolt holes in the first concrete precast joist and the second concrete precast joist in one-to-one mode, the connecting bolts are inserted into the bolt holes of the first concrete precast joist, the bearing wall to be dismantled and the embedded steel plates in one-to-one mode, and the two ends of the bolt holes are locked through nuts, and the nuts are connected with the outer end faces of the embedded steel plates.

Preferably, the first concrete precast joist and the second concrete precast joist are leveled and bonded with the to-be-removed bearing wall through an adhesive.

Further preferably, a gasket is provided between the nut and the embedded steel plate.

Further preferably, nut mounting holes are prefabricated on the first concrete precast joist and the second concrete precast joist, and the nuts are mounted in the nut mounting holes in a matched mode.

The double-precast-beam support-exchange structure provided by the utility model adopts the precast beam components to replace cast-in-place beam components, so that the on-site wet operation can be avoided, the construction period is shortened, the factory precast beam components can meet the modeling and precision requirements of various reconstruction projects on the support-exchange beam, and the quality of the support-exchange beam can be ensured; the connection between the prefabricated part and the original wall body is realized by adopting the connecting pin bolt, so that the coordination work between the original wall body and the prefabricated beam is ensured; the connecting pin bolt and the precast beam are assembled for construction, so that the construction flow is simplified, the construction difficulty is reduced, the construction period is shortened, and the site construction environment is improved.

Drawings

The utility model will be described in further detail with reference to the accompanying drawings and embodiments:

fig. 1 is a schematic structural diagram of a dual prefabricated Liang Tuohuan structure provided by the present utility model.

Detailed Description

The utility model will be further explained below in connection with specific embodiments, but is not limited to the utility model.

In order to solve the problems of large wet workload, long construction period, difficult coordination work between an original wall body and a newly-added member and the like of the prior double-beam underpinning structure, as shown in fig. 1, the utility model provides a double-precast beam underpinning structure, which comprises the following components: the concrete pile comprises a first concrete precast joist 1, a second concrete precast joist 2 and connecting bolts 3, wherein the first concrete precast joist 1 and the second concrete precast joist 2 are identical in structure, a plurality of bolt holes and embedded steel plates 4 are arranged in the first concrete precast joist 1 and the second concrete precast joist 2 at intervals, the embedded steel plates 4 are vertically arranged, the bolt holes are transversely arranged and penetrate through the embedded steel plates 4, the first concrete precast joist 1 and the second concrete precast joist 2 are respectively arranged on two sides of the upper part of a load-bearing wall 10 to be dismantled and clamp the load-bearing wall 10 to be dismantled, the bolt holes which are in one-to-one correspondence with the bolt holes in the first concrete precast joist 1 and the second concrete precast joist 2 are arranged on the load-bearing wall 10, the connecting bolts 3 are multiple, the bolt holes which are in one-to-one correspondence inserted into the first concrete precast joist 1, the load-bearing wall 10 to be dismantled and the embedded steel plates 2 are locked by nuts 5, and the two ends of the nuts 5 are connected with the outer end faces of the embedded steel plates 4.

The construction method of the double prefabricated Liang Tuohuan structure comprises the following steps: firstly, punching holes on the upper part of a bearing wall to be dismantled according to the positions of pin holes in a first concrete precast joist and a second concrete precast joist, then correspondingly installing the first concrete precast joist and the second concrete precast joist on two sides of the upper part of the bearing wall to be dismantled and clamping the bearing wall to be dismantled, and the pin holes in the first concrete precast joist and the second concrete precast joist are in one-to-one correspondence with the holes punched on the bearing wall to be dismantled, then connecting the first concrete precast joist and the second concrete precast joist with the bearing wall to be dismantled by utilizing connecting pins and nuts to realize the installation of a underpinning structure, and later, dismantling the lower part of the bearing wall to be dismantled to realize the expansion of a house use space.

As an improvement of the technical scheme, as shown in fig. 1, the first concrete precast joist 1 and the second concrete precast joist 2 are leveled and bonded with the to-be-removed bearing wall 10 by an adhesive 7, wherein the high-strength adhesive is adopted to leveling the to-be-removed bearing wall in the range of installing the precast joist before the first concrete precast joist and the second concrete precast joist are installed, and then the precast joist is installed.

As an improvement of the technical scheme, as shown in fig. 1, a gasket 6 is arranged between the nut 5 and the embedded steel plate 4.

As an improvement of the technical scheme, as shown in fig. 1, nut mounting holes are prefabricated on the first concrete precast joist 1 and the second concrete precast joist 2, the nuts 5 are mounted in the nut mounting holes in a matched manner, and preferably, the connecting pin bolts and the nuts do not protrude out of the outer end surfaces of the first concrete precast joist and the second concrete precast joist.

The embodiments of the utility model have been written in an incremental manner with emphasis on the differences between the various embodiments being placed upon which similar parts may be seen.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. Double precast beam holds in palm trades structure, its characterized in that includes: the novel concrete pile comprises a first concrete precast joist (1), a second concrete precast joist (2) and connecting pins (3), wherein the first concrete precast joist (1) and the second concrete precast joist (2) are identical in structure, a plurality of pin bolt holes and embedded steel plates (4) are arranged at intervals in the first concrete precast joist (1) and the second concrete precast joist (2), the embedded steel plates (4) are vertically arranged, the pin bolt holes are transversely formed and penetrate through the embedded steel plates (4), the first concrete precast joist (1) and the second concrete precast joist (2) are respectively arranged on two sides of the upper portion of a to-be-removed bearing wall (10) and clamp the to-be-removed bearing wall (10), the pin bolt holes which are in one-to-one correspondence with the pin bolt holes in the first concrete precast joist (1) and the second concrete precast joist (2) are arranged, the connecting pins (3) are inserted into the first concrete precast joist (1), the to-be-removed bearing wall (10) and the two ends of the second concrete precast joist (2) are connected with the embedded steel plates (5).

2. The dual precast beam pallet structure according to claim 1, wherein: the first concrete precast joist (1) and the second concrete precast joist (2) are leveled and bonded with the to-be-removed bearing wall (10) through an adhesive (7).

3. The dual precast beam pallet structure according to claim 1, wherein: a gasket (6) is arranged between the nut (5) and the embedded steel plate (4).

4. The dual precast beam pallet structure according to claim 1, wherein: the nut mounting holes are prefabricated in the first concrete precast joist (1) and the second concrete precast joist (2), and the nuts (5) are mounted in the nut mounting holes in a matched mode.