CN219100074U

CN219100074U - Prefabricated steel pipe concrete bearing structure node connecting device and bearing structure

Info

Publication number: CN219100074U
Application number: CN202320203600.2U
Authority: CN
Inventors: 田海光; 殷险峰; 赵文强; 潘野; 张秉鹤; 赵亚平; 李淑强; 王海丽; 徐献超; 丰帅; 张力源; 孟涛
Original assignee: Qingdao Metro Planning And Design Institute Co ltd
Current assignee: Qingdao Metro Planning And Design Institute Co ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-05-30
Anticipated expiration: 2033-02-10

Abstract

The utility model relates to a node connecting device of a precast steel tube concrete supporting structure and a supporting structure, and belongs to the technical field of constructional engineering. The support structure comprises prefabricated steel pipe concrete, wherein the outer layer of the prefabricated steel pipe concrete is steel pipe, the inner layer of the prefabricated steel pipe concrete is concrete, and steel plates are welded at the end parts of the prefabricated steel pipe concrete; the steel plate is fixedly connected with a connecting steel pipe which is surrounded outside the precast steel pipe concrete and is matched with the precast steel pipe concrete; the outer surface of the connecting steel pipe is provided with a groove; the node connecting device comprises two semicircular hoops, wherein the inner surfaces of the semicircular hoops are provided with protruding rib plates, and the protruding rib plates are matched with grooves on the connecting steel plates; a wing plate is arranged at the end part of the semicircular anchor ear; the wing plate is provided with a plurality of bolt connecting holes. The node connecting device provided by the utility model is convenient to install, disassemble and transport, is not easy to move, is more stable to connect, can ensure the tension capacity of the node, and can be reused.

Description

Prefabricated steel pipe concrete bearing structure node connecting device and bearing structure

Technical Field

The utility model belongs to the technical field of constructional engineering, and particularly relates to a node connecting device for a precast steel tube concrete support structure and a support structure.

Background

The prefabrication assembly technology is a development trend of the building industry, and the prefabrication assembly reinforced concrete support can realize standardization, industrialization and recycling of components. The quick dismantling of the support is realized, the labor force can be greatly saved, the construction efficiency is improved, and the method accords with the high-quality development concept of green, environment-friendly and low-carbon. Because the foundation pit is stressed complicated, the first supporting structure is required to simultaneously meet the stress performance of compression and tension in order to ensure the safety and the integrity of the foundation pit. Patent CN217105130U discloses a precast concrete supporting structure for foundation pit, which connects precast concrete structures of two sections of prestressed structures through a flange plate, but the flange plate structure is relatively complex, and the installation speed is slow. And the support needs to be rotated for alignment, so that the bolt hole alignment difficulty is high.

Disclosure of Invention

Aiming at the defects existing in the related art, the utility model provides the node connecting device and the supporting structure of the precast concrete filled steel tube supporting structure, and the connecting device is convenient to install and detach, is not easy to move, is more stable in connection, can ensure the tension capacity of the node, and can be reused.

The utility model provides a node connecting device of a precast steel pipe concrete supporting structure, wherein the supporting structure comprises precast steel pipe concrete, the outer layer of the precast steel pipe concrete is steel pipe, the inner layer of the precast steel pipe concrete is concrete, and steel plates are welded at the end parts of the precast steel pipe concrete; the steel plate is fixedly connected with a connecting steel pipe which is surrounded outside the precast steel pipe concrete and is matched with the precast steel pipe concrete; the outer surface of the connecting steel pipe is provided with a groove; the node connecting device comprises two semicircular hoops, wherein the inner surfaces of the semicircular hoops are provided with protruding rib plates, and the protruding rib plates are matched with grooves on the connecting steel plates; a wing plate is arranged at the end part of the semicircular anchor ear; the wing plate is provided with a plurality of bolt connecting holes.

Preferably, the bolt is matched with the bolt connecting hole.

The utility model also provides a prefabricated steel pipe concrete supporting structure for the foundation pit, which comprises the node connecting device.

Preferably, the prefabricated steel pipe concrete support structure for the foundation pit further comprises a crown beam, and a cast-in-situ section support connected with the crown beam; cast-in-situ supporting steel bars are arranged in the cast-in-situ section support.

Preferably, the cast-in-situ section support is connected with one end of the precast steel pipe concrete.

Preferably, the prefabricated steel pipe concrete is provided with a reinforcing steel bar in the interior of one end which is connected with the cast-in-situ section support, and the tail end of the reinforcing steel bar is sequentially connected with an end steel plate and a connecting sleeve.

Preferably, the precast steel pipe concrete is of a hollow structure.

Preferably, the cast-in-place segment support is cast directly onto the crown Liang Cebu.

Preferably, the lower part of the crown beam is connected with the enclosure.

The utility model provides a node connecting device for a precast steel pipe concrete supporting structure, which comprises two semicircular hoops, wherein two sections of precast steel pipe concrete can be simultaneously clamped by adopting the semicircular hoops, and meanwhile, a convex rib plate is arranged on the inner surface of the semicircular hoops, a steel plate and a connecting steel pipe are arranged on the precast steel pipe concrete, and a groove which is matched with the convex rib plate is arranged on the connecting steel pipe. Therefore, connection can be performed in accurate positioning, the anchor ear is not easy to move, the connection stability is improved, and the tension capacity of the node can be ensured. The connection mode is convenient and quick, and the disassembly is convenient.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic view of a precast concrete filled steel tube support structure of the present utility model;

FIG. 2 is a schematic diagram of a node connection arrangement of the present utility model;

FIG. 3 is a schematic view of a semi-circular anchor ear of the present utility model;

FIG. 4 is a schematic view of a joined steel pipe according to the present utility model;

FIG. 5 is a schematic view of a raised rib of the present utility model;

FIG. 6 is a schematic view of a wing plate of a semi-circular anchor ear of the present utility model;

FIG. 7 is a schematic diagram of reinforcement at the end of the precast concrete filled steel tube support structure of the present utility model;

the steel pipe comprises a 1-steel pipe, 2-concrete, a 3-steel plate, a 4-connecting steel pipe, a 5-semicircular anchor ear, a 6-wing plate, a 7-crown beam, an 8-enclosure, a 9-cast-in-situ section support, a 10-bolt connecting hole, an 11-protruding rib plate, a 12-groove, a 13-end steel plate, a 14-connecting sleeve, a 15-cast-in-situ supporting steel bar and a 16-steel bar.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-7, the utility model provides a node connecting device of a precast steel pipe concrete supporting structure, wherein the supporting structure comprises precast steel pipe concrete, the outer layer of the precast steel pipe concrete is steel pipe 1, the inner layer of the precast steel pipe concrete is concrete 2, and steel plates 3 are welded at the end parts of the precast steel pipe concrete; the steel plate 3 is fixedly connected with a connecting steel pipe 4, and the connecting steel pipe 4 is surrounded outside the precast steel pipe concrete and is matched with the precast steel pipe concrete; the outer surface of the connecting steel pipe 4 is provided with a groove 12; the node connecting device comprises two semicircular hoops 5, wherein protruding rib plates 11 are arranged on the inner surfaces of the semicircular hoops 5, and the protruding rib plates are matched with grooves 12 on the connecting steel pipes 4; a wing plate 6 is arranged at the end part of the semicircular anchor ear; the wing plate 6 is provided with a plurality of bolt connecting holes 10.

In the utility model, the concrete filled steel tube support structure node connecting device comprises the following concrete usage method:

placing the first section and the second section of precast steel pipe concrete in place, aligning the steel plates 3 at the end parts of the two sections of precast steel pipe concrete, connecting the convex rib plates 11 on the inner surface of the semicircular anchor ear 5 with the grooves 12 on the connecting steel pipe 4, connecting bolts through the bolt connecting holes 10 on the two wing plates 6, and so on, so as to realize the connection of the multi-section precast steel pipe concrete. It should be noted that, in fig. 1, two wing plates 6 are installed on the node connecting device outside the two sections of precast steel pipe concrete, and the encircling precast steel pipe concrete is in a symmetrical structure, in fig. 1, only one side is shown, and the other side is omitted.

In the present utility model, further, in order to facilitate the connection and installation, it is preferable to further include a bolt adapted to the bolt connection hole.

In the utility model, further, the prefabricated steel pipe concrete support structure for the foundation pit further comprises a crown beam 7 and a cast-in-situ section support 9 connected with the crown beam 7; cast-in-situ supporting steel bars 15 are arranged in the cast-in-situ section support 9.

In the utility model, further, the cast-in-situ section support 9 is connected with one end of the precast steel pipe concrete.

In the utility model, further, the precast steel pipe concrete is provided with a steel bar 16 in the inner part of one end connected with the cast-in-situ section support 9, and the tail end of the steel bar 16 is sequentially connected with an end steel plate 13 and a connecting sleeve 14. In the present utility model, by such arrangement, the cast-in-place support bar 15 can be directly anchored into the coupling sleeve 14 for quick installation during installation. Meanwhile, the steel bars 16 are arranged in the precast steel tube concrete at one end connected with the cast-in-situ section support 9, so that the tensile strength of the end part of the precast steel tube concrete support structure can be ensured.

In the utility model, further, the precast concrete filled steel tube is of a hollow structure. In the utility model, the weight can be reduced by the arrangement, and the transportation and the installation are convenient.

In the utility model, further, the cast-in-situ section support 9 is directly poured on the side part of the crown beam 7.

In the utility model, further, the lower part of the crown beam 7 is connected with a surrounding 8.

In the utility model, the concrete filled steel tube support structure for the foundation pit comprises the following concrete usage method:

after the foundation pit is excavated to the elevation of the support bottom, anchoring cast-in-situ supporting steel bars 15 into the connecting sleeve 14, placing and connecting different sections of precast steel pipe concrete in place, pouring the concrete of the crown beam 7 and the cast-in-situ section support 9 after the connection is completed, and realizing the integral connection of the precast steel pipe concrete and the enclosure. When the cast-in-situ section support 9 at the end part is cut and bolts of the anchor ear type wing plates 12 are removed, the prefabricated steel pipe concrete support can be quickly removed.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims

1. The node connecting device of the prefabricated steel pipe concrete supporting structure is characterized in that the supporting structure comprises prefabricated steel pipe concrete, wherein the outer layer of the prefabricated steel pipe concrete is steel pipe, the inner layer of the prefabricated steel pipe concrete is concrete, and steel plates are welded at the end parts of the prefabricated steel pipe concrete; the steel plate is fixedly connected with a connecting steel pipe which is surrounded outside the precast steel pipe concrete and is matched with the precast steel pipe concrete; the outer surface of the connecting steel pipe is provided with a groove; the node connecting device comprises two semicircular hoops, wherein the inner surfaces of the semicircular hoops are provided with protruding rib plates, and the protruding rib plates are matched with grooves on the connecting steel plates; a wing plate is arranged at the end part of the semicircular anchor ear; the wing plate is provided with a plurality of bolt connecting holes.

2. A precast concrete filled steel tube support structure node connection apparatus as recited in claim 1, further comprising a bolt adapted to the bolt connection hole.

3. A precast concrete filled steel tube support structure for a foundation pit, comprising the node connecting device according to claim 1 or 2.

4. A precast concrete filled steel tube support structure for a foundation pit according to claim 3, wherein the precast concrete filled steel tube support structure for a foundation pit further comprises a crown beam, and a cast-in-place section support connected with the crown beam; cast-in-situ supporting steel bars are arranged in the cast-in-situ section support.

5. The precast concrete filled steel tube support structure for a foundation pit of claim 4, wherein the cast-in-place section support is connected to one end of the precast concrete filled steel tube.

6. The precast concrete filled steel tube supporting structure for a foundation pit according to claim 5, wherein the precast concrete filled steel tube is provided with a reinforcing bar inside an end connected with the cast-in-place section support, and the end of the reinforcing bar is sequentially connected with an end steel plate and a connecting sleeve.

7. A precast concrete filled steel tube support structure for a foundation pit according to claim 3, wherein the precast concrete filled steel tube is a hollow structure.

8. A precast steel duct concrete support structure for a foundation pit according to claim 4, wherein the cast-in-place section support is directly poured on the crown Liang Cebu.

9. The precast concrete filled steel tube support structure for a foundation pit according to claim 4, wherein the lower part of the crown beam is connected with the enclosure.