CN-116411642-B - Inserted pin cover plate type nested assembly beam column connecting node

CN116411642BCN 116411642 BCN116411642 BCN 116411642BCN-116411642-B

Abstract

The invention discloses a plug pin cover plate type nested assembly beam column connecting node which comprises a column assembly, a beam assembly and a connecting piece. The column assembly comprises an upper steel column, a lower steel column and box-shaped bracket pieces of a built-in bolt pipeline, the beam assembly comprises box-shaped fittings of a horizontal I-shaped steel beam and the built-in bolt pipeline, and the connecting pieces comprise bolt cover plates and high-strength bolts, and all the fittings are welded in factories. The box-shaped bracket piece of the built-in bolt pipeline is placed in the box-shaped bracket piece of the built-in bolt pipeline along the horizontal direction during installation, the box-shaped bracket piece is of a nested structure, the beam column components are connected through the bolt cover plate, the integrity of the node area is better, and finally the fastening between the components is completed through the high-strength bolts. The assembled beam column node is in full-bolt connection at a construction site, is convenient to operate, shortens construction time, is environment-friendly, has good mechanical properties, keeps flat upper and lower flange surfaces of the I-shaped steel beam, is convenient for subsequent floor installation, and is of a nested structure, so that rigidity and strength of the node are effectively improved.

Inventors

GUO PEIYAO
CHENG XIN
LI BIN
LIU JIANFEI

Assignees

太原理工大学

Dates

Publication Date: 20260508
Application Date: 20230403

Claims (7)

1. A plug pin cover plate type nested assembled beam column connecting node is characterized by comprising a column assembly, a beam assembly and a connecting piece, wherein the column assembly comprises an upper steel column, a lower steel column and box-shaped bracket pieces of built-in bolt pipelines, the beam assembly comprises a horizontal I-shaped steel beam and box-shaped fittings of built-in bolt pipelines, the connecting piece comprises a plug pin cover plate and a high-strength bolt, the box-shaped fittings of the built-in bolt pipelines are inserted into the box-shaped bracket pieces of the built-in bolt pipelines along the horizontal direction, the plug pin cover plate is covered on the vertical surfaces connected with the beam and column assemblies in parallel, and the node is fastened through the high-strength bolt.
2. The plug pin cover plate type nested assembly beam column connecting node of claim 1, wherein a square frame structure is formed by enclosing box-shaped fittings of the built-in bolt pipelines in a beam assembly by four steel plates, a cylindrical sleeve is arranged in the box-shaped fittings, eight rows of bolt holes are formed in the front vertical panel and the rear vertical panel, the corresponding positions of the bolt holes in the fittings are the cylindrical sleeves, and the fittings are prevented from being damaged due to overlarge pretightening force.
3. The plug-pin cover plate type nested assembled beam column connecting joint according to claim 1, wherein the box-shaped bracket piece of the built-in bolt pipeline in the column assembly comprises a top plate, a bottom plate, a rear vertical panel, a middle partition plate, a front vertical panel, a box-shaped bracket piece ear plate, a box-shaped bracket piece mortise, a built-in bolt pipeline and a cuboid frame connecting piece, wherein the cuboid frame connecting piece is respectively connected with an upper steel column and a lower steel column, holes are formed in a connecting surface, the top plate, the bottom plate, the rear vertical panel, the middle partition plate and the front vertical panel form a closed hollow rectangular structure, the built-in bolt pipeline is arranged in the closed hollow rectangular structure, four rows of eight bolt holes are respectively formed in the front vertical panel and the rear vertical panel and correspond to the built-in bolt pipeline and are used for bolts to pass through, the top plate, the bottom plate, the rear vertical panel and the middle partition plate enclose an open structure, the open structure is connected with box-shaped fittings of the built-in bolt pipeline, and the intersections of the rear vertical panel and the box-shaped fittings are correspondingly provided with bolt holes corresponding to the built-in bolt pipelines of the box-shaped fittings.
4. A plug pin cover plate type nested assembled beam column connecting node is characterized in that a top plate and a bottom plate of a box-shaped bracket piece open structure are slightly inclined slightly from an opening, so that a construction site and a beam assembly are convenient to install, four rows of sixteen bolt holes are formed in a rear vertical panel, a box-shaped bracket piece lug plate is welded on the left edge of the rear vertical plate of the box-shaped bracket piece, the bracket piece lug plate plays a certain role in fixing an I-shaped steel beam end plate to assist in stress, the top plate and the bottom plate are arranged in a step mode, two layers of steps are arranged in total, and three box-shaped bracket piece mortises are formed in the vertical cross sections of a second layer of steps of the top plate and the bottom plate.
5. The plug pin cover plate type nested assembly beam column connection node of claim 1, wherein the plug pin cover plate is a high-strength steel casting and comprises a top plate, a bottom plate, an ear plate and tenons, the width of the top plate and the width of the bottom plate are the same as the step width of the first layer of the top plate and the bottom plate of a box-shaped bracket piece with a built-in bolt pipeline, the ear plate of the cover plate is welded on the left side of the cover plate, the height of the ear plate is smaller than that of the cover plate, 3 tenons are arranged on the top plate and the bottom plate, the thickness of the tenons is slightly smaller than that of the top plate, the height of a vertical panel of the cover plate is equal to that of the box-shaped bracket piece, four rows of sixteen bolt holes are arranged on the vertical surface of the cover plate, and the positions of the bolt holes are respectively aligned with the bolt holes of the box-shaped bracket piece with the built-in bolt pipeline.
6. The plug-in cover plate type nested assembly beam column connection node according to claim 5, wherein the plug-in cover plate top and bottom plates are flush with the box-shaped bracket top and bottom plates of the built-in bolt pipeline, and the cover plate tenons are inserted into the box-shaped bracket mortises of the built-in bolt pipeline so that the connected areas are integrated.
7. A method of assembling a plug-and-socket-cap-type nested fabricated beam-column connection node as claimed in any one of claims 1 to 6, comprising the steps of: (1) The box-shaped fittings of the built-in bolt pipelines and the box-shaped bracket pieces of the built-in bolt pipelines are prefabricated in a factory, an upper steel column and a lower steel column are welded with the box-shaped bracket pieces of the built-in bolt pipelines through an upper partition plate and a lower partition plate, and an I-shaped steel beam is welded with the box-shaped fittings of the built-in bolt pipelines; (2) In a construction site, the column assembly is firstly installed, and a box-shaped bracket piece of a built-in bolt pipeline is opened towards the front side; (3) Hanging the beam assembly to the same horizontal position as the column assembly, aligning the box-shaped fitting of the built-in bolt pipeline with the box-shaped bracket opening part of the built-in bolt pipeline, horizontally moving the beam assembly, horizontally pushing the box-shaped fitting of the built-in bolt pipeline into the box-shaped bracket opening part of the built-in bolt pipeline, and at the moment, clamping the I-shaped steel beam end plate by the bracket lug plate and aligning corresponding bolt holes; (4) The bolt cover plate is arranged on a vertical plane connected with the beam and column components, the bolt cover plate ear plate clamps the end plate of the I-shaped steel beam, tenons on the top plate and the bottom plate are inserted into mortises of box-shaped bracket pieces of the built-in bolt pipelines, finally high-strength bolts at all positions are screwed and pretightening force is applied, node installation is completed, and a high-strength gasket is used during installation.

Description

Inserted pin cover plate type nested assembly beam column connecting node Technical Field The invention relates to a plug pin cover plate type nested assembly beam column connecting node, and belongs to the technical field of structural engineering. Background In recent years, with the strong promotion of industrialized construction of China, the assembled building of China rapidly develops. The assembled steel structure building has the characteristics of quick construction, low energy consumption, no limitation of climatic environment, less waste on construction sites and the like, can realize green, energy-saving and environment-friendly construction, is an industrial product, has rich vertical surfaces and good performance, and has a great development space in the field of assembled buildings. The traditional steel structure construction site has a large amount of welding work, so that the time is consumed, air pollution is easy to cause, and the reliability of the welding process cannot be ensured in flush connection. Compared with the traditional steel structure, the assembled steel structure has the advantages of improving production efficiency, saving energy, developing green buildings, improving and guaranteeing construction quality and the like, has been greatly popularized in China, such as the seismic performance test research of the double-sided connection Z-type all-bolt beam column connection nodes and the finite element analysis [ J ]. Industrial buildings, and the Z-type connection structure mentioned in 2021,51 (02): 59-65+89.) can effectively improve the seismic performance of the nodes, and has the defects of failing to guarantee the upper surface and the lower surface of the beam to be level and no protrusion. The method is an effective method for relieving the surplus of the current steel productivity, and is capable of greatly developing the assembled building, mainly promoting the construction of steel structure assembled houses, continuously improving the standardization level of components, promoting the formation of a complete industrial chain, promoting the industrial collaborative development of intelligent construction and buildings, conforming to the times of requirements of green low-carbon and technological energization and sustainable environment development in China. Disclosure of Invention The invention aims to provide a novel assembled beam column joint, which is used for realizing the connection of a steel column and a steel beam, greatly reducing the workload of field welding, ensuring the flush flange surface of an I-shaped steel beam and simultaneously ensuring the strength and the rigidity of the joint. After the beam column is assembled, the upper surface and the lower surface of the whole beam are kept flush, no protrusion exists, the subsequent floor installation and other projects are facilitated, the field installation is guaranteed to be full-bolt connection, the structure adaptability is high, the construction is convenient and fast, the section is not weakened, the connection reliability is higher than that of a welding mode, the structural rigidity is high, and finally the node has enough strength and rigidity due to the nested structure. In order to achieve the above purpose, the invention provides a plug pin cover plate type nested assembly beam column connecting node, which comprises a column assembly, a beam assembly and a connecting piece. The column assembly comprises an upper steel column, a lower steel column and a box bracket piece of a built-in bolt pipeline, the beam assembly comprises a horizontal I-shaped steel beam and a box fitting of the built-in bolt pipeline, and the connecting piece comprises a bolt cover plate and a high-strength bolt. The box-shaped fittings of the built-in bolt pipelines are inserted into the box-shaped bracket pieces of the built-in bolt pipelines along the horizontal direction, the bolt cover plates are covered on the vertical surfaces connected with the beam column fittings in parallel, the bolt holes are aligned during installation, and finally the joints are fastened by high-strength bolts, so that the assembly of the joints is completed. The box-shaped accessory of the built-in bolt pipeline in the beam assembly is rectangular empty box, a square frame structure is enclosed by four steel plates, a cylindrical sleeve is arranged in the box-shaped accessory to form the box-shaped accessory, four rows of eight bolt holes are arranged on the front vertical panel and the rear vertical panel, the corresponding positions of the bolt holes in the accessory are cylindrical sleeves, and the damage to the accessory caused by excessive pretightening force is avoided, and the wall thickness of the sleeve is properly thickened. The box-shaped bracket piece of the built-in bolt pipeline in the column assembly comprises a top plate, a bottom plate, a rear vertical panel, a middle partition plate, a front vertical panel, a box-sh