CN-116065689-B - Dry-type connecting node for beam column of assembled concrete frame and connecting method thereof

CN116065689BCN 116065689 BCN116065689 BCN 116065689BCN-116065689-B

Abstract

The invention discloses an assembled concrete frame beam column dry-type connection node which comprises a precast concrete hollow column and two steel sleeves used for connecting beams, wherein the two steel sleeves are symmetrically distributed and enclose the precast concrete hollow column, a locking assembly is connected between the two steel sleeves in a locking manner and comprises an upper spring ring, a lower spring ring, prestressed reinforcements and bolt and nut assemblies, the steel sleeves comprise steel ring plates, an assembly plate and a plurality of rib plates, the inner surfaces of the steel ring plates are tightly abutted to the outer walls of the precast concrete hollow column, the outer walls of the upper parts of the steel ring plates are provided with first positioning grooves used for nesting the upper spring rings, the outer walls of the lower parts of the steel ring plates are provided with second positioning grooves used for nesting the lower spring rings, the outer walls of the middle parts of the steel ring plates are provided with prestressed reinforcement channels through which the prestressed reinforcements correspondingly penetrate, and the assembly plate is provided with connecting holes used for assembling the bolt and nut assemblies. The invention can flexibly adjust and install according to the position of the beam column node, has simple structure, high standardization degree and low construction cost.

Inventors

CAI FENGWEI
LUO CHIYU
JIN CANGUO
XIANG QIAN
LI JIANFENG
XU GANG
CHEN XUMIAO
CHEN JINYU
ZHOU YONGYI

Assignees

广东省建筑设计研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20230320

Claims (7)

1. The assembled concrete frame beam column dry-type connection node comprises a precast concrete hollow column and two steel collars used for connecting beams, wherein the two steel collars are symmetrically distributed and encircle the precast concrete hollow column, a locking assembly is connected between the two steel collars in a locking mode and comprises an upper spring ring, a lower spring ring, at least one prestressed reinforcement and a plurality of bolt and nut assemblies, the steel collars comprise steel ring plates with semicircular cross sections, assembly plates respectively fixedly connected to two ends of the steel ring plates and a plurality of rib plates distributed along the outer walls of the steel ring plates at intervals, the inner surfaces of the steel ring plates are tightly abutted to the outer walls of the precast concrete hollow column, first positioning grooves which are located above the rib plates and used for nesting the upper spring rings are formed in the outer walls of the lower portions of the steel ring plates, second positioning grooves which are located below the rib plates and used for nesting the lower spring rings are formed in the outer walls of the lower portions of the steel ring plates, the middle portions of the steel ring plates are provided with corresponding prestressed reinforcement plates, a plurality of rib plates which are distributed at the same plane, two side through holes are formed in the two sides of the steel ring plates and are distributed in the same direction, the two side of the same positioning grooves are distributed between the two side of the steel ring plates and the two side of the prefabricated concrete frame beam column, and the two side channels are distributed on the side of the same side of the steel ring plates, and the two side of the prefabricated steel ring frames are distributed on the side of the steel ring frames are distributed on the side by the steel ring.
2. The dry connection node for fabricated concrete frame beams and columns according to claim 1, wherein the first positioning groove, the second positioning groove and the third positioning groove are grooves with rectangular cross sections.
3. The dry connection node of fabricated concrete framework beam column of claim 1, wherein the ribs are equally spaced along and perpendicular to the outer wall of the steel ring plate.
4. The dry connection node for beam columns of the fabricated concrete framework of claim 1, wherein the top of each rib plate and the top of the fabricated panel are commonly connected with an upper ring plate, the bottom of each rib plate and the bottom of the fabricated panel are commonly connected with a lower ring plate, the inner wall of the upper ring plate is fixedly connected with the outer wall of the steel ring plate, and the inner wall of the lower ring plate is fixedly connected with the outer wall of the steel ring plate.
5. The dry connection node for beam columns of fabricated concrete frames according to claim 4, wherein the thicknesses of the steel ring plate, the assembly plate, the rib plate, the upper ring plate and the lower ring plate are not less than 20mm.
6. The dry-type connection node for the assembled concrete frame beam column of claim 1, wherein the number of the prestressed reinforcement channels and the prestressed reinforcement channels is four, the prestressed reinforcement channels and the prestressed reinforcement channels are distributed at equal intervals along the outer wall of the steel sleeve, eight connection holes are formed in each assembly plate and are distributed in four layers, and two connection holes are formed in each layer.
7. A method for connecting the beam-column dry connection nodes of the fabricated concrete frame according to claims 1-6, comprising the following steps: S1, prefabricating a high-strength precast concrete hollow column in advance; s2, enclosing two steel ferrules around the outer wall of the precast concrete hollow column at the frame beam column joint; S3, embedding an upper spring ring by using a first positioning groove arranged at the upper part of the steel ferrule, and embedding a lower spring ring by using a second positioning groove arranged at the lower part of the steel ferrule, so as to preliminarily fix the two steel ferrules; s4, inserting prestressed reinforcement in the reserved prestressed reinforcement channel and tensioning the prestressed reinforcement to a design value so as to apply annular column radial pressure to the steel sleeve ring; s5, tightening and locking the connecting holes on the assembly plates positioned on the same side by adopting a bolt and nut assembly; And S6, connecting the beam with the steel sleeve ring, thereby completing the dry connection of the beam column nodes.

Description

Dry-type connecting node for beam column of assembled concrete frame and connecting method thereof Technical Field The invention relates to the technical field of assembly type buildings, in particular to an assembly type concrete frame beam column dry type connection node and a connection method thereof. Background In recent years, the field of fabricated buildings is vigorously developed, the research and development results of fabricated related technologies are tired, but because some key technologies at present are not yet fundamentally broken through, the construction cost of the fabricated building is still higher than that of the traditional building, and the standardization degree is still to be improved, for example, the fabricated components are still required to be produced according to the customization of different buildings. Currently, the industry thinks that the high-strength concrete pipe pile is applied to the frame column with the upper structure by utilizing the characteristics of high standardization degree, low cost and high bearing capacity of the high-strength concrete pipe pile, and the problem of low standardization degree of the frame column can be well solved. However, regarding the problem of beam column node dry connection standardization, the problem of beam column node dry connection standardization still cannot be well solved at present, the dry connection at present is mainly realized by connecting a built-in steel plate of a frame column at a node with a beam, transmitting beam end bending moment and shearing force, and the position of the steel plate on the frame column cannot be randomly adjusted. Disclosure of Invention In order to overcome the defects, the invention aims to provide an assembled concrete frame beam column dry type connecting node and a connecting method thereof, wherein two standardized steel rings are used for enclosing and fixing on a precast concrete hollow column according to the position of a preset beam column node, and the steel rings are prestressed to provide strong enough friction force and pressure for the steel rings and the precast concrete hollow column so as to provide a bearing vertical force, thereby bearing the bending moment transferred from a beam to the precast concrete hollow column. In order to achieve the above purpose, the present invention adopts the following technical scheme: The invention provides a beam column dry type connecting node of an assembled concrete frame, which comprises a precast concrete hollow column and two steel sleeves used for connecting beams, wherein the two steel sleeves are symmetrically distributed and encircle the precast concrete hollow column, a locking component is connected between the two steel sleeves in a locking mode, the locking component comprises an upper spring ring, a lower spring ring, at least one prestressed reinforcement and a plurality of bolt and nut components, the steel sleeves comprise steel ring plates with semicircular cross sections, assembly plates respectively fixedly connected to two ends of the steel ring plates and a plurality of rib plates distributed at intervals along the outer walls of the steel ring plates, the inner surface of the steel ring plates is tightly abutted to the outer walls of the precast concrete hollow column, first positioning grooves which are positioned above the rib plates and used for nesting the upper spring ring are formed in the outer walls of the upper portion of the steel ring plates, second positioning grooves which are positioned below the rib plates and used for nesting the lower spring ring are formed in the outer walls of the lower portion of the steel ring plates, the middle outer walls of the steel ring plates are provided with corresponding prestressed reinforcement through hole for installing the prestressed reinforcement connecting bolt and nut components. Further, the prestressed reinforcement channel comprises a third positioning groove formed in the outer wall of the steel ring plate and a through hole penetrating through the assembly plate and the rib plate. Preferably, the first positioning groove, the second positioning groove and the third positioning groove are distributed in parallel in the horizontal direction. Therefore, the upper spring ring, the lower spring ring and each prestressed reinforcement can apply annular column radial pressure to the steel annular plate conveniently. Preferably, the first positioning groove, the second positioning groove and the third positioning groove are grooves with rectangular cross sections. Therefore, the upper spring ring, the lower spring ring and each prestressed reinforcement can be accurately positioned and fixed on the steel ring plate, and loose sliding is avoided. Further, two assembly plates respectively located at two ends of the steel ring plate are distributed in a coplanar mode, and after the two steel rings enclose the precast concrete hollow column, a buffer gap is res