CN-121992883-A - Assembled hybrid frame structure for beam-column semi-rigid connection-column connection

Abstract

The invention belongs to the technical field of civil engineering, and discloses an assembled hybrid frame structure for beam-column semi-rigid connection-column connection, which comprises prefabricated columns and prefabricated beams which are matched with each other, and further comprises beam-column connecting pieces, wherein each beam-column connecting piece comprises column end section steel, one end of each column end section steel is fixedly connected with the prefabricated column, one end of each beam end section steel is fixedly connected with the free end of each column end section steel through a fixing piece, the free end of each beam end section steel is fixedly arranged in the prefabricated beam, the column end section steel and the beam end section steel are matched with the fixing pieces to form a semi-rigid node, the column end section steel is rigidly fixedly connected with the prefabricated columns through the linear elastic deformation characteristic of the section steel and the constraint of the fixing pieces, the beam end section steel is pre-buried in the prefabricated beams to form rigid anchoring, plastic hinges are led to form at the beam ends, the anti-seismic design objective of a strong beam and a weak beam is realized from the structural mechanism, and the problem that plastic hinges cannot be transferred to the column end area is solved.

Inventors

• LI DONGYI
• TIAN KUAN
• LI YINGMIN
• CHEN ANLI
• JIANG BAOLONG
• TANG YANGYANG
• JI SHUYAN
• Pan weihao
• YANG HONGWU
• LEI CHENG

Assignees

• 重庆大学
• 重庆建筑工程职业学院

Dates

Publication Date

20260508

Application Date

20260331

Claims (10)

1. 1. The utility model provides a beam column semi-rigid connection-assembled hybrid frame structure who connects in post, includes prefabricated post (1) and precast beam (2) of mutually supporting, its characterized in that still includes beam column connecting piece (3), beam column connecting piece (3) include: The column end section steel (31), one end of the column end section steel (31) is fixedly connected with the prefabricated column (1); the beam end section steel (32), the one end of beam end section steel (32) passes through mounting (35) fixed connection with the free end of post end section steel (31), the free end of beam end section steel (32) is fixed to be located in precast beam (2).
2. 2. The beam-column semi-rigid connection-column connection fabricated hybrid frame structure of claim 1, further comprising a load bearing assembly (5), wherein the load bearing assembly (5) comprises a steel plate (51) and a floor slab (52), the steel plate (51) is fixedly arranged on the top surface of the upper flange of the beam-end section steel (32), and the floor slab (52) is fixedly arranged on the upper surface of the steel plate (51).
3. 3. The beam-column semi-rigid connection-column connection assembled hybrid frame structure according to claim 2, wherein the steel plates (51) and the floor plates (52) are of rectangular structures, the four right-angle ends are provided with L-shaped clamping grooves (53) which are coaxially communicated, L-shaped shock pads (54) are arranged in the clamping grooves, one sides of the shock pads (54) are abutted to the junction of the precast columns (1) and the precast beams (2), and the other sides of the shock pads are abutted to the groove walls of the clamping grooves (53).
4. 4. The beam-column semi-rigid connection-in-column connection fabricated hybrid frame structure of claim 1, wherein said fastener (35) comprises a bolt (351) and a nut (352), said bolt (351) threadedly engaging said nut (352).
5. 5. The beam-column semi-rigid connection-column connection assembled hybrid frame structure according to claim 4, wherein the beam-column connection (3) further comprises a cover plate (33) and a friction plate (34), the friction plate (34) is arranged between the column end section steel (31) and the cover plate (33), the cover plate (33) and the friction plate (34) are respectively provided with a through hole (36) for a bolt (351) to pass through, and the bolt (351) passes through the through hole (36) and is in threaded connection with a nut (352).
6. 6. The beam-column semi-rigid connection-column connection assembled hybrid frame structure according to claim 1, wherein the flange of the free end of the beam-end section steel (32) is fixedly connected with the steel bars in the prefabricated beam (2), the prefabricated column (1) comprises a plurality of square steel columns (11), and the square steel columns (11) are fixed through the column-in connection pieces (4).
7. 7. The beam-column semi-rigid connection-column connection assembled hybrid frame structure according to claim 6, wherein the column-column connection piece (4) comprises a connection steel plate (41) and a surrounding steel plate (42), the connection steel plate (41) is a cross-shaped connection steel plate (41), the number of the square steel columns (11) is four, the four square steel columns (11) are fixedly connected with the outer ends of four limb plates of the connection steel plate (41) respectively, and the outer sides of the four square steel columns (11) are fixedly connected with the surrounding steel plate (42).
8. 8. The beam-column semi-rigid connection-column connection fabricated hybrid frame structure of claim 4, wherein said fixture (35) further comprises a spring (353) and a cleaning brush (354), one end of said spring (353) is fixedly connected to a nut (352), a free end of said spring (353) is fixedly connected to said cleaning brush (354), and bristles of said cleaning brush (354) are in contact with said bolt (351).
9. 9. The beam-column semi-rigid connection-in-column connection fabricated hybrid frame structure of claim 8, wherein bristles of said cleaning brush (354) are perpendicular to a central axis of the bolt (351), and wherein a bristle length of said cleaning brush (354) is greater than a radial thread height of the thread of the bolt (351).
10. 10. The beam-column semi-rigid connection-column connection fabricated hybrid frame structure of claim 9, wherein the nut (356) of the bolt (351) is provided with a slot (355) with one end open, the slot (355) is matched with a cleaning brush (354), and the cleaning brush (354) is used for being inserted into the slot (355) after the nut (352) is locked with the bolt (351).

Description

Assembled hybrid frame structure for beam-column semi-rigid connection-column connection Technical Field The scheme belongs to the technical field of civil engineering, and particularly relates to an assembled hybrid frame structure for beam-column semi-rigid connection-column connection. Background The beam column assembly hybrid frame structure is an assembly stress formed by combining a precast concrete member and a steel member, and the structure uses a beam column joint as a core force transmission part, and transmits bending moment, shearing force and axial force through a beam column connection structure, so that the whole rigidity and bearing capacity of the structure are ensured, and meanwhile, the structure has rapid assembly construction. In the beam column frame structure, beam column joints connect precast beam columns into a whole, the connection joints play roles in load transmission and anti-seismic energy consumption, and the connection parts of the stress components occupy the important positions in the frame structure. See in the literature of prior publication (bulletin) number CN116220197A a beam column connection node and assembled concrete frame is disclosed, beam column connection node including fixed cover establish the steel sleeve on precast concrete post, the welding has steel tie-beam on the steel sleeve, is connected through low yield point's girder steel coupling assembling between the steel tie-beam on the steel sleeve and the steel tie-beam of one end pre-buried in precast concrete roof beam, through high-strength friction type bolted connection between girder steel coupling assembling and the steel tie-beam. For example, the beam column connecting node can realize the rapid assembly of precast beam columns, complete the transmission of vertical and horizontal loads, and meet the requirements of conventional stress and construction and installation, but because the anchoring node can not realize controllable deformation in a fixed range, the rigidity of the node lacks adjusting space, the stress distribution between the beam columns can not be realized through coordinated deformation, the plastic hinge cannot be guided to form at the beam end by means of a preset deformation path, the normal deformation of the beam end can be blocked due to the fact that the rigidity of the node is larger and the restraint is too strong, the plastic hinge is easily transferred to a column end or a node core area, and then the anti-seismic design core principle of a strong column and weak beam of a frame structure is violated. Disclosure of Invention The invention provides an assembled hybrid frame structure for beam-column semi-rigid connection-column connection, which aims to solve the problem that a beam-column connection node cannot deform in a fixed range. The embodiment of the invention provides an assembled hybrid frame structure for beam-column semi-rigid connection-column connection, which comprises prefabricated columns and prefabricated beams which are matched with each other, and also comprises beam-column connectors, wherein the beam-column connectors comprise: the column end section steel, one end of which is fixedly connected with the prefabricated column; and one end of the beam end section steel is fixedly connected with the free end of the column end section steel through a fixing piece, and the free end of the beam end section steel is fixedly arranged in the precast beam. The principle and the effect of the scheme are that the column end section steel and the beam end section steel form a semi-rigid node by matching with a fixing piece, the column end section steel is rigidly fixedly connected with the prefabricated column by the linear elastic deformation characteristic of the section steel and the constraint of the fixing piece, the beam end section steel is pre-embedded in the prefabricated beam to form rigid anchoring, the column end section steel and the prefabricated beam are connected by the fixing piece, the rotation rigidity of the node is jointly determined by the bending rigidity of the section steel and the connection rigidity of the fixing piece, the mechanical parameters of the section steel and the fixing piece are preset, the elastic rotation capacity of the node in a fixing range can be set, the beam-column relative rotation is coordinated by the controllable deformation of the node under the action of horizontal load, the plastic hinge is guided to form at the beam end, the anti-seismic design target of the strong column and the weak beam is realized on the structural mechanism, and the plastic hinge is prevented from transferring to the column end region. Further, the beam-end section steel comprises a bearing assembly, wherein the bearing assembly comprises a steel plate and a floor slab, the steel plate is fixedly arranged on the top surface of the upper flange of the beam-end section steel, and the floor slab is fixedly arranged on the upper surface o