CN213448857U

CN213448857U - Prefabricated primary and secondary roof beam connected node

Info

Publication number: CN213448857U
Application number: CN202021809234.8U
Authority: CN
Inventors: 张伟伟; 吴宏磊; 曹明敏; 邱令乾
Original assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Current assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-06-15
Anticipated expiration: 2030-08-26

Abstract

The utility model relates to a prefabricated primary and secondary beam connected node, hang muscle portion including the segmentation, the segmentation hangs muscle portion and includes that the U type hangs muscle section (1), and the both ends that the muscle section (1) was hung to the U type are connected with the L type respectively and hang muscle section (2), and the L type hangs muscle section (2) and U type and hangs muscle section (1) and all is located the postcast breach of precast concrete girder (3), has placed precast concrete secondary beam (4) in the recess of muscle section (1) is hung to the U type. Compared with the prior art, the condition to precast concrete girder bottom elevation higher than precast concrete secondary beam bottom elevation, the utility model discloses can solve the problem that precast primary and secondary roof beam can't hoist and mount smoothly, and have construction convenience, efficient, safe and reliable's advantage.

Description

Prefabricated primary and secondary roof beam connected node

Technical Field

The utility model belongs to the technical field of the assembly type structure technique and specifically relates to a prefabricated primary and secondary roof beam connected node is related to.

Background

In the structural design, the joint of the primary beam and the secondary beam is the place with the most concentrated stress, and particularly, the shear force generated by the secondary beam to the main beam is large, so that a hanging rib needs to be arranged to resist the shear force. As a conventional PC (precast concrete) member, the factory precast concrete primary and secondary beams can greatly shorten the construction period, reduce the labor force and have wider application range. At present, the connection of the prefabricated main beam and the prefabricated secondary beam mainly has two modes, wherein the main beam is in lap joint with the prefabricated secondary beam in a mode of inserting ribs, and a reserved post-cast strip gap of the prefabricated main beam is in lap joint with the prefabricated secondary beam.

In the building and structural design, the main beam can be placed firstly and then the secondary beam can be placed for connection aiming at the condition that the elevation of the bottom of the main beam is lower than that of the bottom of the secondary beam, however, aiming at the condition that the elevation of the bottom of the main beam is higher than that of the bottom of the secondary beam, in the actual hoisting process of the fabricated building, due to the existence of the pre-buried hoisting bar of the main beam, the prefabricated main beam with the hoisting bar can not be hoisted smoothly on the construction site according to the requirement of the hoisting sequence, and due to the extremely limited operation space at the joint of the main beam and the secondary beam, the two ends of the gap are closed hoop areas with additional hoops, the common hoisting bar can not be placed directly on the site, and the construction can not reach the structural design requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prefabricated primary and secondary roof beam connected node in order to overcome the defect that above-mentioned prior art exists, to the condition that girder bottom elevation is higher than secondary roof beam bottom elevation, can realize conveniently, reliably that the primary and secondary roof beam is connected.

The purpose of the utility model can be realized through the following technical scheme: the utility model provides a prefabricated primary and secondary beam connected node, hangs muscle portion including the segmentation, muscle portion is hung to the segmentation includes that the U type hangs the muscle section, the both ends that the muscle section was hung to the U type are connected with the L type respectively and hang the muscle section, L type hangs muscle section and U type and hangs the muscle section and all be located the post-cast breach of precast concrete girder, the precast concrete secondary beam has been placed in the recess that the muscle section was hung to the U type.

Furthermore, the L-shaped hanging rib sections are positioned in the girder superposed layers on two sides of the precast concrete girder post-pouring notch.

Furthermore, one end of the L-shaped hanging rib section is lapped on the top of the precast concrete main beam.

Further, the one end of L type hangs the fixed overlap joint in the top gluten below of precast concrete girder of muscle section.

Further, the width of the bottom of the groove of the U-shaped hanging rib section is larger than or equal to the width of the precast concrete secondary beam.

Further, the L-shaped hanging rib section is positioned on the inner side of the opening of the U-shaped hanging rib section.

Furthermore, the two ends of the U-shaped hanging rib section are connected with the L-shaped hanging rib section in a welding mode.

Further, the number of the segmented sling portions is 2.

Further, the U-shaped sling bar section is made of Q235B steel.

Further, the L-shaped sling bar section is made of Q235B steel.

The utility model discloses a concrete work progress does: the construction site firstly hoists the prefabricated secondary beam, the U-shaped hanging rib section is inserted from the lower part of the prefabricated secondary beam to enable the prefabricated secondary beam to be placed in the U-shaped hanging rib section, then the prefabricated main beam is hoisted, the L-shaped hanging rib sections are respectively placed in main beam superposed layers on two sides of a rear pouring gap of the prefabricated main beam, the U-shaped hanging rib section and the L-shaped hanging rib sections are both positioned in the rear pouring gap of the prefabricated main beam, and finally the U-shaped hanging rib section and the L-shaped hanging rib sections are mutually welded to form an integral segmented hanging rib part, so that the connection of the prefabricated main beam and the prefabricated secondary beam is realized.

Compared with the prior art, be higher than the condition of prefabricated secondary bottom of the beams elevation to prefabricated girder bottom elevation, the utility model discloses a set up segmentation and hang muscle portion, utilize U type to hang the segmentation design of muscle section and L type to hang muscle section and L type and hang the muscle section and all place in the post-cast breach of prefabricated girder with U type, make prefabricated girder and prefabricated secondary can be connected after hoist and mount smoothly, have construction convenience, safe and reliable's advantage, solved because of the existence of prefabricated girder hanging the muscle and the problem of unable hoist and mount, in addition, the utility model provides a segmentation hangs muscle portion and compares in original pre-buried integral type hanging the muscle, and easily processing more can effectively improve the efficiency of construction.

Drawings

FIG. 1 is a schematic view of the installation effect of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural view of a segmented rebar portion;

wherein: 1. u type hangs muscle section, 2, L type hangs muscle section, 3, precast concrete girder, 4, precast concrete secondary beam, 5, top gluten.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example (b):

as shown in fig. 1-2, a prefabricated primary and secondary beam connected node, includes segmentation hang muscle portion, as shown in fig. 3, segmentation hang muscle portion and include U type hang muscle section 1, and the both ends of U type hang muscle section 1 are connected with L type respectively and hang muscle section 2, and L type hangs muscle section 2 and is located U type and hangs muscle section 1's opening inboard, and L type hangs muscle section 2 and U type and hangs muscle section 1 and all is located precast concrete girder 3's post-cast breach, has placed precast concrete secondary beam 4 in the recess of U type hang muscle section 1.

Specifically, the L-shaped hanging rib section 2 is located in the girder superposed layer on the two sides of the post-cast notch of the precast concrete girder 3, and one end of the L-shaped hanging rib section 2 is fixedly lapped below the top gluten 5 of the precast concrete girder 3.

In order to ensure that the precast concrete secondary beam 4 can be smoothly placed in the groove of the U-shaped hanging rib section 1 during subsequent installation, the width of the bottom of the groove of the U-shaped hanging rib section 1 is larger than or equal to that of the precast concrete secondary beam 4.

In this embodiment, the two ends of the U-shaped hanging rib section 1 are connected with the L-shaped hanging rib section 2 through a welding mode (as shown in fig. 1 and the enlarged part of fig. 2), the number of the segmental hanging rib parts is 2, and the U-shaped hanging rib section and the L-shaped hanging rib section are made of Q235B steel.

When the prefabricated concrete secondary beam is installed, the prefabricated concrete secondary beam is hoisted firstly on a construction site, then the prefabricated concrete main beam is hoisted, after the primary beam and the secondary beam are hoisted, the segmented hoisting rib parts are placed at the gap of the main beam and then welded, the U-shaped hoisting rib sections are upwards inserted from the lower part of the prefabricated concrete secondary beam, the two L-shaped hoisting rib sections are respectively placed in the main beam superposed layers at two sides of the post-cast gap of the prefabricated concrete main beam and then are lapped with the U-shaped hoisting rib sections and then welded into a whole, and finally, the gap is cast after the prefabricated concrete main beam is cast with concrete. The utility model discloses can solve the hoist and mount implementation problem of prefabricated primary and secondary roof beam, have easy operation, advantage that the efficiency of construction is high simultaneously.

Claims

1. The utility model provides a prefabricated primary and secondary beam connected node, its characterized in that hangs muscle portion including the segmentation, muscle portion is hung including the U type to the segmentation hangs muscle section (1), the both ends that the muscle section (1) was hung to the U type are connected with L type respectively and hang muscle section (2), the L type hangs muscle section (2) and U type and hangs muscle section (1) and all is located the back gate gap of precast concrete girder (3), precast concrete secondary beam (4) have been placed in the recess of U type string muscle section (1).

2. The prefabricated primary and secondary beam connecting node according to claim 1, wherein the L-shaped hanging rib sections (2) are positioned in the main beam overlapping layers on two sides of the post-cast notch of the prefabricated concrete main beam (3).

3. The prefabricated primary and secondary beam connecting node as claimed in claim 1, wherein one end of said L-shaped hanger bar section (2) is lapped on top of the prefabricated concrete primary beam (3).

4. The prefabricated primary and secondary beam connecting node as claimed in claim 3, wherein one end of the L-shaped hanging rib section (2) is fixedly lapped below the top gluten (5) of the prefabricated concrete primary beam (3).

5. A prefabricated primary and secondary beam connecting node according to claim 1, wherein the width of the bottom of the groove of the U-shaped lifting rib section (1) is greater than or equal to the width of the prefabricated concrete secondary beam (4).

6. A prefabricated primary and secondary beam connecting node according to claim 1, characterized in that said L-shaped hanger bar section (2) is located inside the opening of the U-shaped hanger bar section (1).

7. The prefabricated primary and secondary beam connecting joint as claimed in claim 1, wherein two ends of the U-shaped hanging rib section (1) are connected with the L-shaped hanging rib section (2) in a welding manner.

8. A prefabricated primary and secondary beam connection node as claimed in claim 1, wherein the number of said segmental lifting rib parts is 2.

9. A prefabricated primary and secondary beam connection node as claimed in claim 1, wherein said U-shaped sling section (1) is made of Q235B steel.

10. A prefabricated primary and secondary beam connection node as claimed in claim 1, wherein said L-shaped sling bar section (2) is made of Q235B steel.