CN214531606U - PC mill prefabricated staircase and girder steel connected node - Google Patents
PC mill prefabricated staircase and girder steel connected node Download PDFInfo
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- CN214531606U CN214531606U CN202120912493.1U CN202120912493U CN214531606U CN 214531606 U CN214531606 U CN 214531606U CN 202120912493 U CN202120912493 U CN 202120912493U CN 214531606 U CN214531606 U CN 214531606U
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Abstract
The utility model provides a connection node for connecting a PC factory prefabricated staircase and a steel beam, wherein the end part of the PC staircase is lapped at the top end of the upper flange of the steel beam and is connected with a floor cast-in-place concrete plate; and a pair of high-strength screw rods are subjected to plug welding on two sides of the top end of the upper flange of the steel beam and correspond to the lap joint of the steel beam and the PC stair, countersunk holes are formed in the PC stair according to the positions and the types of the high-strength screw rods, the high-strength screw rods are threaded in the countersunk holes in a penetrating mode, and the tops of the countersunk holes are leveled by cement mortar, so that the top end face of the tail end part of the PC stair is integrally leveled. The utility model discloses the construction is convenient, efficient, can adjust the error that produces when installing the PC stair.
Description
Technical Field
The utility model belongs to the technical field of steel construction building technology and specifically relates to a connected node that PC mill prefabricated staircase and girder steel are connected that says so.
Background
With the rapid development of steel structure technology, steel structures are widely applied to various building structure systems. In many, high-rise, often can touch the connection of PC factory prefabricated staircase and each layer girder steel, because of the PC stair is the steel member that is prefabricated in the mill, draw the job site hoist and mount, bring very big trouble for the scene when the installation is connected. The traditional method comprises the steps of manufacturing a stair template on site, binding stair reinforcing steel bars, pouring stair concrete and then disassembling the stair template, the method is uneconomical in site cost-type cost, the material cost and the labor cost are greatly increased, green construction, assembly type construction, modular construction and the like advocated by the nation are not responded, and the site installation error is difficult to adjust.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem to a certain extent at least. Therefore, the utility model provides a PC mill prefabricated staircase and girder steel connected's connected node, the construction is convenient, efficient, the error that produces when can adjusting installation PC stair.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a connected node that PC mill prefabricated staircase and girder steel are connected, its structural feature is:
the end part of the PC stair is lapped at the top end of the upper flange of the steel beam and is connected with the floor cast-in-place concrete plate;
and a pair of high-strength screw rods are subjected to plug welding on two sides of the top end of the upper flange of the steel beam and correspond to the lap joint of the steel beam and the PC stair, countersunk holes are formed in the PC stair according to the positions and the types of the high-strength screw rods, the high-strength screw rods are threaded in the countersunk holes in a penetrating mode, and the tops of the countersunk holes are leveled by cement mortar, so that the top end face of the tail end part of the PC stair is integrally leveled.
The utility model discloses a structural feature also lies in:
and paving a cement mortar leveling layer and a polytetrafluoroethylene flat plate on the top end of the upper flange of the steel beam from bottom to top corresponding to the part lapped with the PC stair.
The thickness of the polytetrafluoroethylene flat plate is 2 cm.
And a PE rod is arranged at the joint of the PC stair and the floor cast-in-place concrete slab, and is filled with polyphenyl and is injected with glue to form sealing.
The high-strength screw is an M16 high-strength screw.
Compared with the prior art, the utility model discloses beneficial effect embodies:
the utility model discloses the node treatment mode is simple, and the installation is simple and direct quick, and the installation degree of difficulty is low, with low costs, the operation flexibility is good, need not to make stair template, ligature stair reinforcing bar, pours stair concrete and operation such as form removal, effectively shortens construction cycle to the error that produces when installing the PC stair can be effectively adjusted.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 2;
FIG. 3 is a schematic view of the structure of a high-strength screw.
In the drawings, 1 steel beam; 2PC stairs; 3, a high-strength screw; 4, leveling a cement mortar leveling layer; 5, a polytetrafluoroethylene flat plate; 6 floors cast-in-place concrete slab.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 3, the connection node structure for connecting the PC factory prefabricated staircase and the steel beam according to the embodiment is as follows:
the end part of the PC stair is lapped at the top end of the upper flange of the steel beam and is connected with the floor cast-in-place concrete plate;
a pair of M16 high-strength screw rods are welded on two sides of the top end of the upper flange of the steel beam corresponding to the lap joint of the steel beam and the PC stair in a penetrating and plug welding mode, counter bores are formed in the PC stair according to the positions and the types of the M16 high-strength screw rods, M16 high-strength screw rods penetrate through the counter bores in a threaded mode, the tops of the counter bores are leveled by cement mortar, and the top end face of the tail end portion of the PC stair is made to be flat integrally.
In specific implementation, the corresponding structural arrangement also includes:
and paving a cement mortar leveling layer and a polytetrafluoroethylene flat plate on the top end of the upper flange of the steel beam from bottom to top corresponding to the part lapped with the PC stair.
The thickness of the polytetrafluoroethylene flat plate is 2 cm. And the cement mortar leveling layer and the top of the counter sink are leveled by adopting 1:1 cement mortar.
And a PE rod is arranged at the joint of the PC stair and the floor cast-in-place concrete slab, and is filled with polyphenyl and glue to form sealing.
The installation mode is as follows:
a. installing a steel beam on site;
b. welding M16 high-strength screws (including 1 screw, nut and gasket) on the upper flange of the steel beam by adopting perforation plug welding;
c. sequentially arranging a cement mortar leveling layer and a polytetrafluoroethylene flat plate on the upper flange of the steel beam layer by layer;
d. the position of a counter bore of the PC stair is determined through measurement on site, errors generated during installation of the PC stair are eliminated, the counter bore of the PC stair is aligned with an M16 high-strength screw welded on a steel beam, a high-strength bolt is screwed, and then cement mortar is used for leveling the top of the counter bore.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (5)
1. The utility model provides a connected node that PC mill prefabricated staircase and girder steel are connected, characterized by:
the end part of the PC stair is lapped at the top end of the upper flange of the steel beam and is connected with the floor cast-in-place concrete plate;
and a pair of high-strength screw rods are subjected to plug welding on two sides of the top end of the upper flange of the steel beam and correspond to the lap joint of the steel beam and the PC stair, countersunk holes are formed in the PC stair according to the positions and the types of the high-strength screw rods, the high-strength screw rods are threaded in the countersunk holes in a penetrating mode, and the tops of the countersunk holes are leveled by cement mortar, so that the top end face of the tail end part of the PC stair is integrally leveled.
2. The PC factory prefabricated staircase and steel beam connection joint as claimed in claim 1, wherein: and paving a cement mortar leveling layer and a polytetrafluoroethylene flat plate on the top end of the upper flange of the steel beam from bottom to top corresponding to the part lapped with the PC stair.
3. The PC factory prefabricated staircase and steel beam connection joint as claimed in claim 2, wherein: the thickness of the polytetrafluoroethylene flat plate is 2 cm.
4. The PC factory prefabricated staircase and steel beam connection joint as claimed in claim 1, wherein: and a PE rod is arranged at the joint of the PC stair and the floor cast-in-place concrete slab, and is filled with polyphenyl and is injected with glue to form sealing.
5. The PC factory prefabricated staircase and steel beam connection joint as claimed in claim 1, wherein: the high-strength screw is an M16 high-strength screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120912493.1U CN214531606U (en) | 2021-04-29 | 2021-04-29 | PC mill prefabricated staircase and girder steel connected node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120912493.1U CN214531606U (en) | 2021-04-29 | 2021-04-29 | PC mill prefabricated staircase and girder steel connected node |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214531606U true CN214531606U (en) | 2021-10-29 |
Family
ID=78278048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120912493.1U Active CN214531606U (en) | 2021-04-29 | 2021-04-29 | PC mill prefabricated staircase and girder steel connected node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214531606U (en) |
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2021
- 2021-04-29 CN CN202120912493.1U patent/CN214531606U/en active Active
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