CN213143656U - Be applied to combination ladder roof beam of steel construction precast concrete stair - Google Patents
Be applied to combination ladder roof beam of steel construction precast concrete stair Download PDFInfo
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- CN213143656U CN213143656U CN202021859406.2U CN202021859406U CN213143656U CN 213143656 U CN213143656 U CN 213143656U CN 202021859406 U CN202021859406 U CN 202021859406U CN 213143656 U CN213143656 U CN 213143656U
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- precast concrete
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- ladder roof
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Abstract
The utility model belongs to the technical field of steel construction engineering and specifically relates to a be applied to combination ladder roof beam of steel construction precast concrete stair, including ladder roof beam body, the floor board below is arranged in to ladder roof beam body, and the floor board passes through ladder roof beam body to be connected with the precast concrete stair, and one side of ladder roof beam body is provided with the steel sheet respectively, is provided with connecting bolt on the steel sheet, and the last reservation of precast concrete body has the through-hole with connecting bolt complex, and ladder roof beam body passes through connecting bolt and is connected with the precast concrete stair. The utility model discloses direct on-site installation, easy operation shortens construction period.
Description
Technical Field
The utility model belongs to the technical field of steel construction engineering and specifically relates to a be applied to combination ladder roof beam of steel construction precast concrete stair.
Background
Steel construction building is more and more wide in current market application, and the steel construction itself possess advantages such as dead weight is light, the time limit for a project is short, environmental pollution is little, but stair in the steel construction always is a point that can promote and optimize, and the steel ladder does not have the problem totally in the security, but most of owner's demand is not only in safety now, and what more pay attention to under the prerequisite of guaranteeing safety is pleasing to the eye and practicality. The prefabricated concrete stair is a stair produced in a factory, is prefabricated in the factory and directly transported to the site for hoisting and mounting, and is widely accepted in the current market in the aspects of safety, attractiveness and the like. When traditional steel construction and precast concrete stair installation, a floor board below need make an installation terraced roof beam, and the half space of stair also need be connected with the support roof beam, then the terraced roof beam need make alone just can guarantee that precast concrete stair normally installs the practicality, consequently need the installation of at least twice terraced roof beam, and installation steps is loaded down with trivial details moreover, and the period of a project is long, influences the time limit progress.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides an installation is simple, practices thrift the time limit for a project's combination ladder roof beam of being applied to steel construction precast concrete stair.
The utility model adopts the following technical scheme:
the utility model provides a be applied to combination ladder roof beam of steel construction precast concrete stair, includes the ladder roof beam body, and floor board below is arranged in to the ladder roof beam body, and the floor board passes through the ladder roof beam body to be connected with the precast concrete stair, and one side of ladder roof beam body is provided with the steel sheet respectively, is provided with connecting bolt on the steel sheet, and the precast concrete body is last to be reserved have with connecting bolt complex through-hole, and the ladder roof beam body passes through connecting bolt and is connected with the precast concrete stair.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a mill's prefab, direct at the on-the-spot installation, easy operation, moreover the utility model discloses only need once at the on-the-spot installation, the installation is simple, shortens construction period.
Further, the utility model discloses a following preferred scheme:
the ladder roof beam body is H shaped steel, corresponds respectively on the last flange board of ladder roof beam body and the lower flange board and welds steel sheet and lower steel sheet, goes up vertical welding on the steel sheet and has the bolt.
Stiffening ribs are arranged between the upper steel plate and the lower steel plate at equal intervals.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a view from the 1-1 direction of FIG. 1;
in the figure: a floor panel 1; prefabricating a concrete stair 2; a through hole 3; a ladder beam body 4; an upper flange plate 41; the lower flange plate 42; a web 43; an upper steel plate 5; a lower steel plate 6; a stiffener 7; a connecting bolt 8; a backing plate 9.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
A combined ladder beam applied to a steel structure precast concrete stair comprises a ladder beam body 4, wherein the ladder beam body 4 is arranged at the end part of the connecting end of a floor plate 1 and a precast concrete stair 2 and is arranged at the bottom end of the floor plate 1; ladder beam body 4 is made for H shaped steel, the right side horizontal welding of the last flange board 41 of ladder beam body 4 has steel sheet 5, the right side horizontal welding of lower flange board 42 has lower steel sheet 6 with last steel sheet 5 symmetry setting, go up steel sheet 5, between lower steel sheet 6 and the web 43 of ladder beam body 4, the welding has stiffening rib 7, in order to make ladder beam body 4 whole more firm, on ladder beam body 4 is left, also weld stiffening rib 7 between the lower flange board, the ladder beam body 4 is left, the position of the stiffening rib 7 of the right side both sides corresponds the setting.
The stiffening ribs 7 are welded at equal intervals along the length direction of the ladder beam body 4, and the interval between two adjacent stiffening ribs 7 is determined according to the total length of the ladder beam body 4. A connecting bolt 8 is vertically and fixedly welded at the top of the upper steel plate 5 (the head of the connecting bolt 8 is arranged at the upper part, and the bottom end of the screw rod is welded with the upper steel plate 5).
A through hole 3 is reserved on a platform where the precast concrete stairs 2 are connected with the floor plate 1, when the ladder beam body 4 is installed, the connecting bolt 8 on the upper steel plate 5 is arranged in the through hole 3, a certain gap is reserved between the connecting bolt 8 and the inner wall of the through hole 3, and two ends of the ladder beam body 4 are respectively welded with the steel structure support beam.
The length of the ladder beam body 4 is determined according to the width of the actual floor plate 1, when the ladder beam body 4 is fixed, the positions of the connecting bolts 8 are aligned with the positions of the through holes 3 on the precast concrete stairs 2, then, the two ends of the ladder beam body 4 are respectively welded and fixed with the supporting beams at the two sides of the floor slab 1, meanwhile, the connecting bolts 8 are ensured to be arranged in the through holes 3, after the ladder beam body 4 is integrally installed, the reserved through holes 3 need to be sealed from the upper part of the precast concrete stair 2, when the through holes are sealed, a round backing plate 9 is arranged on the top of the connecting bolt 8, the diameter of the backing plate 9 is the same as the inner diameter of the prepared hole, then, mortar is adopted to block the upper part of the base plate 9, and blocking is not carried out below the base plate 9, so that a movable end is formed between the connecting bolt 8 and the base plate 9, and the buffer effect can be achieved when the whole building is impacted by earthquake or other external force.
The utility model provides a combination ladder roof beam and precast concrete stair 2 are whole for the prefab of mill, and the mill production is accomplished the back, directly transports the job site and installs, easy operation, only needs the fixed welding of a supporting beam with the both ends of ladder roof beam body 4 and floor board 1 both sides during this combination ladder roof beam installation moreover, and the construction period has been practiced thrift to upper and lower steel sheet both ends all need not install, has fully embodied the advantage of assembled.
The above is only the concrete embodiments of the present invention, but the protection of the present invention is not limited to this, and all the equivalent changes or replacements proposed to the technical features of the present technical solution, which can be considered by those skilled in the art, are included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a be applied to combination ladder roof beam of steel construction precast concrete stair, includes the ladder roof beam body, the floor board below is arranged in to the ladder roof beam body, and the floor board passes through the ladder roof beam body to be connected its characterized in that with the precast concrete stair: one side of ladder roof beam body is provided with the steel sheet respectively, is provided with connecting bolt on the steel sheet, and precast concrete body is last to reserve have with connecting bolt complex through-hole, and ladder roof beam body passes through connecting bolt and is connected with the precast concrete stair.
2. The combined ladder beam applied to the steel structure precast concrete stairway, according to claim 1, is characterized in that: the ladder roof beam body is H shaped steel, corresponds respectively on the last flange board of ladder roof beam body and the lower flange board and welds steel sheet and lower steel sheet, goes up vertical welding on the steel sheet and has the bolt.
3. The combined ladder beam applied to the steel structure precast concrete stairway, according to claim 2, is characterized in that: stiffening ribs are arranged between the upper steel plate and the lower steel plate at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021859406.2U CN213143656U (en) | 2020-08-31 | 2020-08-31 | Be applied to combination ladder roof beam of steel construction precast concrete stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021859406.2U CN213143656U (en) | 2020-08-31 | 2020-08-31 | Be applied to combination ladder roof beam of steel construction precast concrete stair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213143656U true CN213143656U (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021859406.2U Active CN213143656U (en) | 2020-08-31 | 2020-08-31 | Be applied to combination ladder roof beam of steel construction precast concrete stair |
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| CN (1) | CN213143656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115749324A (en) * | 2022-12-12 | 2023-03-07 | 浙江东南网架股份有限公司 | Limiting sliding device for PC stairs and steel structure and construction method thereof |
-
2020
- 2020-08-31 CN CN202021859406.2U patent/CN213143656U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115749324A (en) * | 2022-12-12 | 2023-03-07 | 浙江东南网架股份有限公司 | Limiting sliding device for PC stairs and steel structure and construction method thereof |
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