CN219794459U - Assembled reinforced concrete stair upper end connection structure - Google Patents
Assembled reinforced concrete stair upper end connection structure Download PDFInfo
- Publication number
- CN219794459U CN219794459U CN202220988007.9U CN202220988007U CN219794459U CN 219794459 U CN219794459 U CN 219794459U CN 202220988007 U CN202220988007 U CN 202220988007U CN 219794459 U CN219794459 U CN 219794459U
- Authority
- CN
- China
- Prior art keywords
- stair
- reinforced concrete
- side edge
- tread
- concrete stair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 239000004567 concrete Substances 0.000 description 3
- 238000004904 shortening Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Steps, Ramps, And Handrails (AREA)
Abstract
The utility model discloses an upper end connecting structure of an assembled reinforced concrete stair, which comprises a stepping structure (1) and side edge parts (2) positioned on two sides of the stepping structure (1), wherein the side edge parts (2) and the stepping structure (1) extend to the length of the whole assembled reinforced concrete stair, and the lower surface of the side edge parts (2) is lower than the lower surface of the stepping structure (1); the highest level of the step structure (1) is supported on the corbel (4) of the stair tread (3), and a gap exists between the upper end of the side edge part (2) and the stair tread (3). The utility model changes the force transmission mode of the traditional assembled reinforced concrete stair, the load of the steps is transmitted to the side edge parts at two sides, the load of the side edge parts is transmitted to the highest step, and then the load is transmitted to the bracket of the stair beam through the highest step, thereby effectively solving the technical problem that the height of the stair beam is too high.
Description
Technical Field
The utility model relates to an upper end connecting structure of an assembled reinforced concrete stair, and belongs to the technical field of prefabricated stairs and assembled buildings.
Background
Currently, as fewer and fewer people are performing engineering construction on a building site, the fabricated building increasingly shows its superiority. Especially, the time and labor are consumed for manufacturing the site template, binding the reinforcing steel bars, pouring concrete and the like, and the assembled stair has obvious advantages.
But is limited by the hoisting capability and economy of the prefabricated parts, the dead weight of the plate type stair which is usually designed is large, and the hoisting is inconvenient; and the concrete material consumption is large, which is neither economical nor environment-friendly. The common beam type stairs or groove-shaped stairs have the problem of connection between the side beams or the side edges and the stair beams, so that the height of the stair beams is large, and the building functions are difficult to use.
The existing connection modes of the prefabricated stairway and the stair girder mainly comprise the following two modes.
One such connection is shown in fig. 1-2, where the load of the step structure is transferred to the side rails of the stairs, and then from the side rails to the brackets of the stair beams, where the stair beams form the highest step of the stairs (facilitating the shortening of the length of the stairs). The defect is that the height of the stair ladder beam is very high, which affects the space use of the building.
Another connection is shown in fig. 1, 3 and 4, wherein the load of the stepping structure is transferred to the stair side beam and then transferred to the bracket of the stair beam by the stair side beam. In order to reduce the height of the stair ladder beam, the step structure is added with a step. As can be seen from the section 1-1 of fig. 3, the uppermost step is flush with the upper surface of the landing plate (stair tread). The mode increases the stair span, and has great influence on reinforcement, precast concrete quantity, structural cost and the like.
Disclosure of Invention
In order to optimize a force transmission mode and reduce the height of a stair ladder beam, the utility model provides an upper end connecting structure of an assembled reinforced concrete stair, which has the following specific technical scheme.
The upper end connecting structure of the assembled reinforced concrete stair comprises a step structure and side edge parts positioned at two sides of the step structure, wherein the side edge parts and the step structure extend to the length of the whole assembled reinforced concrete stair, and the lower surface of the side edge parts is lower than the lower surface of the step structure; the method is characterized in that:
the highest level of the structure of marking time is marked time and is supported on the bracket or the cantilever plate of stair ladder beam, the upper end of side portion with the stair ladder beam has the clearance.
By adopting the technical scheme, the force transmission mode of the traditional prefabricated staircase is changed, the load of the steps is transmitted to the side edge parts (also called as the stair side beams) on two sides, the load of the side edge parts is transmitted to the highest-level steps, and then the load is transmitted to the corbels of the stair ladder beams through the highest-level steps; the side edge part bears the load of the steps, and the upper end of the side edge part is connected with the highest step; the side edge part is not connected with the stair beam, and load transmission does not exist, and the side edge part is not connected with the stair beam, so that the technical problem that the height of the stair beam is too high can be effectively solved.
Further, the highest level of tread structure is lower than the upper surface of the stair tread. Thus, the stair tread corresponds to the step formed as the highest step, which is beneficial to shortening the length of the prefabricated stair. Of course, the highest level of the tread structure may also be flush with the upper surface of the stair tread.
Further, the thickness of the highest one of the steps of the step structure is larger than that of the other steps. Or stirrups are arranged in the highest primary step of the step structure (namely, the highest primary step is formed into a beam structure). This allows the highest level of tread structure to have sufficient strength to support the side portions of the fabricated reinforced concrete stairway.
Further, the cross section of the assembled reinforced concrete stair is inverted U-shaped. Inverted U-shape, i.e. channel-shaped, i.e. the prefabricated staircase is a channel-shaped staircase.
Further, the fabricated reinforced concrete stair is integrally cast and molded.
Further, the side edge part and the stepping structure of the assembled reinforced concrete stair are respectively prefabricated and formed.
Further, the lower surface of the stepping structure is an inclined surface or a stepped surface.
According to the utility model, the force transmission mode of the traditional prefabricated staircase is changed, the load of the steps is transmitted to the side edge parts (also called as the stair edge beams) on two sides, the load of the side edge parts is transmitted to the highest step, and then the load is transmitted to the corbels of the stair ladder beam through the highest step; the side edge part is not connected with the stair beam, and load transmission does not exist, and the side edge part is not connected with the stair beam, so that the technical problem that the height of the stair beam is too high can be effectively solved.
Drawings
FIG. 1 is a top view of a prior art prefabricated staircase;
FIG. 2 is a cross-sectional view taken along line 1-1 of FIG. 1 (first attachment means);
FIG. 3 is a cross-sectional view taken along line 1-1 of FIG. 1 (second attachment means);
FIG. 4 is a cross-sectional view taken along line 2-2 of FIG. 1 (second attachment means);
FIG. 5 is a top view of the connection of the fabricated reinforced concrete stairway of the present utility model;
FIG. 6 is a cross-sectional view taken along section 1-1 of FIG. 5;
FIG. 7 is a cross-sectional view taken along section 2-2 of FIG. 5;
fig. 8 is a cross-sectional view of section 3-3 of fig. 5.
In the figure: the pedal structure 1, the side edge part 2, the stair tread 3 and the bracket 4.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
Referring to fig. 5 to 8, the fabricated reinforced concrete stairway comprises a tread structure 1 and side portions 2 located at both sides of the tread structure 1, the side portions 2 and the tread structure 1 each extending to the entire length of the channel-shaped stairway, the lower surface of the side portions 2 being lower than the lower surface of the tread structure 1; the cross section of the assembled reinforced concrete stair is in an inverted U shape. The lower surface of the stepping structure 1 can be an inclined surface or a stepped surface. When the factory prefabricates and produces, through whole ligature reinforcing bar, build the template, whole prefabricated staircase integrated casting shaping.
Preferably, the side portions 2 have a height greater than the thickness of the side portions 2, which allows for a saving of concrete and steel, and which allows for a better stiffness of the side portions 2 with reduced dead weight.
The upper end connecting structure of the assembled reinforced concrete stair comprises the assembled reinforced concrete stair and the stair tread 3, wherein the highest step of the step structure 1 is supported on the bracket 4 or the cantilever plate of the stair tread 3, and a gap exists between the upper end of the side edge part 2 and the stair tread 3; the highest level of stepping of the stepping structure 1 is lower than the upper surface of the stair tread 3.
By adopting the technical scheme, the force transmission mode of the traditional prefabricated staircase is changed, the load of the steps is transmitted to the side edge parts (also called as the stair side beams) on two sides, the load of the side edge parts is transmitted to the highest-level steps, and then the load is transmitted to the corbels of the stair ladder beams through the highest-level steps; the side edge part bears the load of the steps, and the upper end of the side edge part is connected with the highest step; the side edge part is not connected with the stair beam, load transmission does not exist, and the side edge part is not connected with the stair beam, so that the technical problem that the height of the stair beam is too high can be effectively solved, and the length of the prefabricated stair is shortened.
The highest level of stepping structure 3 has a thickness greater than the thickness of the other levels of stepping (i.e., the highest level of stepping forms a thick plate). Or stirrups are arranged in the highest primary step of the step structure (namely, the highest primary step is formed into a beam structure). This allows the highest level of tread structure 1 to have sufficient strength to support the side portions 2 of the fabricated reinforced concrete stairway.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, and the embodiments of the present utility model and the features of the embodiments may be combined with each other without conflict. The present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the utility model and the scope of the appended claims, which are all within the scope of the utility model.
Claims (8)
1. The upper end connecting structure of the assembled reinforced concrete stair comprises a step structure (1) and side edge parts (2) positioned on two sides of the step structure (1), wherein the side edge parts (2) and the step structure (1) extend to the length of the whole assembled reinforced concrete stair, and the lower surface of the side edge parts (2) is lower than the lower surface of the step structure (1); the method is characterized in that:
the highest level of structure (1) of marking time is marked time and is supported on bracket (4) or the ram of stair ladder beam (3), the upper end of side portion (2) with stair ladder beam (3) has the clearance, side portion (2) with stair ladder beam (3) do not have the connection.
2. A fabricated reinforced concrete stair upper end connection structure according to claim 1, wherein the highest level of the tread structure (1) is lower than the upper surface of the stair tread (3) or the highest level of the tread structure (1) is flush with the upper surface of the stair tread (3).
3. The upper end connecting structure of the fabricated reinforced concrete stair according to claim 1, wherein the highest step of the step structure (1) has a thickness greater than that of the other steps.
4. The upper end connecting structure of the fabricated reinforced concrete stair according to claim 1, wherein stirrups are arranged in the highest step of the step structure (1).
5. The connection structure for the upper ends of the fabricated reinforced concrete stairways according to claim 1, wherein the fabricated reinforced concrete stairways have an inverted U-shaped cross section.
6. The connecting structure for the upper end of the fabricated reinforced concrete stair according to claim 1, wherein the fabricated reinforced concrete stair is integrally cast.
7. The upper end connecting structure of the fabricated reinforced concrete stair according to claim 1, wherein the side edge part (2) and the tread structure (1) of the fabricated reinforced concrete stair are prefabricated and molded respectively.
8. The upper end connecting structure of the fabricated reinforced concrete stair according to claim 1, wherein the lower surface of the tread structure (1) is an inclined surface or a stepped surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220988007.9U CN219794459U (en) | 2022-04-26 | 2022-04-26 | Assembled reinforced concrete stair upper end connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220988007.9U CN219794459U (en) | 2022-04-26 | 2022-04-26 | Assembled reinforced concrete stair upper end connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219794459U true CN219794459U (en) | 2023-10-03 |
Family
ID=88181674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220988007.9U Active CN219794459U (en) | 2022-04-26 | 2022-04-26 | Assembled reinforced concrete stair upper end connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219794459U (en) |
-
2022
- 2022-04-26 CN CN202220988007.9U patent/CN219794459U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201661021U (en) | Prefabricated reinforced concrete stair | |
| CN202865991U (en) | Assembled monolithic shear wall building structure | |
| CN108316466B (en) | Prefabricated bay window component, assembled bay window node structure and construction method thereof | |
| CN216109005U (en) | Support-free or few-support connection joint of full-prefabricated floor slab and superposed beam | |
| CN111118997A (en) | Prefabricated assembled type lane plate | |
| CN219794459U (en) | Assembled reinforced concrete stair upper end connection structure | |
| CN105696453A (en) | Steel-concrete composite beam | |
| CN111335530A (en) | Variable cross-section one-way hollow prefabricated slab for block building laminated slab | |
| CN214882958U (en) | Steel-concrete combined bridge deck poured by concrete beams in separate bins | |
| CN212926589U (en) | Assembly type formwork-dismantling-free structural body formwork and cast-in-place formwork-dismantling-free structural body | |
| CN210597875U (en) | Cross beam | |
| CN210947410U (en) | Prestressed recycled concrete hollow composite beam | |
| CN216865770U (en) | Prefabricated reinforced concrete groove-shaped stair and connecting structure thereof | |
| CN113073541A (en) | Combined capping beam suitable for continuous bridge deck construction, bridge and construction process | |
| CN210685226U (en) | Assembled UHPC stair | |
| CN111851804A (en) | Assembly type formwork-dismantling-free structural body formwork and cast-in-place formwork-dismantling-free structural body | |
| CN113152810A (en) | Light steel building bearing type superposed stair and construction method | |
| CN213087254U (en) | Precast beam type stair with prestress | |
| CN220414855U (en) | Plate type stair formwork structure | |
| CN219931451U (en) | Precast concrete stair section with bottom end beam arranged in step in invisible mode | |
| CN219491060U (en) | Prefabricated elevator foundation structure | |
| CN216641203U (en) | Precast beam type folded plate stair | |
| CN220035943U (en) | Large-span concrete arc-shaped stair | |
| CN214696526U (en) | Segmental prefabricated scissor type plate type stair structure | |
| CN215829741U (en) | Prefabricated dense rib plate with shelving cantilever head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |