CN104929363A - Cast-in-place concrete slab-type stairway sliding support and formwork thereof - Google Patents
Cast-in-place concrete slab-type stairway sliding support and formwork thereof Download PDFInfo
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- CN104929363A CN104929363A CN201510395717.5A CN201510395717A CN104929363A CN 104929363 A CN104929363 A CN 104929363A CN 201510395717 A CN201510395717 A CN 201510395717A CN 104929363 A CN104929363 A CN 104929363A
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Abstract
The invention provides a cast-in-place concrete slab-type stairway sliding support and a formwork thereof. The formwork of the sliding support comprises a foam plate, an upper plain round bar and a lower plain round bar. The foam plate is of a dual-layer structure, wherein the upper layer and the lower layer are provided with an upper strip-shaped circular groove and a lower strip-shaped circular groove inside the horizontal plane respectively, and the included angle between the extending direction of the upper strip-shaped circular groove and the extending direction of the lower strip-shaped circular groove is an acute angle or a right angle. The upper plain round bar and the lower plain round bar are inserted into the upper strip-shaped circular groove and the lower strip-shaped circular groove respectively. The upper plain round bar makes contact with the lower plain round bar. According to the cast-in-place concrete slab-type stairway sliding support, formwork erection and casting can be performed on the lower-layer body structure and a stairway, the construction time is saved, meanwhile, it can be ensured that the lower layer body structure and the stairway are separated, the unfavorable effect generated by the body structure on the stairway is avoided, and meanwhile the problem that sliding resistance is large due to the fact that an existing sliding support is in a face-to-face contact mode is solved.
Description
Technical field
The present invention relates to the board-like stair sliding support of a kind of cast-in-situ concrete and template thereof, belong to building engineering field.
Background technology
Staircase during earthquake in building is important emergency escape vertical passageway.And by the cast-in-situ steel reinforced concrete stair of conventional construction mode owing to participating in lateral resisting work as inclined member, diagonal bracing effect is played in meeting in frame construction, under geological process, the internal force distribution of agent structure is had an impact, often cause stair and surrounding member to absorb excessive seismic forces to destroy at first, and as important passway for escaping stair once destroy, will give the people's lives and property bring massive losses safely.In order to reduce the impact of stair on agent structure rigidity, the normal method adopting the horizontal restraint discharged between stair and agent structure in current engineering, namely adopt sliding support, under geological process, make stair can occurred level slippage, horizontal force can not be transmitted at interlayer.Existing atlas " concrete structure construction plan integral drawing method cartographic convention and constructional detail (the board-like stair of cast-in-situ concrete) " (11G101-2) also provides the suggestion way of sliding support.
But current sliding support is in order to ensure that gangboard and substructure depart from, comparatively bother when constructing, must etc. the concreting maintenance of substructure good after, could install built-in fitting and the template of stair, concrete construction stair, the cycle is longer, and be difficult to ensure that contact surface is very smooth for the steel plate that slides or polyfluortetraethylene plate, the mode that face contacts with face causes slip resistance comparatively large, and sliding effect is difficult to ensure, and also can be subject to the resistance of building coats when stair slide.In addition, as the slide plane of long rectangle, inevitable be far longer than short direction at the resistance of rectangular upward sliding, when causing actual seismic, stair can only slide in a single direction.
Summary of the invention
The object of the present invention is to provide the board-like stair sliding support of a kind of cast-in-situ concrete and template thereof, long to solve the stair sliding support pouring construction cycle existed in prior art, the problem that stair slip resistance on sliding support is large.
For solving the problems of the technologies described above, technical scheme provided by the invention is as follows:
A kind of cast-in-situ concrete board-like stair sliding support template, comprise cystosepiment, top plain bar and bottom plain bar, described cystosepiment is pair of lamina structure, on it, the lower two-layer middle top bar shaped circular groove and bottom bar shaped circular groove that angle between bearing of trend is acute angle or right angle that have in horizontal plane respectively, described top plain bar inserts in described top bar shaped circular groove, described bottom plain bar inserts in described bottom bar shaped circular groove, described top plain bar contacts with described bottom plain bar and arranges, the thickness of described cystosepiment equals the diameter sum of described top plain bar and bottom plain bar, length and width are consistent with stair basal sliding section bottom surface length and width.
Preferably, described top bar shaped circular groove is 1, and described bottom bar shaped circular groove is 2 that parallel interval is arranged, and top plain bar is 1, and bottom plain bar is 2.
Preferably, described cystosepiment is polystyrene foam plate, polytetrafluoroethylene (PTFE) cystosepiment, phenolic foam board or polyethylene foam sheet.
Preferably, described top plain bar and bottom plain bar adopt HPB300 material.
The board-like stair sliding support of a kind of cast-in-situ concrete, comprise pre-embedded steel slab and separation layer bottom top plain bar, bottom plain bar, lower seat pre-embedded steel slab, bench, lower seat pre-embedded steel slab is positioned at below the plain bar of bottom, top plain bar level is shelved on the plain bar of bottom, angle is between the two acute angle or right angle, bottom bench, pre-embedded steel slab is placed on the plain bar of top, and the gap bottom lower seat pre-embedded steel slab and bench between pre-embedded steel slab is filled with filler and formed separation layer.
Preferably, described top plain bar is 1, and bottom plain bar is 2.
Preferably, the board-like stair sliding support of described cast-in-situ concrete also comprises lower floor's agent structure and bench, described lower seat pre-embedded steel slab together with lower floor agent structure is cast in, together with bottom described bench, pre-embedded steel slab is cast in bench.
Preferably, described inserts is cystosepiment, Bituminous hemp fiber.
Preferably, described inserts is polystyrene foam plate, polytetrafluoroethylene (PTFE) cystosepiment, phenolic foam board or polyethylene foam sheet.
Preferably, described top plain bar and bottom plain bar adopt HPB300 material.
Compared with prior art, technical advantage of the present invention is:
Cast-in-situ concrete provided by the invention board-like stair sliding support template, make lower floor's agent structure can together with stair formwork, build together, save the engineering time, can ensure that lower floor's agent structure and stair are separated simultaneously, when avoiding earthquake, stair produce detrimental effect to agent structure, also solve the problem that slip resistance that the face of sliding support in prior art and the face way of contact cause is large simultaneously, sliding support of the present invention is point and point cantact, change sliding friction into rolling friction, can ensure that stair can be free to slide with very little resistance is two-way on sliding support when earthquake, and this sliding support template is cheap, easy for installation.
The board-like stair sliding support of cast-in-situ concrete provided by the invention, stair and lower floor's agent structure is made to be separated by separation layer, contact by means of only the contact point of bottom plain bar with top plain bar, and change rolling friction into by sliding friction, slip resistance is very little, can be free to slide two-way, and the resistance being subject to building coats when sliding can be avoided.
Accompanying drawing explanation
Fig. 1 is the cast-in-situ concrete board-like stair sliding support template front view that the embodiment of the present invention provides;
Fig. 2 is the local A-A sectional view of Fig. 1;
Fig. 3 is the local B-B sectional view of Fig. 1;
Fig. 4 is the cast-in-situ concrete board-like stair sliding support front view that the embodiment of the present invention provides;
Fig. 5 is the partial enlarged drawing of Fig. 4;
Fig. 6 is the local A-A sectional view of Fig. 5;
Fig. 7 is the local B-B sectional view of Fig. 5;
Fig. 8 is the Local C-C sectional view of Fig. 5.
Wherein, 1-cystosepiment; 2-top bar shaped circular groove; 3-bottom bar shaped circular groove; 4-top plain bar; 5-bottom plain bar; 6-lower seat pre-embedded steel slab; Pre-embedded steel slab bottom 7-bench; 8-lower floor agent structure; 9-bench; 10-dowel; 11-separation layer.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the cast-in-situ concrete board-like stair sliding support template that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
As shown in Figure 1, a kind of cast-in-situ concrete board-like stair sliding support template, comprise cystosepiment 1, top plain bar 4 and bottom plain bar 5, cystosepiment 1 is pair of lamina structure, on it, the lower two-layer middle top bar shaped circular groove 2 and bottom bar shaped circular groove 3 that angle between bearing of trend is acute angle or right angle that have in horizontal plane respectively, described top plain bar 4 inserts in described top bar shaped circular groove 2, described bottom plain bar 5 inserts in described bottom bar shaped circular groove 3, described top plain bar 4 contacts with described bottom plain bar 5 and arranges, the thickness of described cystosepiment 1 equals the diameter sum of described top plain bar 4 and bottom plain bar 5, length and width are consistent with stair basal sliding section bottom surface length and width.
Preferably, described top bar shaped circular groove is 1, and described bottom bar shaped circular groove is 2 that parallel interval is arranged, and top plain bar is 1, and bottom plain bar is 2.Top plain bar may play a role because construction deviation causes reality to be also 1 more than 2, and therefore the effect of 1 is better; If lower rebar only has 1 bottom can be caused unstable, more than 3 actual play a role also only have 2, therefore bottom plain bar adopts the best results of 2.During construction, by the plate face position of this sliding support model sheetinstallat in lower floor's agent structure 8, then just lower floor's agent structure 8 can be carried out concreting together with bench 9.After concrete coagulation, bench 9 and lower floor's agent structure 8 are just separated by cystosepiment 1, and top plain bar 2 only exists two point cantact with bottom plain bar 3, can realize bench 9 and slide smoothly in the two directions in lower floor's agent structure 8.
Preferably, there is definite shape under the normal temperature such as described cystosepiment 1 is polystyrene foam plate, polytetrafluoroethylene (PTFE) cystosepiment, phenolic foam board or polyethylene foam sheet, time stressed, hold again yielding cystosepiment.
Preferably, described top plain bar 2 and bottom plain bar 3 pairs of materials do not have particular/special requirement, can be HPB300 material.
Present invention also offers the board-like stair sliding support of a kind of cast-in-situ concrete, as shown in Figure 4, comprise top plain bar 4, bottom plain bar 5, lower seat pre-embedded steel slab 6, pre-embedded steel slab 7 and separation layer 11 bottom bench, lower seat pre-embedded steel slab 6 is positioned at below bottom plain bar 5, top plain bar 4 level is shelved on bottom plain bar 5, angle is between the two acute angle or right angle, bottom bench, pre-embedded steel slab 7 is placed on top plain bar 4, gap bottom lower seat pre-embedded steel slab 6 and bench between pre-embedded steel slab 7 is filled with filler and is formed separation layer 11.
Preferably, described top plain bar is 1, and bottom plain bar is 2.Top plain bar may play a role because construction deviation causes reality to be also 1 more than 2, and therefore the effect of 1 is better; If lower rebar only has 1 bottom can be caused unstable, more than 3 actual play a role also only have 2, therefore bottom plain bar adopts the best results of 2.
Preferably, the board-like stair sliding support of described cast-in-situ concrete also comprises lower floor's agent structure 8 and bench 9, together with lower seat pre-embedded steel slab 6 is cast in lower floor agent structure 8, together with bottom described bench, pre-embedded steel slab 7 is cast in bench 9.During construction, when building lower floor's agent structure 8, first be embedded into lower seat pre-embedded steel slab 6, after substructure concrete coagulation, then bottom plain bar 3 is shelved at upper surface, when next carrying out stair formwork erecting, top plain bar 2 is shelved on bottom plain bar 3 with vertical direction, bottom bench, pre-embedded steel slab 7 is placed on top plain bar 2, then adopt inserts to be filled the gap bottom lower seat pre-embedded steel slab 6 and bench between pre-embedded steel slab 7 and form separation layer 11, using separation layer as the bottom template of bench 9, separate bench 9 and lower floor's agent structure 8, finally build bench concrete, pre-embedded steel slab bottom bench 7 is built into bench 9.
Preferably, described inserts can be the filler such as cystosepiment or Bituminous hemp fiber, only otherwise the gap of exposing between stair.
Preferably, there is definite shape under the normal temperature such as described inserts is polystyrene foam plate, polytetrafluoroethylene (PTFE) cystosepiment, phenolic foam board or polyethylene foam sheet, time stressed, hold again yielding cystosepiment.
Preferably, described top plain bar 2 and bottom plain bar 3 pairs of materials do not have particular/special requirement, can be HPB300 material.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (10)
1. a cast-in-situ concrete board-like stair sliding support template, it is characterized in that, comprise cystosepiment, top plain bar and bottom plain bar, described cystosepiment is pair of lamina structure, on it, the lower two-layer middle top bar shaped circular groove and bottom bar shaped circular groove that angle between bearing of trend is acute angle or right angle that have in horizontal plane respectively, described top plain bar inserts in described top bar shaped circular groove, described bottom plain bar inserts in described bottom bar shaped circular groove, described top plain bar contacts with described bottom plain bar and arranges, the thickness of described cystosepiment equals the diameter sum of described top plain bar and bottom plain bar, length and width are consistent with stair basal sliding section bottom surface length and width.
2. cast-in-situ concrete according to claim 1 board-like stair sliding support template, is characterized in that, described top bar shaped circular groove is 1, and described bottom bar shaped circular groove is 2 that parallel interval is arranged, and top plain bar is 1, and bottom plain bar is 2.
3. cast-in-situ concrete according to claim 1 board-like stair sliding support template, is characterized in that, described cystosepiment is polystyrene foam plate, polytetrafluoroethylene (PTFE) cystosepiment, phenolic foam board or polyethylene foam sheet.
4. the board-like stair sliding support of the cast-in-situ concrete according to any one of claim 1-3 template, is characterized in that, described top plain bar and bottom plain bar adopt HPB300 material.
5. the board-like stair sliding support of cast-in-situ concrete, it is characterized in that, comprise pre-embedded steel slab and separation layer bottom top plain bar, bottom plain bar, lower seat pre-embedded steel slab, bench, lower seat pre-embedded steel slab is positioned at below the plain bar of bottom, top plain bar level is shelved on the plain bar of bottom, angle is between the two acute angle or right angle, bottom bench, pre-embedded steel slab is placed on the plain bar of top, and the gap bottom lower seat pre-embedded steel slab and bench between pre-embedded steel slab is filled with filler and formed separation layer.
6. the board-like stair sliding support of cast-in-situ concrete according to claim 5, is characterized in that, described top plain bar is 1, and bottom plain bar is 2.
7. the board-like stair sliding support of cast-in-situ concrete according to claim 5, it is characterized in that, also comprise lower floor's agent structure and bench, described lower seat pre-embedded steel slab together with lower floor agent structure is cast in, together with bottom described bench, pre-embedded steel slab is cast in bench.
8. the board-like stair sliding support of cast-in-situ concrete according to claim 5, is characterized in that, described inserts is cystosepiment or Bituminous hemp fiber.
9. the board-like stair sliding support of cast-in-situ concrete according to claim 8, is characterized in that, described inserts is polystyrene foam plate, polytetrafluoroethylene (PTFE) cystosepiment, phenolic foam board or polyethylene foam sheet.
10. the board-like stair sliding support of the cast-in-situ concrete according to any one of claim 5-9, is characterized in that, described top plain bar and bottom plain bar adopt HPB300 material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510395717.5A CN104929363B (en) | 2015-07-07 | 2015-07-07 | A kind of board-like stair sliding support of cast-in-place concrete and its template |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510395717.5A CN104929363B (en) | 2015-07-07 | 2015-07-07 | A kind of board-like stair sliding support of cast-in-place concrete and its template |
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| Publication Number | Publication Date |
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| CN104929363A true CN104929363A (en) | 2015-09-23 |
| CN104929363B CN104929363B (en) | 2017-03-08 |
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| CN201510395717.5A Active CN104929363B (en) | 2015-07-07 | 2015-07-07 | A kind of board-like stair sliding support of cast-in-place concrete and its template |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457433A (en) * | 2018-01-29 | 2018-08-28 | 中国建筑第八工程局有限公司 | The construction method of stair sliding support |
| CN110593501A (en) * | 2019-08-27 | 2019-12-20 | 中建四局第六建筑工程有限公司 | Integral cast-in-place structure of sliding support stair and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10292587A (en) * | 1997-04-18 | 1998-11-04 | Ohbayashi Corp | Damping construction for stair |
| CN101135180A (en) * | 2006-08-31 | 2008-03-05 | 湖南大学 | House shock insulation apparatus |
| JP2008223422A (en) * | 2007-03-15 | 2008-09-25 | Shimizu Corp | Mounting structure of stairs |
| CN102605909A (en) * | 2012-04-06 | 2012-07-25 | 北京工业大学 | Reinforced concrete platy stair with simple sliding support and construction method |
| CN204850452U (en) * | 2015-07-07 | 2015-12-09 | 上海天华建筑设计有限公司 | Cast in situ concrete cranked slab stairs sliding support and template thereof |
-
2015
- 2015-07-07 CN CN201510395717.5A patent/CN104929363B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10292587A (en) * | 1997-04-18 | 1998-11-04 | Ohbayashi Corp | Damping construction for stair |
| CN101135180A (en) * | 2006-08-31 | 2008-03-05 | 湖南大学 | House shock insulation apparatus |
| JP2008223422A (en) * | 2007-03-15 | 2008-09-25 | Shimizu Corp | Mounting structure of stairs |
| CN102605909A (en) * | 2012-04-06 | 2012-07-25 | 北京工业大学 | Reinforced concrete platy stair with simple sliding support and construction method |
| CN204850452U (en) * | 2015-07-07 | 2015-12-09 | 上海天华建筑设计有限公司 | Cast in situ concrete cranked slab stairs sliding support and template thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457433A (en) * | 2018-01-29 | 2018-08-28 | 中国建筑第八工程局有限公司 | The construction method of stair sliding support |
| CN108457433B (en) * | 2018-01-29 | 2020-08-04 | 中国建筑第八工程局有限公司 | Construction method of stair sliding support |
| CN110593501A (en) * | 2019-08-27 | 2019-12-20 | 中建四局第六建筑工程有限公司 | Integral cast-in-place structure of sliding support stair and construction method thereof |
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| CN104929363B (en) | 2017-03-08 |
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