CN105317180A - Semi-assembly stair with prefabricated steps - Google Patents
Semi-assembly stair with prefabricated steps Download PDFInfo
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- CN105317180A CN105317180A CN201510870289.7A CN201510870289A CN105317180A CN 105317180 A CN105317180 A CN 105317180A CN 201510870289 A CN201510870289 A CN 201510870289A CN 105317180 A CN105317180 A CN 105317180A
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Abstract
The invention relates to a stair, and particularly discloses a semi-assembly stair with prefabricated steps. The semi-assembly stair comprises a cast-in-situ cantboard and the prefabricated steps, the cast-in-situ cantboard is provided with first embedded bars and first embedded holes, second embedded holes matched with the first embedded bars are formed in the prefabricated steps, the prefabricated steps are provided with second embedded bars matched with the first embedded holes, and a cement mortar layer is formed between the cast-in-situ cantboard and the prefabricated steps in a cast-in-situ mode. The semi-assembly stair with the prefabricated steps is convenient to transport and convenient to install stably, and therefore the problems that an existing prefabricated assembly stair is heavy, difficult to transport, inconvenient to install and instable in installation are solved.
Description
Technical field
The present invention relates to stair field, be specifically related to a kind of prefabricated ladder step half assembling stair.
Background technology
Stair are the components as floor gap vertical transportation in building, for the traffic connection between floor and when the discrepancy in elevation is larger.Although highrise building adopts elevator as main vertical transportation instrument, but still stair to be retained for escaping during fire; Stair are made up of the bench (running also known as ladder) of continuous step, platform (half space) and fender member etc.Minimum and the highest level of stair mark time between horizontal projection distance for ladder long, the height overall of step be terraced high.
Now current, generally use cast-in-situ steel reinforced concrete stair to be that staristep, platform and landing beam cast in situs are become an entirety in building engineering, its good integrity, rigidity are larger.Shock resistance is strong.But in work progress, experience installation half space, some arrange loaded down with trivial details operation to install ladder step, welding and the cementation of fissures etc., in the process that stair make, be subject to extraneous factor impact larger, as: workman's level is uneven, template splicing mode is improper, concrete blinding piece is not tight, very easily cause stair construction joint process not in place, surface of marking time is not upright, unfilled corner of marking time falls rib, mark time the quality problems such as size exceeds standard, stair trueness error brings a series of trouble to follow-up decoration construction and examination.
Along with development, in order to solve the problem, people have createed prefabricated assembled stair, and prefabricated assembled stair refer in pre-fabricated factory or the good staristep of site prefabrication, turn the parts such as Liang Tai, then lift staircase at the scene.Prefabricated assembled stair are better than cast-in-situ stair in environmental protection, low-carbon (LC) and end product quality, but present stage housing industrialization be just in starting the exploratory stage, prefabricated assembled stair cost is a little more than cast-in-place structural, and indoor staircase hoisting difficulty is larger, the node required precision of installing is high, and meanwhile, staircase is the easiest damaged location of entire building structure, precast stair is used in cast-in-place framework, and its globality and anti-seismic performance are also controversial.
In the building engineering of cast-in-place framework, for solving the common quality problems of concrete staircase, meanwhile, iterative method process of industrialization, is necessary to study ladder step prefabricated assembled (half assembling stair) technology.
And existing prefabricated assembled stair great majority are by prefabricated while of swash plate and ladder step, and one-body molded, swash plate and ladder step gross weight comparatively greatly, directly have influence on the transport of prefabricated assembled stair, and simultaneously when installing prefabricated assembled stair, too increase lifting difficulty; After rigging out, because without any mutual restriction on the steel mesh reinforcement between swash plate and two rest ledges, easily there is inconsistent phenomenon in prefabricated assembled stair, causes workmanship to reduce.Can the advantage of comprehensive full prefabricated stair of cast-in-situ stair and factory, carry out site prefabrication installation to swash plate cast-in-place (not affecting globality and the shock resistance of structure), ladder step piecemeal, ensure the Forming Quality of stair, construction is simple, economic and practical.
Summary of the invention
The object of the invention is to provide convenient transportation, installation firmly and prefabricated ladder walks half assembling stair easily.
Prefabricated ladder step half assembling stair in this programme, comprise cast-in-place swash plate and prefabricated ladder step, cast-in-place swash plate is provided with the first embedded bar and the first embedded hole, prefabricated ladder step is provided with the second embedded hole coordinated with the first embedded bar, prefabricated ladder step is also provided with the second embedded bar coordinated with the first embedded hole, between cast-in-place swash plate and prefabricated ladder step, is cast with cement sand bed.
The know-why of this programme and beneficial effect are: in staircase, first build out cast-in-place swash plate, when building cast-in-place swash plate, first on the reinforcing bar of cast-in-place swash plate inside, evenly connect several first embedded bars, and uniform several first embedded holes reserved.
In factory, use mould to build out prefabricated ladder and walk, when not building, first uniform several second embedded bars of connection on the reinforcing bar of prefabricated ladder step, and reserve several the second embedded holes uniformly.
Cast-in-place swash plate and prefabricated ladder walk piecemeal and make, and alleviate the weight of prefabricated ladder step on the whole, and make prefabricated ladder step be more convenient for transporting; Use the hoisting prefabricated ladder step of hanging apparatus, due to alleviating of weight, decrease the operation burden of hanging apparatus, thus facilitate the installation of prefabricated ladder step.
During installation, after prefabricated ladder step is sling, prefabricated ladder step is adjusted orientation, put on cast-in-place swash plate, first embedded bar will be inserted in the second embedded hole, and the second embedded bar will be inserted in the first embedded hole, and cast-in-place swash plate is fixing, prefabricated ladder step will be subject to the restriction point restriction of several first embedded bars and the second embedded bar, thus prefabricated ladder step stably can be fixed on cast-in-place swash plate.
Finally, joints cement mortar between the prefabricated ladder step installed and cast-in-place swash plate, forms cement sand bed, and prefabricated ladder step is fixed on cast-in-place swash plate, and makes prefabricated ladder step stable further.
Further: also comprise the first rest ledge and be positioned at the second rest ledge below the first rest ledge, cast-in-place swash plate is fixedly connected between the first rest ledge and the second rest ledge.First rest ledge and the second rest ledge will be fixed in staircase, form two fixing tie points, are then fixedly attached between the first rest ledge and the second rest ledge by cast-in-place swash plate, can make the gripper shoe on the cast-in-place straight inclined-plane of swash plate shape.
Further: prefabricated ladder walks the end be connected with the first rest ledge and the second rest ledge and is provided with card article, and the first rest ledge and the second rest ledge are provided with the draw-in groove coordinating card article.When making prefabricated ladder step, the reinforcing bar that prefabricated ladder step is inner is first permanently connected several card articles, when making first rest ledge and the second rest ledge, first reserves the position that size is a bit larger tham the draw-in groove of card article, then builds; Then when installing prefabricated ladder step, card article will easily enter in draw-in groove, is then welded on by card article on draw-in groove wall, uses cement mortar to be filled and led up by draw-in groove afterwards.
Further: prefabricated ladder step is inner is hollow setting.The weight of prefabricated ladder step can be alleviated further, thus convenient transport and installation.
Further: cast-in-place swash plate to be embedded with the first built-in pipe, first embedded bar is inserted in the first built-in pipe, is provided with the second built-in pipe in the first embedded hole, and prefabricated ladder step is embedded with the 3rd built-in pipe, second embedded bar is inserted in the 3rd built-in pipe, is provided with the 4th built-in pipe in the second embedded hole.When making cast-in-place swash plate and prefabricated ladder step, directly several first built-in pipes pre-buried and the second built-in pipe on the relevant position of cast-in-place swash plate, several the 3rd built-in pipes pre-buried and the 4th built-in pipe on the relevant position of prefabricated ladder step, the first embedded bar of interference fit is inserted in the first built-in pipe, the second embedded bar of interference fit is inserted in the 3rd built-in pipe, facilitate the installation of the first embedded bar and the second embedded bar, also facilitate the making of the first embedded hole and the second embedded hole simultaneously.
Further: the first built-in pipe, the second built-in pipe, the 3rd built-in pipe and the 4th built-in pipe are pre-buried PCV and manage.Pvc pipe resistance to corrosion is strong, be easy to bonding, price is low, quality is hard, is convenient to fix, not yielding, is also convenient to the insertion of the first embedded bar and the second embedded bar.
Accompanying drawing explanation
Fig. 1 is the partial schematic diagram of the prefabricated ladder step of the embodiment of the present invention one half assembling stair;
Fig. 2 is the partial schematic diagram of Fig. 1;
Fig. 3 is the sectional drawing of the prefabricated ladder step of the embodiment of the present invention one half assembling stair.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: the second rest ledge 1, cast-in-place swash plate 2, prefabricated ladder step 3, loss of weight through hole 4, first rest ledge 5, second embedded hole 6, first embedded bar 7, second embedded bar 8, first embedded hole 9, card article 10, draw-in groove wall 11, cement sand bed 12.
The basic reference diagram 1 of embodiment one, shown in Fig. 2 and Fig. 3: prefabricated ladder step half assembling stair, comprise cast-in-place swash plate 2, prefabricated ladder step 3, first rest ledge 5 and the second rest ledge 1 be positioned at below the first rest ledge 5, first rest ledge 5 and the second rest ledge 1 are cast in staircase, the inner reinforcing bar of cast-in-place swash plate 2 loses no time to weld with the first rest ledge 5 and the second rest ledge 1 inside, the welding edges that prefabricated ladder step 3 is connected with the first rest ledge 5 and the second rest ledge 1 has card article 10, first rest ledge 5 and the second rest ledge 1 are welded with the draw-in groove coordinating card article 10, cast-in-place swash plate 2 is embedded with two rows laterally equally distributed pre-buried PCV pipe, cement is used to build cast-in-place swash plate 2, some first embedded bar 7 compartment of terrains are inserted in the pre-buried PCV pipe of two rows, first embedded bar 7 and pre-buried PCV pipe interference fit, the pre-buried PCV pipe not inserting the first embedded bar 7 is the first embedded hole 9, prefabricated ladder step 3 is also embedded with two rows laterally equally distributed pre-buried PCV pipe, the prefabricated ladder using mould and cement to build out with loss of weight through hole 4 walks 3, some second embedded bar 8 compartment of terrains are inserted in the pre-buried PCV pipe of two rows, second embedded bar 8 and pre-buried PCV pipe interference fit, the pre-buried PCV pipe not inserting the second embedded bar 8 is the second embedded hole 6, first embedded bar 7 coordinates with the second embedded hole 6, second embedded bar 8 coordinates with the first embedded hole 9.
Conveying arrangement is used to be transported to erecting bed prefabricated ladder step 3, hanging apparatus is used prefabricated ladder step 3 to be sling, and prefabricated ladder step 3 is arranged on cast-in-place swash plate 2, first embedded bar 7 is inserted in the second embedded hole 6, second embedded bar 8 is inserted in the first embedded hole 9, is inserted in draw-in groove by card article 10, and uses electric welding to be welded on draw-in groove wall 11 by card article 10, then use cement mortar to be filled and led up by draw-in groove, thus prefabricated ladder step 3 can be made to be fixed on cast-in-place swash plate 2 by stable further; Finally, joints cement mortar between cast-in-place swash plate 2 and prefabricated ladder step 3, forms cement sand bed 12.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in manual etc. record the content that may be used for explaining claim.
Claims (6)
1. prefabricated ladder step half assembling stair, comprise cast-in-place swash plate and prefabricated ladder step, it is characterized in that: cast-in-place swash plate is provided with the first embedded bar and the first embedded hole, prefabricated ladder step is provided with the second embedded hole coordinated with the first embedded bar, prefabricated ladder step is also provided with the second embedded bar coordinated with the first embedded hole, between cast-in-place swash plate and prefabricated ladder step, is cast with cement sand bed.
2. prefabricated ladder step according to claim 1 half assembling stair, is characterized in that: also comprise the first rest ledge and be positioned at the second rest ledge below the first rest ledge, cast-in-place swash plate is fixedly connected between the first rest ledge and the second rest ledge.
3. prefabricated ladder step according to claim 1 half assembling stair, is characterized in that: described prefabricated ladder walks the end be connected with the first rest ledge and the second rest ledge and is provided with card article, and the first rest ledge and the second rest ledge are provided with the draw-in groove coordinating card article.
4. prefabricated terraced step according to claim 1 half assembling stair, is characterized in that: described prefabricated ladder step is inner is hollow setting.
5. prefabricated ladder step according to claim 4 half assembling stair, it is characterized in that: described cast-in-place swash plate is embedded with the first built-in pipe, first embedded bar is inserted in the first built-in pipe, the second built-in pipe is provided with in first embedded hole, prefabricated ladder step is embedded with the 3rd built-in pipe, second embedded bar is inserted in the 3rd built-in pipe, is provided with the 4th built-in pipe in the second embedded hole.
6. prefabricated ladder step according to claim 5 half assembling stair, is characterized in that: described first built-in pipe, the second built-in pipe, the 3rd built-in pipe and the 4th built-in pipe are pre-buried PCV and manage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870289.7A CN105317180A (en) | 2015-12-02 | 2015-12-02 | Semi-assembly stair with prefabricated steps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870289.7A CN105317180A (en) | 2015-12-02 | 2015-12-02 | Semi-assembly stair with prefabricated steps |
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| CN105317180A true CN105317180A (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510870289.7A Pending CN105317180A (en) | 2015-12-02 | 2015-12-02 | Semi-assembly stair with prefabricated steps |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485661A (en) * | 2018-07-23 | 2019-11-22 | 李藏柱 | A kind of precast stair and its connection structure |
| CN112482676A (en) * | 2020-11-20 | 2021-03-12 | 广州金辉建设集团有限公司 | Prefabricated staircase and installation process thereof |
| CN112854634A (en) * | 2021-03-26 | 2021-05-28 | 淮阴工学院 | Assembling method of assembled prefabricated staircase |
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| CN204370727U (en) * | 2014-12-01 | 2015-06-03 | 河南亚鹰钢结构幕墙工程有限公司 | Precast stair unit and use the staristep of this stairway unit |
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| CN205369755U (en) * | 2015-12-02 | 2016-07-06 | 重庆建工第九建设有限公司 | Prefabricated half assembled stair of ladder step |
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2015
- 2015-12-02 CN CN201510870289.7A patent/CN105317180A/en active Pending
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| JP2001227126A (en) * | 2000-02-16 | 2001-08-24 | Kurosawa Kensetsu Kk | Prefabricated frame structure of stair |
| CN102767288A (en) * | 2012-01-17 | 2012-11-07 | 中国建筑第四工程局有限公司 | Method and structure for mounting precast reinforced concrete stairs |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485661A (en) * | 2018-07-23 | 2019-11-22 | 李藏柱 | A kind of precast stair and its connection structure |
| CN112482676A (en) * | 2020-11-20 | 2021-03-12 | 广州金辉建设集团有限公司 | Prefabricated staircase and installation process thereof |
| CN112854634A (en) * | 2021-03-26 | 2021-05-28 | 淮阴工学院 | Assembling method of assembled prefabricated staircase |
| CN112854634B (en) * | 2021-03-26 | 2022-02-18 | 淮阴工学院 | Assembling method of assembled prefabricated staircase |
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Application publication date: 20160210 |