CN104499663A - Concrete stair and assembling method of concrete stair - Google Patents
Concrete stair and assembling method of concrete stair Download PDFInfo
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- CN104499663A CN104499663A CN201410754848.3A CN201410754848A CN104499663A CN 104499663 A CN104499663 A CN 104499663A CN 201410754848 A CN201410754848 A CN 201410754848A CN 104499663 A CN104499663 A CN 104499663A
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Abstract
The invention relates to the field of building components, in particular to a concrete stair, which comprises pre-cast stair treads, a cast-in-situ upper-layer stair platform, a cast-in-situ lower-layer stair platform, a cast-in-situ upper-layer ladder beam and a cast-in-situ lower-layer ladder beam, wherein treads are arranged on the pre-cast stair treads; the cast-in-situ upper-layer stair platform and the cast-in-situ upper-layer ladder beam are casted into a whole; the cast-in-situ lower-layer stair platform and the cast-in-situ lower-layer ladder beam are casted into a whole; the upper ends of the pre-cast stair treads are fixedly connected with the cast-in-situ upper-layer ladder beam; the lower ends of the pre-cast stair treads are fixedly connected with the cast-in-situ lower-layer ladder beam; a plurality of horizontally arranged hoisting and casting holes are formed in the pre-cast stair treads; a plurality of pre-cast stair treads are horizontally arranged side by side; the hoisting and casting holes in the same horizontal direction are communicated to form an overall hoisting and casting hole; reinforcing steel bars penetrate through the overall hoisting and casting hole and are casted with the pre-cast stair treads into a whole through binding agent. The invention also provides an assembling method of the concrete stair. According to the concrete stair and the assembling method of the concrete stair, the pre-cast stair treads can be quickly and conveniently transported, hoisted and installed.
Description
Technical field
The present invention relates to building unit field, specifically the assemble method of a kind of concrete staircase and concrete staircase.
Background technology
Stair are one of very important structural element in Residential structure, primarily of stair tread and landing composition, wherein, stair tread is divided into Cast-in-situs type and prefabricated two kinds, cast-in-situ stair plate can give full play to the plasticity of steel concrete, structural integrity is good, widely applicable, but there is formwork difficulty, expend larger, from shortcomings such as great and long construction periods, and precast stair plate first makes owing to adopting the production method being transported to job site again and carrying out installing, there is construction simple, cost is low, the advantages such as short construction period, but, weight due to prefabricated stair tread is large and do not have special Hoisting Position, cause the transport of prefabricated stair tread, lifting and installation difficulty.Chinese patent application with the immediate prior art of present patent application to be publication number be CN104153528A, it discloses a kind of precast hollow stair, and for transport and install and alleviate weight, the hoisting device of setting makes the handling of stair more for convenience.But the weight of the hollow stair of this integrated precast is still heavier, especially when the situation that the width running into stair is larger, the weight of stair is very large, and volume is also comparatively large, is inconvenient to transport and lift.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, providing a kind of by the rational precast stair plate of width dimensions, by laterally assembling the technical scheme of the fixing concrete staircase formed.
Technical problem to be solved by this invention realizes by the following technical solutions: a kind of concrete staircase, comprise precast stair plate, cast-in-place upper strata landing, cast-in-place lower floor landing, cast-in-place upper strata ladder beam and cast-in-place lower floor ladder beam, described precast stair plate is provided with marks time; Described cast-in-place upper strata landing and cast-in-place upper strata ladder beam are built and are integrated, cast-in-place lower floor landing and cast-in-place lower floor ladder beam are built and are integrated, the upper end of described precast stair plate is fixedly connected with cast-in-place upper strata ladder beam, and the lower end of precast stair plate is fixedly connected with cast-in-place lower floor terraced beam; The lifting that precast stair plate is provided with multiple horizontally set is held concurrently pouring hole, described precast stair plate laterally installs polylith side by side, each lifting in same level direction pouring hole of holding concurrently is communicated with as a whole lifting and holds concurrently pouring hole, and reinforcing bar is integrated through hold concurrently pouring hole being built by cementing agent and precast stair plate of overall lifting.
Technical scheme of the present invention also has: on every block precast stair plate, be provided with three double pouring holes of lifting, be separately positioned on the upper, middle and lower of precast stair plate.
Technical scheme of the present invention also has: described cast-in-place upper strata ladder beam is provided with the groove I of L shape, described groove I surface is embedded with pressure-bearing junction steel plate I, the upper end of described precast stair plate is provided with the projection I coordinated with groove I, described projection I surface is embedded with pressure-bearing junction steel plate II, and described projection I is positioned at groove I and pressure-bearing junction steel plate I and pressure-bearing junction steel plate II are welded to connect; Described cast-in-place lower floor ladder beam is provided with the groove II of L shape, described groove II surface is embedded with pressure-bearing junction steel plate III, the lower end of described precast stair plate is provided with the projection II coordinated with groove II, described projection II surface is embedded with pressure-bearing junction steel plate IV, and described projection II is positioned at groove II and pressure-bearing junction steel plate III and pressure-bearing junction steel plate IV are welded to connect.First pressure-bearing junction plate I, II, III and IV serves the effect of pressure-bearing, prevent groove I, projection I, groove II or projection II from damaging because bearing weight, secondly the effect be connected and fixed also is served, therefore, adopt the technical program, precast stair plate and the firm and stable connection of cast-in-place terraced beam can be made.
Technical scheme of the present invention also has: described in mark time in be provided with the loss of weight through hole of horizontally set.Adopt the technical program, the weight of precast stair plate can be alleviated.
Technical scheme of the present invention also has: the cross section of described loss of weight through hole is the similar triangles in cross section of marking time.Triangle is the most stable shape, adopts the technical program, can ensure the bearing strength of marking time.
Technical scheme of the present invention also has: described in mark time and be provided with reeding mounting groove.
Technical scheme of the present invention also has: the width of described precast stair plate is 300 millimeters or 600 millimeters.300 millimeters and 600 millimeters is construction module, adopt the technical program, precast stair plate and cast-in-place upper strata ladder beam and cast-in-place lower floor ladder beam can be made to install coincide, precast stair plate has interchangeability, is beneficial to the suitability for industrialized production of precast stair plate and the prefabricated construction of concrete staircase.
Relative to prior art, the beneficial effect of concrete staircase of the present invention is: by little for polylith size, lightweight precast stair plate by laterally assembling the large-scale stair tread of composition one piece, the difficulty reducing the transport of precast stair plate, lifting and install, in addition, when hoisting prefabricated stair tread, chain sling can be held concurrently pouring hole through lifting, make the very convenient and safety of the lifting of precast stair plate, improve efficiency of construction.
The present invention also provides a kind of mounting method of concrete staircase, comprises the following steps:
A, by the upper end of precast stair plate and cast-in-place upper strata ladder beam overlap, the projection I of precast stair plate upper end is made to be positioned at the groove I of cast-in-place upper strata ladder beam, the joint of the pre-buried pressure-bearing junction steel plate I in the groove I surface pressure-bearing junction steel plate II pre-buried with projection I surface is welded, the lower end of precast stair plate and cast-in-place lower floor ladder beam are overlapped, make the projection II of precast stair plate lower end be positioned at the groove II of cast-in-place lower floor ladder beam, the joint of the pre-buried pressure-bearing junction steel plate III in the groove II surface pressure-bearing junction steel plate IV pre-buried with projection II surface is welded;
B, according to steps A, polylith precast stair plate is installed side by side, makes each lifting in same level direction pouring hole of holding concurrently be communicated with as a whole lifting and to hold concurrently pouring hole;
C, reinforcing bar inserted overall lifting and to hold concurrently in pouring hole and inject cementing agent and be fixed.
Technical scheme of the present invention also has: hold concurrently in pouring hole by chain sling through lifting in described steps A, uses crane gear auxiliary overlap joint precast stair plate.
Technical scheme of the present invention also has: described cementing agent is cement mortar or chemical agent.
Accompanying drawing explanation
Fig. 1 is the structural representation of concrete staircase of the present invention.
Fig. 2 is the partial enlarged drawing in Figure 1A portion.
Fig. 3 is the partial enlarged drawing in Figure 1B portion.
Fig. 4 is the structural representation of precast stair plate of the present invention.
In figure: 1, precast stair plate, 1-1, to mark time, 1-2, lifting are held concurrently pouring hole, 1-3, projection I, 1-4, pressure-bearing junction steel plate II, 1-5, projection II, 1-6, pressure-bearing junction steel plate IV, 1-7, loss of weight through hole, 1-8, reeding mounting groove, 2, cast-in-place upper strata landing, 3, cast-in-place lower floor landing, 4, cast-in-place upper strata ladder beam, 4-1, pressure-bearing junction steel plate I, 5, cast-in-place lower floor ladder beam, 5-1, pressure-bearing junction steel plate III.
Detailed description of the invention
For the technical characterstic of this programme can be clearly demonstrated, with reference to the accompanying drawings the specific embodiment of the invention is described further below.
As Figure 1-Figure 4: a kind of concrete staircase, precast stair plate 1, cast-in-place upper strata landing 2, cast-in-place lower floor landing 3, cast-in-place upper strata ladder beam 4 and cast-in-place lower floor ladder beam 5 is comprised; The width of described precast stair plate 1 is 300 millimeters, precast stair plate 1 is provided with the 1-1 that marks time, be provided with the loss of weight through hole 1-7 of horizontally set in the described 1-1 of marking time, the cross section of described loss of weight through hole 1-7 is the similar triangles in 1-1 cross section of marking time, described in the 1-1 that marks time be provided with reeding mounting groove 1-8; Described cast-in-place upper strata landing 2 is built with cast-in-place upper strata ladder beam 4 and is integrated, and cast-in-place lower floor landing 3 and cast-in-place lower floor ladder beam 5 are built and be integrated; Described cast-in-place upper strata ladder beam 4 is provided with the groove I of L shape, described groove I surface is embedded with pressure-bearing junction steel plate I 4-1, the upper end of described precast stair plate 1 is provided with projection I 1-3 coordinated with groove I, described projection I 1-3 surface is embedded with pressure-bearing junction steel plate II 1-4, and described projection I 1-3 is positioned at groove I and pressure-bearing junction steel plate I 4-1 and pressure-bearing junction steel plate II 1-4 is welded to connect; Described cast-in-place lower floor ladder beam 5 is provided with the groove II of L shape, described groove II surface is embedded with pressure-bearing junction steel plate III 5-1, the lower end of described precast stair plate 1 is provided with projection II 1-5 coordinated with groove II, described projection II 1-5 surface is embedded with pressure-bearing junction steel plate IV 1-6, and described projection II 1-5 is positioned at groove II and pressure-bearing junction steel plate III 5-1 and pressure-bearing junction steel plate IV 1-6 is welded to connect.First pressure-bearing junction plate I 4-1, II 1-4, III 5-1 and IV 1-6 serve the effect of load-bearing, prevent groove I, projection I 1-3, groove II or projection II 1-5 from damaging because bearing weight, secondly the effect be connected and fixed also is served, therefore, adopt the technical program, the connection that precast stair plate 1 and cast-in-place terraced beam are firm and stable can be made.
The lifting that precast stair plate 1 is provided with three horizontally sets is held concurrently pouring hole 1-2, is separately positioned on the upper, middle and lower of precast stair plate 1; Described precast stair plate 1 is laterally provided with three side by side, and three liftings in same level direction pouring hole 1-2 that holds concurrently is communicated with as a whole lifting and holds concurrently pouring hole, and reinforcing bar is integrated through hold concurrently pouring hole being built by cementing agent and precast stair plate 1 of the lifting of this entirety.
The present invention separately provides a kind of mounting method of concrete staircase, comprises the following steps:
A, the upper end of precast stair plate 1 and cast-in-place upper strata ladder beam 4 are overlapped, projection I 1-3 of precast stair plate 1 upper end is made to be positioned at the groove I of cast-in-place upper strata ladder beam 4, the joint of pre-buried pressure-bearing junction steel plate I 4-1 in groove I surface pressure-bearing junction steel plate II 1-4 pre-buried with projection I 1-3 surface is welded, the lower end of precast stair plate 1 and cast-in-place lower floor ladder beam 5 are overlapped, projection II 1-5 of precast stair plate 1 lower end is made to be positioned at the groove II of cast-in-place lower floor ladder beam 5, the joint of pre-buried pressure-bearing junction steel plate III 5-1 in groove II surface pressure-bearing junction steel plate IV 1-6 pre-buried with projection II 1-5 surface is welded,
B, according to steps A, three blocks of precast stair plates 1 are installed side by side, make three of same level direction to lift to hold concurrently pouring hole 1-2 to be communicated with as a whole lifting and to hold concurrently pouring hole;
C, reinforcing bar inserted overall lifting and to hold concurrently in pouring hole and inject cementing agent and reinforce.
In described steps A, chain sling is held concurrently in pouring hole 1-2 through lifting, use light weight crane auxiliary overlap joint precast stair plate.
Described cementing agent is cement mortar or chemical agent.
By reference to the accompanying drawings embodiments of the invention are elaborated above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.
Claims (10)
1. a concrete staircase, comprise precast stair plate (1), cast-in-place upper strata landing (2), cast-in-place lower floor landing (3), cast-in-place upper strata ladder beam (4) and cast-in-place lower floor ladder beam (5), described precast stair plate (1) is provided with mark time (1-1), described cast-in-place upper strata landing (2) is built with cast-in-place upper strata ladder beam (4) and is integrated, cast-in-place lower floor landing (3) builds with cast-in-place lower floor's ladder beam (5) and is integrated, the upper end of described precast stair plate (1) is fixedly connected with cast-in-place upper strata ladder beam (4), the lower end of precast stair plate (1) is fixedly connected with cast-in-place lower floor's ladder beam (5), it is characterized in that: the lifting being provided with multiple horizontally set on precast stair plate (1) is held concurrently pouring hole (1-2), described precast stair plate (1) laterally installs polylith side by side, each lifting in same level direction pouring hole (1-2) of holding concurrently is communicated with as a whole lifting and holds concurrently pouring hole, reinforcing bar is integrated through hold concurrently pouring hole being built by cementing agent and precast stair plate (1) of overall lifting.
2. concrete staircase according to claim 1, is characterized in that: on every block precast stair plate (1), be provided with three double pouring holes (1-2) of lifting, be separately positioned on the upper, middle and lower of precast stair plate (1).
3. concrete staircase according to claim 1, it is characterized in that: described cast-in-place upper strata ladder beam (4) is provided with the groove I of L shape, described groove I surface is embedded with pressure-bearing junction steel plate I (4-1), the upper end of described precast stair plate (1) is provided with the projection I (1-3) coordinated with groove I, described projection I (1-3) surface is embedded with pressure-bearing junction steel plate II (1-4), and described projection I (1-3) is positioned at groove I and pressure-bearing junction steel plate I (4-1) and pressure-bearing junction steel plate II (1-4) are welded to connect; Described cast-in-place lower floor's ladder beam (5) is provided with the groove II of L shape, described groove II surface is embedded with pressure-bearing junction steel plate III (5-1), the lower end of described precast stair plate (1) is provided with the projection II (1-5) coordinated with groove II, described projection II (1-5) surface is embedded with pressure-bearing junction steel plate IV (1-6), and described projection II (1-5) is positioned at groove II and pressure-bearing junction steel plate III (5-1) and pressure-bearing junction steel plate IV (1-6) are welded to connect.
4., according to the arbitrary described concrete staircase of claim 1-3, it is characterized in that: described in mark time and be provided with the loss of weight through hole (1-7) of horizontally set in (1-1).
5. concrete staircase according to claim 4, is characterized in that: the similar triangles that the cross section of described loss of weight through hole (1-7) is (1-1) cross section of marking time.
6., according to the arbitrary described concrete staircase of claim 1-3, it is characterized in that: described in mark time (1-1) be provided with reeding mounting groove (1-8).
7., according to the arbitrary described concrete staircase of claim 1-3, it is characterized in that: the width of described precast stair plate (1) is 300 millimeters or 600 millimeters.
8. an assemble method for the concrete staircase as described in as arbitrary in claim 1-7, comprises the following steps:
A, the upper end of precast stair plate (1) and cast-in-place upper strata ladder beam (4) are overlapped, the projection I (1-3) of precast stair plate (1) upper end is made to be positioned at the groove I on cast-in-place upper strata ladder beam (4), the joint of the pre-buried pressure-bearing junction steel plate I (4-1) in the groove I surface pressure-bearing junction steel plate II (1-4) surperficial pre-buried with projection I (1-3) is welded, the lower end of precast stair plate (1) and cast-in-place lower floor ladder beam (5) are overlapped, the projection II (1-5) of precast stair plate (1) lower end is made to be positioned at the groove II of cast-in-place lower floor ladder beam (5), the joint of the pre-buried pressure-bearing junction steel plate III (5-1) in the groove II surface pressure-bearing junction steel plate IV (1-6) surperficial pre-buried with projection II (1-5) is welded,
B, according to steps A, polylith precast stair plate (1) is installed side by side, makes each lifting in same level direction pouring hole (1-2) of holding concurrently be communicated with as a whole lifting and to hold concurrently pouring hole;
C, reinforcing bar inserted overall lifting and to hold concurrently in pouring hole and inject cementing agent and fix.
9. the assemble method of concrete staircase according to claim 8, is characterized in that: hold concurrently in pouring hole (1-2) by chain sling through lifting in described steps A, use crane gear auxiliary overlap joint precast stair plate (1).
10. the assemble method of concrete staircase according to claim 8 or claim 9, is characterized in that: described cementing agent is cement mortar or chemical agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410754848.3A CN104499663A (en) | 2014-12-11 | 2014-12-11 | Concrete stair and assembling method of concrete stair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410754848.3A CN104499663A (en) | 2014-12-11 | 2014-12-11 | Concrete stair and assembling method of concrete stair |
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| CN104499663A true CN104499663A (en) | 2015-04-08 |
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| CN201410754848.3A Pending CN104499663A (en) | 2014-12-11 | 2014-12-11 | Concrete stair and assembling method of concrete stair |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317180A (en) * | 2015-12-02 | 2016-02-10 | 重庆建工第九建设有限公司 | Semi-assembly stair with prefabricated steps |
| CN106121145A (en) * | 2016-07-15 | 2016-11-16 | 江苏中南建筑产业集团有限责任公司 | A kind of split blade type assembling stair and preparation method thereof and assembly method |
| CN106639197A (en) * | 2016-10-20 | 2017-05-10 | 中国建筑第七工程局有限公司 | Two-piece type assembled stair construction method |
| CN107345439A (en) * | 2017-07-21 | 2017-11-14 | 中建八局第建设有限公司 | A kind of making of precast stair component and installation method |
| CN107587670A (en) * | 2017-10-31 | 2018-01-16 | 江苏金贸科技发展有限公司 | A kind of concrete prefabricated stairs of accurate positioning |
| CN107587671A (en) * | 2017-10-31 | 2018-01-16 | 江苏金贸科技发展有限公司 | A kind of precast stair for being easy to lifting |
| CN109113283A (en) * | 2018-10-30 | 2019-01-01 | 山东连云山建筑科技有限公司 | A kind of precast rc slab formula stair |
| CN109138300A (en) * | 2018-09-30 | 2019-01-04 | 杭州江润科技有限公司 | The construction method of precast stair mounting structure |
| CN113404322A (en) * | 2021-06-15 | 2021-09-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for transforming steel ladder into concrete ladder in high-rise concrete structure |
| CN113605617A (en) * | 2021-07-30 | 2021-11-05 | 中国核工业华兴建设有限公司 | Splitting and installing method for prefabricated staircase |
-
2014
- 2014-12-11 CN CN201410754848.3A patent/CN104499663A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317180A (en) * | 2015-12-02 | 2016-02-10 | 重庆建工第九建设有限公司 | Semi-assembly stair with prefabricated steps |
| CN106121145A (en) * | 2016-07-15 | 2016-11-16 | 江苏中南建筑产业集团有限责任公司 | A kind of split blade type assembling stair and preparation method thereof and assembly method |
| CN106121145B (en) * | 2016-07-15 | 2018-11-23 | 南通大学 | A kind of split blade type assembly stair and preparation method thereof and assembly method |
| CN106639197A (en) * | 2016-10-20 | 2017-05-10 | 中国建筑第七工程局有限公司 | Two-piece type assembled stair construction method |
| CN106639197B (en) * | 2016-10-20 | 2019-01-18 | 中国建筑第七工程局有限公司 | A kind of split blade type assembly stair construction method |
| CN107345439A (en) * | 2017-07-21 | 2017-11-14 | 中建八局第建设有限公司 | A kind of making of precast stair component and installation method |
| CN107587670A (en) * | 2017-10-31 | 2018-01-16 | 江苏金贸科技发展有限公司 | A kind of concrete prefabricated stairs of accurate positioning |
| CN107587671A (en) * | 2017-10-31 | 2018-01-16 | 江苏金贸科技发展有限公司 | A kind of precast stair for being easy to lifting |
| CN109138300A (en) * | 2018-09-30 | 2019-01-04 | 杭州江润科技有限公司 | The construction method of precast stair mounting structure |
| CN109113283A (en) * | 2018-10-30 | 2019-01-01 | 山东连云山建筑科技有限公司 | A kind of precast rc slab formula stair |
| CN113404322A (en) * | 2021-06-15 | 2021-09-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for transforming steel ladder into concrete ladder in high-rise concrete structure |
| CN113605617A (en) * | 2021-07-30 | 2021-11-05 | 中国核工业华兴建设有限公司 | Splitting and installing method for prefabricated staircase |
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