CN202559618U - Multi-step connection type cage staircase - Google Patents

Multi-step connection type cage staircase Download PDF

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Publication number
CN202559618U
CN202559618U CN2012200611247U CN201220061124U CN202559618U CN 202559618 U CN202559618 U CN 202559618U CN 2012200611247 U CN2012200611247 U CN 2012200611247U CN 201220061124 U CN201220061124 U CN 201220061124U CN 202559618 U CN202559618 U CN 202559618U
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China
Prior art keywords
stair
cage
staircase
stress frame
construction
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CN2012200611247U
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Chinese (zh)
Inventor
贾大鹏
李艳辉
张建忠
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Second Engineering Co Ltd of China Railway 12th Bureau Group Co Ltd
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Second Engineering Co Ltd of China Railway 12th Bureau Group Co Ltd
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Abstract

The utility model relates to a staircase for construction, in particular to a multi-step connection type cage staircase which solves problems that an existing staircase for building operations is troublesome in manufacture and installation, poor in safety, and the like. The multi-step connection type cage staircase comprises a vertical stress frame and a horizontal stress frame; the vertical stress frame consists of vertical beams; the horizontal stress frame consists of transverse beams; a plurality of staircase units are arranged in the stress frames; each staircase unit comprises upper and lower platform beams fixed on the corresponding adjacent transverse beams of the horizontal stress frame, upper and lower platforms are correspondingly erected on the upper and lower platform beams and the transverse beams, and an inclined ladder beam is mounted between each upper platform and the corresponding lower platform and is provided with a pedal plate; and positioning columns are fixed on the upper and lower platforms of each staircase unit, and handrails are connected among the positioning columns. The multi-step connection type cage staircase has the advantages of safety, small occupied area, quickness in assembly and disassembly, reusability and the like, construction safety of constructors is ensured, construction time is saved, and construction can be efficient and quick. Accordingly, the multi-step connection type cage staircase is applicable to all ground and underground buildings, construction sites and the like.

Description

Multistage interconnection system cage stair
Technical field
The utility model relates to a kind of construction and uses stair, is specially a kind of multistage interconnection system cage stair.
Background technology
Unfavorable factors such as along with the fast development of urban architecture construction, more and more high to requirements such as high standard, high safety, high-quality, difficulty of construction strengthens gradually, and exists the place little in the construction always, and safety requirements is high, and the duration is urgent.Especially in the vertical bigger building site of the discrepancy in elevation; General oblique stair are made, install more loaded down with trivial details; Expend the long period, bring certain influence for the whole construction duration, and floor space is bigger; Safety is relatively poor, can't satisfy existing city on the ground, the underground building fast, the requirement of safe construction.
Summary of the invention
There is problem such as make, installation is loaded down with trivial details, safety is relatively poor in the utility model in order to solve construct used stair of existing building, and a kind of multistage interconnection system cage stair are provided.
The utility model is to adopt following technical scheme to realize: multistage interconnection system cage stair comprise the vertical stress frame that is made up of vertical beam and are made up of crossbeam and are installed in parallel in the horizontal stress frame in the vertical stress frame from top to bottom; Be provided with some stairway unit that connect in the stress frame from top to bottom; Each stairway unit structure comprises upper mounting plate beam and the lower platform beam that is separately fixed on the adjacent level stress frame crossbeam; Corresponding upper mounting plate, the lower platform of having set up on upper and lower landing beam and the crossbeam; The inclined ladder beam is installed, the parallel pedal that is equipped with on the inclined ladder beam between the upper and lower platform; Be fixed with reference column respectively on the upper and lower platform of each stairway unit, be connected with handrail between the reference column.
In order further to optimize the structure of these cage stair, improve its function, the utility model has also carried out following architecture advances:
Said these cage stair also comprise base and are embedded in the positioning bolt in the base, and the stairway unit that is positioned at cage stair bottom is fixed through bolt and base.Base can adopt concreting to form, and can increase the steadiness of total.
The said stairway unit top that is positioned at cage stair top is provided with the guardrail that is connected with vertical beam all around, can guarantee pedestrains safety.
Said cage stair peripheral solder has protective screening, can guarantee pedestrian's safety, and protective screening is bearing load not generally, only bearing load when falling object or flying object bump.
For ease of quickly dismantled and the maintenance at the construction field (site) of cage stair, transportation, adopt bolt to connect between the said adjacent stairway unit, between crossbeam and the vertical beam, between crossbeam and the platform and all adopt bolt to connect between inclined ladder beam and the platform.
Said in upper and lower platform bottom and four jiaos all weld stiffened panel, improve the intensity and the stability of platform.
Adopt the structure design of the utility model, the cage stair are to be formed by connecting a plurality of stairway unit, and each unit all seals welding with catch net, and stairway unit adopts unified size, is convenient to come into operation fast, and can reuses; For guaranteeing flexural strength and the shearing resistance between the cage stairway unit, the agents enhance overall stability of structure is connected the building structure of cage stair with side wall or dependence; When live load was applied on the broadstep, pedal reached live load on the platform through the inclined ladder beam, and platform reaches ground with live load through stair beam, vertical beam again.
Compared with prior art, the utlity model has following advantage:
1, is formed by connecting a plurality of cage stairway unit, can accomplishes dismounting fast, also be convenient to safeguard;
2, the cage stair are the structures of carrying out integrally closed with catch net, in be made as multi-bended stair, and the height of every bench is very little, can be good at guaranteeing pedestrian's safety;
3, be easy to safeguard that the life-span is long that reuse is strong, range of application is very wide;
In a word, the described cage stair of the utility model have that safety, floor space are little, quickly dismantled, advantage such as can reuse, and have guaranteed constructor's construction safety, have practiced thrift the engineering time greatly, can be efficiently organizing construction fast.Applicable to ground and multiple occasions such as underground owned building, building site, especially require the construction work high, that construction period is tight, the place is limited for construction safety, have very high promotional value.
Description of drawings
Fig. 1 is the perspective view of the utility model;
Fig. 2 is that the plane of the utility model connects sketch map;
Fig. 3 is the syndeton sketch map of said stairway unit of the utility model and stress frame;
Fig. 4 is the lateral view of the said stairway unit of the utility model;
Fig. 5 is the vertical view of the said stairway unit of the utility model;
Fig. 6 is the structural representation of the top stairway unit of the said cage stair of the utility model;
Among the figure: the 1-vertical beam; The 2-crossbeam; 3-upper mounting plate beam; 4-lower platform beam; The 5-upper mounting plate; The 6-lower platform; 7-inclined ladder beam; The 8-pedal; The 9-reference column; The 10-handrail; The 11-guardrail; The 12-stiffened panel; The 13-reinforcing rib.
The specific embodiment:
Multistage interconnection system cage stair are like Fig. 1, shown in 2; Comprise the vertical stress frame that constitutes by vertical beam 1 and constitute by crossbeam 2 and be installed in parallel in the horizontal stress frame in the vertical stress frame from top to bottom; Be provided with some stairway unit that connect in the stress frame from top to bottom; Like Fig. 3,4, shown in 5, each stairway unit structure comprises the upper mounting plate beam 3 and lower platform beam 4 that is separately fixed on the adjacent level stress frame crossbeam, corresponding upper mounting plate 5, the lower platform 6 of having set up on upper and lower landing beam and the crossbeam; As shown in Figure 5; In upper and lower platform bottom and four jiaos all weld stiffened panel 12, inclined ladder beam 7 is installed, the parallel pedal 8 that is equipped with on the inclined ladder beam between the upper and lower platform; Be fixed with reference column 9 respectively on the upper and lower platform of each stairway unit, be connected with handrail 10 between the reference column.These cage stair also comprise base and are embedded in the positioning bolt in the base, and the stairway unit that is positioned at cage stair bottom is fixed through bolt and base; Cage stair peripheral solder has protective screening.Adopt bolt to connect between the adjacent stairway unit, between crossbeam and the vertical beam, between crossbeam and the platform and all adopt bolt to connect between inclined ladder beam and the platform.
As shown in Figure 6, the stairway unit top that is positioned at cage stair top is provided with the guardrail 11 that is connected with vertical beam 1 all around.
During concrete the making, key points for operation are following:
1, the stairway unit height is confirmed
According to the designing requirement of stair, pedal wide (b), high (h) should meet one of following relation:
b?+?h?=?450mm b?+?2h?=?600~620mm
The parameter of choosing is wide b=250mm, high h=200mm, and b+h=450mm promptly satisfies first relation, adheres to specification.
The angle of stair is generally got between 20 ° ~ 45 °, and the width of the discrepancy in elevation and pedal is confirmed as 200mm and 250mm between the pedal.
2, stairway width confirms
The width of interim broadstep depends on current number and fire-fighting requirement, generally must meet the following conditions:
1, per share stream of people's width=average shoulder breadth (550mm)+a little puies forward thing size (0~150mm).
2, fire-fighting requires each stair must guarantee about the two people while bench minimum widith 1100~1400mm.
3, outdoor escape stair bench minimum widith 800~900mm.
Based on above-mentioned 3 points, cage stair bench is wide to be 1100mm.
3, mark time and several confirm
According to the architectural stair design data, the minimum number of marking time of bench was 3 steps, was at most 18 steps.After the stair angle was confirmed, several N that mark time were mainly confirmed by the height of building.
Figure 2012200611247100002DEST_PATH_IMAGE001
To different field conditions, can calculate several N that mark time according to above-mentioned formula.Choosing the number of marking time in this design is 8.
4, the stairway unit size is confirmed
(1) height of each unit of cage stair: h=0.2 * 8=1.6m, top unit top is provided with handrail and guardrail, and guardrail and height of armrests are 1.1m, also can change according to field condition.
(2) length of stairway unit
The size of the general design of landing is got 1.2m at 0.9m ~ 1.5m, and the horizontal length of each bench is 2m.
(3) height of armrests
According to the design parameters of stair, horizontal rails should be not less than 1.05m, and the height of getting balustrade is 1.1m.
(4) the broadstep size is confirmed
The pedal of bench generally adopts antiskid plate, because the long 1m of pedal, the bending moment ratio that receives is bigger, and reducing the measure that moment of flexure takes usually is the angle steel of welding up and down at pedal.
5, the force analysis of cage stair
Selection, the force analysis of stair are most important; Not only need be to dissimilar chemical composition of steel; Calculation is analyzed and examined to mechanical property, and will combine the practicality, aesthetic measure etc. of the price of steel, whole stair, finally makes stair reach safety, economic, effect reliably.Before the structure of whole stair carried out force analysis, earlier stairway unit is analyzed.When live load was applied on the broadstep, pedal reached platform through inclined ladder with live load, and platform reaches live load on base and the ground through stair beam, vertical beam again.
6, each several part structure selection
(1) part of marking time
The pedal of job site stair generally adopts antiskid plate.The specification of checkered plates has 2.5 ~ 8mm10 kind specification with basic thickness (thickness of lug, nib is disregarded) expression, gets the checkered steel plate that thickness is 3mm.
(2) armrest portion
Handrail is the safeguard procedures of protection pedestrains safety, holds the comfortable requirement of handrail for satisfying the pedestrian, and factors such as the practicality of bond material, economy are selected for use and used steel pipe.Dismounting and maintenance for ease of handrail are welded on handrail on the steel plate, and steel plate all adopts bolt to be connected with reference column, reference column and platform structure.
(3) inclined ladder beam part
The selection of stair stringer at first will be satisfied safety requirements, and the length of every bench is 2.56m, is used as the inclined ladder beam so get C shaped steel.The size of C shaped steel will satisfy the condition of pedal both sides and channel-section steel weldering contact surface full weld.The length of pedal is 250mm, and the stair angle is 39 °, so the height of C shaped steel is at least 156mm.
(4) platform structure part
Platform structure is the main stressed and force transferring structure of load, and load comprises the dead load and the live load of platform and terraced beam, so requirement of strength is higher.Landing slab generally also adopts checkered plates, when confirming landing beam length, need consider the size of reference column, the width and the installing space of inclined ladder beam C shaped steel.For increasing intensity and the stability that guarantees platform, the measure of taking is that the while is at four welded corner joint stiffened panels of platform structure at platform bottom welding stiffened panel.
(5) crossbeam and vertical beam part
Crossbeam and vertical beam are the guarantees of whole cage staircase structure intensity, and it reaches ground with all loads, so most important to their selection.Consider and adopt bolt to connect between each stairway unit, so choose angle steel.
(6) protective screening
Cage stair peripheral solder has protective screening, can guarantee pedestrian's safety.Protective screening is bearing load not generally, bearing load when falling object or flying object bump only, and protective screening generally all adopts gauze wire cloth, chooses zinc-plated rhombus net.
(7) the thin portion of stairway unit structure connects
For ease of dismounting, maintenance and the transportation of stair, between main connecting portion (between like crossbeam and vertical beam, between crossbeam and the platform, inclined ladder beam and platform), all adopt bolt to connect.Be the connected mode of each thin portion unit below, as shown in the table.
The thin portion of table stairway unit structure connected mode table
Sequence number Thin portion structure title Connected mode Remarks
1 Crossbeam and vertical beam The manual arc welding Welding rod adopts J422
2 Crossbeam and crossbeam The manual arc welding Welding rod adopts J422
3 Protective screening and external structure The manual arc welding Welding rod adopts J422
4 Landing beam and crossbeam The manual arc welding Welding rod adopts J422
5 Inclined ladder beam and landing beam Bolt connects Add supporting steel plate washer and flat shim
6 Handrail steel plate and reference column Bolt connects Add supporting steel plate washer and flat shim
7 Reference column and landing beam Bolt connects Add supporting steel plate washer and flat shim
8 Handrail and handrail steel plate The manual arc welding Welding rod adopts J422
(8) connection between the stairway unit
For ease of stair dismounting and transportation, adopt bolt to connect between the stairway unit.
Be to guarantee the stability of cage staircase structure, except that crossbeam and vertical beam connected, whole stair must be connected with side wall or the structural construction that relies on, and connected mode can adopt several different methods such as bolt, pre-embedded steel slab welding and anchor pole be fixing, and is as shown in Figure 1.
(9) stair are connected with ground
Before the cage stair were installed, elder generation carried out smooth to ground, pour into a mould with concrete again, guarantees that flatness error is no more than 5mm, and pre-embedded bolt in concrete is prepared for connecting the stair base.
Case history:
Project profile:
No. ten line second phases of Beijing Metro 08 mark comprises three intervals, a station in the Fengtai District, Beijing City, and station station owner's body structure is striden the boxed frame structure, station length overall 490.8m for double-deck three.Cut and cover tunneling is adopted at the station, the interval shield construction that adopts.Remove until negative endless tube sheet from shield structure assembling beginning; Lifting well is occupied always during this; Can not be used for placing stair; Can only place stair at feed opening, but essential material hoists or lands because feed opening often has shield-tunneling construction, brought a lot of unsafe factors for the constructor who on stair, walks.And when the straddle truck lifting was perhaps landed, the constructor can not walk on stair, and this has brought very big inconvenience to construction.
In order to guarantee down-hole constructor's safety, do not influence normal construction production, the described multi-ladder interconnection system of the utility model cage stair are adopted in project management department's decision; It can be installed fast, and safe and reliable with respect to general oblique stair, and floor space is also very little; While is at the top and the outside weldings protective screening of stair; Falling object or horizontal flight thing can not cause danger to the personnel of stair activity, thereby have guaranteed constructor's safety, can guarantee the continuity of constructing yet; Shorten the construction period, practiced thrift construction cost.
Economic benefit
Cage stair processing technology is simple, is convenient to operation, and have that floor space is little, safety is very high, advantages such as fast demountable and recycling, so can highlight its using value gradually in the building site.Present stage, the municipal construction difficulty strengthened gradually, existed the place little in the construction always, and safety requirements is high; Unfavorable conditions such as urgent and work plane of duration is more; Adopt the utility model organizing construction in the construction, be able to overcome these unfavorable factors, the organizing construction of being convenient to safely and fast produces; Fulfil engineering duty ahead of schedule, economic benefit and safety benefit are obvious.See table with the performance analysis correction data that common oblique stair fabrication and processing and installation are compared.
Table performance analysis contrast table
Social benefit
The construction period has been shortened in the enforcement of this worker method, has improved production efficiency, satisfies urbanization construct high safety, high-quality, high standard, high efficiency requirement, obtains owner unit, supervisor and colleague's appreciation.Pollution-free basically to surrounding enviroment simultaneously, also compliance with environmental protection requirements has obtained good social benefit.

Claims (6)

1. multistage interconnection system cage stair; It is characterized in that comprising the vertical stress frame that constitutes by vertical beam (1) and constitute by crossbeam (2) and be installed in parallel in the horizontal stress frame in the vertical stress frame from top to bottom; Be provided with some stairway unit that connect in the stress frame from top to bottom; Each stairway unit structure comprises upper mounting plate beam (3) and the lower platform beam (4) that is separately fixed on the adjacent level stress frame crossbeam; Corresponding upper mounting plate (5), the lower platform (6) of having set up is equipped with inclined ladder beam (7) on upper and lower landing beam and the crossbeam between the upper and lower platform, the parallel pedal (8) that is equipped with on the inclined ladder beam; Be fixed with reference column (9) on the upper and lower platform of each stairway unit respectively, be connected with handrail (10) between the reference column.
2. multistage interconnection system cage stair according to claim 1 is characterized in that these cage stair also comprise base and are embedded in the positioning bolt in the base, and the stairway unit that is positioned at cage stair bottom is fixed through bolt and base.
3. multistage interconnection system cage stair according to claim 1 and 2 is characterized in that the stairway unit top that is positioned at cage stair top is provided with the guardrail (11) that is connected with vertical beam (1) all around.
4. multistage interconnection system cage stair according to claim 1 and 2 is characterized in that cage stair peripheral solder has protective screening.
5. multistage interconnection system cage stair according to claim 1 and 2 is characterized in that between the adjacent stairway unit adopting bolt to connect, between crossbeam and the vertical beam, between crossbeam and the platform and all adopt bolt to connect between inclined ladder beam and the platform.
6. multistage interconnection system cage stair according to claim 1 and 2, it is characterized in that in upper and lower platform bottom and four jiaos all weld stiffened panel (12).
CN2012200611247U 2012-02-24 2012-02-24 Multi-step connection type cage staircase Expired - Fee Related CN202559618U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102587601A (en) * 2012-02-24 2012-07-18 中铁十二局集团第二工程有限公司 Multistage connection cage-type staircase
CN106869421A (en) * 2017-01-10 2017-06-20 中国建筑第八工程局有限公司 Assembled stairs structure and its installation method
CN112031466A (en) * 2020-08-18 2020-12-04 东莞市至简机电工程技术有限公司 Assembled building construction stair

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102587601A (en) * 2012-02-24 2012-07-18 中铁十二局集团第二工程有限公司 Multistage connection cage-type staircase
CN106869421A (en) * 2017-01-10 2017-06-20 中国建筑第八工程局有限公司 Assembled stairs structure and its installation method
CN112031466A (en) * 2020-08-18 2020-12-04 东莞市至简机电工程技术有限公司 Assembled building construction stair

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121128

Termination date: 20200224

CF01 Termination of patent right due to non-payment of annual fee