CN209523408U - A kind of Novel staircase and the building including it - Google Patents
A kind of Novel staircase and the building including it Download PDFInfo
- Publication number
- CN209523408U CN209523408U CN201920197550.5U CN201920197550U CN209523408U CN 209523408 U CN209523408 U CN 209523408U CN 201920197550 U CN201920197550 U CN 201920197550U CN 209523408 U CN209523408 U CN 209523408U
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- Prior art keywords
- construction joint
- stair
- joint
- construction
- utility
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- 238000010276 construction Methods 0.000 claims abstract description 78
- 238000005266 casting Methods 0.000 claims abstract description 6
- 239000004567 concrete Substances 0.000 claims description 25
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010061245 Internal injury Diseases 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007586 pull-out test Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
The utility model discloses a kind of Novel staircase and including its building, belong to building field, including stair stringer, is equipped with construction joint in 2/3 eminence of the stair stringer, the joint face of the construction joint is parallel to horizontal plane.The utility model at stair stringer by being arranged construction joint, with the joint face of prior art construction joint perpendicular to stair axially compared with, stair construction joint indwelling is in 2/3 eminence of stair stringer, downlink gangboard has poured, uplink gangboard reserves part plate muscle with terraced beam intersection and wouldn't pour, and in subsequent construction, subsequent casting forms construction joint, and construction joint is made to be staggered at Bearing Seat Force, there is no problem for stair stress, and seam crossing rubbish is also easier to clear up.
Description
Technical field
The utility model relates to building fields, more particularly to a kind of Novel staircase and including its building.
Background technique
With the continuous development of building structure, the architectural mode in China is mostly using frame-shear structure and the mixed knot of brick at present
Based on structure, therefore, it is typically all the construction method being segmented during stair construction, is easy for go out in this course
The phenomenon that now staying seam due to the problem of constructing, if processing is inappropriate, whole stair will be weaker, gives building building body
Use bring very big security risk, seriously threaten the life security of people.
Cranked slab stairs will prop up, reinforcing bar while constructing This floor framework from the bed die of the cranked slab stairs of this layer of starting
It is reserved away from plate end carriage (to landing beam), concrete is poured together with this layer of structural concrete, until position in plate span centre 1/3
It sets, stays construction joint.When upper one layer of structure to be onstructed, in the template for installing remaining stair to the structural elevation constructed now, simultaneously
The look-ahead portion described above is paid, casting concrete is recycled down with this.
But the setting-up of construction joint of the prior art is at root (at support), less meets that (but specification is nor must with specification
Must be located at smallest shearing force), if management disagrees, joint bar, node reinforcement certainly will be increased；Joint bar setting-out is difficult, it is necessary to first match
Plate plugs muscle hole, otherwise may template steel pipe, can not stay at lumps of wood reinforcing and set joint bar, pullout tests are done in bar planting after causing；
Expense increases.Secondly:
1. it is not in place that reinforced concrete stairs construction joint new-old concrete contacts surface treatment.The defect is to concrete surface
Intensity and the globality of new-old concrete contact surface be affected.
2. thickness of protection tier does not meet code requirement.Protective layer thickness is excessive, will affect the performance of reinforcement property；And
It is too small to be easy to aoxidize reinforcing bar, it has a certain impact to the durability of stair.
3. there are saggings for young concrete.The phenomenon will affect perception, make troubles to follow-up work, cause people
Work picks the waste of chisel and material.4. the bottom of new-old concrete contact surface there are sandstone slag inclusion, with the presence of even construction joint
The defect.After form removable, stone, the grains of sand touch to fall with boring tool one is picked, reinforcing steel bars exposed, come to staircase structure safety belt hidden
Suffer from.
5. concrete surface moistens degree deficiency before pouring, it is easy to produce contraction fissure.
6. conserving undesirable, concreting is finished, and takes effective maintenance measure not in time, makes newly to pour coagulation
Native dehydration is too early, generates the defects of reducing concrete strength and construction joint there are contraction fissures.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of construction joints that can reduce to the new of stair stressing influence
Type stair and building including it.
In order to solve the above technical problems, the technical scheme that the utility model is provided is as follows:
On the one hand, the utility model provides a kind of Novel staircase, including stair stringer, sets in 2/3 eminence of the stair stringer
There is construction joint, the joint face of the construction joint is parallel to horizontal plane.
Further, the height of the joint face is higher than the height of downlink gangboard.
Further, the construction joint connects stubble by carrying out again after pouring after downlink gangboard has poured to stair stringer part
Pour the construction joint to be formed.
Further, it connects under batch position upper layer is controlled with mould along length in 100mm~150mm.
Further, batch concrete is connect to match identical mortar at construction joint.
On the other hand, a kind of building is provided, equipped with the Novel staircase.
By adopting such a design, the utility model at least has the following advantages:
The utility model at stair stringer by being arranged construction joint, and the joint face with prior art construction joint is perpendicular to stair
It axially compares, stair construction joint indwelling has been poured in 2/3 eminence of stair stringer, downlink gangboard, uplink gangboard and terraced beam intersection
Reserving part plate muscle wouldn't pour, and in subsequent construction, subsequent casting forms construction joint, so that construction joint is staggered at Bearing Seat Force, building
There is no problem for terraced stress, and seam crossing rubbish is also easier to clear up.
Detailed description of the invention
Above-mentioned is only the general introduction of technical solutions of the utility model, in order to better understand the technology hand of the utility model
Section, below in conjunction with attached drawing, the utility model is described in further detail with specific embodiment.
Fig. 1 is the structural schematic diagram of the stair construction joint of the prior art；
Fig. 2 is stair inclined plate by shear diagram；
Fig. 3 is the structural schematic diagram of the stair construction joint of the utility model；
Fig. 4 is the stair construction joint position view of the utility model.
Specific embodiment
The exemplary embodiment of the utility model is more fully described below with reference to accompanying drawings.Although showing this in attached drawing
The exemplary embodiment of utility model, it being understood, however, that may be realized in various forms the utility model without should be by here
The embodiment of elaboration is limited.It is to be able to thoroughly understand the utility model, and energy on the contrary, providing these embodiments
It is enough that the scope of the utility model is communicated completely into those skilled in the art.
The utility model provides a kind of Novel staircase, as shown in Figures 2 to 4, including stair stringer 1, the 2/3 of stair stringer 1
Eminence is equipped with construction joint 11, and the joint face of construction joint 11 is parallel to horizontal plane.
The use of the new type is equipped with construction joint in 2/3 eminence of stair stringer, has poured in downlink gangboard, uplink gangboard and terraced beam
Intersection reserves part plate muscle and wouldn't pour, in subsequent construction subsequent casting formed construction joint, make construction joint be staggered support by
At power, there is no problem for stair stress, and seam crossing rubbish is also easier to clear up.
The construction joint of the prior art such as Fig. 1, the joint face of the construction joint 10 of the prior art are oblique perpendicular to stair inclined plate
Axial, construction joint makes the weak spot in structural elements, if construction joint malposition, it is possible to cause safely to overall structure
Certain influence, and the construction joint of the utility model is located on stair stringer, as shown in figure 3, having been poured in downlink gangboard, uplink ladder
Plate reserves part plate muscle with terraced beam intersection and wouldn't pour, and in subsequent construction, subsequent casting forms construction joint, keeps construction joint wrong
It opens at Bearing Seat Force, there is no problem for stair stress, and seam crossing rubbish is also easier to clear up.
Further, the height of joint face is higher than the height of downlink gangboard, about the 1/3 of step height.
Further, construction joint 11 after pouring 1 part of stair stringer after downlink gangboard has poured by carrying out connecing stubble again
Pour the construction joint to be formed.It is the primary cast-in-place concrete 111 of lower layer's floor in the lower section of construction joint, is in the top of construction joint
The concrete 112 of after-pouring, makes it form horizontal construction joint at stair stringer.
Further, it connects under batch position upper layer is controlled with mould 2 along length A in 100mm~150mm, as shown in figure 3, matching mould 2
It is lower along length A between 100mm~150mm.Downward too long, it is inadequate to connect the lateral fastening force in batch position, and it is swollen to be easy to produce root
Mould phenomenon, it is downward it is too short then may because template have enough to meet the need repeatedly, edge breakage generate dew slurry, phenomenon of shedding tears.
Further, batch concrete is connect to match identical mortar at construction joint 11.
On the other hand, a kind of building is provided, equipped with the Novel staircase.
The construction joint of the utility model be horizontal construction joint, influence of the construction joint to stair stress can be reduced, by
Indwelling construction joint on stair stringer makes the once cast-in-place completion of lower layer's staircase boards, reduces influence of the construction joint to stair stress.
The processing of construction joint includes: 1) reinforcement: being arranged by drawing slab muscle every a cloth one at construction joint position.Every end is protruded into
Concrete 500mm.2) processing of concrete junction: after 1. standing the concrete final set of seam surface dabbing method, when allowing demoulding gently by the gear in the face of stitching
Plate is removed, and with axe or steel pole is cut by surface dabbing, cleaning loosens stone, and concrete strength is very low at this time, is dug deep 20~30MM and is easier to,
When it is secondary pour concrete when, seam face is rinsed well with pressure water in advance, when pouring brush plain-water slurry together, to enhance bite force.
2. removing laitance method when the concrete scale of construction is smaller, simple method, which is plasterer's trowel, scrapes off one layer, depth < 25MM for the laitance on surface, and
It digs and extrudes striated, the bond quality of horizontal construction joint can be improved, new and old concrete is combined advantageous.
Compared with disposable cast-in-place structural, construction joint brings certain harm to the globality of structure for the harm of construction joint,
This is because the final set of the first subsurface is poured for the second time there are cold seam on the section Shi Yuan, new and old section cohesive force is cut
It is weak, the bearing capacity of structure is reduced, so strictly to construct as required to following common problem in the construction process.
In treatment of construction joints it should be noted that 1) beam because arrangement of reinforcement it is more, the fixed difficulty of plug plate is big, and supporting is not tight, often
Construction joint forms the R-joining of approximate step, and irregular portion outstanding is divided into weakness.From its surface analysis, part outstanding is more
Loosely lack coarse aggregate, intensity bottom for the mortar promoted when vibration；When pouring again for the second time, newly enter the concrete self weight and punching of mould
Power is hit, the lower protrusion of rigidity can be made vacantly locally to crush or generate crack, forms stealthy internal injury.In the construction of beam, plate
The external crack to extend out is very easy to find at seam, so plug plate must strictly fixed and supporting as required.2) it constructs
Stitch indwelling position inaccuracy.Do not construct by the specific size of arrangement and method for construction.Cause construction joint not at the smallest position of stress
Indwelling causes a hidden trouble safely to structure, so site construction management personnel are to construction worker strictly by arrangement and method for construction requirement.3) it connects
When stubble pours, construction joint sundries is not cleaned out；Dabbing is not thorough, and concrete surface laitance is not cleared up in place；It waters inabundant
It is wet, cause the reduction of new-old concrete bite force.So site administrator requires construction worker in strict accordance with arrangement and method for construction.
4) stair construction joint connects batch position and determines: stair connect stubble when constructing on beam, and stair are considered that plate is at both ends in beam by board member
Upper is support, snaps into half in beam, is also convenient for constructing in this way, herein not supergage requirement.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above,
It falls within the protection scope of the present utility model.
Claims (6)
1. a kind of Novel staircase, including stair stringer, which is characterized in that it is equipped with construction joint in 2/3 eminence of the stair stringer, it is described
The joint face of construction joint is parallel to horizontal plane.
2. Novel staircase according to claim 1, which is characterized in that the height of the joint face is higher than the height of downlink gangboard
Degree.
3. Novel staircase according to claim 1, which is characterized in that the construction joint passes through after downlink gangboard has poured
The construction joint of subsequent casting formation is carried out after pouring to stair stringer part again.
4. Novel staircase according to claim 3, which is characterized in that connect under batch position upper layer is controlled with mould and exist along length
150mm~200mm.
5. Novel staircase according to any one of claims 1 to 4, which is characterized in that at construction joint connect batch concrete be with
Than identical mortar.
6. a kind of building, which is characterized in that equipped with any Novel staircase of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920197550.5U CN209523408U (en) | 2019-02-14 | 2019-02-14 | A kind of Novel staircase and the building including it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920197550.5U CN209523408U (en) | 2019-02-14 | 2019-02-14 | A kind of Novel staircase and the building including it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209523408U true CN209523408U (en) | 2019-10-22 |
Family
ID=68230697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920197550.5U Expired - Fee Related CN209523408U (en) | 2019-02-14 | 2019-02-14 | A kind of Novel staircase and the building including it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209523408U (en) |
-
2019
- 2019-02-14 CN CN201920197550.5U patent/CN209523408U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191022 |