CN108951904A - A kind of steel core concrete column outsourcing pea gravel concreten fireprotection layer construction - Google Patents
A kind of steel core concrete column outsourcing pea gravel concreten fireprotection layer construction Download PDFInfo
- Publication number
- CN108951904A CN108951904A CN201810926221.XA CN201810926221A CN108951904A CN 108951904 A CN108951904 A CN 108951904A CN 201810926221 A CN201810926221 A CN 201810926221A CN 108951904 A CN108951904 A CN 108951904A
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- CN
- China
- Prior art keywords
- steel
- steel pipe
- pipe column
- fireprotection layer
- core concrete
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
Abstract
The invention discloses one of the realm of building construction steel core concrete column outsourcing pea gravel concreten fireprotection layer construction, including the derusting of steel pipe column outer wall, brushing antirust paint, welding mark steel bar end, reinforced mesh production and installation, cement sand bed is smeared, steel wire is hung, smears cement sand bed and sprinkling maintenance.The present invention not only ensure that the appearance looks elegant on anisotropic surface, also ensure fireprotection layer mortar homogeneous, closely knit, quality controllable, and material prepares simple, operation and is easy, is low in cost, and the present invention achieves apparent effect in presentation quality, duration and benefit.
Description
Technical field
The present invention relates to the realm of building construction, in particular to a kind of steel core concrete column outsourcing pea gravel concreten
Fireprotection layer construction.
Background technique
With social progress, the development of building level is rushed, and the fire prevention of building and explosion-proof performance are increasingly subject to the pass of people
Note, thus it is also more and more to the fire protecting performance research of reinforced concrete member, and fire resistance is also increasingly by people's
Pay attention to.
Steel core concrete column refers to the fill concrete in steel pipe and is formed, with bearing capacity is high, ductility is good, shock resistance
It can the series of advantages such as superior.In recent years, as infrastructure cause large area in China's is carried out, steel core concrete column has been obtained extensively
How general utilization carries out the construction of steel core concrete column outsourcing fireprotection layer, to the fire resistance and durability of steel core concrete column
It is most important.
In work progress in the prior art, fireprotection layer only is coated in the outside of steel core concrete column, with steel pipe
The connection of concrete is discontinuous, globality poor, and individually fireprotection layer structure has weaker fire protecting performance, is unfavorable for entirely applying
Work engineering is gone on smoothly.
Drawbacks described above is worth solving.
Summary of the invention
In order to overcome the shortcomings of that existing technology, the present invention provide a kind of steel core concrete column outsourcing pea gravel concreten fire prevention
Layer construction.
Technical solution of the present invention is as described below:
A kind of steel core concrete column outsourcing pea gravel concreten fireprotection layer construction, which comprises the following steps:
S1, the derusting of steel pipe column outer wall: steel pipe column outer wall carries out big face processing of rust removing using sander, and part manually uses steel
Wire brush is removed；
S2, brushing antirust paint: after steel pipe column outer wall derusting, brushing antirust paint from top to bottom；
S3, welding mark steel bar end: steel bar end is welded on steel pipe column after having derusted, when welding, the end of crotch is upward；
The production and installation of S4, reinforced mesh: the reinforced mesh includes vertical reinforcement and circumferential reinforcement, and the reinforced mesh exists
Reinforcing bar factory welding processing is simultaneously transported at the steel pipe column, and the mesh sheet of sheet is described on the steel pipe column around simultaneously lock ring
Circumferential reinforcement uses single welded lap reinforcing bar；
S5, cement sand bed is smeared for the first time: before applying mortar, first moistening the steel pipe column water-wet, it is rear to smear 25mm thickness
Deployed cement mortar, be firmly compacted when smearing, so that mortar is fitted closely with the steel pipe column.
S6, it hangs steel wire: after the completion of first time cement sand bed is smeared, hanging steel wire immediately, the steel wire passes through
The steel bar end, the steel wire are connected by tied silk and steel bar end binding；
Cement sand bed is smeared in S7, second: the steel wire net laying smears cement mortar again after hanging into, after the completion of smearing
One layer of cement slurry of whole steel pipe column external coating；
S8, sprinkling maintenance: sprinkling maintenance is carried out after completing construction, curing time is not less than 7 days.
According to the present invention of above scheme, which is characterized in that in the step S2, antirust paint is epoxy zinc-rich paint.
According to the present invention of above scheme, which is characterized in that in the step S2, the brushing of point 3 progress antirust paints.
According to the present invention of above scheme, which is characterized in that in the step S3, along the radial direction side of the steel pipe column
To every the steel bar end of 2m one ring of setting, adjacent two rings steel bar end offset angular is 45 degree.
Further, 4 are uniformly arranged on steel bar end circumferential direction direction.
According to the present invention of above scheme, which is characterized in that be welded with mortar layer thickness control mark on the steel bar end.
According to the present invention of above scheme, which is characterized in that in the step S4, the reinforced mesh surrounds process
Described in vertical reinforcement and the circumferential reinforcement there is solder joint desoldering, then reinforced using improving bud grafting, the reinforced mesh
It is close to after banding with the steel pipe column.
According to the present invention of above scheme, which is characterized in that the raw material proportioning of the cement mortar are as follows: cement 0.55t: sand
1.1m3: water 0.3m3。
According to the present invention of above scheme, which is characterized in that in the step S5, carrying out smearing the time-division two for the first time
Layer carries out, and the smearing of the second layer is carried out when first layer 6 seventy percent is dry.
According to the present invention of above scheme, which is characterized in that in the step S6, the steel wire is apart from the steel pipe
Column surface 30mm.
According to the present invention of above scheme, which is characterized in that the steel pipe in the step S8, after the completion of construction
Column surface hangs geotextiles, moist curing of sprinkling water afterwards.
According to the present invention of above scheme, the beneficial effect is that:
1, good integrity: reinforcing bar and concrete have approximately uniform linear expansion coefficient, and excessive answer will not be generated by environment difference
Power has good cohesive force and forms unified entirety between reinforcing bar and concrete；Steel tensile strength height can effectively make up
The low feature of concrete tensile strength, the effective development for inhibiting concrete surface crack, while preventing concrete due to high temperature
It bursts.
2, fire endurance is high: cement mortar specific heat capacity is big, heating is slow, effectively heat can be delayed to conduct, and slows down steel pipe heating
Time optimizes fire heating curve, improves steel core concrete column fire endurance.
3, safety and environmental protection: concrete fireproof layer does not discharge toxic in construction, under normal use environment and high temperature of fire
Substance is conducive to personnel safety when environmental protection and fire.
4, the more traditional pea gravel concreten surrounding layer of cement mortar surrounding layer, the work progress of no template installation saved at
This, shortens the duration.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Specific embodiment
With reference to the accompanying drawing and the present invention is further described in embodiment:
As shown in Figure 1, a kind of steel core concrete column outsourcing pea gravel concreten fireprotection layer construction, including steel pipe column outer wall remove
Rust, brushing antirust paint, welding mark steel bar end, reinforced mesh production and installation smear cement sand bed, hang steel wire, smear
Cement sand bed and sprinkling maintenance and etc..
1, steel pipe column outer wall derusts
Steel pipe column outer wall first uses sander to carry out big face processing of rust removing, can not locally clear up position and manually use wire brush clear
It removes.First clear all thick rusty scale, visible oil, rouge and dirt, is cleared up using craft and power tool, is removing surface after cleaning
Floating ash and clast.
2, brushing antirust paint
After every steel pipe column outer wall derusting, point 3 brushing epoxy zinc-rich paints are brushed uniform from top to bottom every time.
3, welding mark steel bar end
Sufficient amount of 8 steel bar end of Ф is processed in reinforcement yard, steel bar end is welded on steel pipe column after having derusted, faces steel pipe
25mm sections of column column with huge column is two-sided is fully welded, the end of crotch is upward, and steel bar end circumferential direction is uniformly arranged 4, radial to be arranged every 2m
One ring, adjacent two rings steel bar end are staggered 45 °.
It is respectively 30mm, 20mm that mortar layer thickness control mark is welded on steel bar end.
4, reinforced mesh production and installation
For reinforced mesh in reinforcing bar factory welding processing, vertical reinforcement is 10 8 reinforcing bars of Ф (being evenly arranged), and circumferential reinforcement uses 8@of Ф
500.Circumferential reinforcement cutting length considers 10d(80mm) overlap joint welding length, i.e. circumferential reinforcement length=circumferential reinforcement central axis
Line perimeter+10d；Spacing between the middle plate of plate-top plate and bottom plate-in vertical reinforcement blanking consideration, length should be than distance between the two
Few 3cm guarantees that reinforced mesh can be fixed snugly around steel pipe column.
It after reinforced mesh processes, is transported at steel pipe column, sheet mesh sheet is surrounded and lock ring is on steel pipe column, circumferential steel
Muscle lap-joint uses single welding.Such as vertical reinforcement and circumferential reinforcement part solder joint desoldering during, then improving bud grafting is used
It reinforces, is close to after mesh sheet banding with steel pipe column.
5, cement sand bed is smeared for the first time
(1) mortar mixing
1:2 cement mortar a variety of materials proportion are as follows: cement 0.55t: sand 1.1m3: water 0.3m3, the consistency according to the form below of plastering mortar
It chooses:
| Coat of plaster | It constructs consistency (mm) |
| Bottom | 90-110 |
| Middle layer | 70-90 |
| Surface layer | 70-80 |
(2) cement sand bed is smeared
Before applying mortar, steel pipe column need to be moistened with water, be smeared from the bottom up using trowel afterwards.
First time smearing thickness about 25mm or so, steel mesh lamella all cover, are firmly compacted when smearing, make sand
It starches closely connected with steel pipe column.If primary smear the thickness for being unable to reach 25mm or so, divide render and set, it is dry to preceding layer 6 seventy percent
When, then carry out two layers of smearing；If preceding layer is excessively dry, first watering is wet, then smears second layer cement mortar.
6, steel wire is hung
First layer mortar hangs 16# steel wire immediately after smearing, steel wire passes through steel bar end, using tied silk and layering steel bar end binding
Securely, the steel wire distance post surface of 50 thick mortar fireprotection layers is 30mm.
7, cement sand bed is smeared second
After steel wire net laying is hung, applying mortar layer again.If a preceding applying mortar layer surface has been dried, then need to pour water-wet
Secondary smearing is carried out after profit again, cement mortar fireprotection layer thickness is controlled by steel bar end.
After surface layer screed has been smeared, one layer of 42.5R cement slurry is brushed whole steel pipe column screed outer surface with brush, to protect
Demonstrate,prove outer surface circularity and smooth degree.
8, sprinkling maintenance
After the completion of fireproof mortar construction, send special messenger using conserving, curing time is no less than 7d.It is specific: to use and hang soil
Work cloth, moist curing method of sprinkling water, guarantees basal plane constant moisture.
The present invention physically uses sliding mode technology in steel pipe column appearance for the first time, not only ensure that the appearance beauty on steel pipe column surface
It sees, also ensures fireprotection layer mortar homogeneous, closely knit, quality controllable；Material of the invention prepares simple, operation and is easy, is at low cost
It is honest and clean；It is tested and is adjusted in the proportion of fireprotection layer cement mortar, it is ensured that appearance color is consistent with main structure, whole to incorporate
Sense is strong, while guaranteeing that mortar quality does not crack, and shrinkage meets design requirement；The present invention is in presentation quality, duration and benefit
On achieve apparent effect.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Illustrative description has been carried out to the invention patent above in conjunction with attached drawing, it is clear that the realization of the invention patent not by
The limitation of aforesaid way, if the method concept of the invention patent and the various improvement of technical solution progress are used, or without
It improves and the conception and technical scheme of the invention patent is directly applied into other occasions, be within the scope of the invention.
Claims (9)
1. a kind of steel core concrete column outsourcing pea gravel concreten fireprotection layer construction, which comprises the following steps:
S1, the derusting of steel pipe column outer wall: the steel pipe column outer wall carries out big face processing of rust removing using sander, and part is manually adopted
It is removed with wire brush；
S2, brushing antirust paint: after steel pipe column outer wall derusting, brushing antirust paint from top to bottom；
S3, welding mark steel bar end: steel bar end is welded on steel pipe column after having derusted, when welding, the end of crotch is upward；
The production and installation of S4, reinforced mesh: the reinforced mesh includes vertical reinforcement and circumferential reinforcement, and the reinforced mesh exists
Reinforcing bar factory welding processing is simultaneously transported at the steel pipe column, and the mesh sheet of sheet is described on the steel pipe column around simultaneously lock ring
Circumferential reinforcement uses single welded lap reinforcing bar；
S5, cement sand bed is smeared for the first time: before applying mortar, first moistening the steel pipe column water-wet, it is rear to smear 25mm thickness
Deployed cement mortar, be firmly compacted when smearing, so that mortar is fitted closely with the steel pipe column；
S6, it hangs steel wire: after the completion of first time cement sand bed is smeared, hanging steel wire immediately, the steel wire passes through described
Steel bar end, the steel wire are connected by tied silk and steel bar end binding；
Cement sand bed is smeared in S7, second: the steel wire net laying smears cement mortar again after hanging into, after the completion of smearing
One layer of cement slurry of whole steel pipe column external coating；
S8, sprinkling maintenance: sprinkling maintenance is carried out after completing construction, curing time is not less than 7 days.
2. steel core concrete column outsourcing pea gravel concreten fireprotection layer construction according to claim 1, which is characterized in that
In the step S2, antirust paint is epoxy zinc-rich paint.
3. steel core concrete column outsourcing pea gravel concreten fireprotection layer construction according to claim 1, which is characterized in that
In the step S2, the brushing of point 3 progress antirust paints.
4. steel core concrete column outsourcing pea gravel concreten fireprotection layer construction according to claim 1, which is characterized in that
Mortar layer thickness control mark is welded on the steel bar end.
5. steel core concrete column outsourcing pea gravel concreten fireprotection layer construction according to claim 1, which is characterized in that
In the step S4, during the surrounding of the reinforced mesh, it is de- that solder joint occur in the vertical reinforcement and the circumferential reinforcement
Weldering is then reinforced using improving bud grafting, and the reinforced mesh is close to after banding with the steel pipe column.
6. steel core concrete column outsourcing pea gravel concreten fireprotection layer construction according to claim 1, which is characterized in that
The raw material proportioning of the cement mortar are as follows: cement 0.55t: sand 1.1m3: water 0.3m3。
7. steel core concrete column outsourcing pea gravel concreten fireprotection layer construction according to claim 1, which is characterized in that
In the step S5, is carrying out smearing two layers of time-division progress for the first time, the smearing of the second layer is carried out when first layer 6 seventy percent is dry.
8. steel core concrete column outsourcing pea gravel concreten fireprotection layer construction according to claim 1, which is characterized in that
In the step S6, the steel wire is apart from the steel pipe column surface 30mm.
9. steel core concrete column outsourcing pea gravel concreten fireprotection layer construction according to claim 1, which is characterized in that
In the step S8, steel pipe column surface after the completion of construction hangs geotextiles, moist curing of sprinkling water afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810926221.XA CN108951904A (en) | 2018-08-15 | 2018-08-15 | A kind of steel core concrete column outsourcing pea gravel concreten fireprotection layer construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810926221.XA CN108951904A (en) | 2018-08-15 | 2018-08-15 | A kind of steel core concrete column outsourcing pea gravel concreten fireprotection layer construction |
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| Publication Number | Publication Date |
|---|---|
| CN108951904A true CN108951904A (en) | 2018-12-07 |
Family
ID=64469948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810926221.XA Pending CN108951904A (en) | 2018-08-15 | 2018-08-15 | A kind of steel core concrete column outsourcing pea gravel concreten fireprotection layer construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130600A (en) * | 2019-06-05 | 2019-08-16 | 六合峰（天津）科技股份有限公司 | A kind of TCP steel pipe column engraving facing subsection connecting structure and attaching method thereof |
| CN111927051A (en) * | 2020-07-02 | 2020-11-13 | 中铁二局第三工程有限公司 | Super-thick cement mortar coating construction method for profile steel structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2740705Y (en) * | 2003-12-09 | 2005-11-16 | 韩林海 | Fireproof technology of steel pipe concrete |
| CN203834842U (en) * | 2014-03-28 | 2014-09-17 | 河南杭萧钢构有限公司 | Decoration node for steel column, after sprayed with fire retardant coating, of steel-structure building |
| CN104947808A (en) * | 2015-05-08 | 2015-09-30 | 青岛华联装饰工程有限公司 | Building exterior wall steel structure derusting method |
| CN105113651A (en) * | 2015-06-24 | 2015-12-02 | 浙江东南网架股份有限公司 | Steel column protection structure and mortar plastering protection method thereof |
-
2018
- 2018-08-15 CN CN201810926221.XA patent/CN108951904A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2740705Y (en) * | 2003-12-09 | 2005-11-16 | 韩林海 | Fireproof technology of steel pipe concrete |
| CN203834842U (en) * | 2014-03-28 | 2014-09-17 | 河南杭萧钢构有限公司 | Decoration node for steel column, after sprayed with fire retardant coating, of steel-structure building |
| CN104947808A (en) * | 2015-05-08 | 2015-09-30 | 青岛华联装饰工程有限公司 | Building exterior wall steel structure derusting method |
| CN105113651A (en) * | 2015-06-24 | 2015-12-02 | 浙江东南网架股份有限公司 | Steel column protection structure and mortar plastering protection method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130600A (en) * | 2019-06-05 | 2019-08-16 | 六合峰（天津）科技股份有限公司 | A kind of TCP steel pipe column engraving facing subsection connecting structure and attaching method thereof |
| CN111927051A (en) * | 2020-07-02 | 2020-11-13 | 中铁二局第三工程有限公司 | Super-thick cement mortar coating construction method for profile steel structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |
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| RJ01 | Rejection of invention patent application after publication |