CN113738107A - Steel beam filling method based on inorganic material injection - Google Patents
Steel beam filling method based on inorganic material injection Download PDFInfo
- Publication number
- CN113738107A CN113738107A CN202110798757.XA CN202110798757A CN113738107A CN 113738107 A CN113738107 A CN 113738107A CN 202110798757 A CN202110798757 A CN 202110798757A CN 113738107 A CN113738107 A CN 113738107A
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- China
- Prior art keywords
- steel beam
- rock wool
- web plate
- shaped
- filling
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 56
- 239000010959 steel Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910010272 inorganic material Inorganic materials 0.000 title claims abstract description 12
- 239000011147 inorganic material Substances 0.000 title claims abstract description 12
- 238000002347 injection Methods 0.000 title claims abstract description 7
- 239000007924 injection Substances 0.000 title claims abstract description 7
- 238000010276 construction Methods 0.000 claims abstract description 21
- 239000011490 mineral wool Substances 0.000 claims abstract description 21
- 239000011426 gypsum mortar Substances 0.000 claims abstract description 20
- 238000005452 bending Methods 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
-
- 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
- E04B1/941—Building elements specially adapted therefor
- E04B1/943—Building elements specially adapted therefor elongated
- E04B1/944—Building elements specially adapted therefor elongated covered with fire-proofing material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0296—Repairing or restoring facades
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Ceramic Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a steel beam filling method based on inorganic material injection, which comprises the steps of firstly, pre-filling rock wool layers on two sides of a web plate of an H-shaped steel beam, wherein the filling thickness of the rock wool layers is smaller than the extension widths of upper and lower flanges of the H-shaped steel beam on the two sides of the web plate; welding a plurality of C-shaped stirrups outside the rock wool layer on each side of the web plate along the length direction of the steel beam, welding the top surfaces of upper bending parts of the C-shaped stirrups on the bottom surface of an upper flange of the steel beam, welding the bottom surfaces of lower bending parts of the C-shaped stirrups on the top surface of a lower flange of the steel beam, and jointly forming clamping limit on the rock wool layer by the inner side edge of the upper bending part, the inner side edge of the lower bending part and the web plate; spraying fireproof gypsum mortar to the outside of the rock wool layer on each side to coat the C-shaped stirrup in a construction site, and spraying the fireproof gypsum mortar to be flush with the side end faces of the upper flange and the lower flange; and fiber reinforced fireproof gypsum mortar is sprayed outside the fireproof gypsum mortar on each side. The invention has the characteristics of high construction efficiency, simplified construction operation procedure, low construction cost and avoidance of apparent cracking.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a steel beam filling method based on inorganic material spraying.
Background
The precast beam is a key component in an assembly type building, an H-shaped steel beam is often adopted, and because two side surfaces of an H-shaped steel web are cavities, inconvenience is brought to indoor decoration in a residential building, and the cavities on the side surfaces of the H-shaped steel are often required to be filled. When the side face of the H-shaped steel web is filled, the filling mode and the selectivity of the filled substances are many, and the selection result is closely related to the construction cost and the functional characteristics of the filled steel beam.
At present, in the building industry, the common method mainly adopts brick blocks for filling, for example, the invention patent with the publication number of CN204826404U discloses 'steel beams filled with the blocks', because the size and the variety of the steel beams are more, the cutting of the aerated block and the gypsum board wastes time and labor, the filling process is quite complicated, the construction period is long, the cost is high, and the noise and the dust generated in the processing process can influence the health of constructors; and, the filling compactness by adopting the building blocks is also poor.
Except for the filling mode and the effect of the precast beam, the fireproof problem of the precast beam also needs to be considered, the existing steel beam usually adopts the mode of spraying fireproof paint and coating mortar to achieve the fireproof purpose, and the two processes need long operation time, so that the operation continuity is poor, and the construction progress is influenced. The inventor proposes a steel beam filling method based on inorganic material spraying, which can simplify the field operation amount and the filling process, and the scheme is generated thereby.
Disclosure of Invention
The invention discloses a steel beam filling method based on inorganic material injection, which has the characteristics of time saving, low cost and simplified workload, and is realized by the following technical scheme:
a steel beam filling method based on inorganic material spraying comprises the following steps:
step 1: rock wool layers are pre-filled on two sides of a web plate of the H-shaped steel girder, the filling thickness of the rock wool layers is smaller than the extending width of upper and lower flanges of the H-shaped steel girder on the two sides of the web plate, and the step is finished in a factory;
step 2: welding a plurality of C-shaped stirrups outside the rock wool layer on each side of the web plate along the length direction of the steel beam, welding the top surfaces of upper bending parts of the C-shaped stirrups on the bottom surface of an upper flange of the steel beam, welding the bottom surfaces of lower bending parts of the C-shaped stirrups on the top surface of a lower flange of the steel beam, and jointly forming clamping limit on the rock wool layer by the inner side edge of the upper bending part, the inner side edge of the lower bending part and the web plate;
and step 3: and fireproof gypsum mortar is sprayed to the outer part of the rock wool layer at each side in a construction site to coat the C-shaped hooping, and the fireproof gypsum mortar is sprayed to be flush with the side end faces of the upper flange and the lower flange.
Further, after the step 3 is finished, spraying fiber reinforced fireproof gypsum mortar outside the fireproof gypsum mortar on each side of the construction site.
Further, before the step 1 is executed, stiffening plates are respectively welded between the upper flange and the lower flange at the two ends of the steel beam, the stiffening plates are respectively vertical to the upper flange, the lower flange and the web plate, and the rock wool layer is filled between the two stiffening plates.
Furthermore, a web plate on the outer side of the stiffening plate is provided with a mounting hole.
The invention adopts the technology of combining factory pre-filling and field spraying of fireproof gypsum mortar to complete the filling of the precast beam, does not need to cut the aerated block and the gypsum board, can reduce the construction noise and dust, and improves the construction efficiency; the filling and the fireproof process are integrally formed, so that the construction operation procedure is simplified, and the construction cost is reduced; the outer layer is sprayed with the fiber reinforced fireproof gypsum mortar, so that the apparent cracking caused by the deformation of the precast beam can be prevented, and the apparent quality is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a steel beam filled by the filling method of the present invention;
fig. 2 is a front view of fig. 1.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The embodiment discloses a steel beam filling method based on inorganic material spraying, and the effect of the steel beam after being filled according to the filling method is shown in figures 1 and 2. The girder steel in this embodiment adopts H shaped steel girder steel, and the girder steel comprises top flange 1, bottom flange 2 and web 3, and top flange 1 and bottom flange 2 parallel arrangement from top to bottom, web 3 are located the middle part and link together top flange 1 and bottom flange 2, and the both sides of web 3 form the cavity structure and need fill. The method for filling the steel beam structure comprises the following specific steps: firstly, in order to connect steel beams, mounting holes 8 need to be formed in the web plates 3 at the end parts of each steel beam, stiffening plates 9 are respectively welded between the upper flanges 1 and the lower flanges 2 at the two ends of each steel beam, the stiffening plates 9 are respectively vertical to the upper flanges, the lower flanges and the web plates 3, and the stiffening plates 9 not only play a role in strengthening the strength of the connecting joints at the end parts of the steel beams, but also can separate filling areas inside the steel beams. And a cavity surrounded by the two stiffening plates 9 and the web plate 3 on each side is filled with a cement-based rock wool layer 4, and the filling thickness of the rock wool layer 4 is smaller than the extension width of the upper flange and the lower flange of the steel beam on the two sides of the web plate 3. Next, a plurality of C-shaped stirrups 5 are welded along the length direction of the steel beam outside the rock wool layer 4 on each side of the web plate 3, the top surface of the upper bending part of the C-shaped stirrups 5 is welded on the bottom surface of the upper flange 1 of the steel beam, the bottom surface of the lower bending part of the C-shaped stirrups 5 is welded on the top surface of the lower flange 2 of the steel beam, the inner side of the upper bending part and the inner side of the lower bending part are clamped and limited by the common formation of the web plate 3, and the steps are all prefabricated in a factory. After the stone wool is transported to a construction site, fireproof gypsum mortar 6 is sprayed outside the rock wool layer 4 on each side to coat the C-shaped stirrup 5, and the fireproof gypsum mortar 6 is sprayed to the positions which are flush with the side end faces of the upper flange and the lower flange. And finally, spraying fiber reinforced fireproof gypsum mortar 7 outside the fireproof gypsum mortar 6 on each side to form an anti-crack protective layer.
The steel beam filling method is high in prefabrication degree, and the pre-filling and spraying processes are combined, so that the construction process can be simplified, the construction period can be shortened, the construction cost can be reduced, and the influence of the construction environment on the health of personnel can be reduced. In the fireproof treatment of the steel beam, the sprayed fireproof gypsum mortar 6 is used for replacing the traditional fireproof coating and plastering mortar structure, so that the construction procedures can be reduced while the fireproof performance is ensured. The invention also utilizes the function of preventing cracks of the fibers in the sprayed fiber reinforced fireproof gypsum mortar 7 to improve the apparent quality of the steel beam.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A steel beam filling method based on inorganic material spraying is characterized in that: the method comprises the following steps:
step 1: rock wool layers are pre-filled on two sides of a web plate of the H-shaped steel girder, the filling thickness of the rock wool layers is smaller than the extending width of upper and lower flanges of the H-shaped steel girder on the two sides of the web plate, and the step is finished in a factory;
step 2: welding a plurality of C-shaped stirrups outside the rock wool layer on each side of the web plate along the length direction of the steel beam, welding the top surfaces of upper bending parts of the C-shaped stirrups on the bottom surface of an upper flange of the steel beam, welding the bottom surfaces of lower bending parts of the C-shaped stirrups on the top surface of a lower flange of the steel beam, and jointly forming clamping limit on the rock wool layer by the inner side edge of the upper bending part, the inner side edge of the lower bending part and the web plate;
and step 3: and fireproof gypsum mortar is sprayed to the outer part of the rock wool layer at each side in a construction site to coat the C-shaped hooping, and the fireproof gypsum mortar is sprayed to be flush with the side end faces of the upper flange and the lower flange.
2. The method for filling a steel beam based on inorganic material injection as claimed in claim 1, wherein: and after the step 3 is finished, spraying fiber reinforced fireproof gypsum mortar outside the fireproof gypsum mortar on each side of the construction site.
3. The method for filling a steel beam based on inorganic material injection as claimed in claim 1, wherein: before the step 1 is executed, stiffening plates are respectively welded between the upper flange and the lower flange at the two ends of the steel beam, the stiffening plates are respectively vertical to the upper flange, the lower flange and the web plate, and the rock wool layer is filled between the two stiffening plates.
4. The method for filling a steel beam based on inorganic material injection as claimed in claim 3, wherein: the web plate on the outer side of the stiffening plate is provided with a mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110798757.XA CN113738107A (en) | 2021-07-15 | 2021-07-15 | Steel beam filling method based on inorganic material injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110798757.XA CN113738107A (en) | 2021-07-15 | 2021-07-15 | Steel beam filling method based on inorganic material injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113738107A true CN113738107A (en) | 2021-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110798757.XA Pending CN113738107A (en) | 2021-07-15 | 2021-07-15 | Steel beam filling method based on inorganic material injection |
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| CN (1) | CN113738107A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829864A1 (en) * | 1977-07-12 | 1979-02-01 | Arbed | COMPOSITE BEAM |
| DE102012107087A1 (en) * | 2012-08-02 | 2014-02-06 | Lindner Ag | Elongated component e.g. steel girder installed in ceiling, has component main portion that is covered with fire protection layer which is provided with network-or grid-shaped reinforcing insert |
| CN205046685U (en) * | 2015-08-29 | 2016-02-24 | 长春工程学院 | External heated board of prefabricated masonry wall |
| CN109184076A (en) * | 2018-11-09 | 2019-01-11 | 福建省建筑设计研究院有限公司 | One kind partly combining prefabricated assembled beam and preparation method thereof and design method |
| CN208545877U (en) * | 2018-06-15 | 2019-02-26 | 绍兴精工绿筑集成建筑系统工业有限公司 | A kind of steel building self-heat conserving beam |
| CN211775096U (en) * | 2020-02-18 | 2020-10-27 | 孙叶根 | Fire prevention anticorrosive heat preservation decorates integration H shaped steel roof beam |
| CN112922230A (en) * | 2021-03-31 | 2021-06-08 | 中国建筑西北设计研究院有限公司 | Section steel partially-wrapped concrete composite beam and design and construction method thereof |
-
2021
- 2021-07-15 CN CN202110798757.XA patent/CN113738107A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829864A1 (en) * | 1977-07-12 | 1979-02-01 | Arbed | COMPOSITE BEAM |
| DE102012107087A1 (en) * | 2012-08-02 | 2014-02-06 | Lindner Ag | Elongated component e.g. steel girder installed in ceiling, has component main portion that is covered with fire protection layer which is provided with network-or grid-shaped reinforcing insert |
| CN205046685U (en) * | 2015-08-29 | 2016-02-24 | 长春工程学院 | External heated board of prefabricated masonry wall |
| CN208545877U (en) * | 2018-06-15 | 2019-02-26 | 绍兴精工绿筑集成建筑系统工业有限公司 | A kind of steel building self-heat conserving beam |
| CN109184076A (en) * | 2018-11-09 | 2019-01-11 | 福建省建筑设计研究院有限公司 | One kind partly combining prefabricated assembled beam and preparation method thereof and design method |
| CN211775096U (en) * | 2020-02-18 | 2020-10-27 | 孙叶根 | Fire prevention anticorrosive heat preservation decorates integration H shaped steel roof beam |
| CN112922230A (en) * | 2021-03-31 | 2021-06-08 | 中国建筑西北设计研究院有限公司 | Section steel partially-wrapped concrete composite beam and design and construction method thereof |
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Application publication date: 20211203 |
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