CN113982304A - Method for reinforcing existing masonry wall by adopting concrete prefabricated splicing assembly mode - Google Patents
Method for reinforcing existing masonry wall by adopting concrete prefabricated splicing assembly mode Download PDFInfo
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- CN113982304A CN113982304A CN202111247427.8A CN202111247427A CN113982304A CN 113982304 A CN113982304 A CN 113982304A CN 202111247427 A CN202111247427 A CN 202111247427A CN 113982304 A CN113982304 A CN 113982304A
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- 239000004567 concrete Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 38
- 239000000853 adhesive Substances 0.000 claims abstract description 25
- 230000001070 adhesive effect Effects 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000011148 porous material Substances 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000005498 polishing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000001680 brushing effect Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000011449 brick Substances 0.000 abstract description 17
- 238000010276 construction Methods 0.000 abstract description 14
- 239000011150 reinforced concrete Substances 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000004873 anchoring Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 12
- 230000002787 reinforcement Effects 0.000 description 10
- 210000003205 muscle Anatomy 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000011178 precast concrete Substances 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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0222—Replacing or adding wall ties
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
Abstract
The invention relates to the field of building construction, and discloses a method for reinforcing an existing masonry wall by adopting a concrete prefabricated splicing assembly mode, which comprises the following steps: firstly, processing the surface of a masonry, and arranging a drill split connecting pore passage on the masonry by adopting a quincunx arrangement method; coating the adhesive on the surfaces of the masonry base layer and the reinforced concrete prefabricated part; attaching the concrete prefabricated member to a preset position of the surface of the base layer, and applying pressure to the surface of the prefabricated member; after the used adhesive is cured, the clamp is removed; carrying out lap joint treatment on the horizontal distribution ribs and the vertical distribution ribs reserved in the concrete prefabricated part; and grouting the reserved hole channel, and sealing the anchoring connection end. The prefabricated member and the original brick wall are bonded into a whole by using the adhesive and the prestress method, so that the static force and the earthquake resistance of the wall are improved, and the existing masonry structure has better bearing capacity and durability; and only standardized assembly is adopted in the construction process, so that on-site wet operation is greatly reduced, the cost is reduced, and the construction period is shortened.
Description
Technical Field
The invention relates to the field of building construction, in particular to a method for reinforcing an existing masonry wall by adopting a concrete prefabricated splicing assembly mode.
Background
In the construction and use process of buildings, due to the unreasonable structural design, the error of the control level and management of the applied working medium, natural disasters, the change of the use function and other problems, brick walls in the buildings need to be reinforced to meet the design or use requirements.
The common reinforcement methods at present are: reinforcing mesh cement mortar surface layer reinforcing method, reinforcing reinforced concrete surface layer reinforcing method, externally-wrapped steel reinforcing method, externally-applied prestressed stay bar reinforcing method, bonded carbon fiber composite material reinforcing method and the like. However, the reinforcing mesh cement mortar surface layer reinforcing method and the reinforced concrete surface layer reinforcing method have the disadvantages of large workload of field wet operation, long maintenance time, long construction period, binding of reinforcing steel bars and large use of templates in the reinforcing process, dismantling of the templates after maintenance is completed, wall penetrating treatment in the construction process, certain damage to the original components, and high labor, material and time costs; the steel consumption of the steel-outsourcing method is large, the reinforcing cost is high, welding is needed on site, and the fire resistance is poor.
The assembly type building is one of the key supporting development directions in China at present, and accords with the concept of sustainable development, energy conservation and environmental protection. At present, fabricated buildings are popularized and used in provinces and cities in China, and the newly-built fabricated buildings achieve certain performance, but in the field of reinforcement construction, the traditional construction method is still mainly adopted, and the field wet operation is large.
In recent years, the traditional reinforcement method is improved by the same industry in the industry, various patents are applied, and no energy-saving and environment-friendly reinforcement method capable of reducing field wet operation or reducing steel consumption is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for reinforcing the existing masonry wall by adopting a concrete prefabricated splicing assembly mode.
In order to achieve the purpose, the invention provides a method for reinforcing an existing masonry wall by adopting a concrete prefabricated splicing assembly mode, which adopts the following technical scheme:
a method for reinforcing an existing masonry wall by adopting a concrete prefabricated splicing assembly mode comprises the following steps:
1) before reinforcing the masonry wall, chiseling a whitewash layer on the surface of the masonry wall, removing oil stains and floating slurry on the surface, polishing the surface to a solid base layer, and arranging drill split connecting pore passages on the masonry wall by adopting a quincunx arrangement method;
2) simultaneously smearing an adhesive on the surface of the treated base layer and the surface of a concrete prefabricated part, wherein the concrete prefabricated part is provided with horizontal distribution ribs and vertical distribution ribs; the thickness of the adhesive is 2-3 mm;
3) attaching the concrete prefabricated member to a preset position on the surface of the base layer and clamping the concrete prefabricated member by using a clamp; after the concrete prefabricated member is well adhered, pressurizing to ensure that the glue solution is just extruded out of the side seam of the prefabricated member;
4) curing the adhesive;
5) overlapping the horizontal distribution ribs and the vertical distribution ribs reserved in the concrete prefabricated member, and performing split connection by adopting split bolts or S-shaped wall-penetrating ribs; pouring concrete at the connecting part of the concrete prefabricated part;
6) removing impurities in a concrete prefabricated member pore channel, manually penetrating the prestressed steel strand, tensioning the steel strand, and performing pipeline grouting and anchor sealing after tensioning;
7) and after the adhesive is cured, the clamp is removed, and fine aggregate concrete or grouting material is poured at the position where the prefabricated part is connected with the anchor sealing position for sealing treatment.
Further, the concrete prefabricated part is provided with horizontal distribution muscle and vertical distribution muscle, 200mm is respectively reserved at horizontal distribution muscle and vertical distribution muscle both ends.
Further, the thickness of the concrete prefabricated part is 50 mm-110 mm.
Further, the vertical distribution rib is a C10@200 reinforcing steel bar.
Further, the horizontal distribution rib is a C10@200 steel bar.
Further, the adhesive is cured at room temperature in the step 4).
Further, said step 1) optionally also comprises, if necessary, the following operations: polishing or repairing the uneven part; removing dust on the surface, cleaning and brushing an interface agent; when the wall body has cracks, the cracks are firstly repaired.
The adhesive can be a commercially available product, and the construction by adopting a proper adhesive can be known by the technical personnel in the field.
Compared with the prior art, the invention has the following beneficial effects:
(1) the prefabricated member and the original brick wall are bonded into a whole by adopting an adhesive and a prestressing method, so that the static force and the anti-seismic performance of the wall are improved, the existing masonry structure has better bearing capacity and durability, and the reinforcing effect of the existing masonry is ensured; the construction is convenient, the bonding performance between the brick wall and the concrete prefabricated member is enhanced, the wall and the concrete prefabricated member are ensured to work together, and the reinforcing effect is ensured;
(2) the invention adopts the precast concrete component for reinforcement, ensures the structural durability and the corrosion resistance, and conforms to the concept of sustainable development, energy conservation and environmental protection in China; compared with the traditional reinforcing method, the method has the advantages that the steel consumption is reduced, the field large-scale welding is avoided, and the fire resistance of the member is improved;
(3) the construction process only adopts standardized assembly, only a small part adopts cast-in-place construction, and the use of templates and binding reinforcing steel bars is greatly reduced; the field wet operation of the traditional reinforcing method is reduced, the construction procedures of binding a reinforcing mesh, supporting a formwork, removing the formwork and the like are avoided, the construction speed is high, the cost is reduced, and the construction period is saved;
(4) the invention is not only suitable for reinforcing brick walls, but also suitable for reinforcing concrete walls, can meet the reinforcement of different conditions by adjusting the thickness of the prefabricated member, and has wider application range and better economic benefit.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of a brick wall reinforcing structure;
FIG. 2 is a cross-sectional view of a brick wall using a split bolt for bilateral reinforcement A-A;
FIG. 3 is a cross-sectional view of a brick wall with double-sided reinforcement using split bolts B-B;
FIG. 4 is a sectional view of a brick wall reinforced on both sides with S-shaped wall-penetrating ribs A-A;
FIG. 5 is a sectional view of a brick wall reinforced on both sides with S-shaped wall-penetrating ribs B-B.
Reference numerals: the method comprises the following steps of 1-concrete prefabricated part, 2-horizontal distribution ribs, 3-vertical distribution ribs, 4-brick wall, 5-upper floor, 6-lower floor, 7-split connecting hole, 8-split bolt, 9-prestressed steel strand, 10-pipeline, 11-anchorage device and 12-S-shaped wall penetrating ribs.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The utility model provides a method for adopt prefabricated concatenation assembly methods of concrete to consolidate existing brickwork wall, this embodiment is that brick wall uses two side reinforcement of split bolt, includes following steps:
the method comprises the following steps: as shown in fig. 1 to 3, before reinforcing the brick wall 4 between the upper floor 5 and the lower floor 6 on both sides, a plastering layer on the surface of the brick wall member is chiseled to a base layer, oil stains and floating slurry on the surface are removed, and the brick wall member is polished to a solid base layer; polishing or repairing the uneven part; removing dust on the surface, cleaning and brushing an interface agent; arranging drill split connecting pore channels on the masonry by adopting a quincunx arrangement method; when the wall body has cracks, the cracks are firstly repaired;
step two: after the adhesive is prepared according to the product specification, the adhesive is smeared on the surface of the treated base layer and the surface of the concrete prefabricated part 1 by a spatula at the same time, and the thickness is 3 mm; the concrete prefabricated part is provided with horizontal distribution ribs 2 and vertical distribution ribs 3;
step three: attaching the concrete prefabricated parts to preset positions on two sides of the original wall body to ensure that the concrete prefabricated parts are tightly adhered; the thickness of the concrete prefabricated part is 100mm, the vertical distribution ribs 3 are C10@200, the two ends of the concrete prefabricated part are reserved with 200mm, the horizontal distribution ribs 2 are C10@200, and the two ends of the concrete prefabricated part are reserved with 200 mm. Immediately clamping the concrete prefabricated member after the concrete prefabricated member is adhered, and properly pressurizing to ensure that glue liquid is just extruded out from the side seam of the prefabricated member;
step four: curing at room temperature according to the requirements of the selected adhesive;
step five: the prefabricated concrete member is preserved with vertical distribution rib lap joint processing, horizontal stirrups are bound, the split bolts 8 are used for split connection, and concrete is poured at the connecting position of the prefabricated concrete member.
Step six: as shown in fig. 3, impurities in the pipeline 10 are removed, the prestressed steel strand 9 is manually pulled in a bundle, and the steel strand is tensioned. The prestressed steel strand 9 is 7As5, the pipeline 10 is a plastic corrugated pipe, and the distance is 500 mm. Step five: and after tensioning is finished, grouting and sealing the anchor of the pipeline in time. Now the anchorage 11 and the surface of the bearing plate are coated with adhesive and then sealed with epoxy mortar. The anchor 11 uses a backing plate with the size of 75 multiplied by 75mm, the thickness of 14mm and the material of Q235B.
Step seven: and (4) curing at normal temperature according to the requirements of the selected adhesive. And after curing, dismantling the clamp of the concrete prefabricated part 1. And pouring concrete at the connecting part and the anchor sealing position of the prefabricated part.
Example 2
The utility model provides a method for adopt prefabricated concatenation assembly methods of concrete to consolidate existing brickwork wall, this embodiment is that brick wall uses two side reinforcement of S-shaped wall muscle, includes following step:
the method comprises the following steps: as shown in fig. 4 to 5, before reinforcing the brick wall 4 between the upper floor 5 and the lower floor 6 on one side, a plastering layer on the surface of the member is chiseled to a base layer, oil stains and floating slurry on the surface are removed, and the member is polished to a solid base layer; polishing or repairing the uneven part; removing dust on the surface, cleaning and brushing an interface agent; arranging drill split connecting pore channels on the masonry by adopting a quincunx arrangement method; when the wall body has cracks, the cracks are firstly repaired;
step two: after the adhesive is prepared according to the product specification, the adhesive is smeared on the surface of the treated base layer and the surface of the concrete prefabricated part by a spatula at the same time, and the thickness is 3 mm; the concrete prefabricated part is provided with horizontal distribution ribs and vertical distribution ribs;
step three: and (3) pasting the concrete prefabricated member on the preset position of the single side of the original wall body to ensure that the concrete prefabricated member is tightly pasted. The thickness of the concrete prefabricated part is 75mm, the vertical distribution ribs are C10@200, the two ends of the concrete prefabricated part are reserved with 200mm, the horizontal distribution ribs are C10@200, and the two ends of the concrete prefabricated part are reserved with 200 mm; after the concrete prefabricated member is stuck, it is properly pressurized so as to make the glue liquor be just extruded from side seam of prefabricated member.
Step four: curing at room temperature according to the requirements of the selected adhesive;
step five: the prefabricated concrete member is provided with vertically distributed ribs for lap joint treatment, horizontal stirrups are bound, and S-shaped wall-penetrating ribs 12 are used for split connection; and pouring concrete at the connecting part of the prefabricated part and the anchor sealing position.
Step six: as shown in fig. 5, impurities in the pipeline 10 are removed, the prestressed steel strand 9 is manually pulled in a bundle, and the steel strand is tensioned. The prestressed steel strand 9 is 7As5, the pipeline 10 is a plastic corrugated pipe, and the distance is 500 mm. Step five: and after tensioning is finished, grouting and sealing the anchor of the pipeline in time. Now the anchorage 11 and the surface of the bearing plate are coated with adhesive and then sealed with epoxy mortar. The anchor 11 uses a backing plate with the size of 75 multiplied by 75mm, the thickness of 14mm and the material of Q235B.
Step seven: and (4) curing at normal temperature according to the requirements of the selected adhesive. And after curing, removing the clamp of the concrete prefabricated part 3. And pouring concrete at the connecting part and the anchor sealing position of the prefabricated part.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (7)
1. A method for reinforcing an existing masonry wall by adopting a concrete prefabricated splicing assembly mode is characterized by comprising the following steps:
1) before reinforcing the masonry wall, chiseling a whitewash layer on the surface of the masonry wall, removing oil stains and floating slurry on the surface, polishing the surface to a solid base layer, and arranging drill split connecting pore passages on the masonry wall by adopting a quincunx arrangement method;
2) smearing an adhesive on the surface of the treated base layer and the surface of a concrete prefabricated part at the same time, wherein the concrete prefabricated part is provided with horizontal distribution ribs and vertical distribution ribs, and a pipeline is reserved in the horizontal direction; the thickness of the adhesive is 2-3 mm;
3) attaching the concrete prefabricated member to a preset position on the surface of the base layer and clamping the concrete prefabricated member by using a clamp; after the concrete prefabricated member is well adhered, pressurizing to ensure that the glue solution is just extruded out of the side seam of the prefabricated member;
4) after the used adhesive is cured, the clamp is removed;
5) overlapping the horizontal distribution ribs and the vertical distribution ribs reserved in the concrete prefabricated member, and performing split connection by adopting split bolts or S-shaped wall-penetrating ribs; pouring concrete at the connecting part of the concrete prefabricated part;
6) removing sundries in the reserved pipeline of the concrete prefabricated member, manually penetrating the prestressed steel strand, tensioning the steel strand, and performing pipeline grouting and anchor sealing after tensioning;
7) and pouring fine aggregate concrete or grouting material at the position where the prefabricated member is connected with the anchor sealing position for sealing treatment.
2. The method for reinforcing the existing masonry wall by adopting the concrete precast splicing assembly mode as claimed in claim 1, wherein 200mm is reserved at each of two ends of the horizontal distribution ribs and two ends of the vertical distribution ribs.
3. The method for reinforcing the existing masonry wall by adopting the concrete precast splicing assembly manner as claimed in claim 1, wherein the thickness of the concrete precast member is 50 mm-110 mm.
4. The method for reinforcing the existing masonry wall by adopting the concrete precast splicing assembly mode as claimed in claim 1, wherein the vertical distribution ribs are C10@200 steel bars.
5. The method for reinforcing an existing masonry wall by adopting a concrete precast splicing assembly mode according to claim 1, wherein the horizontal distribution ribs are C10@200 steel bars.
6. The method for reinforcing an existing masonry wall by means of concrete precast splicing assembly according to claim 1, wherein the adhesive is cured at room temperature in the step 4).
7. The method for reinforcing an existing masonry wall by means of concrete precast split joint assembly according to claim 1, wherein the step 1) further optionally comprises the following operations: polishing or repairing the uneven part; removing dust on the surface, cleaning and brushing an interface agent; when the wall body has cracks, the cracks are firstly repaired.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111247427.8A CN113982304A (en) | 2021-10-26 | 2021-10-26 | Method for reinforcing existing masonry wall by adopting concrete prefabricated splicing assembly mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111247427.8A CN113982304A (en) | 2021-10-26 | 2021-10-26 | Method for reinforcing existing masonry wall by adopting concrete prefabricated splicing assembly mode |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5596857A (en) * | 1994-12-01 | 1997-01-28 | Besche; Charles F. | Masonry reinforcement |
| US5845444A (en) * | 1994-12-01 | 1998-12-08 | Besche; Charles F. | Masonry reinforcement |
| WO2019056717A1 (en) * | 2017-09-21 | 2019-03-28 | 中国建筑股份有限公司 | Post-tensioned prestressed assembly-style system of concrete framework and shock-resistant and energy-dissipating components, and construction method |
| CN110067401A (en) * | 2019-03-25 | 2019-07-30 | 北京筑福国际抗震技术有限责任公司 | A kind of existing masonry structure is reinforced using prefabricated board wall and its construction method |
| CN113530294A (en) * | 2021-07-15 | 2021-10-22 | 陕西省建筑科学研究院有限公司 | Method for assembling prefabricated member reinforcing column by adopting concrete |
-
2021
- 2021-10-26 CN CN202111247427.8A patent/CN113982304A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5596857A (en) * | 1994-12-01 | 1997-01-28 | Besche; Charles F. | Masonry reinforcement |
| US5845444A (en) * | 1994-12-01 | 1998-12-08 | Besche; Charles F. | Masonry reinforcement |
| WO2019056717A1 (en) * | 2017-09-21 | 2019-03-28 | 中国建筑股份有限公司 | Post-tensioned prestressed assembly-style system of concrete framework and shock-resistant and energy-dissipating components, and construction method |
| CN110067401A (en) * | 2019-03-25 | 2019-07-30 | 北京筑福国际抗震技术有限责任公司 | A kind of existing masonry structure is reinforced using prefabricated board wall and its construction method |
| CN113530294A (en) * | 2021-07-15 | 2021-10-22 | 陕西省建筑科学研究院有限公司 | Method for assembling prefabricated member reinforcing column by adopting concrete |
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Application publication date: 20220128 |