CN115822307A - Construction method for repairing outer wall structure of old community - Google Patents
Construction method for repairing outer wall structure of old community Download PDFInfo
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- CN115822307A CN115822307A CN202211646397.2A CN202211646397A CN115822307A CN 115822307 A CN115822307 A CN 115822307A CN 202211646397 A CN202211646397 A CN 202211646397A CN 115822307 A CN115822307 A CN 115822307A
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- bars
- steel bar
- steel bars
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- 238000010276 construction Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 52
- 230000008439 repair process Effects 0.000 claims abstract description 27
- 239000004593 Epoxy Substances 0.000 claims abstract description 17
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 13
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002932 luster Substances 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 230000002265 prevention Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000002787 reinforcement Effects 0.000 description 4
- 238000002407 reforming Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The invention relates to a construction method for repairing an outer wall structure for old community reconstruction, which comprises the following steps: a. removing loose concrete on the surface of the outer wall until the loose concrete exposes out of the internal hard concrete structural surface; b. derusting the steel bars with the rusty expansion until the metal luster is exposed; c. for the area with serious corrosion of the steel bars, planting bars are implanted into the wall body, and additional steel bars are welded and fixed at the exposed ends of the planting bars; d. placing a reinforcing steel bar beside the steel bar seriously corroded, wherein the reinforcing steel bar is parallel to the original steel bar and is attached to the original steel bar; e. welding the reinforcing steel bar with the original steel bar; f. welding and fixing the reinforcing steel bars and the additional steel bars together; g. carrying out rust prevention treatment on the steel bars; h. and repairing the wall surface by using epoxy repair mortar. The invention can repair the appearance of the wall body, repair the internal reinforcing steel bar structure, greatly enhance the structural strength of the old building wall body and reduce the potential safety hazard.
Description
Technical Field
The invention relates to a wall body repairing method, in particular to a repairing construction method for an outer wall structure transformed in an old community.
Background
At present, the repair of the outer wall structure of an old residential area is a difficult problem, particularly, the bottom of the outer wall, a balcony, a cornice and an air conditioner plate are overhauled for a long time, concrete is seriously fallen off, internal reinforcing steel bars are corroded, the supporting strength of the wall structure is seriously influenced, great potential safety hazards exist, and dangers can occur when the wall structure is not maintained for a long time in the case of extremely heavy rainstorm. The existing wall body maintenance method mainly repairs the concrete part, mainly repairs the appearance of the wall body, slows down the corrosion of the reinforcing steel bars, has little improvement on the structural strength of the wall body, and has the hidden trouble that the wall body collapses because the reinforcing steel bars in the wall body are corroded.
Disclosure of Invention
The invention aims to provide a construction method for repairing an outer wall structure for old community reconstruction, and aims to solve the problems that the existing wall body repairing method cannot improve the structural strength of a wall body and has potential safety hazards.
The invention is realized in the following way: a construction method for repairing an outer wall structure of an old community comprises the following steps.
a. And removing the loose concrete on the surface of the outer wall until the loose concrete is exposed out of the internal hard concrete structural surface.
b. And carrying out rust removal treatment on the steel bars with rust expansion until the metal luster is exposed.
c. For the area with serious corrosion of the steel bars, planting bars are implanted into the wall body, additional steel bars are welded and fixed at the exposed ends of the planting bars, and the additional steel bars are arranged in parallel to the surface of the wall body.
d. And placing a reinforcing steel bar beside the steel bar seriously corroded, wherein the reinforcing steel bar is parallel to the original steel bar and is attached to the original steel bar.
e. And welding the reinforcing steel bar with the original steel bar, wherein the welding spot selects the part of the original steel bar which is not corroded or is slightly corroded.
f. And welding and fixing the reinforcing steel bars and the additional steel bars together.
g. And carrying out rust prevention treatment on the original reinforcing steel bars, the additional reinforcing steel bars and the reinforcing steel bars.
h. And repairing the wall surface by using the epoxy repair mortar, and troweling the epoxy repair mortar.
In the repair construction method for the outer wall structure modified by the old community, the additional steel bars comprise horizontal bars and vertical bars, the horizontal bars and the vertical bars are welded to form a grid structure, and the additional steel bars completely cover the severely-corroded areas of the steel bars.
In the construction method for repairing the outer wall structure modified by the old community, the embedded steel bar depth is 100mm, and the exposed end of the embedded steel bar is in a bent hook shape.
In the construction method for repairing the outer wall structure modified by the old community, the epoxy repair mortar is directly used for repairing the wall surface under the condition that the depth of the loose concrete is shallow or the reinforcing steel bars are not exposed, and the epoxy repair mortar is trowelled.
In the method for repairing and constructing the outer wall structure for reforming the old residential quarter, the end parts of the column body or the wall body are simultaneously treated, and the additional steel bars on the plurality of wall surfaces are mutually connected.
In the construction method for repairing the outer wall structure modified by the old community, the reinforcing steel bars are three-level steel bars with the same diameter as the original steel bars.
The method is used for repairing the outer wall structure of the old residential area, rusted steel bars are exposed after loose concrete is removed, the original rusted steel bars are reinforced through the reinforcing steel bars, and the reinforcing steel bars are fixed into an integral structure through the additional steel bars, so that the steel bar structure of the wall body is reinforced, the structural strength of the wall body is improved, then the missing parts on the wall body are completely filled with epoxy repair mortar, and the repair of the outer wall structure of the old residential area is completed.
The method for repairing the outer wall of the old community can repair the appearance of the wall body, repair the internal reinforcing steel bar structure, greatly strengthen the structural strength of the old building wall body and reduce potential safety hazards.
Drawings
FIG. 1 is a block diagram of the present invention.
Fig. 2 isbase:Sub>A view frombase:Sub>A-base:Sub>A of fig. 1.
In the figure: 1. a wall body; 2. original reinforcing steel bars; 3. planting bars; 4. adding a steel bar; 5. reinforcing the steel bars.
Detailed Description
As shown in fig. 1 and fig. 2, the invention relates to a construction method for repairing an outer wall structure of an old community by reforming, which comprises the following steps.
a. And removing the loose concrete on the surface of the outer wall until the loose concrete is exposed out of the internal hard concrete structural surface. The damaged area of outer wall surface is cleared up to use the instrument, gets rid of the concrete of pine, and the concrete and the reinforcing bar surface that exposes are cleared up to use the brush until the concrete becomes hard can't get rid of easily.
b. And carrying out rust removal treatment on the steel bars with rust expansion until the metal luster is exposed. And (4) carrying out rust removal treatment on the steel bars with rust by using a rust remover and a steel wire brush to expose the metal luster of the steel bars.
c. For the area of the serious corrosion of the steel bar, the embedded steel bar 3 is implanted into the wall body 1, the steel bar is vertically implanted into the wall body 1 to a certain depth, the exposed end of the embedded steel bar 3 is welded and fixed with the additional steel bar 4, the additional steel bar 4 is arranged in parallel to the surface of the wall body 1, and the additional steel bar is firmly fixed on the wall body 1 through the embedded steel bar 3.
The additional steel bars 4 comprise horizontal bars and vertical bars, the horizontal bars and the vertical bars are welded to form a grid structure, and the range of the additional steel bars 4 can completely cover the severe corrosion area of the steel bars.
For hard concrete that may obstruct the position of the additional rebars 4, a tool is used to remove it, placing it in interference with the additional rebars 4.
In order to guarantee the firmness of the embedded steel bars 3, the depth of the embedded steel bars 3 is about 100mm, and the specific depth is determined according to the thickness of the wall body 1 and the depth of the wall surface damage. The exposed end of the embedded bar 3 is in a bent hook shape, and the additional steel bar 4 is temporarily fixed by the bent hook at the front end of the welded and fixed embedded bar 3.
d. Place reinforcement reinforcing bar 5 by the serious reinforcing bar of corrosion, reinforcement reinforcing bar 5 is parallel and paste on original reinforcing bar 2 with original reinforcing bar 2.
The reinforcement reinforcing steel bar 5 is a three-level reinforcing steel bar with the same diameter as the original reinforcing steel bar, and the length of the reinforcement reinforcing steel bar 5 is based on the exposed length of the original reinforcing steel bar.
e. And welding the reinforcing steel bar 5 and the original steel bar 2, wherein the welding spot selects the part of the original steel bar 2 which is not rusted or is slightly rusted.
The root of the exposed part of the original steel bar is generally not rusted or is light in rusty, so the root of the exposed part of the original steel bar is generally used as a welding point, the reinforcing steel bar 5 and the original steel bar are welded together, and at least two welding points are arranged, so that the fixation between the reinforcing steel bar and the original steel bar is ensured to be firm.
f. The reinforcing steel bar 5 and the additional steel bar 4 are welded and fixed together.
The respective reinforcing bars 5 are connected as an integrated structure by the additional bars 4, thereby enhancing the overall structural strength.
g. And carrying out rust prevention treatment on the original reinforcing steel bar 2, the additional reinforcing steel bar 4 and the reinforcing steel bar 5. And spraying antirust paint on the surfaces of the exposed original reinforcing steel bar 2, the newly added additional reinforcing steel bar 4 and the reinforcing steel bar 5 to improve the antirust performance of the reinforcing steel bar.
h. And filling and repairing the wall surface by using the epoxy repair mortar, and leveling the epoxy repair mortar.
And if the loose concrete on the surface of the wall body 1 is shallow in depth and does not expose complete reinforcing steel bars or completely expose reinforcing steel bars, directly repairing the wall surface by using epoxy repair mortar, and troweling the epoxy repair mortar.
If the condition of two regional reinforcing bar corrosion that the distance is close is all more serious, or at the tip of cylinder or wall body 1, a plurality of walls all have the serious condition of reinforcing bar corrosion, then handle a plurality of walls simultaneously, except removing crisp concrete, also get rid of unnecessary hard concrete between the adjacent region, make intercommunication each other under a plurality of regions, make additional reinforcing bar 4 to a plurality of walls are unified, and it is fixed with additional reinforcing bar 4 to implant 3 in a plurality of regions.
When the epoxy repair mortar is used for filling the surface of the wall body 1, the surface of the epoxy repair mortar slightly exceeds the surface of the original wall body 1, so that the newly added additional reinforcing steel bars 4 and the reinforcing steel bars 5 are completely covered in the epoxy repair mortar.
The method is used for repairing the outer wall structure of the old residential area, rusted steel bars are exposed after loose concrete is removed, the original rusted steel bars are reinforced through the reinforcing steel bars 5, and the reinforcing steel bars 5 are fixed into an integral structure through the additional steel bars 4, so that the steel bar structure of the wall body 1 is reinforced, the structural strength of the wall body 1 is improved, then the missing parts on the wall body 1 are completely filled with epoxy repair mortar, and the repair of the outer wall structure of the old residential area is completed.
By using the method for repairing the outer wall of the old community, the appearance of the wall body 1 can be repaired, meanwhile, the internal reinforcing steel bar structure can be repaired, the structural strength of the old building wall body 1 can be greatly enhanced, and potential safety hazards are reduced.
Claims (6)
1. A construction method for repairing an outer wall structure of an old community is characterized by comprising the following steps:
a. removing loose concrete on the surface of the outer wall until the loose concrete exposes out of the internal hard concrete structural surface;
b. derusting the steel bars with the rusty expansion until the metal luster is exposed;
c. implanting embedded bars into the wall body in areas where the steel bars are seriously corroded, and fixedly welding additional steel bars at the exposed ends of the embedded bars, wherein the additional steel bars are arranged in parallel to the surface of the wall body;
d. placing a reinforcing steel bar beside the steel bar seriously corroded, wherein the reinforcing steel bar is parallel to the original steel bar and is attached to the original steel bar;
e. welding the reinforcing steel bar with the original steel bar, and selecting the part of the original steel bar which is not corroded or is slightly corroded by the welding spot;
f. welding and fixing the reinforcing steel bars and the additional steel bars together;
g. carrying out rust prevention treatment on the original reinforcing steel bars, the additional reinforcing steel bars and the reinforcing steel bars;
h. and repairing the wall surface by using the epoxy repair mortar, and troweling the epoxy repair mortar.
2. The method for repairing and constructing the outer wall structure of the old community reconstruction as claimed in claim 1, wherein the additional steel bars comprise horizontal bars and vertical bars, the horizontal bars and the vertical bars are welded to form a grid structure, and the additional steel bars completely cover the severely corroded areas of the steel bars.
3. The method for repairing and constructing an outer wall structure modified by an old community as claimed in claim 1, wherein the embedded steel bar depth is 100mm, and the exposed end of the embedded steel bar is bent.
4. The method for repairing and constructing the structure of the outer wall reconstructed from the old residential area as claimed in claim 1, wherein for the case that the depth of the loose concrete is shallow or the steel bars are not exposed, the epoxy repair mortar is directly used for repairing the wall surface, and is trowelled.
5. The method as claimed in claim 1, wherein a plurality of wall surfaces are treated at the same time at the end of the column or wall, and the additional reinforcing bars are connected to each other.
6. The method for repairing and constructing an outer wall structure modified by an old community as claimed in claim 1, wherein the reinforcing steel bars are three-level steel bars with the same diameter as the original steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211646397.2A CN115822307A (en) | 2022-12-21 | 2022-12-21 | Construction method for repairing outer wall structure of old community |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211646397.2A CN115822307A (en) | 2022-12-21 | 2022-12-21 | Construction method for repairing outer wall structure of old community |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115822307A true CN115822307A (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211646397.2A Pending CN115822307A (en) | 2022-12-21 | 2022-12-21 | Construction method for repairing outer wall structure of old community |
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| Country | Link |
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| CN (1) | CN115822307A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080552A (en) * | 2019-04-30 | 2019-08-02 | 中国二十冶集团有限公司 | The restorative procedure of Reconstruction Project holding member |
| CN111018463A (en) * | 2018-10-09 | 2020-04-17 | 俊和建筑工程有限公司 | Mortar reinforced concrete structure |
| CN215760654U (en) * | 2021-09-29 | 2022-02-08 | 广东赛力克建筑技术工程有限公司 | Exposed reinforcement repairing structure for building |
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2022
- 2022-12-21 CN CN202211646397.2A patent/CN115822307A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018463A (en) * | 2018-10-09 | 2020-04-17 | 俊和建筑工程有限公司 | Mortar reinforced concrete structure |
| CN110080552A (en) * | 2019-04-30 | 2019-08-02 | 中国二十冶集团有限公司 | The restorative procedure of Reconstruction Project holding member |
| CN215760654U (en) * | 2021-09-29 | 2022-02-08 | 广东赛力克建筑技术工程有限公司 | Exposed reinforcement repairing structure for building |
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