CN116876887A - Frame reinforcing structure based on precast concrete wallboard and reinforcing transformation method - Google Patents
Frame reinforcing structure based on precast concrete wallboard and reinforcing transformation method Download PDFInfo
- Publication number
- CN116876887A CN116876887A CN202311149291.6A CN202311149291A CN116876887A CN 116876887 A CN116876887 A CN 116876887A CN 202311149291 A CN202311149291 A CN 202311149291A CN 116876887 A CN116876887 A CN 116876887A
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- frame
- connecting steel
- prefabricated
- reinforcing
- wallboard
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 43
- 239000011178 precast concrete Substances 0.000 title claims abstract description 10
- 238000011426 transformation method Methods 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 92
- 239000010959 steel Substances 0.000 claims abstract description 92
- 239000004567 concrete Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- 238000002407 reforming Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 17
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims 1
- 238000009420 retrofitting Methods 0.000 claims 1
- 239000011800 void material Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 239000000428 dust Substances 0.000 abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
The invention discloses a frame reinforcing structure based on a precast concrete wallboard and a reinforcing and reforming method, and relates to the technical field of concrete wallboards. The concave part and the outer convex part structure of the prefabricated wallboard not only provide space for on-site connection and fixation, but also further enhance the connection reliability among the prefabricated wallboard, the frame beam and the frame column, the designed connection steel pipe can effectively reduce the adhesive length of the connection steel pipe in the frame beam and the frame column, realize the smooth welding of the connection steel bar with the prefabricated wallboard, reduce the on-site construction amount, reduce dust and noise and realize high-efficiency construction while ensuring the performance.
Description
Technical Field
The invention relates to the technical field of concrete wallboards, in particular to a frame reinforcing structure based on a precast concrete wallboard and a reinforcing and reforming method.
Background
With the rapid development of the economic society of China, the building design standard is gradually improved, the existing building functions or the existing design requirements cannot be met due to the fact that the existing design standard is behind, or the performance degradation degree is serious due to the fact that the service time is long, the service condition is complex, the performance is required to be improved, the investment of new building is large, the period is long, and therefore the reinforcement and transformation of the existing building are used for achieving the performance improvement, and the building is one of important contents of the development of the existing building industry of China.
The frame structure has larger application proportion in the existing civil and industrial buildings in China, and the reinforcement of the frame structure generally adopts the member reinforcement methods such as an enlarged section method, an outsourced steel reinforcement method, a pasting steel plate reinforcement method and the like at present, but the methods have the defects of larger site construction amount, more dust, large vibration and obvious disturbance to the original structure, and are not beneficial to environmental protection.
Therefore, aiming at the reinforcement and transformation of the frame structure, the innovative, efficient and reliable reinforcement method is explored by combining the current industrial development trend of the building industry in China, and the quality improvement and the efficiency improvement in the technical field are realized.
Disclosure of Invention
The invention provides a frame reinforcing structure based on a precast concrete wallboard and a reinforcing transformation method, which reduce the field reinforcing workload and reduce the damage and disturbance to the original structure by arranging the precast wallboard with an inner concave part and an outer convex part so as to solve the problems in the prior art.
In order to achieve the above object, the present invention adopts the following technical scheme.
Frame reinforcing structure based on precast concrete wallboard, precast wallboard and frame construction complex edge are provided with the indent and the portion of outspreading that distribute in turn, are provided with the connection steel pipe on frame beam and the frame post of frame construction, are provided with the connecting reinforcement in the indent, and connecting reinforcement and connection steel pipe fixed connection, and the grouting material is filled in the clearance between precast wallboard and frame beam, the frame post.
Preferably, at least one layer of reinforcing mesh is embedded in the prefabricated wallboard, the reinforcing mesh comprises a plurality of horizontal reinforcing bars and a plurality of vertical reinforcing bars, and the horizontal reinforcing bars or the vertical reinforcing bars extend from the inner concave part to form connecting reinforcing bars.
Preferably, the connecting steel pipes are in one-to-one correspondence with the concave parts and welded with corresponding connecting steel bars, the frame beams and the frame columns are provided with notches, and the connecting steel pipes are embedded into the notches.
Preferably, the gap between the connecting steel pipe and the notch is filled with structural glue.
Preferably, the grouting material fills the gaps between the prefabricated wall panels and the frame beams and frame columns and wraps the connecting steel pipes and the connecting steel bars.
Preferably, the prefabricated wall panel is made of recycled lightweight concrete.
A frame structure reinforcing and reforming method based on precast concrete wallboards comprises the following steps.
Step one, manufacturing a prefabricated wallboard with inner concave parts and outer convex parts which are alternately distributed at the edges, and arranging connecting steel bars in the inner concave parts.
Drilling holes on the frame beams and the frame columns of the frame structure, and forming notches.
And thirdly, inserting a connecting steel pipe into the notch, and injecting structural adhesive into a gap between the connecting steel pipe and the notch.
And step four, installing the prefabricated wallboard, aligning the concave part of the prefabricated wallboard with the connecting steel pipe, and welding the connecting steel pipe and the connecting steel bar.
And fifthly, installing templates at the gap parts among the prefabricated wall boards, the frame beams and the frame columns, and injecting grouting materials into the gaps.
The prefabricated wallboard is made of recycled light concrete, and a plurality of horizontal steel bars and vertical steel bars are buried in the prefabricated wallboard, and extend from the concave part to form connecting steel bars.
Compared with the prior art, the invention has the following beneficial effects.
1. The prefabricated wallboard is provided with the inner concave part and the outer convex part, the connecting steel pipes are matched and installed on the frame beams and the frame columns, the connecting steel bars in the inner concave part are fixedly connected with the connecting steel pipes, the connecting steel pipes are positioned in the inner concave part in the horizontal direction and the vertical direction, and after gaps among the prefabricated wallboard, the frame beams and the frame columns are filled with grouting materials, the connecting steel pipes, the connecting steel bars, the inner concave part and the outer convex part have good shearing resistance, so that the connection reliability among the prefabricated wallboard, the frame beams and the frame columns is enhanced.
2. The connecting steel pipe replaces the traditional steel bar connection, can effectively reduce the adhesive length of the connecting steel pipe in the frame beam and the frame column, realizes the smooth welding of the connecting steel pipe and the connecting steel bar of the prefabricated wallboard, reduces the site construction quantity while guaranteeing the performance, reduces dust and noise, and realizes high-efficiency construction.
3. The high-performance grouting material fully fills the concave part and the outer convex part to form full bond wrapping on the connecting steel pipe and the connecting steel bar, and can ensure the integral working performance of the prefabricated wallboard, the frame beam and the frame column by utilizing the high-strength performance of the material.
4. The prefabricated wallboard is molded in a factory, can be made of recycled light concrete, can fully utilize the advantages of industrial manufacturing and green low-carbon materials, and realizes efficient construction, energy conservation and carbon reduction.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of a connection structure for connecting a steel pipe with a frame beam and a prefabricated wallboard.
Fig. 3 is a schematic diagram of a connection structure for connecting a steel pipe with a frame column and a prefabricated wallboard.
In the figure: 1. prefabricating wallboard; 2. a frame beam; 3. a frame column; 4. an inner concave portion; 5. an outer protruding portion; 6. connecting steel pipes; 7. connecting steel bars; 8. grouting; 9. horizontal steel bars; 10. vertical steel bars; 11. a notch; 12. structural adhesive.
Detailed Description
The following description of the embodiments of the present invention will be made more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, the frame reinforcing structure based on the prefabricated concrete wallboard provided by the embodiment of the invention uses the prefabricated wallboard 1 to reinforce the original frame structure, and can be used for reinforcing the old frame structure building.
With reference to fig. 1, the upper edge, the left edge and the right edge of the prefabricated wall panel 1 of the present invention are reserved with inner concave portions 4 and outer convex portions 5, and the inner concave portions 4 and the outer convex portions 5 are alternately distributed. The inner concave part 4 and the outer convex part 5 of the upper edge of the prefabricated wall panel 1 are matched with the frame beam 2, and the inner concave part 4 and the outer convex part 5 of the left edge and the right edge of the prefabricated wall panel 1 are matched with the frame column 3. The frame structure comprises a frame beam 2 and a frame column 3, a notch 11 is formed in the edge of the frame beam 2 and the frame column 3 matched with the prefabricated wallboard 1, a connecting steel pipe 6 is embedded into the notch 11, and the notch 11 extends out of the connecting steel pipe 6. In order to improve the fixing strength of the connecting steel pipe 6 in the notch 11, a structural adhesive 12 is filled in the gap between the outer surface of the connecting steel pipe 6 and the notch 11. Each connecting steel pipe 6 corresponds to one of the concave portions 4. Connecting steel bars 7 welded with the connecting steel pipes 6 are arranged in the concave parts 4 of the prefabricated wall boards 1. High-performance grouting materials 8 are fully poured into the connecting gaps among the concave parts 4 and the outer convex parts 5, the frame beams 2 and the frame columns 3, so that the grouting materials 8 fully bond the connecting steel pipes 6 and the connecting steel bars 7, and the integral working performance of the prefabricated wallboard 1, the frame beams 2 and the frame columns 3 is ensured.
The high performance grouting material 8 refers to a grouting material 8 with a higher strength grade. The strength grade of the grouting material 8 is classified into C20, C25, C30, etc., and the higher the grade is, the higher the strength is. The grouting material 8 may be called a high-strength grouting material 8 when the strength grade reaches C60.
Prefabricated wall panel 1 is typically fabricated using a form in which concrete is poured. In order to improve the strength of the prefabricated wallboard 1, at least one layer of reinforcing steel mesh is buried in the prefabricated wallboard 1, and the prefabricated wallboard can be a single-layer reinforcing steel mesh or a double-layer reinforcing steel mesh, and the reinforcing steel mesh is fully wrapped by concrete. The reinforcing mesh comprises a plurality of horizontal reinforcing bars 9 and a plurality of vertical reinforcing bars 10, and the horizontal reinforcing bars 9 and the vertical reinforcing bars 10 are in a cross shape. As can be seen in fig. 1, each of the outer flange 5 and the inner recess 4 has a vertical bar 10 or a horizontal bar 9 therein, the vertical bar 10 or the horizontal bar 9 in the outer flange 5 is wrapped with concrete, and the horizontal bar 9 or the portion of the vertical bar 10 in the inner recess 4 extending from the inner recess 4 forms a bare connecting bar 7.
Two connecting steel bars 7 are arranged in each concave part 4, the two connecting steel bars 7 correspond to one connecting steel pipe 6, and the two connecting steel bars 7 are welded on two sides of the connecting steel pipe 6 respectively.
The recycled light concrete is used for the concrete used for manufacturing the prefabricated wall panel 1, and the recycled light concrete is a building material formed by crushing, screening and washing waste concrete. The prefabricated wallboard 1 manufactured by using the recycled lightweight concrete can fully utilize the advantages of industrial manufacturing and green low-carbon materials, and realize efficient construction, energy conservation and carbon reduction.
As shown in fig. 1, the connecting steel pipes 6 on the two frame posts 3 are respectively embedded into the concave parts 4 on the left and right sides of the prefabricated wall panel 1, and the outer convex parts 5 on the left and right sides of the prefabricated wall panel 1 are positioned between the adjacent two connecting steel pipes 6. The connecting steel pipe 6, the inner concave part 4 and the outer convex part 5 form tooth-shaped engagement, so that the shearing resistance in the vertical direction is improved. The connecting steel pipes 6 on the frame beam 2 are embedded into the concave parts 4 at the top of the prefabricated wall plate 1, the outer convex parts 5 at the top of the prefabricated wall plate 1 are positioned between the two adjacent connecting steel pipes 6, and the concave parts 4 and the outer convex parts 5 at the top of the prefabricated wall plate 1 and the connecting steel pipes 6 on the frame beam 2 are also meshed in a tooth shape, so that the tensile capacity in the horizontal direction is improved.
The specifications, the number, the length and the like of the connecting steel pipes 6 can be flexibly designed according to engineering conditions.
The invention also provides a frame structure reinforcing and reforming method based on the precast concrete wallboard, which comprises the following steps of.
Firstly, manufacturing a prefabricated wallboard 1 in a factory or on site, wherein the prefabricated wallboard 1 is provided with an inner concave part 4, an outer convex part 5, horizontal steel bars 9 and vertical steel bars 10, the inner concave part 4 and the outer convex part 5 are alternately distributed on the top and the left and the right sides of the prefabricated wallboard 1, and connecting steel bars 7 are arranged in the inner concave part 4; the prefabricated wall panel 1 is made of recycled lightweight concrete, and the horizontal steel bars 9 and the vertical steel bars 10 are buried in the recycled lightweight concrete, and the horizontal steel bars 9 and the vertical steel bars 10 extend from the concave portions 4 to form connecting steel bars 7.
And secondly, drilling holes on the frame beams 2 and the frame columns 3 of the frame structure to be reinforced, and forming notches 11 corresponding to the concave parts 4 in positions on the frame beams 2 and the frame columns 3.
Step three, cleaning the notch 11, inserting the connecting steel pipe 6 into the notch 11, partially extending the connecting steel pipe 6 out of the notch 11, injecting structural adhesive 12 into a gap between the connecting steel pipe 6 and the notch 11, and firmly fixing the connecting steel pipe 6 in the notch 11.
And step four, installing the prefabricated wallboard 1, aligning the concave part 4 of the prefabricated wallboard 1 with the connecting steel pipe 6, clamping the connecting steel pipe 6 into the concave part 4, and welding the connecting steel pipe 6 and the connecting steel bar 7.
Installing templates at the gap parts between the prefabricated wall boards 1 and the frame beams 2 and the frame columns 3, injecting high-strength grouting materials 8 into the gaps, curing in place, and finishing reinforcing and reforming.
According to the technical scheme, the prefabricated wallboard is efficient to manufacture, simple in site construction and high in connection efficiency and reliability, the technical performance and efficiency of reinforcing and reforming the frame structure can be improved, and the prefabricated wallboard has obvious application value and social benefit.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The utility model provides a frame reinforced structure based on precast concrete wallboard, its characterized in that, precast wallboard (1) are provided with concave part (4) and outer portion (5) of alternate distribution with frame structure complex edge, are provided with on frame beam (2) and the frame post (3) of frame structure and connect steel pipe (6), be provided with connecting reinforcement (7) in concave part (4), connecting reinforcement (7) and connecting steel pipe (6) fixed connection, grouting material (8) are filled in the clearance between precast wallboard (1) and frame beam (2), frame post (3).
2. A prefabricated concrete wall panel based frame reinforcing structure according to claim 1, wherein at least one layer of reinforcing mesh is embedded in the prefabricated wall panel (1), the reinforcing mesh comprises a plurality of horizontal reinforcing bars (9) and a plurality of vertical reinforcing bars (10), and the horizontal reinforcing bars (9) or the vertical reinforcing bars (10) extend from the concave part (4) to form connecting reinforcing bars (7).
3. A prefabricated concrete wallboard-based frame reinforcing structure according to claim 1, wherein the connecting steel pipes (6) are in one-to-one correspondence with the concave parts (4) and welded with corresponding connecting steel bars (7), the frame beams (2) and the frame columns (3) are provided with notches (11), and the connecting steel pipes (6) are embedded into the notches (11).
4. A prefabricated concrete panel based frame reinforcing structure according to claim 3, characterized in that the gap between the connecting steel tube (6) and the notch (11) is filled with structural glue (12).
5. A prefabricated concrete panel based frame reinforcing structure according to claim 1, characterized in that the grouting material (8) fills the void between the prefabricated panel (1) and the frame beams (2) and frame columns (3) and encloses the connecting steel pipes (6) and the connecting steel bars (7).
6. A prefabricated concrete panel based frame reinforcement structure according to claim 1, characterized in that the prefabricated panel (1) is made of recycled lightweight concrete.
7. The frame structure reinforcing and reforming method based on the precast concrete wallboard is characterized by comprising the following steps of:
firstly, manufacturing a prefabricated wallboard (1) with inner concave parts (4) and outer convex parts (5) which are alternately distributed at the edge, and arranging connecting steel bars (7) in the inner concave parts (4);
drilling holes on frame beams (2) and frame columns (3) of the frame structure, and forming notches (11);
step three, inserting a connecting steel pipe (6) into the notch (11), and injecting structural adhesive (12) into a gap between the connecting steel pipe (6) and the notch (11);
installing the prefabricated wallboard (1), aligning the concave part (4) of the prefabricated wallboard (1) with the connecting steel pipe (6), and welding the connecting steel pipe (6) and the connecting steel bar (7);
installing templates at the gap parts between the prefabricated wall plates (1) and the frame beams (2) and between the prefabricated wall plates and the frame columns (3), and injecting grouting materials (8) into the gaps.
8. A method of reinforcing and retrofitting a prefabricated concrete wall panel based frame structure according to claim 7 wherein the prefabricated wall panel (1) is made of recycled lightweight concrete and has a plurality of horizontal (9) and vertical (10) rebars embedded therein, the horizontal (9) and vertical (10) rebars extending from the recess (4) to form the connecting rebars (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311149291.6A CN116876887A (en) | 2023-09-07 | 2023-09-07 | Frame reinforcing structure based on precast concrete wallboard and reinforcing transformation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311149291.6A CN116876887A (en) | 2023-09-07 | 2023-09-07 | Frame reinforcing structure based on precast concrete wallboard and reinforcing transformation method |
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| Publication Number | Publication Date |
|---|---|
| CN116876887A true CN116876887A (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311149291.6A Pending CN116876887A (en) | 2023-09-07 | 2023-09-07 | Frame reinforcing structure based on precast concrete wallboard and reinforcing transformation method |
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| CN (1) | CN116876887A (en) |
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Application publication date: 20231013 |