CN114086792B - A point-connected, cross-section-enlarged reinforcement structure and method thereof - Google Patents
A point-connected, cross-section-enlarged reinforcement structure and method thereof Download PDFInfo
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- CN114086792B CN114086792B CN202111462167.6A CN202111462167A CN114086792B CN 114086792 B CN114086792 B CN 114086792B CN 202111462167 A CN202111462167 A CN 202111462167A CN 114086792 B CN114086792 B CN 114086792B
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 17
- 238000007788 roughening Methods 0.000 claims description 22
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 20
- 230000001965 increasing effect Effects 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 12
- 238000005553 drilling Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 11
- 239000010426 asphalt Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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- 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
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- 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)
- Working Measures On Existing Buildindgs (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
本发明属于建筑结构技术领域，具体公开了一种点位连接的增大截面加固结构及方法。该点位连接的增大截面加固结构包括：第一梁、第二梁，以及第一连接件；第一梁的上侧面通过第一连接件与第二梁连接；第一连接件设置有连接第一梁和第二梁的第一钢筋。第一梁通过第一连接件和第一钢筋与第二梁连接，第二梁与第一梁之间可实现竖向力及水平力的传递，协同变形，达到对第一梁提高承载力，加固第一梁的目的；相比于传统的增大截面加固方式，大幅减少新旧砼连接面的打凿面积，减少的打凿面积比例约90％；其次，大幅度减少钻孔植筋量，减少比例约70％，而且加固方式对原结构的损伤小，施工方便，施工噪音更小，更环保。
The present invention belongs to the technical field of building structures, and specifically discloses a point-connected enlarged cross-section reinforcement structure and method. The point-connected enlarged cross-section reinforcement structure includes: a first beam, a second beam, and a first connecting member; the upper side of the first beam is connected to the second beam through the first connecting member; the first connecting member is provided with a first steel bar connecting the first beam and the second beam. The first beam is connected to the second beam through the first connecting member and the first steel bar, and the second beam and the first beam can realize the transmission of vertical force and horizontal force, and cooperate with deformation to achieve the purpose of improving the bearing capacity of the first beam and reinforcing the first beam; compared with the traditional enlarged cross-section reinforcement method, the chiseling area of the new and old concrete connection surfaces is greatly reduced, and the proportion of the reduced chiseling area is about 90%; secondly, the amount of drilling and reinforcing bar planting is greatly reduced, and the reduction ratio is about 70%, and the reinforcement method has little damage to the original structure, is convenient for construction, has less construction noise, and is more environmentally friendly.
Description
Technical Field
The invention relates to the technical field of building structures, in particular to a point-to-point connection reinforced structure with an increased cross section and a method thereof.
Background
The vehicle section upper cover development project belongs to one of the TOD project types, and the vehicle section upper cover development projects are increasing all over the country. Compared with the traditional project, the vehicle section upper cover project has the following structural characteristics that the upper cover is built on the built vehicle section structure, the problems of complex structure conversion, connection of new and old structures and the like exist, the safety level of the built vehicle section structure is high, the use function is not allowed to be interrupted, and the structure safety and the use of the vehicle section cannot be influenced by the covering construction. The cover structure conversion beam generally adopts a traditional reinforcing mode with increased section, namely, a concrete surface layer is chiseled on the whole upper side surface of the whole original beam, then a plurality of reinforcing steel bars are drilled on the original beam, finally, a new beam for wrapping the reinforcing steel bars is poured above the original beam, and the new beam is attached to the whole original beam, so that the section is increased, and the reinforcing purpose is achieved. The drilling and bar planting quantity is large, the damage of the drilling and bar planting to the original structural member is large, the structural quality is affected, and the risk of the bar planting penetrating through a floor slab is increased.
Disclosure of Invention
The invention aims to provide a reinforcing structure for increasing the cross section of point location connection, which aims to solve the technical problems of large chiseling amount and large bar planting amount of an original beam in the prior art.
In order to achieve the above object, a first aspect of the present invention provides an enlarged cross-section reinforcing structure for point connection, including:
a first beam, a second beam, and a first connection;
The first connecting piece is provided with a first reinforcing steel bar arranged along the vertical direction, the upper end of the first reinforcing steel bar is inserted into the second beam and fixedly connected with the second beam, and the lower end of the first reinforcing steel bar extends into the first beam and is fixedly connected with the first beam.
The reinforcing structure with the increased cross section for the point location connection preferably further comprises a second connecting piece connected with the upper side face of the first beam, wherein the second connecting piece is provided with a second reinforcing steel bar arranged in the vertical direction, the lower end of the second reinforcing steel bar extends into the first beam and is fixedly connected with the first beam, and a separation layer abutted to the second beam is paved on the upper side face of the second connecting piece.
Preferably, the first beam is provided with a first roughening region connected with the first connecting piece at the bottom of the first connecting piece.
Preferably, the first beam is provided with a first reinforcement hole for allowing the first reinforcement to extend into at the position of the first roughening region.
Preferably, the first beam is provided with a second roughening region connected with the second connecting piece at the bottom of the second connecting piece.
Preferably, the first beam is provided with a second reinforcement hole in the second roughening region for allowing the second reinforcement to extend into.
Preferably, the first connecting piece and the second connecting piece are internally provided with reinforcing mesh pieces.
Preferably, the first connector is located in the middle of the first beam.
Preferably, at least two of the second connectors are provided, and the first connector is located at a position between two of the second connectors.
The second aspect of the invention provides a method for reinforcing an enlarged cross section of point location connection, which comprises the following steps:
cutting a first roughening region into an upper side of the first beam;
Vertically implanting first reinforcing steel bars into the first beam in the first roughening region;
Pouring a first connecting piece in the first roughening area by adopting concrete, so that the first connecting piece coats the middle section of the first steel bar;
and pouring a second beam which coats the upper end of the first steel bar on the upper side surface of the first connecting piece by adopting concrete.
The point-connected reinforced structure with the increased cross section has the advantages that the first beam is connected with the second beam through the first steel bars and the first connecting piece, vertical force and horizontal force can be transmitted between the second beam and the first beam, the first beam is cooperatively deformed, the purposes of improving bearing capacity of the first beam and reinforcing the first beam are achieved, compared with a traditional reinforced mode with the increased cross section, the reinforced structure with the increased cross section greatly reduces the chiseling area of a new concrete connecting surface and an old concrete connecting surface, the reduced chiseling area ratio is about 90%, the bar planting quantity is greatly reduced, the reduction ratio is about 70%, the damage of the reinforced mode to the original structure is small, the construction is convenient, the construction quality is high, the construction noise is smaller, and the reinforced structure is more environment-friendly.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic cross-sectional view of a point-to-point joined reinforced structure of a first aspect of the present invention;
FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the structure B-B of FIG. 1;
Fig. 4 is a schematic cross-sectional structure of C-C in fig. 1.
In the figure, 100 parts of a first beam, 130 parts of a first roughening region, 131 parts of a first reinforcement hole, 140 parts of a second roughening region, 141 parts of a second reinforcement hole, 200 parts of a second beam, 300 parts of a first connecting piece, 310 parts of a first reinforcement, 400 parts of a second connecting piece, 410 parts of a second reinforcement, 420 parts of a separation layer, 500 parts of a reinforcement mesh.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 4, an enlarged cross-section reinforcing structure for point connection according to an embodiment of the present invention will be described.
Referring to fig. 1 and 2, the point-to-point connection enlarged-section reinforcement structure of the embodiment of the present invention includes a first beam 100, a second beam 200, and a first connection member 300, the second beam 200 being positioned above the first beam 100, an upper side of the first beam 100 being connected to the second beam 200 through the first connection member 300, the first connection member 300 being provided with a first reinforcement bar 310 disposed in a vertical direction, an upper end of the first reinforcement bar 310 being inserted into the second beam 200 and fixedly connected to the second beam 200, and a lower end of the first reinforcement bar 310 extending into the first beam 100 and fixedly connected to the first beam 100.
The first beam 100 may be a built vehicle section structural beam or a built structural beam, the second beam 200 is a new built beam, the second beam 200 is connected with the first beam 100 through the first connector 300, the upper end of the first reinforcing steel bar 310 on the first connector 300 is inserted into the second beam 200, the lower end of the first reinforcing steel bar 310 is implanted into the first beam 100, so that the first beam 100 and the second beam 200 can transmit vertical force and horizontal force, and the first beam 100 and the second beam 200 are cooperatively deformed, thereby achieving the purposes of improving the bearing capacity of the first beam 100 and reinforcing the first beam 100. It should be noted that, in order to make the connection between the first connector 300 and the first beam 100 more stable, the upper side of the first beam 100 cuts the first roughened area 130 in the projection range of the first connector 300 to enhance the connection tightness of the new concrete and the old concrete, and the upper side of the first beam 100 does not need to be cut in the rest of the first connector 300, compared with the conventional reinforcement mode with an increased cross section, the whole upper side of the first beam 100 (i.e. the original beam) does not need to be cut, so that the cutting area of the connection surface of the new concrete and the old concrete can be greatly reduced, and the reduced cutting proportion is about 90%. Moreover, compared with the traditional reinforcing mode with increased section, the reinforcing method does not need to uniformly drill holes on the whole upper side face of the first beam 100 (namely the original beam), so that the reinforcing quantity is greatly reduced, and the ratio is reduced by about 70%.
The first beam 100 of the point-to-point connection enhanced cross section reinforcing structure is connected with the second beam 200 through the first steel bars 310 and the first connecting pieces 300, so that the transmission of vertical force and horizontal force between the second beam 200 and the first beam 100 can be realized, the second beam 200 and the first beam 100 can be cooperatively deformed, the purposes of enhancing the bearing capacity of the first beam 100 and reinforcing the first beam 100 are achieved, compared with the traditional enhanced cross section reinforcing mode, the enhanced cross section reinforcing mode can greatly reduce the chiseling area of new and old concrete connecting surfaces by about 90% and the reduced chiseling area ratio, and secondly, the reinforcement planting amount is greatly reduced by about 70% and the reinforcing mode has the advantages of small damage to the original structure, convenient construction, high construction quality, lower construction noise and environmental protection.
In the preferred embodiment of the present invention, referring to fig. 1 and 3, the increased cross-section reinforcement structure of the spot connection further includes a second connection member 400 connected to the upper side of the first beam 100, the second connection member 400 is provided with a second reinforcement bar 410 disposed in a vertical direction, the lower end of the second reinforcement bar 410 is implanted into the first beam 100 and fixedly connected to the first beam 100, the upper end of the second reinforcement bar 410 extends to the upper side of the second connection member 400, and a separation layer 420 abutting against the second beam 200 is laid on the upper side of the second connection member 400. The second connecting piece 400 is located right below the position of the second beam 200 for setting the bearing column or the vertical intersecting beam and other concentrated forces, the second connecting piece 400 is separated from the second beam 200 through the separation layer 420, only vertical forces are transmitted between the second connecting piece 400 and the second beam 200, the second connecting piece 400 is abutted to support the second beam 200 through the separation layer 420, the second connecting piece 400 can transmit the vertical forces transmitted by the bearing column or the bearing beam, the first beam 100 and the second beam 200 are coordinated to deform and bear force together, and the bearing capacity is improved. It should be noted that, the second connecting piece 400 abuts against the second beam 200, so that the supporting positions of the first beam 100 and the second beam 200 can be increased, and the stress of the first beam 100 is more uniform.
In a preferred embodiment of the present invention, referring to fig. 1 and 4, the first connector 300 is connected to the upper side of the middle section of the first beam 100.
In some specific embodiments, when the first beam 100 is smaller than 6 meters, only one first connector 300 may be provided at the middle of the first beam 100, and connected to the second beam 200 only by the first connector 300.
It should be noted that, when the first beam 100 is greater than 6 meters, there are at least two second connectors 400, and the first connector 300 is located between two second connectors 400. At least two vertical stress points are located at both sides of the first connector 300, so that the stress of the second beam 200 and the first beam 100 is more uniform, and the bearing capacity is improved.
In a preferred embodiment of the present invention, referring to fig. 1 and 2, the first beam 100 is provided with a first roughening region 130 connected to the first connector 300 at a position of the bottom of the first connector 300. The first connector 300 is a cast-in-place member, and encloses the first rebar 310. The first roughened region 130 may allow the first connector 300 to be more firmly bonded to the first beam 100, improving structural strength.
In a preferred embodiment of the present invention, referring to fig. 1 and 2, the first beam 100 is provided with a first reinforcement bar hole 131 for the first reinforcement bar 310 to extend into at a position of the first roughening region 130. The first reinforcement holes 131 can be formed by electric drills, and the positions of the first reinforcement holes 131 need to avoid the reinforcement bars in the first beam 100, so as to avoid damaging the first beam 100. The first reinforcement bar 310 may be fixed in the first reinforcement bar hole 131 by using a reinforcement bar planting adhesive.
In a preferred embodiment of the present invention, referring to fig. 1 and 3, the first beam 100 is provided with a second roughening region 140 connected to the second connector 400 at a position of the bottom of the second connector 400. The second connector 400 is a cast-in-place member that encloses the second rebar 410. The second roughened area 140 may make the second connector 400 more firmly bonded to the first beam 100, improving structural strength.
In a preferred embodiment of the present invention, referring to fig. 1 and 3, the first beam 100 is provided with a second reinforcement hole 141 for inserting a second reinforcement bar 410 in the second roughening region 140. The second reinforcement holes 141 can be formed by electric drill, and the second reinforcement holes 141 need to avoid the reinforcement bars in the first beam 100, so as to avoid damaging the first beam 100. The second reinforcement bar 410 may be fixed in the second reinforcement bar hole 141 by using a reinforcement bar planting adhesive.
In a preferred embodiment of the present invention, referring to fig. 1,2 and 3, a reinforcing mesh 500 is provided in each of the first and second connectors 300 and 400. The first connecting piece 300 and the second connecting piece 400 are respectively provided with two layers of reinforcing mesh pieces 500, and the reinforcing mesh pieces 500 not only can improve the structural strength of the connecting piece, but also can disperse the vertical force of the first connecting piece 300 and the second connecting piece 400 and improve the bearing capacity of the first connecting piece 300 and the second connecting piece 400. Two layers of reinforcing mesh 500 may be gradually put in as the first connector 300 and the second connector 400 are cast-in-place to form the first connector 300 and the second connector 400 with the reinforcing mesh 500.
In a preferred embodiment of the present invention, the separation layer 420 is an asphalt separation layer. The asphalt interlayer is an asphalt concrete layer and is a pavement paving material commonly used in the market. Wherein the thickness of the asphalt barrier layer is 1 to 3mm, optimally 2mm.
The invention also provides a method for reinforcing the enlarged cross section of the point location connection, which comprises the following steps:
The first roughening region 130 is cut on the upper side of the middle section of the first beam 100, and the second roughening region 140 can be cut on other positions of the upper side of the first beam 100, which need to bear vertical load, namely, dents are formed on the first beam 100, so that the concrete is firmly bonded, and the structural strength is improved;
The first beam 100 is vertically perforated at the first roughening region 130 and the first reinforcing bars 310 are implanted, while the second roughening region 140 may be drilled and the second reinforcing bars 410 are implanted;
The first connecting piece 300 is poured in the first roughening region 130 by adopting concrete, so that the first connecting piece 300 coats the middle section of the first reinforcing steel bars 310, and the upper ends of the two first reinforcing steel bars 310 extend out of the first connecting piece 300, thereby being convenient for connecting the second beam 200;
The second beam 200 covering the upper end of the first reinforcement bar 310 is poured on the upper side of the first connector 300 using concrete.
It should be noted that, when the first steel bar 310 and the second steel bar 410 are implanted into the first beam 100, an electric drill may be used to open the first steel bar implanting hole 131 and the second steel bar implanting hole 141 at the positions avoiding the steel bars in the first beam 100, and then the first steel bar 310 and the second steel bar 410 are respectively fixed at the first steel bar implanting hole 131 and the second steel bar implanting hole 141 by using the steel bar implanting glue.
It should be noted that, the first connector 300 and the second connector 400 may be placed into the reinforcing mesh 500 during cast-in-place, so as to improve the structural strength of the first connector 300 and the second connector 400 and improve the bearing capacity.
The first beam 100 of the point-to-point connection increased cross section reinforcing method is connected with the second beam 200 through the first reinforcing steel bars 310 and the first connecting pieces 300, so that the transmission of vertical force and horizontal force between the second beam 200 and the first beam 100 can be realized, the second beam 200 and the first beam 100 can be deformed cooperatively, the purposes of improving the bearing capacity of the first beam 100 and reinforcing the first beam 100 are achieved, compared with the traditional increased cross section reinforcing mode, the drilling area of new and old concrete connecting surfaces can be greatly reduced, the reduced drilling area ratio is about 90%, and secondly, each first beam 100 is connected with the second beam by adopting the first reinforcing steel bars 310 only at the first connecting pieces 300, the planting amount is greatly reduced, the reduction ratio is about 70%, the damage of the reinforcing mode to an original structure is small, the construction is convenient, the construction quality is high, the construction noise is smaller, and the method is more environment-friendly.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (9)
1. An enlarged cross-section reinforcing structure for point location connection, comprising:
A first beam, a second beam, a first connector, and a second connector connected to an upper side of the first beam;
The first connecting piece is provided with a first reinforcing steel bar arranged along the vertical direction, the upper end of the first reinforcing steel bar is inserted into the second beam and fixedly connected with the second beam, and the lower end of the first reinforcing steel bar extends into the first beam and is fixedly connected with the first beam;
The second connecting piece is provided with a second reinforcing steel bar arranged along the vertical direction, the lower end of the second reinforcing steel bar extends into the first beam and is fixedly connected with the first beam, the upper side surface of the second connecting piece is paved with a separation layer which is abutted to the second beam, and a preset interval is arranged between the first connecting piece and the second connecting piece.
2. The enlarged cross-section reinforcement structure of point-to-point connection of claim 1, wherein the first beam defines a first roughened area at a location at the bottom of the first connector for connection with the first connector.
3. The enlarged cross-section reinforcement structure of point connection of claim 2, wherein the first beam is provided with a first reinforcement hole for inserting the first reinforcement bar at the position of the first roughening region.
4. The enlarged cross-section reinforcement structure of point-to-point connection of claim 1, wherein the first beam defines a second roughened area at a location at the bottom of the second connector for connection with the second connector.
5. The enlarged cross-section reinforcement structure of point connection of claim 4, wherein the first beam is provided with a second reinforcement hole for inserting the second reinforcement in the second roughened area.
6. The enlarged cross-section reinforcement structure of point connection of claim 4, wherein the first and second connectors are each provided with a mesh of reinforcement.
7. The point-to-point joint enlarged cross-section reinforcement structure of claim 1, wherein the first connector is connected to an upper side of the middle section of the first beam.
8. The enlarged cross-section reinforcement structure of a point joint according to claim 7, wherein at least two of said second connectors are positioned between two of said second connectors.
9. A method of reinforcing a structure of increased cross section for point connections according to any one of claims 1 to 8, characterized in that:
cutting a first roughening region into an upper side of the first beam;
Vertically implanting first reinforcing steel bars into the first beam in the first roughening region;
Pouring a first connecting piece in the first roughening area by adopting concrete, so that the first connecting piece coats the middle section of the first steel bar;
and pouring a second beam which coats the upper end of the first steel bar on the upper side surface of the first connecting piece by adopting concrete.
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| JP4003911B2 (en) * | 1999-11-08 | 2007-11-07 | 清水 紀男 | Reinforced reinforced concrete reinforced wall and method for forming reinforced wall |
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| KR101219995B1 (en) * | 2012-03-12 | 2013-01-09 | (주)한국건설공법 | A temporary brace and a composite steel girder, a shift section steel girder used an building structure and thereof construction method |
| KR20140007147A (en) * | 2012-07-09 | 2014-01-17 | 황판용 | A strengthening structure of a reinforced concrete beam and slab |
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| KR102093070B1 (en) * | 2019-08-05 | 2020-03-24 | 주식회사 에스엠피건설 | A seismic portal structures attached in-plane square framed type strengthened by level-gap plates and sleeve-cap anchors |
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