A point-connected, cross-section-enlarged reinforcement structure and method thereof

Abstract

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 method of increasing the cross-section reinforcement, the chiseling area of ​​the connection surface between the new and old concrete is greatly reduced, and the proportion of the reduced chiseling area is about 90%; secondly, the amount of drilling and embedding reinforcement 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

[0001] The invention relates to the technical field of building structures, and in particular to a point-connected enlarged cross-section reinforcement structure and a method thereof. Background Art

[0002] The depot roof development project is one of the TOD project types, and the number of depot roof development projects is increasing across the country. Compared with traditional projects, depot roof projects have the following structural characteristics, such as: the roof is built on the existing depot structure, and there are problems such as structural conversion and complex connection between the new and old structures; the safety level of the existing depot structure is high, and the use function is not allowed to be interrupted; the construction of the roof cannot affect the structural safety and use of the depot. The conversion beam of the roof structure generally adopts the traditional method of increasing the cross-section reinforcement, that is, the concrete surface layer is chiseled on the entire upper side of the original beam, and then holes are drilled on the original beam, and multiple steel bars are implanted. Finally, a new beam wrapped with steel bars is cast above the original beam, so that the new beam fits the entire original beam to increase the cross-section and achieve the purpose of reinforcement. However, this method requires a large amount of chiseling at the connection between the new and old concrete, and the vibration generated during the chiseling process can easily cause the hanging wire tube of the depot under the roof to fall off; and the amount of drilling and planting reinforcement is large, and drilling and planting reinforcement will cause great damage to the original structural components, affecting the structural quality and increasing the risk of planting reinforcement penetrating the floor slab. Summary of the invention

[0003] The purpose of the present invention is to provide a point-connected enlarged cross-section reinforcement structure to solve the technical problems of large amount of chiseling of the original beam and large amount of embedded reinforcement in the prior art.

[0004] In order to achieve the above-mentioned object, the first aspect of the present invention provides a point-connected enlarged cross-section reinforcement structure, comprising:

[0005] a first beam, a second beam, and a first connecting member;

[0006] The second beam is located above the first beam; 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 arranged along the vertical direction, the upper end of the first steel bar is inserted into the second beam and fixedly connected to the second beam, and the lower end of the first steel bar extends into the first beam and fixedly connected to the first beam.

[0007] Preferably, the point-connected enlarged cross-section reinforcement structure also includes: a second connecting member connected to the upper side surface of the first beam; the second connecting member is provided with a second steel bar arranged along the vertical direction; the lower end of the second steel bar extends into the first beam and is fixedly connected to the first beam, and the upper side surface of the second connecting member is paved with a partition layer abutting against the second beam.

[0008] Preferably, the first beam is provided with a first roughening area connected to the first connecting member at a bottom of the first connecting member.

[0009] Preferably, the first beam is provided with a first reinforcing bar embedding hole at the position of the first roughening area for allowing the first reinforcing bar to extend therein.

[0010] Preferably, the first beam is provided with a second roughening area connected to the second connecting member at the bottom of the second connecting member.

[0011] Preferably, the first beam is provided with a second reinforcement hole in the second roughening area for the second reinforcement to extend into.

[0012] Preferably, steel mesh is provided in both the first connecting member and the second connecting member.

[0013] Preferably, the first connecting member is located in the middle section of the first beam.

[0014] Preferably, there are at least two second connecting members, and the first connecting member is located between two of the second connecting members.

[0015] A second aspect of the present invention provides a method for increasing the cross-section of a point connection, which is:

[0016] Chiseling a first roughening area on the upper side of the first beam;

[0017] vertically implanting a first steel bar into the first beam in the first roughening area;

[0018] Casting a first connecting member in the first roughened area with concrete so that the first connecting member covers the middle section of the first steel bar;

[0019] A second beam covering the upper end of the first steel bar is cast on the upper side of the first connecting member using concrete.

[0020] The invention provides a point-connected enlarged cross-section reinforcement structure, which has the following beneficial effects: the first beam is connected to the second beam by the first steel bar and the first connecting piece, so that the second beam and the first beam can realize the transmission of vertical force and horizontal force, and cooperate with each other to deform, so as to achieve the purpose of improving the bearing capacity of the first beam and reinforcing the first beam; compared with the traditional method of enlarging the cross-section reinforcement, the chiseling area of ​​the connection surface between the new and old concrete is greatly reduced, and the proportion of the reduced chiseling area is about 90%; secondly, the amount of embedded steel bars is greatly reduced, and the reduction ratio is about 70%, and the reinforcement method causes little damage to the original structure, is convenient to construct, has high construction quality, lower construction noise, and is more environmentally friendly.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic cross-sectional structure diagram of a point-connected enlarged cross-section reinforcement structure according to an embodiment of the first aspect of the present invention;

[0023] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0024] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle BB;

[0025] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure of CC.

[0026] In the figure, 100, the first beam; 130, the first roughened area; 131, the first rebar embedding hole; 140, the second roughened area; 141, the second rebar embedding hole; 200, the second beam; 300, the first connecting piece; 310, the first steel bar; 400, the second connecting piece; 410, the second steel bar; 420, the partition layer; 500, the steel mesh. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Please also read Figures 1 to 4 Now, the point-connected enlarged cross-section reinforcement structure provided by an embodiment of the present invention is described.

[0032] Reference Figure 1 and Figure 2 The point-connected enlarged cross-section reinforcement structure of the embodiment of the present invention includes a first beam 100, a second beam 200, and a first connecting member 300; the second beam 200 is located above the first beam 100; the upper side of the first beam 100 is connected to the second beam 200 through the first connecting member 300; the first connecting member 300 is provided with a first steel bar 310 arranged in a vertical direction, the upper end of the first steel bar 310 is inserted into the second beam 200 and fixedly connected to the second beam 200, and the lower end of the first steel bar 310 extends into the first beam 100 and is fixedly connected to the first beam 100.

[0033] The first beam 100 can be an already built vehicle section structural beam or an already built structural beam, and the second beam 200 is a newly built beam. The second beam 200 is connected to the first beam 100 through a first connecting member 300. The upper end of the first steel bar 310 on the first connecting member 300 is inserted into the second beam 200, and the lower end of the first 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, so that the first beam 100 and the second beam 200 can deform cooperatively, thereby achieving the purpose 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 connecting member 300 and the first beam 100 more stable, the first roughening area 130 is chiseled on the upper side of the first beam 100 within the projection range of the first connecting member 300 to strengthen the connection tightness between the new and old concretes. The upper side of the first beam 100 does not need to be chiseled in the rest of the first connecting member 300. Compared with the traditional method of increasing the cross-section reinforcement, it is not necessary to chisel the entire upper side of the first beam 100 (i.e., the original beam), which can greatly reduce the chiseling area of ​​the connection surface between the new and old concretes, and the reduction ratio is about 90%. Moreover, compared with the traditional method of increasing the cross-section reinforcement, it is not necessary to evenly drill holes on the entire upper side of the first beam 100 (i.e., the original beam) to plant reinforcement, which greatly reduces the amount of planted reinforcement, and the reduction ratio is about 70%.

[0034] The first beam 100 of the point-connected enlarged cross-section reinforcement structure of the present invention is connected to the second beam 200 through the first steel bar 310 and the first connecting piece 300, so that the second beam 200 and the first beam 100 can achieve vertical and horizontal force transmission, and the second beam 200 and the first beam 100 can be deformed cooperatively to achieve the purpose of improving the bearing capacity of the first beam 100 and reinforcing the first beam 100; compared with the traditional enlarged cross-section reinforcement method, the chiseling area of ​​the new and old concrete connection surfaces can be greatly reduced, and the proportion of the reduced chiseling area is about 90%; secondly, the amount of embedded reinforcement is greatly reduced, and the reduction ratio is about 70%, and the reinforcement method has little damage to the original structure, is convenient to construct, has high construction quality, has lower construction noise, and is more environmentally friendly.

[0035] In a preferred embodiment of the present invention, referring to Figure 1 and Figure 3 The point-connected enlarged cross-section reinforcement structure also includes: a second connector 400 connected to the upper side of the first beam 100; the second connector 400 is provided with a second steel bar 410 arranged in the vertical direction; the lower end of the second steel bar 410 is implanted in the first beam 100 and fixedly connected to the first beam 100, the upper end of the second steel bar 410 extends to the upper side of the second connector 400, and the upper side of the second connector 400 is paved with a partition layer 420 that abuts against the second beam 200. The second connector 400 is located directly below the position of the second beam 200 where the concentrated force is set, such as a load-bearing column or a vertically intersecting beam. The second connector 400 is separated from the second beam 200 by the partition layer 420, and only vertical force is transmitted between the two. The second connector 400 abuts against and supports the second beam 200 through the partition layer 420, so that the second connector 400 can transmit the vertical force transmitted by the load-bearing column or the load-bearing beam, coordinate the deformation of the first beam 100 and the second beam 200, and bear the force together to improve the bearing capacity. It should be noted that, by using the second connecting member 400 to abut against the second beam 200 , the support position of the first beam 100 and the second beam 200 can be increased, so that the force on the first beam 100 is more uniform.

[0036] In a preferred embodiment of the present invention, referring to Figure 1 and Figure 4 The first connecting member 300 is connected to the upper side surface of the middle section of the first beam 100 .

[0037] In some special embodiments, when the first beam 100 is less than 6 meters, only one first connecting member 300 may be provided in the middle section of the first beam 100 , and the first connecting member 300 is used to connect the first beam 100 to the second beam 200 .

[0038] It should be noted that when the first beam 100 is longer than 6 meters, there are at least two second connectors 400, and the first connector 300 is located between two of the second connectors 400. At least two vertical force points are located on both sides of the first connector 300, so that the force on the second beam 200 and the first beam 100 is more uniform, thereby improving the bearing capacity.

[0039] In a preferred embodiment of the present invention, referring to Figure 1 and Figure 2 The first beam 100 is provided with a first roughened area 130 connected to the first connecting member 300 at the bottom of the first connecting member 300. The first connecting member 300 is a cast-in-place member, which is covered with a first steel bar 310. The first roughened area 130 can make the first connecting member 300 and the first beam 100 more firmly bonded, thereby improving the structural strength.

[0040] In a preferred embodiment of the present invention, referring to Figure 1 and Figure 2 The first beam 100 is provided with a first anchor hole 131 for inserting the first reinforcement 310 at the position of the first roughening area 130. The first anchor hole 131 can be opened by an electric drill, and the position of the first anchor hole 131 needs to avoid the reinforcement in the first beam 100 to avoid damaging the first beam 100. The first reinforcement 310 can be fixed in the first anchor hole 131 by anchor glue.

[0041] In a preferred embodiment of the present invention, referring to Figure 1 and Figure 3 The first beam 100 is provided with a second roughened area 140 connected to the second connecting member 400 at the bottom of the second connecting member 400. The second connecting member 400 is a cast-in-place member, which is covered with a second steel bar 410. The second roughened area 140 can make the second connecting member 400 and the first beam 100 more firmly bonded, thereby improving the structural strength.

[0042] In a preferred embodiment of the present invention, referring to Figure 1 and Figure 3 The first beam 100 is provided with a second anchor hole 141 in the second roughening area 140 for inserting the second reinforcement 410. The second anchor hole 141 can be opened by an electric drill, and the position of the second anchor hole 141 needs to avoid the reinforcement in the first beam 100 to avoid damaging the first beam 100. The second reinforcement 410 can be fixed in the second anchor hole 141 by anchor glue.

[0043] In a preferred embodiment of the present invention, referring to Figure 1 , Figure 2 and Figure 3, a steel mesh 500 is provided in both the first connector 300 and the second connector 400. Both the first connector 300 and the second connector 400 have two layers of steel mesh 500, which can not only improve the structural strength of the connector, but also disperse the vertical force of the first connector 300 and the second connector 400, thereby improving the bearing capacity of the first connector 300 and the second connector 400. When the first connector 300 and the second connector 400 are cast in place, two layers of steel mesh 500 can be gradually placed to form the first connector 300 and the second connector 400 with the steel mesh 500.

[0044] In a preferred embodiment of the present invention, the separation layer 420 is an asphalt interlayer. The asphalt interlayer is an asphalt concrete layer, which is a common road paving material on the market. The thickness of the asphalt interlayer is 1 mm to 3 mm, and optimally, 2 mm.

[0045] The present invention also provides a method for increasing the cross-section reinforcement of point connections, which is:

[0046] A first roughening area 130 is chiseled on the upper side surface of the middle section of the first beam 100; at this time, a second roughening area 140 can also be chiseled on other positions on the upper side surface of the first beam 100 that need to bear vertical loads, that is, a dent is formed on the first beam 100 to make the concrete bond more firmly and improve the structural strength;

[0047] A hole is vertically drilled in the first beam 100 at the first roughening area 130 and a first steel bar 310 is implanted; at this time, a hole can be drilled in the second roughening area 140 and a second steel bar 410 can be implanted;

[0048] The first connecting member 300 is cast in the first roughened area 130 with concrete, so that the first connecting member 300 covers the middle section of the first steel bars 310, and the upper ends of the two first steel bars 310 extend out of the first connecting member 300, so as to facilitate the connection with the second beam 200; at this time, the second connecting member 400 can also be cast in the second roughened area 140, so that the upper side of the second connecting member 400 submerges the upper end of the second steel bars 410; and at this time, the asphalt interlayer can be laid on the upper side of the second connecting member 400;

[0049] The second beam 200 covering the upper end of the first reinforcement 310 is cast on the upper side of the first connecting member 300 using concrete.

[0050] It should be noted that when implanting the first steel bar 310 and the second steel bar 410 into the first beam 100, an electric drill can be used to open the first steel bar embedding hole 131 and the second steel bar embedding hole 141 at a location avoiding the steel bars in the first beam 100, and then the first steel bar 310 and the second steel bar 410 can be fixed at the first steel bar embedding hole 131 and the second steel bar embedding hole 141 respectively using embedding glue.

[0051] It should be noted that a steel mesh 500 may be placed in the first connecting member 300 and the second connecting member 400 during cast-in-place, so as to improve the structural strength of the first connecting member 300 and the second connecting member 400 and improve the bearing capacity.

[0052] The first beam 100 of the point-connected enlarged cross-section reinforcement method of the present invention is connected to the second beam 200 through the first steel bar 310 and the first connecting piece 300, so that the second beam 200 and the first beam 100 can achieve vertical and horizontal force transmission, and the second beam 200 and the first beam 100 can be deformed cooperatively to achieve the purpose of improving the bearing capacity of the first beam 100 and reinforcing the first beam 100; compared with the traditional enlarged cross-section reinforcement method, the chiseling area of ​​the new and old concrete connection surfaces can be greatly reduced, and the proportion of the reduced chiseling area is about 90%; secondly, each first beam 100 is connected to the second beam only by the first steel bar 310 at the first connecting piece 300, which greatly reduces the amount of embedded steel bars, and the reduction ratio is about 70%, and the reinforcement method causes little damage to the original structure, is convenient to construct, has high construction quality, lower construction noise, and is more environmentally friendly.

[0053] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A point-connected enlarged cross-section reinforcement structure, characterized in that: include: A first beam, a second beam, a first connecting member, and a second connecting member connected to an upper side surface of the first beam; The second beam is located above the first beam; 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 arranged in a vertical direction, the upper end of the first steel bar is inserted into the second beam and fixedly connected to the second beam, and the lower end of the first steel bar extends into the first beam and fixedly connected to the first beam; The second connecting member is provided with a second steel bar arranged in a vertical direction; the lower end of the second steel bar extends into the first beam and is fixedly connected to the first beam, and the upper side surface of the second connecting member is paved with a partition layer abutting against the second beam; there is a preset interval between the first connecting member and the second connecting member.

2. The point-connected enlarged cross-section reinforcement structure according to claim 1, characterized in that: The first beam is provided with a first roughening area connected to the first connecting member at the bottom of the first connecting member.

3. The point-connected enlarged cross-section reinforcement structure according to claim 2, characterized in that: The first beam is provided with a first reinforcing bar embedding hole at the position of the first roughening area for the first reinforcing bar to extend into.

4. The point-connected enlarged cross-section reinforcement structure according to claim 1, characterized in that: The first beam is provided with a second roughening area connected to the second connecting member at the bottom of the second connecting member.

5. The point-connected enlarged cross-section reinforcement structure according to claim 4, characterized in that: The first beam is provided with a second reinforcing bar embedding hole in the second roughening area for the second reinforcing bar to extend therein.

6. The point-connected enlarged cross-section reinforcement structure according to claim 4, characterized in that: Steel mesh is arranged inside the first connecting member and the second connecting member.

7. The point-connected enlarged cross-section reinforcement structure according to claim 1, characterized in that: The first connecting member is connected to the upper side surface of the middle section of the first beam.

8. The point-connected enlarged cross-section reinforcement structure according to claim 7, characterized in that: There are at least two second connecting members, and the first connecting member is located between two of the second connecting members.

9. A method for increasing the cross-section of a reinforced structure by point connection according to any one of claims 1 to 8, characterized in that: Chiseling a first roughening area on the upper side of the first beam; vertically implanting a first steel bar into the first beam in the first roughening area; Casting a first connecting member in the first roughened area with concrete so that the first connecting member covers the middle section of the first steel bar; A second beam covering the upper end of the first steel bar is cast on the upper side of the first connecting member using concrete.

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