Reinforced concrete prefabricated part and method for connecting steel-reinforced continuous reinforcement

Abstract

The application belongs to the technical field of prefabricated part connection, and discloses a reinforced concrete prefabricated part and a method for connecting a steel-bonding tie bar, which comprises the following: an upper prefabricated part, the bottom of the upper prefabricated part is provided with an upper plate cap, the upper prefabricated part is provided with upper structural bars, the upper structural bars extend out of the upper prefabricated part and penetrate through the upper plate cap; a lower prefabricated part, the top of the lower prefabricated part is also provided with a lower plate cap, the upper plate cap is connected with the lower plate cap, the lower prefabricated part is provided with lower structural bars, and the layout of the lower structural bars is consistent with the layout of the upper structural bars; a sleeve provided in the lower prefabricated part; the lower end of the sleeve is connected with the lower structural bars, and the upper end of the sleeve is connected with the upper structural bars; the sleeve is provided with structural glue; the structural bars inside the prefabricated part play an important role and can transmit loads after being connected, so that multiple prefabricated parts can jointly bear load effects like a whole structure; the connection is not affected by the site and the environment, the construction speed is fast, the strength of the key connection point can be ensured, and material waste is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated part connection, and more particularly to a reinforced concrete prefabricated part and a method for connecting a steel adhered reinforcing bar. BACKGROUND

[0002] With the increasing prevalence of prefabricated buildings, more and more engineering buildings use factory prefabrication and on-site pouring of key connection points to ensure the normal use of the building and make the speed of construction engineering change rapidly. However, due to the various forms of building structures, in some specific structures, anchoring more reinforcing bars and secondary pouring of concrete at the key connection points to enhance the stability of the structure will increase the construction difficulty and waste materials.

[0003] Therefore, the present application provides a method for connecting a steel adhered reinforcing bar of a reinforced concrete prefabricated part to solve the above problems and ensure the construction speed and the strength of the connection point. SUMMARY

[0004] To solve the above problems, the present application provides a method for connecting a steel adhered reinforcing bar of a reinforced concrete prefabricated part.

[0005] The method for connecting a steel adhered reinforcing bar of a reinforced concrete prefabricated part provided by the present application adopts the following technical solution:

[0006] The reinforced concrete prefabricated part comprises:

[0007] An upper prefabricated part is provided with an upper cap at the bottom, and an upper structural reinforcing bar is arranged in the upper prefabricated part and extends out of the upper prefabricated part and penetrates through the upper cap;

[0008] A lower prefabricated part is also provided with a lower cap at the top, and the upper cap is connected to the lower cap; a lower structural reinforcing bar is arranged in the lower prefabricated part, and the layout of the lower structural reinforcing bar is consistent with that of the upper structural reinforcing bar;

[0009] A sleeve is arranged in the lower prefabricated part and consistent with the layout of the lower structural reinforcing bar, and a hole consistent with the layout of the sleeve is arranged on the lower cap; the lower end of the sleeve is connected to the lower structural reinforcing bar, and the upper end of the sleeve is connected to the upper structural reinforcing bar; and structural glue is arranged in the sleeve.

[0010] Through the above technical solution, the structural glue and the cap with excellent strength performance are used to connect and assemble multiple prefabricated parts into a whole, so that the connection point has high strength, the structural reinforcing bars inside the prefabricated parts play an important role in connecting and transmitting loads to each other, ensuring that multiple prefabricated parts can jointly bear loads like a whole structure; the connection is not affected by the site and the environment, the construction speed is fast, the strength of the key connection point can be ensured, and material waste can be avoided.

[0011] Further, the upper plate cap and the lower plate cap are of the same structure and include a cap top, a cap barrel and a cap brim, the cap brim of the upper plate cap is fixedly connected with the cap brim of the lower plate cap, and the connection mode includes but is not limited to a bolt pair; the shape of the cap top is consistent with the shape of the upper and lower prefabricated parts.

[0012] By the above technical solution, the bolt pair can make the two as close as possible with the help of a circle of bolts outside the cap brim, and the number of the bolt pair needs to be as large as possible without affecting the cap brim.

[0013] Further, the material of the upper plate cap, the lower plate cap and the sleeve includes but is not limited to steel; the type of the upper and lower constructional bars includes but is not limited to ribbed steel bars.

[0014] By the above technical solution, the steel has high strength, good heat resistance and toughness; the bonding and anchoring performance between the ribbed steel bar and the concrete is good.

[0015] Further, the inner wall of the sleeve is of a threaded structure, the thread diameter at the connection between the sleeve and the upper constructional bar is larger than the diameter of the upper constructional bar; the lower constructional bar is threadedly connected with the sleeve.

[0016] By the above technical solution, the large-diameter upper part and the small-diameter lower part of the sleeve can facilitate the convenient and accurate insertion of the upper constructional bar into the sleeve, and the threaded structure on the upper part is used to increase the contact area with the structural adhesive and the length of the insertion of the constructional bar, and to strengthen the strength of the connection point.

[0017] Further, the material of the structural adhesive includes but is not limited to modified epoxy resin.

[0018] By the above technical solution, the modified epoxy resin can be used to paste steel and steel, steel and concrete, concrete and concrete and other materials, and has high bonding strength and excellent toughness, peel strength and impact resistance.

[0019] The method for connecting the steel-bonded reinforcement includes the following steps:

[0020] S1, cutting the upper plate cap and the lower plate cap according to the design drawing and accurately prefabricating the related prefabricated parts;

[0021] S2, first, the lower prefabricated part is made, the sleeve is threadedly connected with the lower constructional bar, and a part of the length of the upper end of the sleeve is reserved for connecting the upper constructional bar, then the lower plate cap is fixedly connected with the sleeve by using a method including but not limited to welding, and then the lower prefabricated part is poured and manufactured, and the top of the sleeve is kept exposed during pouring the lower prefabricated part;

[0022] S3, then manufacture the upper prefabricated part, fix the upper plate cap and the upper structural rib by using a method including but not limited to welding, then start pouring concrete to manufacture the upper prefabricated part and keep part of the upper structural rib exposed outside the upper prefabricated part, and the exposed length is equal to or less than the length reserved at the upper end of the sleeve;

[0023] S4, before installation, clean the part reserved inside the sleeve for connecting the upper structural rib, then fill the structure glue in it;

[0024] S5, insert the upper structural rib into the reserved space in the sleeve, then connect the upper plate cap and the lower plate cap by using a bolt pair, the bolt pair is arranged to make the upper prefabricated part and the lower prefabricated part as close as possible, after the structure glue is solidified, the connection of the prefabricated parts is completed.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] (1) The structural glue and the plate cap with excellent strength performance are used to connect and assemble multiple prefabricated parts into a whole, so that the connection point has high strength, the structural rib inside the prefabricated part plays an important role in connecting and transmitting load, and multiple prefabricated parts can jointly bear the load like a whole structure; the connection is not affected by the site and environment, the construction speed is fast, the strength of the key connection point can be ensured, and material waste is avoided;

[0027] (2) The inner wall of the sleeve is a threaded structure, the thread diameter at the connection between the sleeve and the upper structural rib is greater than the diameter of the upper structural rib; the lower structural rib is connected with the sleeve by threads; the sleeve is large at the top and small at the bottom, which can facilitate the convenient and accurate insertion of the upper structural rib into the sleeve, and the threaded structure at the top is used to increase the contact area with the structure glue and the length of the structural rib insertion, and to strengthen the strength of the connection point. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of the present application;

[0029] Figure 2 is a structural schematic view of the sleeve.

[0030] Explanation of reference numerals in the drawing: 11, upper prefabricated part; 12, upper plate cap; 13, upper structural rib; 21, lower prefabricated part; 22, lower plate cap; 23, lower structural rib; 24, sleeve; 31, structure glue. DETAILED DESCRIPTION

[0031] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below; obviously, the described embodiments are only part of the embodiments of the present application, and not all the embodiments of the present application; based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For a person of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0034] Embodiments:

[0035] The following will be described in detail with reference to the accompanying drawings Figures 1-2 The present application will be further described in detail.

[0036] The embodiments of the present application disclose a reinforced concrete prefabricated part, comprising:

[0037] The upper prefabricated part 11 is provided with an upper plate cap 12 at the bottom, and the upper prefabricated part 11 is provided with an upper structural reinforcement 13 inside, which extends out of the upper prefabricated part 11 and penetrates through the upper plate cap 12;

[0038] The lower prefabricated part 21 is also provided with a lower plate cap 22 at the top, and the upper plate cap 12 is connected with the lower plate cap 22; the lower prefabricated part 21 is provided with a lower structural reinforcement 23 inside, and the layout of the lower structural reinforcement 23 is consistent with that of the upper structural reinforcement 13;

[0039] The sleeve 24 is arranged in the lower prefabricated part 21 and is consistent with the arrangement of the lower structural rib 23, and the lower plate cap 22 is provided with a hole consistent with the arrangement of the sleeve 24; the lower end of the sleeve 24 is connected with the lower structural rib 23, and the upper end of the sleeve 24 is connected with the upper structural rib 13; and the sleeve 24 is provided with a structural glue 31.

[0040] Referring to Figure 1 The upper plate cap 12 is the same as the lower plate cap 22 in structure and comprises a cap top, a cap barrel and a cap brim, the cap brim of the upper plate cap 12 is fixedly connected with the cap brim of the lower plate cap 22, and the connection mode comprises but is not limited to a bolt pair; the shape of the cap top is consistent with the shape of the upper prefabricated part 11 and the lower prefabricated part 21, which can be circular, square or strip-shaped, and is made according to actual construction requirements; the bolt pair can make the two as close as possible with the help of a circle of bolts outside the cap brim, and the number of the bolt pair needs to be as large as possible without affecting the cap brim.

[0041] Referring to Figure 1 The material of the upper plate cap 12, the lower plate cap 22 and the sleeve 24 comprises but is not limited to steel; and the type of the upper structural rib 13 and the lower structural rib 23 comprises but is not limited to ribbed steel bar; the steel has high strength, good heat resistance and toughness; and the adhesion and anchoring performance between the ribbed steel bar and the concrete is good.

[0042] Referring to Figure 2 The inner wall of the sleeve 24 is a threaded structure, the thread diameter of the connection between the sleeve 24 and the upper structural rib 13 is larger than the diameter of the upper structural rib 13; the lower structural rib 23 is connected with the sleeve 24 in a threaded mode; the upper part of the sleeve 24 is provided with a large diameter and the lower part is provided with a small diameter, which can facilitate the convenient and accurate insertion of the upper structural rib 13 into the sleeve 24, and the threaded structure at the upper part is used to increase the contact area with the structural glue 31 and the length of the structural rib insertion, and to strengthen the strength of the connection point.

[0043] Referring to Figure 2 The material of the structural glue 31 comprises but is not limited to modified epoxy resin; the modified epoxy resin can be used to paste steel and steel, steel and concrete, concrete and concrete and other materials, and has high paste strength and excellent toughness, peel strength and impact resistance.

[0044] The method for connecting the steel and the structural rib comprises the following steps:

[0045] S1, cutting the upper plate cap 12 and the lower plate cap 22 according to the design drawing and precisely prefabricating the related prefabricated parts;

[0046] S2, first make the lower prefabricated part 21, thread the sleeve 24 to the lower construction rib 23 and reserve a length at the upper end of the sleeve 24 for connecting the upper construction rib 13, then fix the lower plate cap 22 to the sleeve 24 by using a method including but not limited to welding, then cast the lower prefabricated part 21, keep the top of the sleeve 24 exposed during the casting of the lower prefabricated part 21;

[0047] S3, then make the upper prefabricated part 11, fix the upper plate cap 12 to the upper construction rib 13 by using a method including but not limited to welding, then start casting the upper prefabricated part 11 and reserve a part of the upper construction rib 13 exposed outside the upper prefabricated part 11, and the exposed length is equal to or less than the length reserved at the upper end of the sleeve 24;

[0048] S4, before installation, clean the part reserved inside the sleeve 24 for connecting the upper construction rib 13, then fill the structure glue 31 in it;

[0049] S5, insert the upper construction rib 13 into the reserved space in the sleeve 24, then connect the upper plate cap 12 to the lower plate cap 22 by using a bolt pair or the like, the upper prefabricated part 11 and the lower prefabricated part 21 are as close as possible through the setting of the bolt pair, after the structure glue 31 is solidified, the connection of the prefabricated part is completed.

[0050] The implementation principle of the reinforced concrete prefabricated part and the method for connecting the steel-reinforced continuous reinforcement according to the embodiments of the application is as follows:

[0051] The upper plate cap 12 and the lower plate cap 22 are arranged at the connection points of the two prefabricated parts to be connected, the sleeve 24 is arranged in the lower prefabricated part 21 and filled with the structure glue 31;

[0052] The structure glue 31 and the plate cap with excellent strength performance are used to connect and assemble multiple prefabricated parts into a whole, so that the connection points have high strength, the construction ribs inside the prefabricated parts play an important role and can transmit loads to each other after being connected, so as to ensure that multiple prefabricated parts can jointly bear loads like a whole structure; the connection is not affected by the site and the environment, the construction speed is fast, the strength of the key connection points can be ensured, and material waste is avoided.

[0053] The above are the preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A reinforced concrete precast element, characterised in that, The utility model relates to a prefabricated part for building, which comprises: an upper prefabricated part (11) provided with an upper plate cap (12) at the bottom, and provided with an upper structural rib (13) inside, which extends out of the upper prefabricated part (11) and penetrates through the upper plate cap (12); a lower prefabricated part (21) also provided with a lower plate cap (22) at the top, and provided with a lower structural rib (23) inside, which is arranged in the same way as the upper structural rib (13); a sleeve (24) arranged in the lower prefabricated part (21) in the same way as the lower structural rib (23), and provided with a hole in the lower plate cap (22) in the same way as the sleeve (24); the lower end of the sleeve (24) is connected with the lower structural rib (23), and the upper end of the sleeve (24) is connected with the upper structural rib (13); and the sleeve (24) is provided with a structural adhesive (31) inside.

2. A precast reinforced concrete element according to claim 1, characterised in that: The upper plate cap (12) and the lower plate cap (22) are of the same structure and comprise a cap top, a cap barrel and a cap brim, and the cap brim of the upper plate cap (12) is fixedly connected with the cap brim of the lower plate cap (22) in the form of a bolt pair; the shape of the cap top is consistent with the shape of the upper prefabricated part (11) and the lower prefabricated part (21).

3. A precast reinforced concrete element according to claim 1, characterised in that: The materials of the upper plate cap (12), the lower plate cap (22) and the sleeve (24) are steel; and the types of the upper structural rib (13) and the lower structural rib (23) are ribbed steel bars.

4. A precast reinforced concrete element according to claim 1, characterised in that: The inner wall of the sleeve (24) is of a threaded structure, the thread pitch at the connection between the sleeve (24) and the upper structural rib (13) is greater than the diameter of the upper structural rib (13); and the lower structural rib (23) is threadedly connected with the sleeve (24).

5. A precast reinforced concrete element according to claim 1, characterised in that: The material of the structural adhesive (31) is modified epoxy resin.

6. A method of connecting a steel adherend, characterized by The method comprises the following steps: S1, cutting the upper plate cap (12) and the lower plate cap (22) according to the design drawings, and precisely prefabricating relevant prefabricated parts; S2, first, manufacturing the lower prefabricated part (21), threadedly connecting the sleeve (24) with the lower structural rib (23) and reserving a part of the length of the upper end of the sleeve (24) for connecting the upper structural rib (13), then fixedly connecting the lower plate cap (22) with the sleeve (24) by using the welding method, and then pouring and manufacturing the lower prefabricated part (21), and keeping the top of the sleeve (24) exposed during the pouring of the lower prefabricated part (21); S3, then, manufacturing the upper prefabricated part (11), fixedly connecting the upper plate cap (12) with the upper structural rib (13) by using the welding method, and then starting to pour and manufacture the upper prefabricated part (11) and reserving a part of the upper structural rib (13) exposed outside the upper prefabricated part (11), and the exposed length is equal to or less than the length reserved at the upper end of the sleeve (24); S4, before installation, cleaning the part reserved inside the sleeve (24) for connecting the upper structural rib (13), and then filling the structural adhesive (31) therein. S5, the upper structure muscle (13) is inserted into the space reserved in the sleeve (24), and then the upper plate cap (12) is connected with the lower plate cap (22) by using bolt pair. The bolt pair is arranged to make the upper prefabricated part (11) and the lower prefabricated part (21) as close as possible. After the structure glue (31) is cured, the connection of the prefabricated part is completed.

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