Non-contact coupling, prefabricated structure manufactured by using same, and construction method thereof

Abstract

In the process of connecting the connecting steel bars led out from the plugging part space (S) of the prefabricated structure, the connecting steel bars can be connected in a non-contact manner by using a coupler under the condition of no direct connection. The present invention relates to a non-contact coupling and a prefabricated structure manufactured using the same, and more particularly, to a non-contact coupling and a prefabricated structure manufactured using the same, the non-contact coupling comprising: connecting steel bars which are respectively led out from closure part spaces (S) communicating with each other of adjacent prefabricated structures; and a plurality of non-contact ring connecting members which are adjacent to each other and are spaced apart around the mutually separated connecting steel bars, are disposed so as to surround the connecting steel bars while filling the closure part space (S), and are connected to the closure part space (S) by means of a friction force generated after the ending slurry filled in the closure part space (S) is embedded in the non-contact ring connecting members. Adjacent connecting steel bars are connected without couplings.

Description

Technical Field

[0001] The present invention relates to a non-contact coupling and a prefabricated structure made using the same. More specifically, the present invention relates to a non-contact coupling that uses a coupling to achieve non-contact connection of connecting steel bars drawn from a blocking space (S) of a prefabricated structure without direct connection, thereby fully ensuring operability and effectiveness of construction of the prefabricated structure, a prefabricated structure made using the same, and a construction method thereof. Background Art

[0002] Figure 1a An example diagram of the coupling construction of existing prefabricated components (PC1, PC2) is shown.

[0003] That is, it can be seen that the prefabricated components (PC1, PC2) are constructed by being separately manufactured and then connected, and in order to perform such connection construction, couplings (1, 2) are used to connect the connection steel bars (CR1, CR2) led out from the prefabricated components in the sealing parts exposed to the outside.

[0004] That is, this is a method in which the female coupling (2) is fastened to the connecting steel bars of the prefabricated component (PC1) on one side, the male coupling (1) is fastened to the connecting steel bars of the prefabricated component (PC2) on the other side, and the female coupling (2) is inserted and fastened into the male coupling (1), thereby directly using the couplings (1, 2) to directly fasten the connecting steel bars (ET1, ET2).

[0005] To this end, the connecting steel bars (ET1, ET2) are connected to each other by using couplings (1, 2) by rotating and tightening the threaded parts, bolts and nuts. Therefore, the tightening operation of the bolts and nuts is repeated, which causes a problem that some operability and construction performance need to be sacrificed.

[0006] Furthermore, if the connecting steel bars (ET1, ET2) cannot be located on the same central axis due to manufacturing errors or construction errors in the prefabricated components (PC1, PC2), the female coupling (2) cannot be inserted and fastened to the male coupling (1). Furthermore, since the couplings (1, 2) are very expensive, there are limitations in ensuring economic efficiency.

[0007] Figure 1b An example diagram of connection construction using an enlarged head (20) of an existing concrete component is shown.

[0008] The concrete parts may be made of prefabricated parts, but may also be constructed by pouring and curing cast-in-situ concrete using a mould.

[0009] For this purpose, it is known that before pouring concrete in the on-site pouring process for two adjacent concrete components, the connecting steel bars (10) are arranged in an X shape, and the on-site pouring process is performed to connect the concrete components to each other.

[0010] At this time, it can be known that at the separated end (20) of the connecting steel bar (10), the enlarged head (21) is formed in a manner of surrounding the end, and the anchoring performance of the end of the connecting steel bar (10) can be increased.

[0011] That is, it can be seen that when the connecting steel bar (10) is used as a special-shaped steel bar, in order to increase the contact area with the concrete and increase the friction force, the ring-shaped enlarged head (20) can be pre-integrated with the end (20) of the connecting steel bar (10).

[0012] Figure 1c This figure shows an example of a tension member anchoring device in which a tension member is provided on an existing concrete member (truss, etc.) and anchored to the concrete member.

[0013] The tension member used to introduce prestress into concrete components is usually made of PC steel strands, and after being tensioned, the prestress is introduced by the reaction force based on the anchor.

[0014] For this purpose, the anchoring device (30) is used to anchor the tension member after the concrete part is tensioned.

[0015] The anchoring device (30) is composed of an anchoring plate (31) and an anchor head (32) as a basic structure.

[0016] After being tensioned, the tension member (33) provided so as to penetrate the anchor plate (31) is anchored by a wedge (not shown) inserted into the through hole of the anchor head (32).

[0017] At this time, a plurality of tension members (33) are usually provided, and when the tension is arranged in a later manner, they are arranged inside the sheath (34).

[0018] During this anchoring process, considerable local stress is concentrated in the concrete member (35) contacted by the anchor plate (31), and therefore, it can be seen that the reinforcing steel bar (36) and the anchor head (37) are integrated inside the concrete member.

[0019] Therefore, it is known that in order to connect the existing precast concrete parts (precast parts) to each other, after the connecting steel bars are simply directly connected by a coupling, a finishing method is used to achieve the finishing by finishing grouting, and in order to ensure the anchoring performance of the connecting steel bars, a plurality of enlarged heads are separated and formed on the connecting steel bars,

[0020] When prestress based on the tension member is introduced, it can be seen that in order to reinforce the local stress based on the introduced prestress, the reinforcing steel bar (36) can be formed into a spiral shape, but this reinforcing steel bar (36) can only be used as a concrete reinforcement mechanism based on the introduced prestress. Summary of the invention

[0021] Technical issues

[0022] To this end, the technical problem of the present invention is to provide a non-contact coupling and a prefabricated structure made using the same, instead of using direct contact connecting steel bars to achieve mechanical connection like the existing coupling, in order to connect the prefabricated structure in the space exposed to the outside (the sealed space (S)). This coupling can connect the connecting steel bars to each other in a non-contact manner and can fully ensure the anchoring performance required for the connection.

[0023] Furthermore, the technical problem of the present invention is to provide a non-contact coupling and a prefabricated structure made using the same, which can increase the surrounding restraint force of the connecting steel bars in the process of connecting the connecting steel bars to each other in a non-contact manner, thereby effectively resisting shear force and separation force at the connection joint surface, ensuring operability and constructability, and realizing rapid and economical connection operations of prefabricated structures.

[0024] Solutions to the problem

[0025] The non-contact coupling of the present invention for achieving the above-mentioned problem comprises: connecting steel bars, which are respectively led out from the connected blocking spaces (S) of adjacent prefabricated structures; and a plurality of non-contact ring connecting components, which are adjacently spaced around the mutually separated connecting steel bars and are arranged in a manner of surrounding the connecting steel bars on one side and filling the blocking spaces (S) on the other side. By means of the friction force generated after the finishing mortar filled in the blocking spaces (S) is buried in the non-contact ring connecting components, the adjacent connecting steel bars are connected without a coupling.

[0026] Furthermore, the prefabricated structure made using a non-contact coupling of the present invention includes a plurality of non-contact ring connecting components in the prefabricated structure made using a non-contact coupling and having connecting steel bars respectively led out from adjacent connected sealing spaces (S). The plurality of non-contact ring connecting components are adjacently spaced around the connecting steel bars separated from each other and are arranged in a manner of surrounding the connecting steel bars on one side and filling the sealing space (S) on the other side. By means of the friction force generated after the finishing mortar filled in the sealing space (S) is buried in the non-contact ring connecting components, the adjacent connecting steel bars are connected without a coupling.

[0027] The construction method of a prefabricated structure made by using a non-contact coupling of the present invention comprises: (a) a step of making adjacent prefabricated structures having connecting steel bars respectively led out from a blocking space (S) so that the blocking spaces (S) are interconnected, thereby making the connecting steel bars separated from each other and adjacent to each other; (b) a step of isolating around the mutually separated connecting steel bars, and arranging a plurality of non-contact ring connecting components in a manner of surrounding the connecting steel bars on one side and filling the blocking space (S) on the other side, and setting them using a rib connector, wherein the rib connector comprises two horizontal channel main bodies having a plurality of coupling grooves formed in a manner of being able to be inserted into the left and right sides of the non-contact ring connecting components arranged around the two connecting steel bars, and is set by penetrating the adjacent and connected blocking spaces (S).

[0028] Effects of the Invention

[0029] According to the present invention, the connecting steel bars exposed to the outside are not brought into direct contact with each other, and the connecting steel bars are not connected by overlapping each other with the help of a tightening force. Instead, the friction force is effectively utilized by the finishing grouting filled in the sealing space around the connecting steel bars. However, by utilizing the steel bar heads pre-formed on the connecting steel bars, the operability and constructability of the connection operation for connecting the connecting steel bars can be effectively ensured.

[0030] Furthermore, the reinforcing bar head may be pre-integrated with the connecting reinforcing bars, or may be provided on site, and may be configured to achieve optimization for ensuring friction force and anchoring force, thereby maximizing the connection performance of the prefabricated structure.

[0031] Furthermore, according to the present invention, on the basis of the steel bar head, a non-contact ring connecting component and a steel bar connector are also provided around the connected steel bars, so that not only the finishing grouting solidified around the connected steel bars can be constrained, but also reinforcement can be performed, and a simple setting operation can be performed, thereby providing a non-contact coupling that can realize the rapid and economical connection of prefabricated structures and a prefabricated structure made using the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1a This is an example diagram of the construction of couplings for existing prefabricated components.

[0033] Figure 1b This is an example of a connection construction using the enlarged head of an existing concrete part.

[0034] Figure 1c This is an example diagram of an anchoring device for a tension member that is installed in an existing concrete component and anchored to the concrete component.

[0035] Figure 2a is an example diagram of the non-contact coupling of the present invention,

[0036] Figure 2b This is an example diagram of the rib connector of the present invention.

[0037] Figure 3a and Figure 3b This is an example diagram of a steel bar head of the present invention.

[0038] Figure 4 This is an example diagram of a prefabricated structure made using a non-contact coupling according to the present invention.

[0039] Figure 5a , Figure 5b and Figure 5c A diagram showing an example of manufacturing a prefabricated structure using a non-contact coupling according to the present invention. DETAILED DESCRIPTION

[0040] It comprises connecting steel bars respectively led out from the connected blocking spaces (S) of adjacent prefabricated structures; and a plurality of non-contact ring connecting components which are adjacently arranged around the separated connecting steel bars, surround the connecting steel bars in an interval manner, and are configured to fill the blocking spaces (S); the non-contact coupling is the best form in which the friction force generated by burying the non-contact ring connecting components in the finishing grouting filled in the blocking spaces (S) enables the adjacent connecting steel bars to be connected to each other without using a coupling. Specific embodiments

[0042] The present invention is described in detail below with reference to the accompanying drawings so that a person skilled in the art can easily implement the present invention. However, the present invention is not limited to the embodiments described herein and can be embodied in a variety of different forms. In addition, in order to accurately describe the present invention, parts of the drawings that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the present specification.

[0043] Throughout the specification, when it is stated that a certain part “includes” a certain structural element, unless there is any special description to the contrary, it means that other structural elements may also be included and other structural elements are not excluded.

[0044] Non-contact coupling (100) of the present invention

[0045] Figure 2a is an exemplary diagram of the non-contact coupling (100) of the present invention, Figure 2b is an example diagram of a rib connector (130) of the present invention, Figure 3a and Figure 3b This is an example diagram of a reinforcing steel bar head (110) according to the present invention.

[0046] Reference Figure 2a and Figure 2bSince the non-contact coupling (100) does not directly contact the connecting steel bars (210) of the prefabricated structure (200), but a non-contact ring connecting component (120) and a steel bar connector (130) are provided in the blocking space (S) around the connecting steel bars (210) to connect them to each other in a structural manner, there is no need to mechanically connect the connecting steel bars (210) themselves using couplings, etc., and therefore, the term non-contact is used.

[0047] If the connecting steel bars (210) are connected in this non-contact manner, it is possible to absorb the manufacturing error and construction error of the prefabricated structure (200) because the connecting steel bars (210) are not directly connected to each other, thereby ensuring the constructability and operability.

[0048] At this time, the prefabricated structure (200) made in advance in a factory or the like can be transported to the site and then structurally connected using the non-contact coupling (100) of the present invention, and can be applied to various prefabricated structures (200) such as culverts and tunnels.

[0049] For this reason, Figure 2a and Figure 2b As shown, the non-contact coupling (100) connects the connecting steel bars (210) of the prefabricated structure (200) to each other in a non-contact manner, and comprises a steel bar head (110), a non-contact ring connecting component (120), a steel bar connector (130), and a finishing grout (140).

[0050] Firstly, the prefabricated structure (200) is a reinforced concrete component prefabricated in a factory using a mold, and can also be provided with a tension member (not shown) for introducing prestress.

[0051] For example, it can be called a modular component that can be used to prefabricate various reinforced concrete structures such as culverts, underground and ground tunnels, and connect them to each other for construction.

[0052] At this time, in order to carry out production, transportation and construction, the prefabricated structure (200) can only be made into a specified size.

[0053] And in the field, in order to connect them to each other, refer to Figure 1a The connecting steel bars (CR1, CR2) drawn out from the blocking space (S) are usually connected by couplings (1, 2), and the blocking space (S) is finished with grout, so that the prefabricated components (PC1, PC2) are connected to each other.

[0054] However, in the case of structural couplings, the price is high, and when the center axes of adjacent connecting steel bars (CR1, CR2) drawn out from the sealing space (S) are inconsistent with each other, there is a situation where they cannot be tightened. Therefore, the construction and manufacturing errors of the prefabricated components (PC1, PC2) can only be affected.

[0055] Furthermore, it is necessary to constantly introduce a torque for tightening the couplings (1, 2), but this makes quality management difficult due to restrictions on on-site conditions.

[0056] For this reason, Figure 2a As shown, the present invention does not use the existing couplings (1, 2) that require direct fastening of adjacent connecting steel bars (210).

[0057] Instead, a non-contact ring connection component (120) is arranged around the connecting steel bar (210) to surround it, and the non-contact ring connection component (120) is also embedded through the finishing grout (140), thereby compensating for the integration of the connecting steel bar (210) through the anchoring force caused by the friction force of the finishing grout (140).

[0058] Furthermore, the position of the non-contact ring connection component (120) does not change due to the finishing grout (140) filled in the sealing portion space (S), and the rib connector (130) is provided to facilitate the installation.

[0059] The rib connector (130) is arranged to penetrate the sealing portion space (S), thereby ensuring the connection performance in the connection joint surface of the prefabricated structure (200).

[0060] Furthermore, a steel bar head (110) is formed on the connecting steel bar (210), and a finishing grout (140) is filled in the sealing portion space (S) to bury the steel bar head (110), thereby connecting the connecting steel bars (210) to each other through an anchoring force caused by friction.

[0061] For this reason, Figure 2a As shown, the reinforcing bar head (110) is formed in an enlarged head shape in a manner of contacting two connecting reinforcing bars (210) of the prefabricated structure (200).

[0062] It can be seen that this kind of steel bar head (110) can be formed into a cylindrical block shape that contacts the connecting steel bar (210) while providing anchoring performance, and a plurality of them are formed on the connecting steel bar (210) at intervals.

[0063] Reference Figure 3a and Figure 3b This reinforcing bar head (110) is described below.

[0064] like Figure 3a As shown, the steel bar head (110) is welded to the connecting steel bar (210). Figure 3b As shown, it is also mechanically arranged on the connecting steel bars (210), thereby fully ensuring operability and construction performance.

[0065] At this time, in the welded steel bar head (110), the welded type means that the enlarged joint body (111) is fixed to the connecting steel bar (210) by welding. Figure 3a As shown, it includes an enlarged joint body part (111), an end fixing device (112), and an enlarged joint part (113).

[0066] For this reason, Figure 3a As shown, the enlarged joint body part (111) can be divided into, for example, two parts, which are arranged in a manner of surrounding the outer peripheral surface of the connecting steel bar (210) for contact, and this is simply combined and assembled by an operator on the outer peripheral surface of the connecting steel bar (210) extending from the prefabricated structure (200), including the enlarged body part (111a), the end fixing part (111b), and the enlarged joint connecting part (111c).

[0067] First, if Figure 3a As shown, the enlarged main body (111a) is divided into at least two parts and is arranged in a manner that can surround the outer peripheral surface of the connecting steel bar (210) and make contact therewith.

[0068] At this time, an inner groove (111d) for accommodating the joints and ribs of the connecting steel bar (210) is formed on the inner side surface of the portion where the enlarged main body (111a) and the connecting steel bar (210) are in contact. Therefore, the operator can simply set the enlarged main body (111a) at any position and can set the required number. Moreover, by welding, the inner groove (111d) is filled with molten metal, so that a reliable fixed setting can be achieved.

[0069] Then, if Figure 3a As shown, the end fixing portion (111b) can be integrally formed into a ring shape at both side ends of the enlarged main body portion (111a), thereby ensuring operability, and the end fixing device (112) described later is in contact with the outer peripheral surface.

[0070] The end fixing device (112) enables the divided enlarged main body parts (111a) to maintain a temporarily combined state, and can be removed after the enlarged main body parts (111a) are fixedly arranged by welding.

[0071] That is, the welding type steel bar head (110) of the present invention can realize reliable fixing by welding (arc welding, etc.) the enlarged main body (111a) to the connection surface of the enlarged main body (111a) divided in the connecting steel bar (210), so that the molten metal (which may vary depending on the material of the welding rod, etc.) fills the inner groove (111d).

[0072] At this time, in order to fill the inner groove (111d) with molten metal, a welding hole can be formed in the enlarged joint body (111) to expose the inner groove (111d), or a method of filling the groove by welding can be used to utilize the gap between the two ends of the enlarged joint body (111) and the connecting steel bar (210).

[0073] Then, if Figure 3a As shown, the enlarged joint connection part (111c) is a fastening part formed on the outer peripheral surface between the end fixing parts (111b) on both sides of the enlarged main body part (111a), and plays a role in setting the enlarged joint part (113) in a detachable manner.

[0074] This enlarged joint connection part (111c) can be used as a fastening part to continuously form a recessed part and a protruding part at the part in contact with concrete to ensure basic adhesion. However, by further providing the enlarged joint part (113) described later on this enlarged joint connection part (111c), the adhesion area can be expanded, the adhesion can be improved, and the finger pressure performance can be adjusted based on the direction.

[0075] Then, if Figure 3a As shown, the end fixing device (112) is a device for fixing the enlarged main body (111a) by welding to the connecting steel bar (210) when the enlarged main body (111a) of the enlarged joint main body (111) is provided, and can be formed into a ring shape having an inner side surface corresponding to the outer peripheral surface of the end fixing part (111b).

[0076] To this end, an end fixing device (112) is arranged in a contact manner in the end fixing portion (111b), thereby maintaining the divided enlarged main body portion (111a) in a combined state, and the enlarged main body portion (111a) is fixed to the connecting steel bar (210) by welding.

[0077] Preferably, two such end fixing devices (112) are provided at both side ends of the enlarged joint body (111), and although not shown, even if they are only provided at one side end of the enlarged joint body (111), it does not affect the adhesion.

[0078] Furthermore, as for the end fixing device (112), after the connecting steel bar (210) is pre-pierced, the enlarged main body (111a) is welded to the connecting steel bar (210) by welding (arc welding, etc.) and fixedly installed, and then it can be separated from the end fixing part (111b) and can be formed into a ring shape using insulating material (ceramic, etc.).

[0079] Then, if Figure 3a As shown, the enlarged joint portion (113) further ensures adhesion with the finishing grout (140) provided on the steel bar head (110) for connecting the steel bars (210), and can adjust the finger pressure performance based on the direction.

[0080] That is, the outer peripheral surface of the enlarged main body (111a) of the enlarged joint main body (111) is formed with an enlarged joint connecting part (111c) as a threaded fastening part, so that the adhesion with the finishing grout (140) can be basically ensured by means of the recessed part and the protruding part.

[0081] However, in order to expand the adhesion area and further ensure the adhesion force, an enlarged joint part (113) is further provided in the enlarged joint connection part (111c) in a manner that allows for attachment and detachment.

[0082] That is, it is configured to have a ring shape with a threaded portion formed on the inner side surface fastened to the enlarged joint connection portion (111c) and capable of being assembled and disassembled, and the enlarged joint main body portion (111) is configured to be orthogonal to the connecting steel bar (210), thereby ensuring finger pressure performance.

[0083] Then, refer to Figure 3b Compared with the welded steel bar head (110), the mechanical steel bar head (110) is the same in that it includes an enlarged joint body (111), an end fixing device (112), and an enlarged joint part (113), but here, the meaning of mechanical is that the enlarged joint body (111) is fixed to the connecting steel bar (210) by means of crimping through the rotation and tightening of the end fixing device (112).

[0084] For this reason, Figure 3b As shown, the enlarged joint body part (111) is also divided (split) into two parts, and is formed in a manner of surrounding the outer peripheral surface of the connecting steel bar (210). This is assembled and set by an operator by simply merging the outer peripheral surface of the connecting steel bar (210) extending from the prefabricated structure (200). It is the same as the welding type in terms of including the enlarged body part (111a), the end fixing part (111b), and the enlarged joint connecting part (111c).

[0085] For this reason, Figure 3bAs shown, the enlarged main body (111a) is also divided into at least two parts and formed in a manner capable of surrounding the connecting steel bar (210). Therefore, the configuration in a manner capable of surrounding the outer peripheral surface of the connecting steel bar (210) is the same.

[0086] At this time, compared with the welded steel bar head (110), the contact area between the main body (111a) and the connecting steel bar (210) is enlarged so that the joint of the connecting steel bar (210) and the bar are in direct contact without the need to form an additional inner groove (111d). There is a difference in this aspect.

[0087] For this reason, it can be known that the enlarged main body (111a) is a material that can be crimped, is in direct contact with the ribs and joints of the connecting steel bar (210), and is finally crimped with the help of the end fixing device (112), thereby, the operator can simply set the enlarged main body (111a) at any position, and can set the required number of the same.

[0088] like Figure 3b As shown, the end fixing part (111b) is formed as one piece at both side ends of the enlarged main body part (111a), and a threaded part is formed on the upper surface, so that the end fixing device (112) is not only in simple contact,

[0089] Instead, the integration is achieved by threaded fastening in the threaded portion, and the end fixing device (112) presses the end fixing portion (111b) with the outer peripheral surface of the connecting steel bar (210), thereby achieving the function of integrating the enlarged main body portion (111a) with the connecting steel bar (210). In this respect, it is different from the welded steel bar head (110) seen above.

[0090] like Figure 3b As shown, the enlarged joint connection part (111c) is also a fastening part formed on the outer peripheral surface between the end fixing parts (111b) on both sides of the enlarged main body part (111a), and plays the same role in setting the enlarged joint part (113) in a detachable manner.

[0091] Furthermore, the mechanical steel bar head (110) of the present invention can also play the role of expanding the joint portion (113) and the end fixing portion (111b) together with the expanded joint connection portion (111c) to further mechanically crimp and expand the main body portion (111a) in the connecting steel bar (210). In this respect, it is different from the welded steel bar head (110) seen above.

[0092] This enlarged joint connection part (111c) can be used as a fastening part to continuously form a recessed part and a protruding part at the part in contact with concrete to ensure basic adhesion. However, by further providing an enlarged joint part (113) on this enlarged joint connection part (111c), the adhesion area can be expanded, the adhesion can be improved, and the finger pressure performance can be adjusted based on the direction. In this respect, they are the same.

[0093] Then, if Figure 3b As shown, the end fixing device (112) is a device for fixing the enlarged main body (111a) to the connecting steel bar (210) when the enlarged main body (111a) is provided with the enlarged joint main body (111). It can be formed into a ring shape having an inner side surface corresponding to the bent portion of the end fixing portion (111b), and is the same in this respect.

[0094] However, there is a difference in that the end fixing device (112) is fastened to the fastening portion of the bent portion formed at the end fixing portion (111b) by threaded fastening, and crimping is achieved as the end fixing device (112) rotates on the connecting steel bar (210), thereby playing the role of fixing the enlarged joint main body (111) on the connecting steel bar (210).

[0095] Preferably, two such end fixing devices (112) are provided at both side ends of the enlarged joint body (111), and although not shown in the figure, even if only one end of the enlarged joint body (111) is provided, the same operation can be performed as long as it does not affect the adhesion.

[0096] Furthermore, preferably, as for the end fixing device (112), it is only necessary to pre-pierce the connecting steel bar (210), set the enlarged joint body (111), and fix the enlarged joint body (111) to the connecting steel bar (210) by crimping, without the need for additional separation and removal.

[0097] like Figure 3b As shown, the enlarged joint portion (113) further ensures the adhesion between the mechanical reinforcement head (110) and the concrete provided on the connecting reinforcement (210), and can adjust the finger pressure performance based on the direction, which is the same in this respect.

[0098] Similarly, the outer peripheral surface of the enlarged main body portion (111a) of the enlarged joint main body portion (111) can be seen above, and the enlarged joint connecting portion (111c) is formed as a threaded fastening portion, so that the adhesion with the finishing grout (140) can be basically ensured by means of the recessed portion and the protruding portion.

[0099] However, in order to expand the adhesion area and further ensure the adhesion force, an enlarged joint part (113) is further provided in the enlarged joint connection part (111c) in a manner that allows for attachment and detachment.

[0100] That is, it is configured to have a ring shape with a threaded portion formed on the inner side surface fastened to the enlarged joint connection part (111c) and can be assembled and disassembled, and the enlarged joint part (113) is configured to be orthogonal to the connecting steel bar (210), thereby ensuring finger pressure performance.

[0101] Then, if Figure 2a and Figure 2b As shown, the non-contact ring connection component (120) is spaced around the connecting steel bar (210) and is arranged in a manner of surrounding the connecting steel bar (210) on one side and filling the sealing portion space (S) on the other side, and is buried in the finishing grout (140).

[0102] The anchoring force caused by the friction force of the finishing grout (140) compensates for the integration of the connecting steel bars (210).

[0103] It can be seen that the non-contact ring connecting component (120) is formed into a circular ring shape. That is, although the adjacent connecting steel bars (210) are separated from each other, a plurality of non-contact ring connecting components (120) can be arranged around the adjacent connecting steel bars (210) at intervals, thereby playing a role in structurally connecting the adjacent connecting steel bars (210) by utilizing the friction force between the finishing grout (140).

[0104] Although shown in the form of a circular ring, it can be formed into various forms as long as it can be arranged in the blocking portion space (S) and can surround the connection steel bar (210).

[0105] As described above, if a plurality of non-contact ring connecting components (120) in the form of circular rings are used, the contact area with the finishing slurry (140) can be increased, and the ready-made product can be directly used. For this purpose, a fuse can be applied to the outer peripheral surface of the circular ring so that a plurality of protrusions can be naturally formed.

[0106] Therefore, if the operator sets the connecting steel bars (210) on one side in a plurality of spaced-apart ways around them and then sets the connecting steel bars (210) on the other side adjacent to them, it is sufficient for the operator to similarly set the plurality of spaced-apart ways, thus providing excellent operability.

[0107] Then, if Figure 2a and Figure 2bAs shown, the rib connector (130) is used to quickly set a plurality of non-contact ring connection components (120) in the form of circular rings at a specified interval in the sealing part space (S), and after setting them by penetrating the adjacent connected sealing part spaces (S), a finishing grout (140) is embedded, and the connection performance in the connection joint surface (D) of the prefabricated structure (200) is ensured by means of friction.

[0108] To this end, according to Figure 2a and Figure 2b A horizontal channel main body (131) having a plurality of engaging grooves (132) can be formed on the left and right sides of a circular ring-shaped non-contact ring connecting component (120) that can be inserted around two connecting steel bars (210).

[0109] To this end, the two horizontal channel main bodies (131) can be separated from each other in the form of horizontal plates, and two connecting steel bars (210) and a plurality of non-contact ring connecting components (120) in the form of circular rings are arranged between them, and are arranged in a manner of crossing the connecting joint surface of the prefabricated structure (200), thereby more effectively resisting the shear force acting on the connecting joint surface of the prefabricated structure.

[0110] As for the engagement groove (132), the two side surfaces of the circular ring-shaped non-contact ring connecting component (120) are inserted between the two horizontal channel main bodies (131) and come into contact with each other, thereby playing the role of fixing the position of the circular ring-shaped non-contact ring connecting component (120).

[0111] To this end, according to FIG. 2c, it can be formed into a semicircular, inclined semicircular, L-shaped retaining piece, trapezoidal, etc., so that the side of the circular ring-shaped non-contact ring connecting component (120) is inserted and clamped.

[0112] To this end, preferably, the connecting steel bar (210) is first surrounded and arranged so that the circular ring-shaped non-contact ring connecting component (120) is connected with the rib connector (130) to achieve integration. Of course, the separated rib connectors (130) can be connected in multiple length directions, and the side connection of the circular ring-shaped non-contact ring connecting component (120) does not necessarily have to be set by two mutually separated arrangements.

[0113] Therefore, the number of settings is not limited, and two can be set on one side and two corresponding ones can be set on the other side, and so on.

[0114] Then, if Figure 2a and Figure 2bAs shown, the finishing grout (140) embeds the reinforcing bar head (110), the non-contact ring connecting component (120), and the reinforcing bar connector (130) formed in the sealed space (S) interconnected by the connecting joint surface (D) of the prefabricated structure (200), thereby completing the finishing and achieving mutual integration.

[0115] For this purpose, non-shrinkage mortar, concrete, etc. can also be used to achieve the integration of anchoring performance and prefabricated structure (200) through friction with the steel bar head (110), non-contact ring connection component (120), and steel bar connector (130).

[0116] Prefabricated structure (200) made by using non-contact coupling (100) of the present invention

[0117] Figure 4 This is an exemplary diagram of a prefabricated structure (200) made using a non-contact coupling (100) according to the present invention.

[0118] As the prefabricated structure (200), Figure 4 An L-shaped retaining wall is illustrated in FIG.

[0119] It can be seen that this L-shaped retaining wall is formed by a base plate (230) and a wall body (240). It can be seen that in this L-shaped retaining wall, a plurality of blocking spaces (S) for connecting the base plate (230) and the wall body (240) continuously and horizontally are separated in the longitudinal direction (the connection direction of the L-shaped retaining wall).

[0120] To this end, connecting steel bars (210) that need to be connected to each other are exposed in the sealed space (S) between the bottom plate (230) and the wall body (240).

[0121] It is necessary to separately set a steel bar head (110) on the connecting steel bar (210) on site, and if such a steel bar head (110) is used, the exposed extension length of the connecting steel bar (210) can be minimized, thereby achieving a more efficient connecting operation of the connecting steel bar (210).

[0122] Thus, after the steel bar heads (110) are respectively provided on the connecting steel bars (210), the non-contact ring connection component (120) is provided at one time using the steel bar connector (130).

[0123] Of course, there is nothing wrong with individual settings, but depending on the site conditions, a one-time setting can achieve quick operation.

[0124] It can be seen that in this non-contact ring connection component (120), the rib connector (130) is set to penetrate the connection joint surface (D).

[0125] To this end, as for the non-contact ring connection component (120), a finishing grout (140) is poured in the sealing portion space (S) and solidified to embed the connecting steel bars (210) provided with the steel bar connector (130), so that the final prefabricated structures A are structurally connected to each other.

[0126] Construction method of a prefabricated structure (200) using a non-contact coupling (100) of the present invention

[0127] Figure 5a , Figure 5b and Figure 5c A construction sequence diagram of a prefabricated structure (200) manufactured using a non-contact coupling (100) according to the present invention is shown.

[0128] To this end, according to Figure 5a It can be known that a prefabricated structure (200) having a steel bar head (110) provided with a non-contact coupling (100) on the connecting steel bar (210) is manufactured in advance in a factory, etc., and transported to the site for construction that allows them to be joined together so that the connecting surfaces (D) are in contact.

[0129] The prefabricated structure (200) is manufactured in such a way that a plurality of reinforced concrete parts are connected to each other to achieve integration, thus forming a final culvert, etc., and a box-shaped sealing portion space (S) is pre-formed so that the connecting steel bars (210) are structurally connected and integrated.

[0130] To this end, according to Figure 5a , the blocking spaces (S) of adjacent prefabricated structures (200) are connected to each other, and the connecting steel bars (210) are connected to each other on the same axis using existing couplings. However, problems may arise if the connections are inconsistent due to construction errors or manufacturing errors.

[0131] The present invention can non-contactly set a steel bar head (110), a non-contact ring connection component (120), and a steel bar connector (130) without using a coupling, and fill a finishing grout (140) to set the connecting steel bars (210) to connect with each other.

[0132] At this time, refer to Figure 5a It can be seen that the connecting steel bar (210) is led out from the sealed space (S) of the two prefabricated structures (200), and it can be seen that a steel bar head (110) is integrally formed on the outer peripheral surface of the connecting steel bar (210).

[0133] like Figure 3a and Figure 3bAs shown, as such a reinforcing bar head 110, a welded or mechanical reinforcing bar head (110) can be used, and it can include an enlarged joint body portion (111), an end fixing device (112), and an enlarged joint portion (113).

[0134] Then, according to Figure 5b Around adjacent connecting steel bars (210), the non-contact ring connecting component (120) is arranged around the connecting steel bars (210) in a spaced and surrounding manner using a steel bar connector (130).

[0135] Since the non-contact ring connection component (120) is formed in a circular ring shape, it can be set in the connection steel bar (210) in an inserted manner, so that the operability is very good, and it can be initially set in a plurality in a mutually spaced manner.

[0136] The non-contact ring connection component (120) can be dispersedly arranged in the entire connected sealing space (S) and embedded in the finishing grout (140), thereby compensating for the integration of the connecting steel bars (210) through the anchoring force caused by the friction force of the finishing grout (140).

[0137] At this time, as described above, the two horizontal channel main bodies (131) of the rib connector (130) can be separated from each other in the form of horizontal plates, and two connecting steel bars (210) and a plurality of circular ring-shaped non-contact ring connecting components (120) are arranged between them, and are arranged in a manner of crossing the connecting joint surface of the prefabricated structure (200), so as to more effectively resist the shear force acting on the connecting joint surface of the prefabricated structure. The connecting groove (132) allows the two side surfaces of the circular ring-shaped non-contact ring connecting component (120) to be inserted between the two horizontal channel main bodies (131), so as to play a role in fixing the position of the non-contact ring connecting component (120).

[0138] Then, if Figure 5c The sealing space (S) is filled with a finishing grout (140) to perform the final finishing, so that the connecting steel bars (210) connected to each other by means of the steel bar connector (130) and the non-contact ring connecting component (120) are buried.

[0139] The finishing grout (140) of non-shrinkage mortar, concrete or the like is filled so that the steel bar head (110), the non-contact ring connection component (120) and the rib connector (130) formed in the sealed space (S) interconnected with each other at the connection joint surface (D) of the prefabricated structure (200) are buried, and when finally cured, the anchoring performance and the integration of the prefabricated structure (200) with the steel bar head (110), the non-contact ring connection component (120) and the rib connector (130) can be achieved through friction.

[0140] The above description of the present invention is for illustration only. As long as one is a person of ordinary skill in the technical field to which the present invention belongs, it can be understood that it can be easily transformed into other different specific forms without changing the technical ideas or essential features of the present invention. Therefore, it should be understood that the embodiments described above are illustrative in all aspects and are not limiting. For example, each structural element described in a single form can be implemented in a dispersed manner, and similarly, the structural elements described in a dispersed manner can also be implemented in a combined form.

[0141] It should be explained that, compared with the above detailed description, the scope of the present invention should be expressed by the claims, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent technical solutions are included in the scope of the present invention.

Claims

1. A non-contact coupling, characterized in that: include: Connecting steel bars are respectively led out from the connected blocking space (S) of adjacent prefabricated structures; and A plurality of non-contact ring connection components are adjacently spaced around mutually separated connection steel bars and arranged in a manner of surrounding the connection steel bars while filling the sealing portion space (S). Adjacent connecting reinforcing bars are connected without a coupling by means of friction force generated after the finishing grout filled in the sealing portion space (S) is embedded in the non-contact ring connecting member.

2. The non-contact coupling according to claim 1, characterized in that: The non-contact ring connection component (120) comprises a circular ring, and a plurality of the circular rings are arranged at intervals around the connection steel bar (210), and a protrusion is formed to increase the contact area with the finishing grout (140).

3. The non-contact coupling according to claim 1, characterized in that: It also includes a rib connector (130), which includes two horizontal channel main parts (131) formed with a plurality of engagement grooves (132) in a manner of being inserted into the left and right side surfaces of a non-contact ring connection component (120) arranged around two connecting steel bars (210). After being arranged by penetrating adjacent connected blocking space (S), the rib connector (130) is embedded in the finishing grout (140) to ensure the connection performance in the connection joint surface of the prefabricated structure (200) by means of friction.

4. The non-contact coupling according to claim 1, characterized in that: The connecting steel bar (210) is also provided with a steel bar head (110), so that a non-contact ring connecting component (120) is arranged around the connecting steel bar (210) provided with the steel bar head (110), and adjacent connecting steel bars (210) are connected without a coupling by means of the friction force generated after the finishing grout (140) filled in the sealing portion space (S) is buried in the steel bar head (110).

5. The non-contact coupling according to claim 4, characterized in that: The steel bar head (110) comprises: An enlarged main body (111a) is divided and arranged in a manner to surround the outer peripheral surface of the connecting steel bar (210); The end fixing portion (111b) is integrally formed in a ring shape at both side ends of the enlarged main body portion (111a), and the upper surface is in contact with the end fixing device (112); and The enlarged joint connection part (111c) is a fastening part formed on the outer peripheral surface between the end fixing parts (111b) on both sides of the enlarged main body part (111a), and is formed with an enlarged joint part (113) in a detachable manner.

6. The non-contact coupling according to claim 5, characterized in that: An inner groove (111d) for accommodating the joint and ribs of the connecting steel bar (210) is formed on the inner side surface of the enlarged main body (111a) at the contact portion between the enlarged main body (111a) and the connecting steel bar (210), and the inner groove (111d) is filled with molten metal by welding. Thus, the enlarged main body (111a) is fixed to the connecting steel bar (210) by welding, so that the steel bar head (110) is attached to the connecting steel bar (210) by welding.

7. The non-contact coupling according to claim 6, characterized in that: The enlarged joint connection part (111c) serves as a fastening part, and a concave part and a convex part are continuously formed at the part in contact with the finishing slurry (140), so as not only to ensure adhesion, but also to set an enlarged joint part (113) at the enlarged joint connection part (111c) serving as the fastening part to expand the adhesion area, improve adhesion, and adjust the finger pressure performance based on the direction.

8. The non-contact coupling according to claim 7, characterized in that: The enlarged joint part (113) is configured to be a ring having a threaded portion formed on the inner side surface fastened to the enlarged joint connecting part (111c) and is assembled and disassembled. The enlarged joint main body (111) is configured to be orthogonal to the connecting steel bar (210), thereby ensuring finger pressure performance.

9. The non-contact coupling according to claim 7, characterized in that: The end fixing device (112) is fixed to the connecting steel bar (210) by crimping, and the end fixing device (112) is fastened to the fastening portion formed on the end fixing portion (111b) by threaded fastening. As the end fixing device (112) rotates on the connecting steel bar (210), the enlarged joint body (111) is crimped and fixed to the connecting steel bar (210), so that the steel bar head (110) is attached to the connecting steel bar (210) by crimping.

10. The non-contact coupling according to claim 9, characterized in that: On the inner side of the enlarged main body (111a), the enlarged main body (111a) and the connecting steel bar (210) are in direct contact with the joint and the rib of the connecting steel bar (210), and the enlarged main body (111a) is a material that can be crimped and crimped to the final connecting steel bar (210). The enlarged joint connection part (111c) serves as a fastening part, and a concave part and a convex part are continuously formed at the part in contact with the finishing slurry (140), so as not only to ensure adhesion, but also to set an enlarged joint part (113) at the enlarged joint connection part (111c) serving as the fastening part to expand the adhesion area, improve adhesion, and adjust the finger pressure performance based on the direction.

11. A prefabricated structure made by using a non-contact coupling, having connecting steel bars respectively drawn out from adjacent communicating blocking space (S), characterized in that: The invention comprises a plurality of non-contact ring connecting parts, wherein the plurality of non-contact ring connecting parts are adjacently spaced around the mutually separated connecting steel bars and arranged in a manner of surrounding the connecting steel bars while filling the sealing portion space (S). Adjacent connecting reinforcing bars are connected without a coupling by means of friction force generated after the finishing grout filled in the sealing portion space (S) is embedded in the non-contact ring connecting member.

12. The prefabricated structure made using a non-contact coupling according to claim 11, characterized in that: The connecting steel bar (210) is also provided with a steel bar head (110), so that a non-contact ring connecting component (120) is arranged around the connecting steel bar (210) provided with the steel bar head (110), and adjacent connecting steel bars (210) are connected without a coupling by means of the friction force generated after the finishing grout (140) filled in the sealing portion space (S) is buried in the steel bar head (110).

13. A construction method for a prefabricated structure made using a non-contact coupling, characterized in that: include: (a) step, adjacent prefabricated structures formed with connecting steel bars respectively drawn out from the blocking space (S), so that the blocking spaces (S) are interconnected, thereby separating the connecting steel bars from each other and adjacent; (b) step, separating the connected steel bars from each other and arranging a plurality of non-contact ring connecting parts so as to surround the connected steel bars on one side and fill the sealing part space (S) on the other side, and setting them using a rib connector, wherein the rib connector includes two horizontal channel main parts that form a plurality of engaging grooves in a manner of being inserted into the left and right sides of the non-contact ring connecting parts set around the two connected steel bars, and is set by penetrating adjacent connected sealing part spaces (S).

14. The construction method of a prefabricated structure made by using a non-contact coupling according to claim 13, characterized in that: The method further comprises step (c) after step (b), In the step (c), adjacent connecting steel bars (210) are connected without a coupling by means of the friction force generated after the finishing grout (140) filled in the sealing portion space (S) is embedded in the non-contact ring connecting component (120) and the steel bar connector (130).

15. The construction method of a prefabricated structure made by using a non-contact coupling according to claim 13, characterized in that: The connecting steel bar (210) in step (a) is further provided with a steel bar head (110), so that a non-contact ring connecting component (120) is arranged around the connecting steel bar (210) provided with the steel bar head (110), and adjacent connecting steel bars (210) are connected without a coupling by means of the friction force generated after the finishing grout (140) filled in the blocking portion space (S) is buried in the steel bar head (110), and the steel bar head (110) comprises: an enlarged main body (111 a), which is divided and arranged in a manner of surrounding the outer peripheral surface of the connecting steel bar (210); an end fixing portion (111b), which is integrally formed in a ring shape at the two side ends of the enlarged main body portion (111a), and the upper surface is in contact with the end fixing device (112); and an enlarged joint connecting portion (111c), which is a fastening portion formed on the outer peripheral surface between the end fixing portions (111b) on both sides of the enlarged main body portion (111a), and is formed with an enlarged joint portion (113) in a manner of being assembled and disassembled.

16. The construction method of a prefabricated structure made by using a non-contact coupling according to claim 13, characterized in that: The prefabricated structure (200) of step (a) is a reinforced concrete component pre-made using a mold, including a culvert, an underground tunnel and a ground tunnel. Even if the separated connecting steel bars (210) are not located on the same central axis, they are connected without a coupling due to the non-contact coupling (100).

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