JP2006188826A - Concrete member connecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To generate bonding force based on pressure contact at connected parts by connecting concrete members and to resist external force when external force of separating the connected parts works. <P>SOLUTION: A device for connecting the concrete members in a predetermined position has recesses 13, 14 at the connected parts of the concrete members 11, 12. The recesses 13, 14 are formed tapered toward the inside of the concrete members 11, 12 and have guide slant faces 18, 19 that can guide the concrete members 11, 12 for connection. The device also has a connector 15 having shape and hollow structure fitted to the recesses 13, 14 which are the connected parts of the concrete members 11, 12. The connector 15 is deformed when pressed into the recesses by the approach or contact of the concrete members 11, 12, and has outward or inward protruding parts 23, 24 brought into pressure contact with the internal wall surfaces of the recesses 13, 14 or with shaft bodies 25, 26 arranged in the connector. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to an apparatus for joining concrete members at a predetermined position.

When constructing a structure with a block-shaped concrete product, it is necessary to connect or connect the concrete blocks of the building element by some means or method. As one technique for that purpose, there is known a method of connecting upper and lower concrete members using members commonly called a couple joint or a connecting pin. However, the method is to fit the member on the overlapping surface of the concrete members stacked one above the other, which is substantially equivalent to the prevention of displacement in the horizontal plane. In addition, when a force was applied in the vertical direction, the concrete member almost separated without resistance, and the bonding force did not work. For this reason, in the case of the connection of the concrete members laid out on the left and right, the conventional one that cannot expect a bonding force is not effective.

JP-A-11-81207

  The present invention has been made paying attention to the above points, and the problem is that when a concrete member is coupled, a coupling force based on pressure contact is generated at the coupling point, and when an external force is applied to the coupling site, It is to be able to counter external forces. Another object of the present invention is to generate a binding force based on a necessary pressure contact at a joint portion not only in the stacking of the concrete members in the vertical direction but also in the concrete members arranged in the horizontal direction.

  In order to solve the above-described problems, the present invention relates to an apparatus for bonding a concrete member at a predetermined position. The apparatus has a recess at a connecting portion of the concrete member, and the recess is formed from the connecting portion to the concrete member. It is formed in a tapered shape inward, has a guide slope that can guide a concrete member for joining, and also has a shape and hollow structure that fits into a recess that is a joint location of the concrete member A shaft that has a coupler and is deformed by being pressed in the concave portion due to the approach or contact of a concrete member, and is brought into pressure contact with the inner wall surface of the concave portion or disposed inside the coupler. It has a configuration in which it has outward or inward projections that are in pressure contact with the body.

  The concrete member joining apparatus according to the present invention is an apparatus used for joining a concrete member to a predetermined position, and is also applied to a case where one concrete member is installed on a base, for example. In addition, when connecting concrete members to each other, it is called a connection and distinguished. However, this is a kind of connection only by changing the way of calling. It is the same as a connecting device for members.

  The concrete member coupling device according to the present invention includes a concave portion prepared at a joint location of the concrete member, and a coupler having a shape and a structure that fits into the concave portion. In other words, the coupling tool enters the concave portion to generate a pressure contact force, and the concave portion is tapered from the coupling portion toward the inside of the concrete member, and the tapered portion forms a guide slope. And can guide the coupler.

The coupler for this has a shape that fits into the recess, and has a hollow structure, and the shaft is disposed in the hollow structure. The coupler is deformed by being pressed in the recess by the approach or contact of the concrete member, and this deformation is directed outward or inward of the coupler. That is, the protrusions that come into pressure contact with the inner wall surface of the recess by deformation are outward projections, and the protrusions that come into pressure contact with the shaft in the coupler are inward protrusions. Whether outward or inward, the protrusion functions as an easily deformable portion that is deformed first when a pressure is applied to the coupler, and is provided to increase or decrease the outer diameter or inner diameter. . Such a protrusion of the hollow structure is preferably formed by a bulge method.

  What is required as a specific structure of the coupler is a hollow structure and a projecting portion that is easily deformed outward or inward, and a tapered end that facilitates guiding to a concave portion formed in a tapered shape. Part. A typical form is one in which both ends are tapered, and at least two protrusions are provided in a ring shape around the middle part of the drum, such as a drum type or a rugby ball type. This form is illustrated in Example 1 or Example 2 of FIG. 1 or FIG. In this way, those having a symmetrical shape such as a drum type or a rugby type are for fitting the tapered portions at both ends into the concave portions of the adjacent concrete members, respectively. And can be connected at a predetermined position.

A reinforcing member that constitutes the inner wall surface of the recess can be provided at the joint portion of the concrete member. If the concave part remains as concrete, the concrete skin is scraped by the bonding force based on the pressure welding, and it is difficult to transmit the bonding force based on the pressure welding, and the expected coupling force may not be expected. Is a measure taken to prevent It is desirable that the reinforcing member is formed so as to be integrated with the concrete member after the concrete is placed by placing the concrete member as an insert member when molding the concrete member.

  When a concrete member is coupled or coupled using such a concrete member coupling apparatus, the outward or inward projections are deformed and the concave portions are deformed when the coupler is pressed by the approach or contact of the concrete members. The inner wall surface is brought into pressure contact with each other to form an integrated connection state. The pressing force due to the approach or contact of the concrete member is a force due to the weight of the upper concrete member when the concrete members are stacked up and down. Further, when the concrete members are laid out on the left and right, a fastening force such as a bolt for connecting the concrete members to each other becomes a pressure applied to the coupler.

  The outward or inward protrusion of the coupler is plastically deformed in the recess, the outward protrusion is in pressure contact with the inner wall surface of the recess, and the inward protrusion is in pressure contact with the shaft, respectively. Integrate. For this reason, even if an external force that tries to separate the concrete member in the vertical direction or an external force that tries to separate it in the left-right direction works, the binding force based on the pressure contact can counteract the external force. In both the connection and the lateral connection, the bonding force is maintained with respect to the concrete member.

  Since the present invention is configured and operates as described above, it is possible to exert a bonding force based on the pressure contact at the joining portion by joining the concrete member, and to counter the external force when an external force is applied to the joining portion. The connection can be maintained, and the maintenance of the connection can be expected not only for the concrete members stacked vertically but also for the concrete members arranged side by side.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. 1 and FIG. 2 show Example 1 of an embodiment of the present invention, 10 is a coupling device according to the present invention, and concave portions 13 and 14 provided at coupling positions of upper and lower concrete members 11 and 12, It consists of a coupler 15 having a hollow structure fitted therein. Reinforcing members 16, 17 are integrally provided in the illustrated recesses 13, 14, and outward projections that can be pressed against the inner wall surface are formed around the coupler 15 at predetermined intervals. .

  The reinforcing members 16 and 17 cover the concrete surfaces of the recesses 13 and 14 and are tapered toward the inside of the concrete members 11 and 12 like the recesses 13 and 14, and the concrete members 11 and 12 for bonding. Guide slopes 18 and 19 are provided. The inlet portions of the reinforcing members 16 and 17 reaching the guide slopes 18 and 19 are formed of parallel cylindrical surfaces.

  The coupler 15 has a length larger than the sum of the outer diameter of the reinforcing members 16 and 17 of the adjacent concrete members 11 and 12 and the depth of the reinforcing members 16 and 17, and has a substantially drum shape. is doing. The joint ends 21 and 22 which are tapered at both ends are cylindrical barrels 20 in the middle of them, and outward projections 23 and 24 are bulged at the boundary between the barrel 20 and the joint ends 21 and 22. Is provided by. In the figure, reference numerals 25 and 26 indicate shafts that are reinforcing bars, but are not used in Example 1.

Therefore, at the time of construction, the coupler 15 is fitted inside the reinforcing member 17 of the lower concrete member 12, and the upper concrete member 11 is connected to the reinforcing member 16 as shown by the arrow. Lower to cover the top of 15. At that time, the upper coupling end portion 21 of the coupling tool 15 is guided to the guide slope 18 and is properly fitted to the concave portion 13 side. When the upper concrete member 11 approaches the lower concrete member 12, a coupler having a vertical dimension larger than the sum of the depths on the recesses 13 and 14 side (specifically, the sum of the depths inside the reinforcing members 16 and 17). 15 is pressurized from above and below, the outward projecting portions 23 and 24 are deformed to increase the outer diameter, and the inner wall surfaces of the reinforcing members 16 and 17 are bitten in a press-contact state. Join. FIG. 2 shows a stacked state in which the upper and lower concrete members 11 and 12 are in contact with each other. Even if the upper concrete member 11 is lifted in this state, the lower concrete member 12 is integrated by the apparatus 10 according to the present invention. Therefore, the upper concrete member 11 is not easily separated from the lower concrete member 12.

  3 and 4 show Example 2 of the embodiment of the present invention. In the upper and lower concrete members 11 and 12, only the recesses 13 and 14 are formed at the time of molding, and the coupler 35 is shown. Is different from that of the first embodiment in that it has inwardly protruding portions 33 and 34. The coupler 35 has an outer diameter that fits within the recesses 13 and 14 and a length that is greater than the sum of the depths of the recesses 13 and 14 of the upper and lower concrete members 11 and 12, and is substantially drum-shaped as in Example 1. Although it has an outer shape, protrusions 33 and 34 are provided inwardly at the boundary between the tapered coupling end portions 31 and 32 and the central body portion 30. Further, in the case of Example 2, shaft bodies 25 and 26 which are reinforcing bars provided in the concrete members 11 and 12 protrude into the concave portions 13 and 14, and accordingly, small holes 36 through which these shaft bodies 25 and 26 pass. , 37 are provided on the coupling end face of the coupling tool 35. Further, the surfaces of the shaft bodies 25 and 26 are threaded as rough surfaces 38 and 39 to improve the coupling force by biting the inwardly protruding portions 33 and 34.

  Also in the case of the construction according to Example 2, the coupling tool 35 is fitted in the concave portion 14 of the lower concrete member 12, and the shaft body 26 enters the coupling tool 35 from the lower small hole 37, and the upper part thereof The concrete member 11 is lowered. At that time, the tip of the shaft 25 enters the upper small hole 36 of the coupler 35, and when the upper concrete member 11 approaches the lower concrete member 12, the coupler 35 having a vertical dimension larger than the depth of the recesses 13 and 14. Will be pressurized from above and below, and the inward projections 33 and 34 will be deformed to bulge inward to reduce the inner diameter, and the rough surfaces 38 and 39 that have entered the couplers of the shaft bodies 25 and 26. The two parts are brought into contact with each other to be joined together. In the state of FIG. 4, the upper and lower concrete members 11, 12 are integrated from the apparatus 10, so that even if the upper concrete member is lifted, it is not easily separated.

5 and 6 show Example 3 of the embodiment of the present invention and correspond to a modification of Example 1. FIG. That is, Example 3 is different from Example 1 in that inward protruding edges 41 and 42 are provided at the opening ends of the reinforcing members 16 and 17, and the protruding edges 41 and 42 are the same as those of the coupler 15 before deformation. It has an inner diameter that allows the outward projections 23 and 24 to pass (FIG. 5). When the coupler 15 is deformed by the approach of the upper and lower concrete members 11 and 12 and the outer diameters of the protrusions 23 and 24 are increased, the inward protruding edges 41 and 42 provided at the opening ends of the reinforcing members 16 and 17. The outer protrusions 23 and 24 are deformed to increase the outer diameter, and are pressed against and integrated with the inner wall surfaces of the reinforcing members 16 and 17. Since the inner diameter is larger than the inner diameter, even if the pressure contact portion of the inner wall surface is displaced, it cannot come out from the projecting edges 41 and 42. Therefore, the connection of the concrete members 11 and 12 in Example 1 is made more reliable.

  7 and 8 show Example 4 of the embodiment of the present invention, and correspond to a modification of Example 2. FIG. Then, if it demonstrates using the code | symbol of Example 2, Example 4 is different from Example 2 in the point which provided the hook-shaped protrusions 43 and 44 at the front-end | tip of the shaft bodies 25 and 26, and the protrusion 43, Reference numeral 44 has an outer diameter through which the inward projections 33 and 34 of the coupler 35 before deformation can pass (FIG. 7). When the coupling member 35 is deformed by the approach of the upper and lower concrete members 11 and 12 and the inner diameters of the projecting edges 43 and 44 are reduced, they bite into the rough surfaces 38 and 39 on the outer circumferences of the shaft bodies 25 and 26 and are combined and integrated. By making the diameter smaller than the outer diameter of the flange-like protrusions 43 and 44, even if the pressure contact with the rough surfaces 38 and 39 is shifted, the protrusions 43 and 44 do not come out. Therefore, the thing of Example 4 makes the connection of the concrete members 11 and 12 in Example 1 more reliable.

FIG. 9 and FIG. 10 show Example 5 of the embodiment of the present invention, which is an example in which the present invention is applied to concrete members 51 and 52 laid out on the left and right, unlike the previous examples. In the case of the coupling device 10 'of Example 5, it corresponds to the side of the coupling device 10 of Example 1, but not only that, but the shafts 45 and 46 which are reinforcing bars are used to prevent the coupling device 55 from falling off. 56 is provided to hold the coupler 55 correctly until the left and right concrete members 51 and 52 approach and press contact. Reference numerals 53 and 54 denote concave portions which are covered with insert-molded reinforcing members 57 and 58. In the illustrated example, the recess 54 and the reinforcing member 58 on the side where the drop-off prevention pin 56 is provided are larger in size, and the coupler 55 is also larger by the amount connected to the drop-off prevention pin 56. In addition, the coupler 55 has projecting portions 63 and 64 that face outward, and a middle diameter portion 65 having a larger diameter than both ends is provided between the both ends, and both ends are open.

  In the case of construction using the apparatus of Example 5, the coupling tool 55 is fixed to the drop-off prevention pin 56 of the right concrete member 52, the left concrete member 51 arranged on the left side is matched with the coupling portion, and the level is set. After confirming, one or both of the left and right concrete members 51, 52 are brought close to each other by applying an external force, and the reinforcing member is deformed by pressurizing the coupler 55 having a length larger than the sum of the depths 57, 58. Then, by increasing the diameter of the outwardly projecting protrusions 63 and 64, they are pressed against the inner wall surfaces of the reinforcing members 57 and 58 to create a combined state (FIG. 10). Thus, the left and right juxtaposed concrete members 51 and 52 shown in Example 5 can also be coupled or connected by applying the coupling force by the coupling device 10 'of the present invention. Moreover, it is possible to add the same change as Example 2, 3, and 4 shown in FIG.3, FIG.5, FIG.7 also about the coupling apparatus 10 'of the left-right juxtaposed concrete members 51 and 52 like Example 5. FIG. . In the fifth example, the concave portions 53 and 54 or the reinforcing members 57 and 58 can be configured in a convenient manner for guiding the concrete members 51 and 52.

  The external force for approaching and contacting the concrete members 11, 12, 51, 52 can be obtained by applying the load from the bolt fastening force, other compressive force, or applied pressure in addition to using the load of the upper concrete member 11. Can do. The couplers 15 and 55, the reinforcing members 16, 17, 57, and 58 are basically made of steel, but can be used other than steel as long as they are strong materials that exhibit plasticity that does not deform and return to their original shape. it can. Other suitable materials are, for example, resin materials that exhibit little thermosetting or elasticity.

  It can be used for joining and connecting heavy steel members as well as connecting and connecting steel, concrete, wooden members and other heavy objects as well as concrete members.

Sectional drawing before the deformation | transformation which shows Example 1 of embodiment of the coupling | bonding apparatus of the concrete member which concerns on this invention. Sectional drawing after a deformation | transformation same as the above. Sectional drawing before a deformation | transformation which similarly shows Example 2. Sectional drawing after a deformation | transformation same as the above. Sectional drawing before a deformation | transformation which similarly shows Example 3. FIG. Sectional drawing after a deformation | transformation same as the above. Sectional drawing before a deformation | transformation which similarly shows Example 4. FIG. Sectional drawing after a deformation | transformation same as the above. Sectional drawing before a deformation | transformation which shows the example 5 same as the above. Sectional drawing after a deformation | transformation same as the above.

Explanation of symbols

10, 10 'coupling device 11, 12, 51, 52 Concrete member 13, 14, 53, 54 Recess 15, 35, 55 Joint 16, 17, 57, 58 Reinforcement member 18, 19 Guide slope 23, 24, 63, 64 Outward protrusions 25, 26, 45, 46 Shaft bodies 33, 34 Inward protrusions 38, 39 Rough surface 41, 42 Inward protrusion edges 43, 44 Sponge-shaped protrusion edges

Claims (5)

An apparatus for joining a concrete member at a predetermined position, wherein the concrete member has a concave portion at a joint portion, and the concave portion is tapered from the joint portion toward the inside of the concrete member. Therefore, it has a guide slope capable of guiding the concrete member, and also has a coupler having a shape and a hollow structure that fits into a concave portion that is a joint portion of the concrete member. It is deformed by being pressed in the recess by approaching or contacting, and is in a pressure contact state with the inner wall surface of the recess, or is outward or inward in a pressure contact state with a shaft disposed inside the coupler. A concrete member coupling device having a protrusion. The apparatus for connecting concrete members according to claim 1, wherein the device for guiding the concrete members and connecting them at a predetermined position connects adjacent concrete members at a predetermined position. 3. The concrete member joining apparatus according to claim 1, wherein a reinforcing member constituting an inner wall surface of the concave portion is integrated as an insert member at the time of molding the concrete member at the joint portion of the concrete member. The reinforcing member has an inward protruding edge at the opening end, and the protruding edge has an inner diameter that allows the outward protruding protrusion to pass through and does not allow the protruding protrusion to pass through. Equipment for concrete members. The shaft body has a flange-like protruding edge at the tip, and the protruding edge has an outer diameter that allows an inward protruding portion before deformation to pass through and does not allow a protruding portion after deformation to pass. Equipment for concrete members.

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