JP3059351U - Connector for concrete members - Google Patents

Abstract

(57) [Problem] To provide a concrete member connector capable of shortening the working time and having sufficient strength against the force for separating the blocks from each other. SOLUTION: A connection cylinder 3 is embedded and fixed in a connection surface 2 of a concrete block 1, and an insertion groove 5 is formed in the connection cylinder 3. An engaging portion 12 that can be inserted into the connecting cylinder 3 from the longitudinal direction and that engages with the insertion groove 5 is formed. The connecting member 11 is formed by connecting the pair of locking portions 5 and 5 by the connecting portion 13. The connecting portion 13 has a thickness that can be inserted into the insertion groove 5. Then, the insertion grooves 5, 5 of the concrete blocks 1, 1 are aligned with each other, and the connecting portions 13 are inserted into the insertion grooves 5, 5 from the longitudinal direction. 5 and 5 are inserted, and the gap is filled with the filler 15. Thereby, the concrete blocks 1 and 1 can be easily connected to each other.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a connector for a concrete member such as a concrete block.

[0002]

[Problems to be solved by the invention]

 Conventionally, in this type of connection of concrete members, there has been known a method in which joint reinforcing bars projecting from a concrete member are welded to each other and concrete is poured into these joint reinforcing bars. As shown in Fig. 4 of the official gazette, a semicircular recess is located at the center in the width direction at the longitudinal end of the upper surface of the block main body, and a part of the reinforcing bar arranged inside the base block. Is projected into the recess, and a hook ring is formed at an end of the reinforcing bar (Microfilm, page 3, line 18 to page 4, page 3 to page 3 of Japanese Patent Application Laid-Open No. 48-54426). Row), a method of connecting the above-mentioned hook ring with a hook is known, and further, as shown in FIG. 2 and FIG. In a state where the concrete blocks are connected A bolt, a nut engaging with the bolt, and a flat plate are used for the stopper (the microfilm, page 9, lines 3 to 7 in the application specification of Japanese Utility Model Application Laid-Open No. 4-22513). There is known a method of connecting blocks to each other by using a plate-shaped stopper provided.

[0003] However, welding of the above-mentioned welded reinforcing bars requires welding work on site, which is troublesome and time-consuming, and is inferior in workability. Further, in the case of Japanese Utility Model Application Laid-Open No. 48-54426, workability is improved by using hooks, but since the structure is such that only the upper surface side of the block is connected, sufficient connection strength cannot be obtained. . Further, Japanese Unexamined Utility Model Publication No. Hei 4-22513 also has a structure in which the blocks are connected by fasteners on the outer surfaces of the blocks, so that sufficient strength cannot be obtained against a force in a direction in which the blocks are separated from each other.

Further, it is preferable that the structure for connecting such concrete blocks is lightweight, easy to handle on site, and easy to work.

[0005] Therefore, an object of the present invention is to provide a connector for a concrete member which can be easily operated, has sufficient strength against a force for separating the blocks, and can be easily connected.

[0006]

[Means for Solving the Problems]

 The invention according to claim 1 is a concrete member connecting tool for connecting connecting points of concrete members, wherein the connecting cylinder body is embedded in and fixed to the concrete member and has an insertion groove formed in the connecting point. An engaging portion that can be inserted into the connecting cylinder from the length direction and can be engaged with the insertion groove, and the engaging portion that is inserted into the mutual connecting cylinder are connected to each other, and are inserted into the mutual insertion groove. It has a connecting portion that can be inserted from the longitudinal direction, and a filling portion formed between the connecting cylinder and the locking portion and filling the filling material.

According to the structure of the first aspect, the insertion grooves of the concrete members are aligned with each other, the connecting portions are inserted into the respective insertion grooves from the longitudinal direction, and the locking portions are inserted into the respective connection cylinders. In addition, the filler can be filled in the filling portion to connect the concrete members to each other.

In the invention of claim 2, the locking portion is formed in a hollow.

According to the configuration of the second aspect, since the locking portion is hollow, the locking portion is relatively lightweight, and handling on site is easy.

[0010] Further, in the invention of claim 3, the center of the rectangular steel pipe is crushed to form the connecting portion by the center, and the locking portion is formed by both side portions of the connecting portion. .

According to the configuration of the third aspect, the connecting portion and the locking portion can be formed only by crushing the central portion of the square steel pipe, so that the manufacturing is easy and the parts of the connecting tool are inexpensive. . Further, since the locking portion has a substantially triangular frame shape, the strength is excellent.

Further, in the invention of claim 4, the locking portion is a bent portion in which both sides of the connecting portion are bent.

[0013] According to the configuration of the fourth aspect, the bent portion serves as a locking portion that locks into the insertion groove, and the blocks can be connected to each other.

According to a fifth aspect of the present invention, an attachment reinforcing member embedded in the concrete member is provided in the connection cylinder.

According to this configuration, the connecting cylinder can be firmly fixed to the concrete member, and the mounting strength can be improved.

[0016]

[Embodiment of the invention]

 Hereinafter, the present invention will be described with reference to the accompanying drawings. 1 to 3 show a first embodiment of the present invention. As shown in FIG. 1, reference numeral 1 denotes a precast concrete block which is a concrete member, and right and left concrete blocks 1 and 1 are connection points. The connection surfaces 2 and 2 are abutted and fixed. A connection cylinder 3 made of a cylindrical steel pipe is embedded and fixed to the connection surface 2. The connection cylinder 3 has a length substantially equal to that of the connection surface 2. The concrete block 1 is open at the longitudinal end surface 4 thereof. Further, an insertion groove 5 opening in the connection surface 2 is formed in the connection cylinder 3 over the entire length thereof, and the insertion groove 5 has a slit shape. Further, an expanded metal 7 as a mounting reinforcing material is provided on the connecting cylinder 3 over the entire length of the connecting cylinder 3 in the longitudinal direction, and the expanded metal 7 is fixed by welding or the like. Further, the expanded metal 7 is formed by pulling a plate material in which cuts are alternately formed to form a wire net, and has a plurality of holes 7A. A plurality of internal reinforcing bars 8 embedded in the concrete block 1 are fixed to the expanded metal 7.

The concrete block 1 provided with the connection cylinder 3 is connected by a separate connection member 11. In this connecting member 11, locking portions 12, 12 to be inserted into the connecting cylinder 3 from its length direction are arranged on both sides in a substantially parallel manner, and the locking portions 12, 12 on both sides are integrally formed by a connecting portion 13. Be connected. As shown in FIG. 3, the connecting member 11 is formed of a square steel pipe K having a substantially rectangular cross section, and the center of the steel pipe K in the width direction is crushed to form the connecting portion 13 with the center. The engaging portion 12 is constituted by substantially triangular portions on both sides of the connecting portion 13. Then, the connecting portion 13 is inserted into the connecting cylinder 3, and a space between the connecting cylinder 3 and the connecting portion 13 becomes a filling portion 14. The filling portion 14 is filled with a filler 15 made of synthetic resin or the like. The filler 15 is made of a synthetic resin adhesive such as an epoxy resin, and the epoxy resin is a two-pack epoxy resin composed of a main agent and a curing agent.

Next, a method of connecting the concrete blocks 1 will be described. As shown in FIG. 1, the concrete blocks 1 and 1 are arranged by aligning the mutual insertion grooves 5. If, for example, the block 1 serves as the foundation of a high-floor house, it is placed upright at a predetermined location on the site. From the end face 4 side of the concrete blocks 1, 1, the engaging members 12, 12 are aligned with the connecting cylinders 3, 3, and the connecting member 13 is aligned with the mutual insertion grooves 5, 5, and the connecting member 11 is moved in the longitudinal direction. Insert from. When the block 1 is erected, one of the end surfaces 4 is the upper surface. When the insertion is completed, the filling portion 14 and the hollow locking portion 12 in the gap between the connecting cylinder 3 and the locking portion 12 are filled with a filler 15 made of synthetic resin or the like. The filler 15 is also filled into joints between the connecting surfaces 2 of the blocks 1 and 1. In the connection work, since the engaging portion 12 is hollow, the connecting member 11 is light in weight and easy to handle, and the engaging portion 12 is loosely inserted into the connecting cylinder 3 as shown in FIG. Therefore, the insertion of the connection member 11 is easy, and after the insertion of the connection member 11, the distance between the opposed connection surfaces 2 can be adjusted. In the blocks 1 and 1 connected in this manner, the locking portion 12 is fixed by the filler 15 in the connecting cylinder 3 even when a force for separating the blocks 1 and 1 is applied. Even if a force for expanding the insertion groove 5 acts due to the separating force, the deformation of the insertion groove 5 is prevented by the reinforcing member 6 provided so as to sandwich the insertion groove 5 from both sides. Further, even if a force for pulling out the connection cylinder 3 itself is applied, the expanded metal 7 embedded in concrete is fixed to the connection cylinder 3, so that the expanded metal 7 can withstand the expansion metal 7. By fixing the internal reinforcing bar 8 to the metal 7, the connecting cylinder 3 is firmly fixed to the concrete block 1.

As described above, in the present embodiment, according to the first aspect, in the concrete member connecting tool for connecting the concrete blocks 1, 1 serving as concrete members, and the connecting surfaces 2, 2 connecting portions of the concrete blocks, A connecting cylinder body 3 having an insertion groove 5 which is buried and fixed in the connection surface 1 and has an opening in the connection surface 2; A connecting portion 13 for connecting the locking portion 5 and the locking portions 5 to be inserted into the connecting cylindrical bodies 3 and 3 to be inserted into the inserting grooves 5 and 5 from the longitudinal direction; Since it has a filling portion 14 formed between the body 3 and the locking portion 12 and filling the filling material 15, the insertion grooves 5, 5 between the concrete blocks 1, 1 are aligned with each other, and The connecting portions 13 are inserted into the insertion grooves 5 and 5 from each other, and each connecting cylindrical body is inserted. The concrete blocks 1 and 1 can be easily connected to each other by inserting the locking portions 5 and 5 on both sides into the portions 3 and 3 and filling the filling portion 14 with the filling material 15. Connection workability can be improved. In addition, unlike the conventional connection in which only the end face 4 is connected, the connection surface 2 can be connected with uniform strength over the entire length.

Further, in this embodiment, since the locking portion 12 is formed in a hollow shape according to the second aspect, the locking portion 12 is relatively lightweight, and handling work on site can be performed. It will be easier.

Further, in the present embodiment, as described above, the center of the square steel pipe K is crushed to form the connecting portion 13, and the connecting portion 13 is formed on both sides of the connecting portion 13. Since the locking portions 12, 12 are formed, the connecting portion 13 and the locking portions 12, 12 can be formed only by crushing the central portion of the square steel pipe K, which facilitates manufacture and connection. Tool parts are cheaper. Moreover, since the locking portion 12 has a substantially triangular frame shape, the strength is excellent.

As described above, according to the present embodiment, the connecting cylinder 3 is provided with the expanded metal 7 as the mounting reinforcing material embedded in the concrete block 1 as the concrete member. Therefore, the connecting cylinder 3 can be firmly fixed to the concrete block 1 and the mounting strength can be improved.

Further, as an effect on the embodiment, by using the expanded metal 7 as the mounting reinforcing material, since the expanded metal 7 is a perforated plate having a plurality of holes 7A, the expanded metal 7 is provided in the plurality of holes 7A. When the concrete enters, the adhesion to the concrete block 1 is improved. In addition, cement paste, mortar, resin mortar, or the like can be used for the filler 15, but by using a synthetic resin adhesive, the connecting cylinder 3 and the locking portion 12 are firmly integrated. Further, by using a synthetic resin adhesive having a waterproof property at the joint between the connection surfaces 2 and 2, the connection surfaces 2 and 2 are bonded together, and the seashore retaining wall, It is possible to respond to places where water stoppage is required, such as sabo dams, seawalls and building foundations. The resin mortar is obtained by mixing an aggregate with a synthetic resin adhesive or the like. In addition, since the block 1 is placed upright in the length direction of the connecting cylinder 3 and the connecting member 11 is inserted from above the lower part, the work is easy. Further, since the locking portion 12 loosely inserted into the connecting cylinder 3 can be moved in the width direction of the connecting portion 13 by the gap between the connecting cylinder 3 and the locking portion 12, the distance between the blocks 1 and 1 can be reduced. By adjusting the distance of the concrete member, the dimension of the concrete member can be adjusted.

FIG. 4 shows a second embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The connecting surfaces 2, 2 are provided on both sides of the connecting tubes 2, 3, respectively. The connecting tubes 3, 3 are embedded and fixed on the connecting surfaces 2, 2, and the expanded metal 7, 7 provided integrally with the connecting tubes 3, 3 is provided. The two are connected by a plurality of internal reinforcing bars 8. Therefore, the other blocks 1 can be connected to both sides of the block 1 and the connection cylinders 3 on both sides are connected by the internal reinforcing bars 8, so that the connection cylinders 3 are firmly integrated with the block 1. Can be Also, a deformed reinforcing bar having a plurality of circumferential projections 8A is used as the inner reinforcing bar 8.

FIG. 5 shows a third embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. , A steel plate or the like, and is formed into a substantially S-shape. The bent portions 12A, 12A of which the both sides of the connecting portion 13A are bent form an engaging portion.

As described above, according to the present embodiment, the same operation and effect as those of the above-described embodiment can be achieved according to the first and fifth aspects. Are bent portions 12A, 12A in which both sides of the connecting portion 13A are bent in the opposite direction in a curved shape, and these bent portions 12A, 12A become locking portions for locking in the insertion groove 5, and connect the blocks 1, 1 to each other. can do.

FIG. 6 shows a fourth embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. , A steel plate or the like, is formed in a substantially U-shape. For example, U-shaped steel is used, and the locking portion is constituted by bent portions 12B, 12B in which both sides of the connecting portion 13B are bent in the same direction. .

As described above, in the present embodiment, the same operation and effect as those of the above-described embodiment are achieved according to the first and fifth aspects. In this example, the locking portion corresponds to the fourth aspect. Are bent portions 12B, 12B of which both sides of the connecting portion 13B are bent, and these bent portions 12B, 12B become locking portions for locking in the insertion grooves 5, so that the blocks 1 and 1 can be connected to each other.

FIG. 7 shows a fifth embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The connecting portion 13B is formed by bending portions 12B, 12B having opposite sides bent in opposite directions to form a locking portion.

FIG. 8 shows a sixth embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. It is made of, for example, H-shaped steel or I-shaped steel, and has locking portions 12C, 12C on both sides of the connecting portion 13C.

As described above, according to the present embodiment, actions and effects similar to those of the above-described embodiment are exhibited, corresponding to the first and fifth aspects.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, a plurality of connection cylinders 3 may be embedded and fixed on one connection surface. Further, the shapes of the connection cylinder and the locking portion are not limited to a circle, and may be a square cylinder or a square, and a combination thereof such as using a square cylindrical insertion cylinder and a circular locking portion is also possible. It can be selected as appropriate, and a square collecting basin, a circular collecting basin or a circular caisson can be assembled and constructed on site. Further, the mounting reinforcing material may be a plate material, and it is preferable to use a perforated plate in which holes are formed in the plate material in order to enhance the adhesion to concrete. The present invention is also applicable to various concrete secondary products, that is, precast concrete members. Further, in the embodiment, the connecting portion made of a plate material is shown, but various types can be used as long as the connecting portions on both sides are connected with a predetermined strength. For example, the connecting portions on both sides can be used. It may be configured to be connected to these by a plurality of metal rods in the cross direction. In this case, the metal rods may be inserted into the respective insertion grooves from the length direction. It goes without saying that the present invention can also be applied to concrete blocks in which internal reinforcing bars are not buried. Further, it is not always necessary to fix the internal reinforcing bar to the mounting reinforcing material.

[0033]

According to a first aspect of the present invention, in a connecting member for a concrete member for connecting connecting portions of concrete members, an insertion groove which is buried and fixed in the concrete member and is opened at the connecting portion is formed. Connecting the connecting cylinder, a locking portion that can be inserted into the connecting cylinder from the length direction and lockable with the insertion groove, and the locking portions that are inserted into the mutual connecting cylinders; It has a connecting portion that can be inserted into the mutual insertion groove from the longitudinal direction, and a filling portion that is formed between the connecting cylinder and the locking portion and fills the filling material. It is possible to provide a concrete member connecting tool which is easy and has sufficient strength against the force for separating the blocks from each other, and is easy to connect.

[0034] In the invention of claim 2, the locking portion is formed in a hollow, so that the work is easy, sufficient strength is obtained against the force for separating the blocks, and the connection work is performed. Can easily provide a connector for a concrete member.

Further, in the invention of claim 3, the center of the rectangular steel pipe is crushed to form the connecting portion by the center, and the locking portion is formed by both side portions of the connecting portion. It is possible to provide a concrete member connecting tool that is easy to work, has sufficient strength against the force for separating the blocks from each other, and is easy to connect.

[0036] In the invention of claim 4, the locking portion is a bent portion in which both sides of the connecting portion are bent, so that the work is easy and sufficient strength is obtained against a force for separating the blocks from each other. In addition, it is possible to provide a connecting member of a concrete member that can be easily connected.

Further, in the invention of claim 5, the connecting tubular body is provided with a mounting reinforcing material embedded in the concrete member, so that the work is easy and sufficient for the force to separate the blocks from each other. It is possible to provide a concrete member connecting device which is strong and can be easily connected.

[Brief description of the drawings]

FIG. 1 is a plan view of a connection point showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a connection point showing the first embodiment of the present invention.

FIG. 3 is a plan view illustrating a method of manufacturing a connecting member according to the first embodiment of the present invention.

FIG. 4 is a plan view of a concrete member according to a second embodiment of the present invention.

FIG. 5 is a plan view of a connection point showing a third embodiment of the present invention.

FIG. 6 is a plan view of a connection point showing a fourth embodiment of the present invention.

FIG. 7 is a plan view of a connection point showing a fifth embodiment of the present invention.

FIG. 8 is a plan view of a connection point showing a sixth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete block (concrete member) 2 Connection surface (connection part) 3 Connection cylinder 4 Insertion groove 6 Reinforcement material 12, 12C Locking part 12A, 12B Bending part (locking part) 13, 13A, 13B, 13C Connecting part 14 Filling section 15 Filling material

Claims (5)

[Utility model registration claims] 1. A connecting member of a concrete member for connecting connecting points of concrete members, wherein the connecting tube is embedded in and fixed to the concrete member and has an insertion groove formed in the connecting portion. A locking portion that can be inserted into the body from the length direction and can be locked in the insertion groove;
A connecting portion that connects the locking portions to be inserted into the mutual connecting cylinders and that can be inserted into the mutual insertion grooves from a length direction, and that is formed between the connecting cylindrical body and the locking portions; And a filling part for filling with a filler. 2. The connecting member for a concrete member according to claim 1, wherein said locking portion is formed in a hollow. 3. The rectangular steel pipe according to claim 1, wherein the center is crushed to form said connecting portion by said center, and said locking portion is formed by both side portions of said connecting portion.
Or a connector for a concrete member according to 2. 4. The concrete block connecting device according to claim 1, wherein the locking portion is a bent portion in which both sides of the connecting portion are bent. 5. The concrete block connector according to claim 2, wherein an attachment reinforcing member embedded in the concrete member is provided on the connection cylinder.