KR100347257B1 - Method for coupling concrete culvert - Google Patents

Abstract

The present invention relates to a method for connecting a concrete culvert, so that the bolt insertion grooves (15a ', 15b', 15c ', 15d'; 26b '; 35a') is positioned between the outer seal member 41 and the inner seal member 42. And, a pair of concrete culverts (10, 20; 20, 30) correspondingly to the opposite ends of the bolt 50 is inserted in advance both ends of the coupling grooves (10, 20, 30) of each concrete culvert (10b; 20b; 30b), the nuts 71 and 72 are fastened with the grout mortar injection support members 81 and 82 inserted into both ends of the bolt 50, and the grout mortar injection support members 81 The grout mortar is injected into the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a' through the 82, and the bolt insertion grooves 15a ', 15b', 15c ', 15d '; 26b'; 35a '), and the gap between the connecting surfaces 16, 25 and 26, 35, which are in communication with the outer seal 41 and the inner seal 42, is filled with grout mortar. Curing Will.

Description

How to connect concrete culverts {METHOD FOR COUPLING CONCRETE CULVERT}

The present invention relates to a method for connecting concrete culverts, and more particularly, to connecting concrete culverts through a bolt and a nut, to a method for connecting concrete culverts to prevent corrosion of the bolts so as not to decrease the fastening force of the concrete culverts.

As is well known, concrete culverts used as connection passages for fluids are classified according to their cross-sectional shape, and block concrete culverts as shown in FIG. 3 are used as large concrete culverts.

According to FIG. 3, the conventional concrete culvert has an inner hole 110a penetrating through the front surface 115 and the rear surface 116, and grooves 115a and 115b are formed along the middle circumference of the front surface 115 and the rear surface 116. 115c and 115d are formed, and a plurality of opening grooves 111a, 111b and 111c; 111a ', 111b' and 111c 'communicate with the upper groove 115a of the front 115 and the rear 116, respectively. 111). In addition, fastening grooves 110b are formed in the middle portions of the upper, lower, left, and right surface boundary portions of the inner surface constituting the inner hole 110a, and the pipes 191 are formed at the corners of the front surface 115 and the rear surface 116. Are respectively inserted, one end of the pipe 191 is opened to the outside of the front and rear surfaces (115, 116) while the other end is exposed to the fastening groove (110b).

Referring to the process of connecting the concrete culvert (110, 120, 130) using the tender 190 with reference to Figures 3 and 4, first, the outer seal 41 along the outer circumference of the front surface (115; 135) except the upper After attaching the inner sealing material 42 along the inner circumference of the front (115; 135), a plurality of side grooves (115b, 115c) of the front (115; 135) and the rear (116; 126) Install the ring bolts 192, respectively, so that the center of the ring hole of each ring bolt 192 is located on the same line.

Then, a pair of concrete culverts (120, 130) correspondingly, but in advance to put the tender 190 in the pipe 191 of each concrete culvert (120,130), both ends of the tender 190 of both concrete culverts (120,130) After being exposed to the fastening grooves 120b and 130b, the one end of the tender 190 is fixed to the end of the pipe 191 of the concrete culvert 130 as shown in FIG. 4. Pull the other end to fix it to the end of its pipe (191).

Thereafter, a pair of steel rods 193a and 193b are inserted into both injection holes a and c, respectively, so that the ring bolts 192 are provided at both side grooves 115b and 115c of the front and rear surfaces 126 and 135 of the concrete culvert. The steel rods 193a and 193b are inserted into each other.

Subsequently, when grout mortar is injected into the injection holes a, b, and c, holes formed by the grooves 115a, 115b, 115c, and 115d of the butted concrete culverts 120 and 130, and the opening grooves 111a, 111b, 111c; After the grout mortar is filled in the injection holes (a, b, c) formed by the 111a ', 111b', and 111c ', it is cured, and a pair of concrete culverts (120, 130) are joined together.

Thereafter, the above operations are repeated in order to sequentially connect the plurality of concrete culverts 110, 120, and 130 so that the inner holes 110a and 120a communicate with each other.

When the connection of the concrete culverts (110, 120, 130) is completed, the mortar is filled and cured in the fastening grooves (110b, 120b) of the concrete culverts (110, 120, 130), respectively, the inner and outer gaps (inner and outer) of the facing surface of the concrete culverts (110, 120, 130) The sealing material is sealed by injecting a finishing material such as silicon into the thickness of the sealing material and the gap caused by the dimensional error.

3 and 4, the conventional concrete culverts 110, 120, and 130 have pipes 191 installed at inner corners of the inner sealer 142, so that the outer gaps include inner and outer seals 41 and 42 and recesses ( The airtightness is maintained sufficiently by the grout mortar filled and cured in 115a, 115b, 115c, and 115d, but since the internal gap is kept only by the finishing material, the operator has not properly performed the injection of the material into the internal gap. Or, if the finish is damaged by an external impact, some of the fluid flowing along the inner holes (110a, 120a) is introduced between the pipe 191 and the tender 190 through the inner gap of the concrete culvert (110, 120, 130) Steel pipe 191 and the tender 190 is corroded. In particular, when the tender 190 is corroded, the fastening force of the concrete culverts 110, 120, and 130 is greatly lowered. When the load is applied from the outside, the tender 190 is disconnected and the concrete culverts 110, 120, and 130 are separated, and the inner holes 110a, The fluid that flowed along 120a) leaks out. Therefore, as shown in Figure 3, by installing the ring bolt 192 and the steel bar (193a, 193b), even if the tender 190 is broken by the connection of these ring bolt 192 and the steel bar (193a, 193b) Concrete culverts (110, 120, 130) is to prevent separation.

However, when the tender 190 is broken, even if the concrete culvert 110, 120, 130 is not separated from each other by the ring bolt 192 and the steel rods 193a, 193b, the front surface (115,135) of the connection surface of the concrete culvert 110 (120,130) Since the gap between the back and the back 116, 126 is inevitably generated, the fluid of the inner holes 110a and 120a cannot be prevented from leaking to the outside.

In addition, during the connection work of the concrete culvert (110, 120, 130), the worker climbs to the top (111, 121, 131) of the concrete culvert (110, 120, 130), lifts the steel rods (193a, 193b), and then lifts the raised steel bars (193a, 193b) inlet (a, c) There is a hassle to put into the ring bolt (192), and the installation cost is increased due to the complicated structure and the number of members.

On the other hand, Figure 5 is a view for explaining another example of the conventional concrete culvert, showing a conventional concrete culvert connecting the concrete culvert through the bolt 50 and the nuts (71, 72), such conventional concrete culvert 3 and 4, the fluid flowing into the inner gap, or the outer gap between the front surface 35 and the rear surface 26, which is the connection surface of the concrete culvert, as shown in the concrete culvert 110, 120, 130, the bolt insertion groove ( 26b ', 35a') is introduced into the gap between the bolt 50, the problem that the corrosion of the bolt 50 is promoted.

Therefore, the present invention was invented to solve the above problems, when connecting the concrete culvert through the bolt and the nut, the connection method of the concrete culvert so that the fastening force of the concrete culvert is not lowered by preventing corrosion of the bolt The purpose is to provide.

1 is a perspective view showing a concrete culvert connected in accordance with the present invention,

FIG. 2 is a cross-sectional view taken from the side direction by cutting the X part of FIG. 1 in a vertical direction; FIG.

3 is a perspective view showing a concrete culvert according to the prior art,

4 is a view for explaining a connection state of the concrete culvert shown in FIG.

5 is a view for explaining another example of connecting the concrete culvert, corresponding to FIG.

10,20,30; Concrete culverts, 10a, 20a; Interior Hall,

10b, 20b, 30b; Fastening grooves, 11,21,31; Top View,

12,13; Side, 14; Bottom View,

15,35; Front, 15a, 15b, 15c, 15d; Corner,

15a ', 15b', 15c ', 15d', 26b ', 35a'; Bolt Insert Groove,

15e, 26e, 35e; Border, 15f, 35f; waist,

16,26; Back side, 26f; Iron-Metal,

41; Outer seal, 42; Inner seal,

43; First reinforcing seal member, 44; Second reinforcement sealing material,

50; Bolt, 51,52; Thread,

61,62; Washers, 71, 72; nut,

81,82; Anchor plates, 81a, 82a; Grout mortar inlet,

90; Reinforcement member.

In order to achieve the above object, the present invention attaches the outer sealing material to the entire outer circumference of the front or rear of the concrete culvert such that the bolt insertion groove is positioned between the outer sealing material and the inner sealing material, and the inner circumference of the entire inner circumference thereof. Attaching a sealing material; A pair of concrete culverts are matched correspondingly so that the convex portions of the back of the concrete culvert fit into the recesses of the front of the concrete culvert, and the bolts are inserted into the bolt insertion grooves of each concrete culvert in advance, so that both ends of the bolt are After protruding into the fastening groove of the; A pair of concrete culverts are integrated by tightening a nut in a state in which a supporting member for grout mortar injection is inserted at both ends of the bolt; Injecting grout mortar into the bolt insertion groove through a support member for grout mortar injection; The gap between the bolt insertion groove and the connection surface sealed by the outer seal member and the inner seal member while being in communication with the bolt insertion groove is filled with grout mortar so as to be cured.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a concrete culvert connected in accordance with the present invention, Figure 2 is a cross-sectional view viewed from the side by cutting the X portion of Figure 1 in the vertical direction, according to the block-shaped concrete culvert (10, 20, 30) ) Is an inner hole (10a; 20a) that is opened to the front surface (15; 35) and the rear surface (16; 26), the recessed portion (Fig. 15f; 35f are formed, and on the back side 16; 26, convex portions 26f protruding outward from the edge 26e and seated on the recessed portions 15f; 35f are formed, and also the opening holes 10a and 20a are formed. Fastening grooves 10b; 20b; 30b are formed at the front and the rear of the upper, lower, left, and right boundary portions of the inner surface, respectively, and the corner portions 15a of the front surface 15; 35 and the rear surface 16; 26. And bolt insertion grooves 15 ', 15b', 15c ', 15d'; 26b '; 35a' that are opened to the corresponding coupling grooves 10b; 20b; 30b, respectively. It is.

Referring to the method of connecting the block-type concrete culvert according to the present invention, the bolt insertion groove (15a ', 15b', 15c ', 15d'; 26b '; 35a') is the outer seal 41 and the inner Attach the outer seal 41 to the entire outer circumference of the front face 15; 35 or the rear face 16; 26 of the concrete culvert 10, 20, 30 so that it is located in the middle of the seal material 42. The inner sealing material 42 is attached to the whole. Thereafter, the pair of concrete culverts 10,20; 20,30 so that the convex portions 26f of the facing concrete culverts 16 and 26 fit into the recesses 15f and 35f of the concrete cullet fronts 15 and 35, respectively. ) Butt the bolt 50 into the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b ', 35a' of each concrete culvert 10, 20, 20, 30 in advance. Put, so that both ends of the bolt 50 is protruded into the fastening groove (10b; 20b; 30b) of each concrete culvert (10, 20, 30). Subsequently, a pair of concrete culverts 10, 20, and 30 are integrated by fastening the nuts 71 and 72 with the grout mortar injection support members 81 and 82 inserted into both ends of the bolt 50. Then, grout mortar is injected into the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a' through the grout mortar injection support members 81 and 82, and the bolt insertion groove 15a ' , 15b ', 15c', 15d '; 26b'; 35a '), and a gap between the connecting surfaces 16, 25; 26, 35 in communication with and sealed by the outer seal 41 and the inner seal 42 Allow (A) to cure after filling with grout mortar.

Thereafter, the above operations are repeated in order to sequentially connect the plurality of concrete culverts 10, 20, 30 so that the inner holes 10a, 20a communicate with each other.

When the connection of the concrete culverts (10, 20, 30) is completed, the curing grooves 10b; 20b; 30b of the concrete culverts (10, 20, 30b) by filling mortar mortar, respectively, concrete culverts (10, 20, A sealing material, such as silicon, is injected into the inner gap and the outer gap B between the connection surfaces 16, 25; 26, 35 of the seal 30. The width k of the gap between the connecting surfaces 16, 25; 26, 35 is determined by the thickness of the inner and outer seals and the gap caused by the dimensional error.

According to the present invention, the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a' are connected to the connection surface sealed by the outer seal member 41 and the inner seal member 42 while being in communication with the bolt insertion grooves 15a ', 15b', 15c ', 15d'; The gap between 16,25 and 26,35 is cured after filling with grout mortar, so that leakage from the outside is almost completely blocked. Therefore, the fastening force between the concrete culverts 10, 20, and 30 is not lowered due to corrosion of the bolt 50 due to leakage.

On the other hand, if the fastening force between the concrete culverts (10, 20, 30) does not change, since only the inner and outer sealing material (41, 42) is sufficiently sealed, as shown in Figure 1 and 2, The support member 81 for grout mortar injection is divided | segmented by partitioning the clearance gap between the connection surfaces 16, 25; 26, 35 through the 1st and 2nd reinforcement sealing materials 43 and 44 which connect the outer sealing materials 41 and 42. (82) and the grout mortar introduced through the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a' is the gap A between the corners 15a, 15b, 15c, and 15d. Even if only to be filled, the connection state of the concrete culvert (10, 20, 30) is satisfactory. In this case, the work time for injecting the mortar is shortened, and there is an advantage of reducing the amount of grout mortar used.

The grout mortar injection support members 81 and 82 may inject grout mortar, and all the known ones having a strength capable of supporting the tension of the bolt 50 may be used. In this embodiment, the grout The anchor plates 81 and 82 in which the mortar injection ports 81a and 82a were formed were used.

The grout mortar injection holes 81a and 82a of the anchor plates 81 and 82 are formed in a spiral shape, and the grout mortar to be injected is formed in the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a'. It is preferable that the rotation is about the bolt 50 to be injected, which is when the grout mortar is injected in parallel to the axial direction of the bolt 50, the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a'), and grout mortar is properly formed in the gap between the connecting surfaces 16, 25 and 26, 35 which are in communication with and sealed by the outer seal 41 and the inner seal 42. It is not filled.

In addition, as shown in dashed lines in FIG. 2, when the reinforcing member 90 is inserted between the bolt 50 and the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b ', 35a', There is an advantage in that the cracks of the grout mortar cast / cured in the gap between the bolt 50 and the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b ', 35a' are prevented. In this embodiment, a coil spring type member made of steel is used as the reinforcing member 90.

According to the present invention as described above, in connecting the concrete culvert through the bolt and the nut, the gap between the bolt insertion groove and the connection surface of the concrete culvert is cured after filling with grout mortar, the bolt due to leakage Corrosion is prevented and the clamping force between concrete culverts does not decrease.

Therefore, there is an effect that the fluid flowing through the inner hole of the concrete culvert is not leaked to the outside of the concrete culvert by keeping the concrete culverts are firmly connected.

The present invention is not limited to the above embodiments, and various modifications may be made without departing from the scope of the following rights.

Claims (6)

Front face of the concrete culvert 10, 20, 30 so that the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a' are positioned between the outer seal 41 and the inner seal 42. Attaching the outer seal 41 to the entire outer circumference of the (15; 35) or the rear face 16; 26, and attaching the inner seal 42 to the entire inner circumference thereof; A pair of concrete culverts (10, 20; 20, 30) are fitted such that the convex portions (26f) of the rear face of the concrete culverts (16; 26) are fitted to the recesses (15f; 35f) of the front of the concrete culverts (15; 35). Correspondingly, the bolt 50 is inserted into the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b ', 35a' of each concrete culvert 10, 20, 20, 30 in advance, After both ends of the bolt 50 is projected to the fastening groove (10b; 20b; 30b) of each concrete culvert (10, 20, 30); A pair of concrete culverts 10, 20, 30 are integrated by fastening the nuts 71, 72 with the grout mortar injection support members 81, 82 inserted in both ends of the bolt 50; Grout mortar is injected into the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a' through the grout mortar injection support members 81 and 82; Bolting grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a', and connecting surfaces 16, 25, 26 which are in communication with and sealed by the outer seal 41 and the inner seal 42 , 35) The method of connecting the concrete culvert, characterized in that the gap between the filling to grout mortar to be cured. The method of claim 1, wherein the gap between the connecting surfaces (16, 25; 26, 35) is divided by the first and second reinforcing sealing members (43, 44) connecting the inner and outer sealing members (41, 42). The grout mortar introduced through the grout mortar injection support members 81 and 82 and the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a' is formed at each corner portion 15a, 15b, Connection method of the concrete culvert, characterized in that to fill only the gap (A) between 15c, 15d). The method according to claim 1 or 2, wherein the grout mortar injection support members (81,82) are anchor plates formed with grout mortar injection holes (81a, 82a). 4. The grout mortar injection ports 81a and 82a are spirally formed so that the grout mortar to be injected is in the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b '; 35a'. Connection method of the concrete culvert, characterized in that the rotation is about the bolt 50 is injected. The bolt according to claim 1 or 2, wherein the reinforcing member 90 is inserted between the bolt 50 and the bolt insertion grooves 15a ', 15b', 15c ', 15d'; 26b ', 35a'. The connection of the concrete culvert, characterized in that the crack of the cast / cured grout mortar in the gap between the 50 and the bolt insertion groove (15a ', 15b', 15c ', 15d'; 26b ', 35a') is prevented Way. The method of claim 5, wherein the reinforcing member (90) is connected to the concrete culvert, characterized in that using a coil spring-shaped member made of a steel material.