KR102298176B1 - Seismic box culvert with improved watertightness and airtightness - Google Patents

Abstract

The present invention relates to a shock-resistant box culvert having improved watertightness and airtightness, which comprises: female coupling parts (110, 110') provided at one end; and a male coupling part (120) installed with a watertight rubber ring (10) at the other end.

Description

Seismic box culvert with improved watertightness and airtightness

The present invention relates to an earthquake-resistant box culvert, wherein when assembling between box culverts, a female coupling part and a male coupling part are pressed together at the contact surface between the box culverts to be coupled, and the upper contact surface of the watertight rubber ring is pressed by the contact surface of the coupled box culvert. And it relates to an earthquake-resistant box culvert with improved watertightness and airtightness, so that the watertight parts are in parallel watertight contact by being fitted and provided with earthquake resistance and watertightness.

In general, culverts are used to form waterways for rainwater, sewage and agricultural and industrial waters, or to make passageways such as sidewalks and roadways, while making underground pits for burial of telecommunications and cold and hot pipes, and storage warehouses for agricultural and fishery products, etc. It is used in various ways in the manufacture of

In particular, prefabricated reinforced concrete culverts, which are made of reinforced concrete and integrally manufactured in advance at a factory, and constructed by assembling and constructing a plurality of unit culverts at the site, are widely used.

The prefabricated reinforced concrete culvert has a method of connecting the culvert in a fitting manner and then directly injecting a filling material such as grouting mortar into the contact surface of the culvert to connect, but this method is a method of unequal subsidence of the ground due to surrounding vibration and deformation of the ground When a tensile force such as such is generated, there is a problem that a crack occurs at the joint of the grouting mortar and a water leak phenomenon occurs.

In addition, when the existing culvert is installed, compaction and soft ground treatment are performed to prevent subsidence in the base ground, but due to unexpected circumstances such as ground subsidence due to the use of groundwater, unevenness of the ground, lack of compaction, construction error, ground subsidence, etc. There is a problem that cracks occur, causing water leakage and backflow.

In addition, there is a method of installing a separate water-tight means such as a water-tight material or rubber packing on one culvert, and then fitting the culvert so that the water-tight means is located between the culvert and the culvert so that the water-tightness is maintained by the water-tight means. During the fitting of the culvert, the watertight means is pushed in one direction by the force of the fitted culvert, so that the watertight means is separated and twisted from the culvert, or damage to the watertight means occurs, as well as the contact surface of the culvert and the watertightness. There was a problem in that the means did not achieve a horizontal state, so that the watertightness was lowered.

In particular, in the case of PC culverts, when deformation occurs in the connection part, watertightness problems occur, and in the case of cast-in-place culverts, when deformation occurs in the culvert itself, not in the connection part, various problems such as deterioration of structure performance have occurred.

Laid-Open Patent Publication No. 10-2011-0001099 (2011.01.06) Laid-Open Patent Publication No. 10-2007-0040498 (2007.04.17) Registered Patent Publication No. 10-1025363 (2011.03.21) Registered Patent Publication No. 10-0651635 (2006.11.23)

It is an object of the present invention, when the culvert is assembled, the contact surface of one culvert presses the female coupling part and the male coupling part, and as the upper contact surface of the watertight rubber ring is pressed and fitted, the female coupling part and the male coupling part come into contact with each other, and watertight To provide an earthquake-resistant box culvert with improved watertightness and airtightness, in which the inclined upper contact surface of the rubber ring is rotated and elastically deformed to closely adhere to the contact surface so that the seismic resistance and excellent watertight coupling between the box culverts can be stably maintained.

The present invention is a box culvert in which a plurality of box culverts are continuously connected and coupled in the longitudinal direction via a watertight rubber ring, wherein the box culvert has a female coupling part at one end and a watertight rubber ring is installed at the other end. The watertight rubber ring includes a support part embedded or inserted into the male coupling part to be integrated with the watertight part, and a watertight part having an upper contact surface protruding to be positioned above the support part and inclined at a predetermined angle. do.

In addition, when the female coupling part of another box culvert is connected to the male coupling part of the box culvert and coupled, the watertight part is formed so that the inclined upper contact surface of the watertight part is in close contact with the contact surface of the female coupling part by the coupled female coupling part in parallel with the contact surface of the female coupling part. Watertightness can be achieved between the box culverts by rotation and elastic deformation.

In addition, between the male coupling part of the box culvert and the female coupling part of another box culvert coupled to the male coupling part, a rubber packing material for blocking the intrusion of foreign substances and moisture is further installed.

In addition, the rubber packing material has a “T” shape, the upper part has a semicircular shape convex upward, and a plurality of insertion protrusions are formed on the outer surface of the lower part, and when the rubber packing material is installed, the female coupling part of the part in contact with the rubber packing material A plurality of female insertion grooves are formed to be spaced apart from each other by a predetermined interval so that the insertion protrusion formed on one side of the lower portion of the rubber packing material can be inserted on the surface, and when the rubber packing material is installed, the number of parts in contact with the rubber packing material A plurality of male insertion grooves may be formed to be spaced apart from each other by a predetermined distance so that the insertion protrusion formed on the other side of the lower portion of the rubber packing material can be inserted on the surface of the coupling part.

In addition, the insertion protrusion of the rubber packing material may be unevenly coupled to the female insertion groove formed in the female coupling portion of the box culvert and the male insertion groove formed in the male coupling portion of another box culvert.

In addition, a plurality of support protrusions and watertight grooves may be formed on the inclined upper contact surface of the watertight portion to have concavo-convex shapes.

In addition, the support part includes a lower support part embedded or inserted into the male coupling part of the box culvert, and an upper support part embedded or inserted so that an upper surface on which a plurality of support grooves are formed coincides with the surface of the male coupling part located on the upper side of the lower support part. and a plurality of retaining protrusions corresponding to the support grooves may be formed on the bottom surface of the watertight portion.

In addition, when assembling between the box culverts, the watertight part is rotated in contact by the female coupling part of the box culvert to be coupled, and the retaining protrusion on the bottom of the watertight part by the contact rotation of the watertight part is unevenly coupled into the support groove of the upper surface to support the watertight part. can do.

In addition, when the rubber packing material is installed, the surface of the female coupling part in contact with the rubber packing material includes a plurality of female coupling columns spaced apart from each other by a predetermined interval and formed with an arm assembly part, and when the rubber packing material is installed, the rubber packing material The surface of the male coupling part of the abutting portion may include a male assembly part in which at least one male coupling pillar capable of being fitted into a space between each of the plurality of female coupling pillars formed to be spaced apart from each other is formed.

In addition, at least one or more of the male coupling posts are fitted into the space between each of the plurality of female coupling posts, and the rubber packing material installed along the coupling gap is a female coupling post positioned at the uppermost end of the plurality of female coupling posts. It may be located on the upper side.

In addition, a plurality of female protrusions may be formed by repeating crests and valleys on the outer surface of each of the plurality of male coupling posts, and a plurality of male protrusions may have repeated crests and troughs on the outer surface of each of the plurality of male coupling posts. is formed, and when assembling between the box culverts, at least one or more of the male coupling pillars are fitted into the space between each of the plurality of female coupling pillars, and the ridges and troughs of the female protrusions and the male protrusions may cross each other and come into contact with each other. .

The present invention is such that a watertight rubber ring having an inclined upper contact surface is installed on the male coupling part of the box culvert, so that when assembling between the box culverts, the watertight rubber ring is inclined by the contact surface of the female coupling part of the other box culverts to be coupled. Since the upper contact surface is deformed under pressure and the watertight part is in contact with the contact surface in parallel, the watertightness between the box culverts is improved.

According to the present invention, the adhesion area of the watertight rubber ring to the entire male coupling part of the box culvert in which the watertight rubber ring is installed and the female coupling part of the box culvert on one side is increased by the watertight rubber ring deformed according to the pressing force, and the watertightness is improved.

The present invention is provided with a double coupling structure in which the lower support part and the upper support part are embedded or inserted into the male coupling part of the box culvert, so that a safe and strong watertight coupling state between the box culverts can be continuously maintained for a long period of time.

According to the present invention, since the watertight part is in contact with the contact surface of the box culvert on the upper side of the support part of the watertight rubber ring, the watertight contact area is increased, and the solid bonding force between the box culverts is maintained, as well as uneven subsidence of the ground and ground disturbance in the longitudinal and lateral directions. Sufficient resistance to shear force and seismic resistance can be secured.

In the present invention, a plurality of support grooves are formed in the upper support portion of the watertight rubber ring, and a plurality of retaining projections inserted into the support grooves are formed in the watertight portion of the watertight rubber ring. By improving the support force of the watertight part that is deformed by the concavo-convex coupling of the watertight part, it prevents the watertight part from sliding, and the watertight part contacts the contact surface of the box culvert in parallel to further improve the watertightness.

The present invention can improve the watertightness through structural improvement of the watertight rubber ring, so that a high watertight bonding state can be obtained just by applying the existing assembly method without using additional work processes or parts of the box culvert. and can reduce maintenance and management costs.

The present invention is formed so that the support protrusion and the watertight groove are positioned alternately on the inclined upper contact surface of the watertight rubber ring, so that moisture flowing into the box culvert from the outside is blocked step by step, the watertightness can be further improved.

According to the present invention, the water-expandable water-expandable material is inserted and installed in the watertight groove, so that when water is introduced, the volume of the water-expandable index material expands in the space of the watertight groove to prevent water leakage or intrusion of water.

According to the present invention, since watertight rubber rings are installed at individual joints when assembling between box culverts, it is possible to facilitate earthquake-resistant design corresponding to earthquakes, and it can be used in soft ground where there is a possibility of subsidence, as well as being able to bend the box culvert. It can be installed to ensure the flexibility of the box culvert.

In the present invention, since a plurality of box culverts are continuously connected and coupled in the longitudinal direction through a watertight rubber ring, an internal joint is unnecessary when the box culvert is joined, and the elastic performance (structural function) is improved by the watertight rubber ring. It can be secured to provide an earthquake-resistant effect.

Since the present invention does not require an internal joint when joining the culvert, it can be installed in a small-diameter box (l.Omxl.Om) where internal jointing is not possible to ensure water resistance.

In the present invention, a rubber packing material is further installed in the coupling gap between the male coupling part of the box culvert and the female coupling part of another box culvert coupled thereto, so that the inflow of moisture through the coupling gap is blocked. There are many effects such as

When assembling between the box culverts of the present invention, the insertion protrusion of the rubber packing material is unevenly coupled to the female insertion groove formed in the female coupling portion of the box culvert to be fitted and the male insertion groove formed in the male coupling portion. The bonding strength is improved, and the watertightness and airtightness are increased, so that it is possible to block the inflow of moisture and foreign substances through the bonding gap.

When assembling between the box culverts of the present invention, the female coupling column included in the female coupling part of the box culvert to be fitted is fitted to the male coupling post, and as the female protrusion of the female coupling column and the male protrusion of the male coupling post are unevenly coupled, up, down, left and right The resistance to vibration is improved, and the arm assembly part, the male assembly part and the rubber packing material are made of elastic rubber to prevent damage and abrasion caused by a direct collision between the box culverts, thereby improving the durability of the box culvert.

When assembling between the box culverts of the present invention, it is possible to more effectively block the inflow of foreign substances and moisture into the bonding gap by crossing the rubber packing material, the female projections and the male projections.

1 is a view showing an overall configuration according to an embodiment of the present invention.
2 is a view showing a cross-sectional configuration of a box culvert according to an embodiment of the present invention.
3 is a view showing the configuration of a watertight rubber ring according to an embodiment of the present invention.
Figure 4 is a view showing before and after the connection of the box culvert according to an embodiment of the present invention.
5 is a view showing a modified configuration of the watertight rubber ring according to an embodiment of the present invention.
6 is a view showing a modified configuration of the watertight rubber ring according to another embodiment of the present invention.
7 is a view showing before and after connection of a box culvert according to another embodiment of the present invention.
8 is a view showing before and after connection of a box culvert according to another embodiment of the present invention.
9 is a view showing the seismic resistance (flexibility, flexibility) of the box culvert according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments disclosed below, but will be embodied in various different forms, and only these embodiments are intended to completely inform those of ordinary skill in the art to which the present invention pertains to the scope of the invention. It is provided for the purpose, and matters obvious to those of ordinary skill in the art of the present invention may be omitted. Also, the same reference numerals refer to the same members throughout each embodiment. On the other hand, each component shown in the drawings may have an exaggerated thickness or dimension for convenience of description, and does not mean that it should actually be configured in a ratio between the corresponding dimensions or components.

Figure 1 is the overall configuration according to an embodiment of the present invention, Figure 2 is a cross-sectional configuration of a box culvert according to an embodiment of the present invention, Figure 3 is the configuration of a watertight rubber ring according to an embodiment of the present invention , Figure 4 shows the connection before and after the box culvert according to an embodiment of the present invention, Figure 4 (a) shows the state before the connection between the box culverts, Figure 4 (b) shows the final connection state between the box culverts did it

The present invention provides a box culvert in which a plurality of box culverts are continuously connected and coupled in the longitudinal direction via a watertight rubber ring;

The box culvert has a female coupling part 110 at one end and a male coupling part 120 in which a watertight rubber ring 10 is installed at the other end,

The watertight rubber ring 10 includes a support part 70 that is integrated or embedded in the male coupling part, and an upper contact surface 41 that is formed to protrude to be positioned on the upper side of the support part 70 and inclined at a predetermined angle. It is configured to include a watertight portion 40 provided with,

When the female coupling part of another box culvert is connected to the male coupling part of the box culvert and coupled, the inclined upper contact surface 41 of the watertight part 40 by the contact surface 111' of the female coupling part is the contact surface of the female coupling part ( 111') and the watertight portion 40 is deformed so that the watertightness is made between the box culverts.

In the box culvert 100, a male coupling part 120 having a watertight rubber ring 10 embedded in one end of the body 150 is formed to protrude outwardly (A), and another box culvert is formed at the other end of the body part 150. The female coupling part 110 to which the male coupling part is inserted and coupled to the inside is formed in the inward direction (B).

The watertight rubber ring 10 is made of an elastic rubber material capable of resisting earthquake resistance class 1, and is formed in a ring type or a belt type with waterproofness, watertightness and durability secured.

The watertight rubber ring 10 is provided with a support portion 70 that is integrated or embedded in the male coupling portion, and an upper contact surface 41 that is formed to protrude to be positioned above the support portion 70 and inclined at a predetermined angle. It includes a watertight portion (40).

In addition, the support part 70 is formed to be positioned on both sides of the upper end of the lower support part 20, which is embedded or inserted into the male coupling part 120 of the box culvert 100, and the upper surface ( 31) includes an upper support part 30 that is embedded or inserted so as to coincide with the surface 121 of the male coupling part.

As shown in FIGS. 3 and 4 , the lower support part 20 has a wide lower part and an upper part connected to the upper part support part 30 has a relatively narrow cross-section compared to the lower part. Such a cross-sectional structure of the lower support part 20 has a relatively narrow upper part when the box culvert is connected, and even if the lower support part 20 is expanded due to the downward pressing force applied to the watertight rubber 10, This is not only to prevent separation, but also to improve the bearing capacity of the watertight rubber 10 by the wide lower part.

The upper support part 30 is integrally formed with the lower support part 20 and is formed to be located on both upper sides of the lower support part 20 . The upper support part 30 formed as described above has a width W2 wider than the width W1 of the lower support part, and the upper support part 30 having a wider width W2 as described above is a watertight part 40. By dispersing the downward pressing force transmitted from the to the lower support portion 20, the pressing force concentration to the lower support portion 20 is prevented.

In addition, when the watertight part 40 is compressed according to the connection of the box culvert, the top support part 30 is in contact with the upper surface 31 of the top support part so that the bottom surface 42 of the watertight part 40 to be compressed is in contact with the top support part. Since the joint portion of the box culvert is integrally supported from (30) to the watertight part 40, sufficient resistance to shear force and seismic resistance due to unequal subsidence of the ground and ground disturbance in the longitudinal and lateral directions is provided.

That is, the upper support part 30 has a wing shape on both upper sides of the lower support part 20 and is formed in the longitudinal direction of the watertight rubber 10, and effectively distributes the downward pressing force according to the connection of the box culvert, It provides seismic resistance by improving the elastic support between the box culverts and has the function of increasing the fixing force of the watertight rubber at the same time.

The watertight part 40 is deformed to ensure watertightness by contacting the contact surface 111' of the female coupling part of another box culvert 100' when the box culverts are connected, and the support part 70 on the upper side of the support part 70 ), and has a predetermined angle θ at the upper end so as to be inclined upward in the direction C of the body of the box culvert, and an upper contact surface 41 is formed.

That is, as shown in FIG. 3 , the watertight part 40 has a cross-sectional structure in which the upper contact surface 41 is formed to be inclined, and the upper contact surface 41 is connected between the box culverts when connecting between the box culverts. The contact surface 111' is rotated under pressure to be in close contact with the contact surface 111' in parallel with the contact surface 111'.

The watertight part 40 is pre-deformed so that the upper contact surface 41 is inclined in one direction in consideration of the amount of rubber shear deformation when the box culvert is connected. ) is rotated around the connection part (L) with the support part 70 according to the final connection of the box culvert, and at the same time, the inclined upper contact surface 41 is the box culvert by the amount of pressure deformation increased by the connection of the box culvert. Since the surface 121 of the male coupling part and the contact surface 111' of the other box culvert female coupling part are naturally deformed to keep parallel with each other and are in close contact with the contact surface 111' of the female coupling part, a watertight structure that is pushed in by conventional pressure It is possible to secure excellent watertightness and structural stability that cannot be compared with

In addition, the present invention is formed so that the upper contact surface 41 of the watertight part 40 is inclined upward in the direction of the body of the box culvert, that is, inclined upward in the direction opposite to the fitting direction of the box culvert. When connected to the female coupling part 110', it is easy to insert the box culvert male coupling part 120 in which the watertight rubber 10 is installed into the female coupling part 110' of the box culvert.

In addition, a space portion 43 is further formed in the watertight portion 40, and the space portion 43 facilitates volumetric deformation of the watertight portion 40 when a downward pressing force is generated by the connection between the box culverts. it is for

In addition, a plurality of irregularities are formed on the inclined upper contact surface 41 of the watertight portion. That is, a plurality of support protrusions 44 and watertight grooves 45 are formed on the upper contact surface 41 in the longitudinal direction of the watertight rubber 10 so as to have an uneven shape.

The support protrusion 44 has an upper end surface that is in contact with the contact surface 111' of the box culvert corresponds to the upper contact surface 41, and is in contact with the contact surface of the box culvert to maintain watertightness.

The watertight groove 45 is formed to be positioned between the support protrusions 44, that is, to have a predetermined depth from the upper contact surface 41, so that the support protrusion 44 in contact with the contact surface 111' of the box culvert is formed. Moisture passing over is temporarily stored to prevent moisture intrusion and leakage into other supporting projections.

As described above, in the present invention, when a plurality of support protrusions and watertight grooves are formed in an uneven shape on the upper contact surface, moisture flowing into the box culvert from the outside or moisture (fluid) leaking from the inside of the box culvert to the outside is supported. Since it is blocked step by step by the protrusion 44 and the watertight groove 45, the watertightness is further improved.

In addition, in the present invention, since the water-expandable stop material 50 is further inserted and installed in the water-tight groove 45, when water is introduced, the water-expansion stop material 50 expands in the water-tight groove 45, so that water leakage Or the ingress of moisture is prevented more effectively.

In the present invention configured as described above, when the box culvert is manufactured, the watertight rubber ring 10 is connected to the formwork to form the box culvert by pouring concrete, or the insertion groove 130 is formed in the male coupling part of the box culvert. After forming the box culvert, the support portion 70 of the watertight rubber ring may be fitted into the insertion groove 130 to form an integral body.

In addition, the present invention provides a rubber packing material (60) along the coupling gap 140 between the male coupling part 120 of the box culvert and the female coupling part 110' of the other box culvert coupled thereto when coupling between the box culverts. ) is installed, so that the inflow of moisture and foreign substances through the coupling gap 140 is blocked.

At this time, the rubber packing material 60 is made of an elastic rubber material capable of resisting the earthquake-resistant grade 1, and is formed in a ring type or a belt type in which waterproofness, watertightness, and durability are secured.

Figure 5 shows a modified configuration of the watertight rubber ring according to the present invention, (a) of Figure 5 is a modified configuration of the watertight rubber ring, (b) is the watertight rubber ring according to Figure 5 (a) It shows the connection status of the installed box culvert,

The watertight rubber ring (10a) includes a support part (70) that is embedded or inserted into the male coupling part and integrated with the support part (70), and an upper contact surface (41) that is formed to protrude to be positioned on the upper side of the support part (70) and inclined at a predetermined angle. Including a watertight portion 40 provided with,

On the inclined upper contact surface 41 of the watertight part, a sawtooth-shaped support protrusion 44 and a watertight groove 45 are formed to have a concave-convex shape.

The watertight rubber ring 10a formed in this way is the upper part of the watertight part 40 inclined by the contact surface 111' of the female coupling part when the female coupling part of another box culvert is connected and coupled to the male coupling part of the box culvert. The watertight part 40 is rotated and elastically deformed so that the contact surface 41 is parallel to the contact surface 111' of the female coupling part, and the support protrusion 44 formed in a sawtooth shape is as shown in FIG. Likewise, the box culvert 100 is inclined toward the body portion 150, and by blocking the inflow of moisture, the watertightness between the box culverts is further improved.

6 shows another modified configuration of the watertight rubber ring according to another embodiment of the present invention, (a) is a watertight rubber ring in a state before deformation, (b) is a watertight rubber ring in a deformed state are shown respectively.

In the watertight rubber ring 10b according to the present invention, after forming the support portion 70 as an upper support portion and a lower support portion, a plurality of support grooves 32 are spaced apart from each other on the upper surface 31 of the upper support portion, and the watertight rubber A plurality of retaining protrusions 46 inserted into the support grooves 32 are formed on the bottom surface 42 of the watertight part of the ring, and when assembling between the box culverts, the watertight part is rotated by being in contact with the female coupling part of the box culvert to be fitted. The retaining protrusion 46 and the support groove 32 are concave-convexly coupled by (40) to improve the support force of the watertight part 40, and to prevent the watertight part 40 from being pushed.

That is, when the watertight part 40 is compressed by the connection of the box culvert, the holding protrusion 46 is closely adhered into the support groove 32 by the pressing force, and is watertight with the contact surface 111' of the box culvert. While supporting the upper contact surface 41 of the rubber to be parallel, the watertight part 40 is firmly attached and fixed so that it is no longer pushed in by the force of the box culvert to which the upper contact surface 41 of the watertight rubber is connected. do.

7 is a view showing before and after connection of a box culvert according to another embodiment of the present invention. Figure 7 (a) is a cross-sectional view showing before the connection between the box culverts of another embodiment of the present invention, Figure 7 (b) is a cross-sectional view showing the connection between the box culverts of another embodiment of the present invention. 7(a) and 7(b), the rubber packing material 60 has a “T” shape, the upper part has a semicircular shape convex upward, and a plurality of insertion protrusions 61 are formed on the outer surface of the lower part. have.

In addition, when the rubber packing material 60 is installed, the insertion protrusion ( A plurality of female insertion grooves 112 are formed to be spaced apart from each other by a predetermined interval so that 61a) can be inserted.

In addition, when the rubber packing material 60 is installed, the insertion protrusion ( 61b), a plurality of male insertion grooves 122 are formed to be spaced apart from each other at regular intervals so that they can be inserted.

When assembling between the box culverts of the present invention, the insertion protrusions 61a and 61b of the rubber packing material into the female insertion groove 112 formed in the female coupling portion of the box culvert to be fitted and the male insertion groove 122 formed in the male coupling portion. is concave-convex coupled, improving the bonding force between the rubber packing material 60 and the box culverts 100 and 100 ′, and increasing watertightness and airtightness to block the inflow of moisture and foreign substances through the coupling gap 140 .

8 is a view showing before and after connection of a box culvert according to another embodiment of the present invention. Referring to FIG. 8 , when the rubber packing material 60 is installed, a plurality of female coupling pillars 113a formed to be spaced apart from each other by a predetermined interval on the surface 111a of the female coupling part in contact with the rubber packing member 60 . The arm assembly part 113 including A male assembly portion 123 including at least one male coupling pillar 123a that can be fitted into the space 160 between each of the plurality of female coupling pillars 113a is formed.

At this time, the female assembly part 113 and the male assembly part 123 are made of an elastic rubber material capable of resisting earthquake resistance grade 1, and are formed in a ring type or a belt type with waterproofness, watertightness, and durability. .

When assembling between the box culverts of the present invention, at least one of the male coupling pillars 123a is fitted into the space 160 between each of the plurality of female coupling pillars 113a, and installed along the coupling gap 140 . The rubber packing material 60 to be used is located above the female coupling post (113a') positioned at the uppermost end of the plurality of the female coupling posts (113a).

A plurality of female protrusions 114 may be repeatedly formed on the outer surface of each of the plurality of the female assembly parts 113 and the female coupling columns 113a, and the plurality of the male assembly parts 123 may be repeatedly formed. And a plurality of male projections 124 may be repeatedly formed on the outer surface of each of the male coupling pillars 123a.

When assembling between the box culverts of the present invention, the female protrusion 114 and the male protrusion ( 124), the crests and valleys intersect each other and come into contact with each other.

At this time, the insertion protrusion 61c on the bottom of the insertion protrusions 61 formed on the outer surface of the rubber packing material 60 installed along the coupling gap 140 is on the outer surface of the female coupling column 113a'. It may be unevenly coupled to the crests and valleys of the formed female protrusions 114 ′.

When assembling between the box culverts of the present invention, the female coupling post (113a) and the male coupling post (123a) included in the female coupling part of the box culvert to be fitted are fitted, and the female protrusion of the female coupling post (113a) ( As the 114) and the male protrusion 124 of the male coupling column 123a are unevenly coupled, the resistance to vertical and horizontal vibration is improved, and the female assembly part 113, the male assembly part 123 and the rubber packing material 60 ) is made of an elastic rubber material to prevent damage and abrasion due to a direct collision between the box culverts 100, so that the durability of the box culvert can be improved. In addition, the rubber packing material 60 , the female protrusion 114 , and the male protrusion 124 cross to more effectively block the inflow of foreign substances and moisture into the coupling gap 140 .

In the present invention configured as described above, since a plurality of box culverts are continuously connected and coupled in the longitudinal direction through a watertight rubber ring, as shown in FIG. By flexibly bending under subsidence, cracks do not occur in the connected box culvert structure, and deflection occurs at every segment (L=2m) connection to respond to subsidence.

In addition, in the present invention, when the watertight rubber ring bears the deformation of the box culvert, the axial force generated in the box culvert is reduced by about 1/10 when compared with the axial force generated in the PC culvert.

In addition, since the axial force generated in the box culvert is not transmitted to another box culvert adjacent thereto, but is absorbed by the watertight rubber ring, it has excellent performance with respect to seismic force and index.

The present invention is not limited to the specific preferred embodiments described above, and without departing from the gist of the present invention as claimed in the claims, anyone with ordinary skill in the art to which the invention pertains can make various modifications. Of course, such modifications are intended to be within the scope of the claims.

10,10a,10b: Watertight rubber ring 20: Bottom support part
30: upper support part 31: support groove
40: watertight part 41: upper contact surface
42: bottom surface 43: space part
44: support protrusion 45: watertight groove
46: retaining projection 50: water expansion index material
60: rubber packing material 61, 61a, 61b, 61c: insertion protrusion
70: support part 100,100': box culvert
110, 110': female coupling part 112: female insertion groove
113: arm assembly 114: female protrusion
111, 111': contact surface 120: male coupling part
121: surface 122: male insertion groove
123: male assembly 130: insertion groove
140: coupling gap 150: body part
160: interspace

Claims (6)

In the box culverts (100, 100') in which a plurality of box culverts are continuously connected and coupled in the longitudinal direction via a watertight rubber ring;
The box culvert (100, 100') is,
Female coupling portions (110, 110') provided at one end; and,
Including;;
Two box culverts male and female coupled to each other in the longitudinal direction through the watertight rubber ring 10 provided in any one of the two box culverts 100, the number of the box culverts 100 The coupling part 120 is inserted into and connected to the female coupling part 110' of the other box culvert 100' among the two box culverts,
The watertight rubber ring 10,
a support part 70 that is embedded or inserted into a part of the male coupling part 120 and integrated; and,
The watertight portion 40 is formed to protrude to be positioned on the upper side of the support portion 70 and has an upper contact surface 41 formed to be inclined at a predetermined angle;
When the female coupling part 110 ′ is male and female connected to each other and coupled to the male coupling part 120 , the inclined upper contact surface 41 of the watertight part 40 is caused by the female coupling part 110 ′. The watertight part 40 is rotated and elastically deformed so as to be in close contact with the contact surface 111' of the female coupling part 110' in parallel, so that the watertightness is made between the two box culverts 100 and 100',
Between the male coupling part 120 and the female coupling part 110', a rubber packing material 60 for blocking the intrusion of foreign substances and moisture is further installed,
The rubber packing material 60 has a “T” shape, and the upper part has a semicircular shape convex to the upper side, and a plurality of insertion protrusions 61 are formed on the outer surface of the lower part,
When the rubber packing material 60 is installed, the insertion protrusion ( A plurality of female insertion grooves 112 are formed to be spaced apart from each other at a predetermined interval so that 61) can be inserted,
When the rubber packing material 60 is installed, the insertion protrusion 61 formed on the other side of the lower portion of the rubber packing material 60 on the surface of the male coupling part 120 at the portion in contact with the rubber packing material 60 . ) is formed so that a plurality of male insertion grooves 122 are spaced apart from each other at regular intervals so that they can be inserted,
The support part 70,
a lower support part 20 embedded in or inserted into the male coupling part 120; and,
The upper support part 30, which is located on the upper side of the lower support part 20 and is embedded or inserted so that the upper surface 31 on which a plurality of support grooves 32 are formed coincides with the surface of the male coupling part 120, includes; do,
In the watertight portion 40, a plurality of retaining protrusions 46 corresponding to the support grooves 32 are formed on the bottom surface 42, and the watertightness and airtightness are improved.
According to claim 1,
Watertightness and airtightness improved earthquake-resistant box culvert, characterized in that a plurality of support protrusions 44 and watertight grooves 45 are formed in a concave-convex shape on the inclined upper contact surface 41 of the watertight portion 40.
delete According to claim 1,
When the rubber packing material 60 is installed, a plurality of female coupling columns 113a are formed on the surface of the female coupling part 110 ′ in a portion in contact with the rubber packing member 60 to be spaced apart from each other by a predetermined interval. (113);
When the rubber packing material 60 is installed, a space between each of the plurality of female coupling pillars 113a formed to be spaced apart from each other by a predetermined interval on the surface of the male coupling part 120 at the portion in contact with the rubber packing member 60 . Watertightness and airtightness improved seismic box culvert, characterized in that it comprises a male assembly portion 123 in which at least one male coupling pole (123a) that can be fitted to (160) is formed.
5. The method of claim 4,
At least one of the male coupling pillars 123a is fitted into the space 160 between each of the plurality of female coupling pillars 113a,
The rubber packing material 60 installed along the coupling gap 140 is watertight and airtight, characterized in that it is located above the female coupling post (113a') located at the uppermost end of the plurality of female coupling posts (113a). This improved shockproof box culvert.
5. The method of claim 4,
A plurality of female protrusions 114 may be repeatedly formed on the outer surface of each of the plurality of female coupling pillars 113a, and a plurality of male coupling pillars 123a may be formed on the outer surface of each of the plurality of male coupling pillars 123a. The protrusion 124 is formed by repeating the crest and the valley,
When assembling between the box culverts 100 and 100', at least one of the male coupling posts 123a is fitted into the space 160 between each of the plurality of female coupling posts 113a, and the female protrusion 114 and An earthquake-resistant box culvert with improved watertightness and airtightness, characterized in that the crest and the trough of the protrusion 124 cross and come into contact with each other.

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