KR200365986Y1 - prefabricated pc culvert with welding connecting structure - Google Patents

Abstract

The present invention relates to a precast concrete culvert (hereinafter referred to as culvert), which is capable of welding a joint at the time of installation, and in order to construct an underground structure such as a pit, a plurality of culverts are arranged horizontally along each side. And the culvert between

At this time, after all the welded joints are welded, the grout is filled into the voids of the joints, so that even if the cross-sectional force acts on the joints due to the floating settlement and the load, the cracks and leaks do not occur at the joints.

The present invention for this purpose, and the box-shaped body 10 is formed in the inner space to be used for the construction of underground structures such as hollow spheres and waterways and passages;

Front and rear joint surfaces (100, 100a) and protruding formed in the front and rear direction of the body at the front and rear joint portion of the body and

Grout filling parts (40, 40a) formed in the inner joining portion of the joining surface;

A plurality of welding holes (50, 50a) formed in the front and rear joint portions of the body to facilitate the welding joint operation between adjacent culverts;

A plurality of welded reinforcing bars 60 and 60a in which the reinforcing bars in the body 10 are exposed by a predetermined length into each of the welding holes 50 and 50a;

An index member inserting groove (20, 20a) formed on the joining surface in a long and concave shape, on which a permeable waterproofing agent (21, 21a) is applied;

A water-expandable index member 30 inserted into the index member insertion grooves 20 and 20a;

A plurality of connecting hooks 90 mounted on the upper slab of the body so as to easily fasten to the crane when moving the culvert;

A plurality of joining strands 102 for tightly fixing the front and rear joint surfaces to front and rear joint surfaces of adjacent culverts;

A plurality of insert holes (70, 70a) and the fixing hole 80 is to be formed in the corner portion of the body to insert and fasten the strand wire (102).

Description

Prefabricated pc culvert with welding connecting structure

The present invention relates to precast concrete culverts capable of welding joints. More specifically, in order to construct underground structures such as various waterways, passages and cavities, a plurality of culverts are arranged horizontally, The culvert and culvert

At this time, all the joints joined together by butt joints between adjacent culverts are welded, and the grout fillings formed in the joints and the welding holes are filled in grouts such as non-condensed cement mortar, so that the entire underground structure is very large. Integrate firmly,

Then, the present invention relates to a prefabricated PC culvert having a welded joint structure such that cracking and leakage do not occur at the joint even when the cross section force acts on the joint due to the floating settlement and the load.

In general, culverts used for constructing various waterways, passages, and cavities can be manufactured in large quantities at a factory, and then, as necessary, the culverts can be connected to each culvert and culverts while being arranged horizontally and horizontally.

However, the underground structure, in which a plurality of culverts are joined laterally, has a problem that cracking and leaking occur easily at the joint site when the cross-sectional force acts on the joint site due to the floating settlement and the loading load.

The present invention, which was devised to solve the above-mentioned conventional problems, welds the joint part of the culvert to be installed, and then fills the grout 42 with the grout filling part and the welding hole, thereby solidifying the entire underground structure. Let's

It is an object of the present invention to provide a prefabricated PC culvert having a welded joint structure such that cracks and leaks do not occur at the joints 100 and 100a even when a cross-sectional force is applied to the joints of the underground structures.

1 is a perspective view in a front direction showing an embodiment of the present invention

2 is a front view showing an embodiment of the present invention

Figure 3 is a perspective view in the back direction showing an embodiment of the present invention

4 is a rear view showing an embodiment of the present invention

5 is a perspective view showing another embodiment of the present invention

Figure 6 is a perspective view showing another embodiment of the present invention

7 is a side view showing an embodiment of the present invention

8 is a plan view showing an embodiment of the present invention

9a to 9d are perspective views showing the use process of the present invention according to the accompanying Figure 5

10a to 10d is a longitudinal sectional view showing an example of the use process of the present invention

11a to 11c is a partial cross-sectional view of the welding hole portion showing an example of the use process of the present invention

12a to 12c is a partial cross-sectional view of the grout charging portion showing an example of the use process of the present invention

<Description of the code | symbol about the main part of drawing>

10: body 20, 20a: index insert groove

21,21a: Waterproof coating 22,22a: Waterproofing penetration part (surface layer)

30: water-expandable rubber index material 40, 40a: grout charging portion

41: grout injection port 42: injected (cured) grout

50,50a: Welding hole 51: Welding part (joint)

60,60a: Rebar for welding joint 70,70a: Insert hole for inserting stranded wire

80: strand wire anchoring hole 90: connecting ring

100,100a: Bonding surface (bonding site) 101: Finish mortar

102: stranded wire for bonding 103: formwork

The present invention for achieving the above object, the box-shaped body and the inner space is formed to be used in the construction of underground structures, such as hollow spheres;

The front and rear joint surface protruded in the front and rear direction of the body at the front and rear joint portion of the body and

A grout filling portion formed at the inner bonding portion of the bonding surface;

A plurality of welding holes formed in front and rear joint portions of the body to easily perform a welding joint operation between adjacent culverts;

A plurality of welded reinforcing bars, wherein the reinforcing bars in the body are exposed by a predetermined length to each of the welding holes;

A water receptacle insertion groove which is formed in the joining surface in a long and concave shape and has a permeable waterproofing agent applied to the concave inner surface thereof;

A water expansion index member inserted into the index member inserting groove;

A plurality of linking rings mounted on the upper slab of the body to easily engage the crane when moving the culvert;

A plurality of joining strands for fastening the front and back joint surfaces to the front and rear joint surfaces of adjacent culverts;

It provides a prefabricated PC culvert having a welded joint structure, characterized in that a plurality of insert holes and fixing holes are formed in the corner portion of the body to insert and fasten the stranded wire.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 12.

1 is a perspective view in a front direction showing an embodiment of the present invention,

2 is a front view showing an embodiment of the present invention,

Figure 3 is a perspective view in the back direction showing an embodiment of the present invention,

4 is a rear view showing an embodiment of the present invention,

5 is a perspective view showing another embodiment of the present invention,

6 is a perspective view showing another embodiment of the present invention,

7 is a side view showing an embodiment of the present invention,

8 is a plan view showing an embodiment of the present invention,

9A to 9D are perspective views illustrating a process of using the present invention according to the attached FIG. 5.

9A is a perspective view showing the listed states of the culvert;

Figure 9b is a perspective view showing the listed state of the culvert is inserted with a joining strand wire in the insert hole,

9C is a perspective view showing a tightly fixed state of the listed culverts,

FIG. 9D is a perspective view of a grout and a finishing mortar filled in the welding hole and the strand anchoring hole after welding between the culvert and the culvert, showing a state of joining and finishing filling the culvert at the end of the structure.

10a to 10d is a longitudinal sectional view showing an embodiment of the use process of the present invention,

10A is a longitudinal sectional view showing the listed states of culverts in which a joining strand is inserted into an insert hole,

10B is a longitudinal sectional view showing the tightly fixed state of the listed culverts,

10C is a longitudinal sectional view showing a state in which overlap welding joints are made between tightly fixed culverts,

FIG. 10D is a longitudinal cross-sectional view of the welding hole and the grout filling part formed by forming a mold and then filling the welding hole and grout filling part with grout such as non-condensed cement mortar to complete the bonding between the culverts; FIG.

11a to 11c is a partial cross-sectional view of the welding hole portion showing an example of the use process of the present invention,

11A is a partial cross-sectional view of a portion of a welding hole showing a state just before joining,

FIG. 11B is a partial cross-sectional view of a portion of a welding hole showing a state in which welding is performed after being joined;

FIG. 11C is a partial cross sectional view of a welded hole portion filled with grout, such as non-constricted cement mortar, with the open portion closed by a formwork;

12a to 12c is a partial cross-sectional view of the grout charging portion showing an example of the use process of the present invention,

12A is a partial cross sectional view of the grout live part showing a state immediately before bonding;

12B is a partial cross-sectional view of the grout live part showing the bonded state,

12C is a partial cross-sectional view of a grout filled portion filled with grout, such as non-constricted cement mortar, with the open portion closed by a formwork;

Embodiments of the present invention, and the box-shaped body 10 is formed in the inner space to be used in the construction of structures, such as cavities and waterways and passages;

Front and rear joint surfaces (100, 100a) and protruded in the front and rear direction of the body at the front and rear joint portion of the body and

Grout filling parts (40, 40a) formed in the inner joining portion of the joining surface;

A plurality of welding holes (50, 50a) formed in the front and rear joint portions of the body to facilitate the welding joint operation between adjacent culverts;

A plurality of welded reinforcing bars 60 and 60a in which the reinforcing bars in the body 10 are exposed by a predetermined length into each of the welding holes 50 and 50a;

An index member inserting groove (20, 20a) formed on the joining surface in a long and concave shape, on which a permeable waterproofing agent (21, 21a) is applied;

A water-expandable index member 30 inserted into the index member insertion grooves 20 and 20a;

A plurality of connecting hooks 90 mounted on the upper slab of the body so as to easily fasten to the crane when moving the culvert;

A plurality of joining strands 102 for tightly fixing the front and rear joint surfaces to front and rear joint surfaces of adjacent culverts;

A plurality of insert holes (70, 70a) and the fixing hole 80 is to be formed in the corner portion of the body to insert and fasten the strand wire (102).

When described in more detail with respect to the present invention configured as described above are as follows.

Body 10; It can be produced in various scales and ways to be used for the construction of underground structures such as waterways, passageways, and community areas. And the pretensioning method can be selected as a production method.

The junction site; When the culvert and the culvert are joined, it refers to the part to be joined or the bonded part, that is, the front and rear cross-sections of the body. It includes the grout filling portion (40, 40a) and the welding holes (50, 50a) formed on the inside.

Joining surfaces 100, 100a; At the front and rear joint site of the body, it protrudes in the front and rear direction of the body 10 along the circumference of the joint site. Therefore, when the culvert and the culvert are joined, the joint surface (100, 100a) of the culvert is bonded to the joint surface of the adjacent culvert, but the grout filling part having a constant width space between the junction part inside the joint surface, that is, the culvert and the culvert Will be formed.

Grout charging section (40, 40a) is; When the bonding surface of the culvert is closely fixed to the bonding surface of the adjacent culvert, a space having a predetermined width is formed between the inner surface of the bonding surface, that is, the culvert and the culvert, and the space thus formed is the grout filling part 40, 40a.

Therefore, after the welding joint operation of the reinforcing bar is made in the welding holes 50 and 50a, the grout filling parts 40 and 40a and the open portions of the welding holes 50 and 50a are blocked by the form 103, and the grout inlet is When the grout 42 is injected at 41, the grout is injected to all the welding holes 50 and 50a while filling the grout filling portions 40 and 40a, that is, the joints between the culvert and the culvert. It will be charged.

Welding holes 50 and 50a; It is formed at the junction of the culvert to facilitate welding of the culverts to be installed, the size, shape and number of the welding holes (50, 50a) is the size and use of the culvert, and the rebars to be overlap weld (51) It may vary depending on the thickness and the number of (60, 60a).

Reinforcing bars 60, 60a; Reinforcing bars in the body are exposed by a certain length into the welding holes 50 and 50a, and the bonding strength with adjacent culverts is determined according to the thickness and number of rebars. The thickness and number of reinforcing bars can be determined.

The index insert insertion grooves 20 and 20a are: When the joints 100 and 100a are welded together while the plurality of culverts are arranged horizontally, a very firmly integrated underground structure can be constructed.

However, cracks and leaks may occur at the joints (100, 100a) due to the contraction and expansion of the structure due to the loading load, floating settlement, and temperature change.

Therefore, in preparation for the cracks and leaks that may occur at the joint site, the long and concave index member insertion grooves 20 and 20a are formed along the joint surface to insert the water-expandable index material 30 into the joint site. It is.

And the long and concave surface of the index insert insert groove is coated with a permeable waterproofing agent (21, 21a), the permeable waterproofing agent (21, 21a) is rough to form the insertion groove (20, 20a) and the joint surface (100, 100a) A thin and smooth film (21, 21a) is formed on the concrete surface, penetrates into the concrete surface layer, and then hardens (22, 22a).

Therefore, the water repellent insert grooves 20 and 20a allow the waterproof coating 21 and 21a to contact the water-expandable exponent 30 inserted therein and the rough concrete surface of the insertion grooves 20 and 20a without voids. ,

It is possible to prevent the leakage caused by the micro-gap between the rough concrete surface and the water expansion index 30 of the conventional insertion groove (20, 20a), as well as the waterproofing agent penetrating the concrete surface layer to the permeability of the concrete surface layer It can be prevented.

The water expansion index material 30 is; When water enters through the crack at the junction, the volume expands as it reacts with the incoming water. In addition, the expanded index material prevents the crack at the joint site to prevent leakage at the joint site.

However, depending on the use and size of the structure to be constructed, not only the water-expandable rubber index material but also other index materials may be used.

Link ring 90; When the body 10 is moved, a plurality of connecting rings 90 are mounted on the upper slab so that they can be easily fastened to heavy equipment such as a crane.

Therefore, the present invention has the effect that it is possible to prevent the cracks and leaks that occur at the conventional joint site because the plurality of culverts are joined to the welding joint very firmly.

Claims (4)

In the box-shaped precast concrete culvert where the insert hole and the fixing hole are formed at the corner of the body to insert and fasten the strand, and the upper slab is equipped with a plurality of connecting rings. Bonding surfaces (100, 100a) protruding in the front and rear direction of the body at the front and rear joint portion; An index member insertion groove (20, 20a) that is concave and elongated along the joining surfaces (100, 100a); Prefabricated PC culvert having a welded joint structure, characterized in that it consists of a plurality of welding holes (50, 50a) formed in the front and rear joints to facilitate the welding (51) operations made at the joints. The method of claim 1, Bonding surfaces (100, 100a) which are formed to protrude in the front and rear direction of the body at the bonding site; Weld joint structure characterized in that the grout filling portions 40 and 40a are formed in the inner joining portion of the joining surface by a joining surface protruding in the front and rear direction of the body 10 around the front and back joining portion. PC culvert having a. The method of claim 1, The water receptacle insertion grooves 20 and 20a, which are formed concave and long on the front and rear joint surfaces, A prefabricated PC culvert having a welded joint structure characterized in that a permeable waterproofing agent is applied (21, 21a) and permeate (22, 22a) in the front and rear joint surfaces (100, 100a) and the index insert. The method of claim 1, The plurality of welding holes 50 and 50a formed at the front and rear joint portions to easily perform the welding joint operation may include A prefabricated PC culvert having a welded joint structure, characterized in that the reinforcing bars arranged in the body are composed of welded reinforcing bars (60, 60a) exposed by a predetermined length to the welding holes (50, 50a).