KR200365985Y1 - up and down separating type pc culvert with welding connecting structure - Google Patents

Abstract

The present invention relates to a vertically divided precast concrete culvert (hereinafter referred to as culvert), which is capable of welding a welded portion at the time of installation, and in order to construct an underground structure such as a cavity, a plurality of divided into upper and lower bodies. The two culverts are arranged sideways, joining both the culvert and the culvert and between the upper and lower bodies of each culvert,

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 section 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 is, when manufactured in the factory is separated into the upper body 10 and the lower body (10a) having a front and rear and up and down joint site, but to meet the upper body and the lower body to build an underground structure such as a hollow ball And the culvert bodies (10, 10a) in which the form of the joined whole becomes a box shape;

Front and rear joining surfaces (100,100a to 100c) and vertical joining surfaces (100d and 100e) which protrude in front and rear directions and up and down directions of the body at the front and rear joining portions and the vertical joining portions of the bodies (10, 10a);

Joining space portions (40, 40a to 40e) formed at inner joining portions of the joining surfaces;

A plurality of welded reinforcing bars (60, 60a to 60e) in which the reinforcing bars arranged in the body are exposed by a predetermined length to the joining spaces (40, 40a to 40e);

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

A water expansion index member (30,30a) inserted into the index member insertion groove;

A plurality of connecting rings (90, 90a) mounted to the upper slab and the lower slab so that the culvert can be easily fastened to the crane when moving and installing the culvert;

A plurality of joining strands 101 for tightly fixing the front and rear joint surfaces 100, 100a to 100c to front and rear joint surfaces of adjacent culverts;

It is characterized in that the plurality of insert holes (70, 70a ~ 70c) and the fixing holes (80, 80a) are to be formed in the corners of the upper body and the lower body to insert and fasten the strand wire (101) .

Description

Up and down separating type 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, To join the culverts,

At this time, the upper and lower joining portions where the upper body and the lower body are joined butt and the front and rear joining portions joined butt between adjacent culverts are welded, and then the non-shrink cement mortar is formed in the joining space formed at the joining portion. By filling a grout, such as to consolidate the entire underground structure very firmly,

Then, the present invention relates to a vertically separated PC culvert having a welded joint structure in which a crack and a leakage phenomenon do not occur even when a cross section force acts on the joint site due to the floating settlement and the load.

Typically used for the construction of underground structures such as waterways, passages and cavities, the split-up culverts are manufactured in large quantities at the factory and then moved to the site as many as necessary, arranged horizontally, between and between the upper and lower bodies. It is possible to bond between culverts and culverts.

However, a structure in which a plurality of culverts are joined laterally long 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 problems, welds 50 to the joint portions 100, 100a to 100e of the culverts to be installed, and then fills the grout in the joint space portions 40, 40a to 40e. By plurally unifying the entire structure of a plurality of culverts joined laterally,

After that, even if the cross-sectional force acts on the joints 100, 100a to 100e of the constructed structure, it is an object to provide a vertical split PC culvert having a welded joint structure so that cracks and leaks do not occur at the joints.

And it is another purpose to separate the body (10, 10a) to the upper and lower parts to facilitate the manufacture and movement of heavy culvert.

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

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

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

Figure 5 is a side view showing an embodiment of the present invention

Figure 6 is a bottom view of the upper body showing an embodiment of the present invention

7 is a plan view of a lower body showing an embodiment of the present invention

8a to 8d is a perspective view showing an embodiment of the use process of the present invention

9a to 9c is a partial cross-sectional view of the junction showing an example of the use process of the present invention

10a to 10c are partial longitudinal cross-sectional views of the joint site showing the bonding process between the upper body and the lower body;

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

10,10a: Body (upper and lower body) 20,20a ~ 20e: Index insert groove

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

30,30a: Index material 40,40a ~ 40e: junction space part

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

50,50a ~ 50e: welded part (joint) 60,60a ~ 60e: welded reinforcing bar

70,70a ~ 70c: Insert hole for inserting stranded wire

80,80a: strand anchoring hole 90,90a: link ring

100,100a ~ 100e: joining surface (bonding site) 101: stranded wire for joining

102: finish mortar 103: formwork

In order to achieve the above object, the present invention is separated into an upper body and a lower body having front and rear and upper and lower joint portions at the time of manufacturing at the factory, but the upper body and the lower body are joined together butt to build an underground structure such as a hollow ball. A culvert body, in which the joined whole form becomes a box shape;

A front and rear joint surface and an upper and lower joint surface protruding from the front and rear joint portions and the vertical joint portions of the body in the front and rear directions and the vertical direction of the body;

A joining space portion formed at an inner joining portion of the joining surface;

A plurality of welded reinforcing bars, wherein the reinforcing bars arranged in the body are exposed to the joint space by a predetermined length;

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 connecting rings mounted on the upper slab and the lower slab so that the culvert can be easily fastened to the crane when moving and installing 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;

Provides a vertically separated PC culvert having a welded joint structure, characterized in that a plurality of insert holes and fixing holes are formed in the corners of the upper body and the lower body to insert and fasten the strand.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 10.

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,

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

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

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

Figure 6 is a bottom view of the upper body showing an embodiment of the present invention,

7 is a plan view of a lower body showing an embodiment of the present invention,

8a to 8d is a perspective view showing an embodiment of the use process of the present invention,

Figure 8a is a perspective view showing the listed state of the culvert separated into an upper body and a lower body

Figure 8b is a perspective view showing the listed state of the culvert made by tightly fastening the joining strand to the insert hole of the lower body, the tight fixing between the lower body,

Figure 8c is a perspective view showing a state in which the close fixing is made between the listed culverts by inserting and fastening the joining strand in the insert hole of the upper body while seating the upper body on the lower body,

8D is a perspective view of a grout and a finishing mortar filled in a joining space and a strand anchoring hole, etc. after welding a joining portion between adjacent culverts and a joining portion between the upper body and the lower body. A perspective view showing the state.

9a to 9c is a partial cross-sectional view of the junction space portion showing an example of the use process of the present invention,

9A is a partial cross-sectional view of a portion of the junction space showing the state immediately before bonding,

9B is a partial cross sectional view of the portion of the joint space showing the state in which the weld is then joined;

9C is a partial cross-sectional view of a portion of the junction space where the open portion is closed with formwork and then filled with grout, such as non-condensed cement mortar,

10a to 10c are partial longitudinal cross-sectional views of a portion of the joint space showing the bonding process between the upper body and the lower body,

10A is a partial longitudinal cross-sectional view of a portion of the junction space showing a state separated into an upper body and a lower body,

10B is a partial longitudinal cross-sectional view of a portion of the joint space portion in which the upper body is seated and fixed and welded on top of the lower body;

10C is a partial longitudinal cross-sectional view of a portion of the junction space in which the open portion is closed with formwork and then filled with grout, such as non-condensed cement mortar, FIG.

In the embodiment of the present invention, at the time of manufacturing at the factory is separated into the upper body 10 and the lower body (10a) having a front and rear and up and down joints, the upper body and the lower body in order to build an underground structure such as a hollow ball When joined together, but the culvert body (10, 10a) of the shape of the joined whole box shape;

Front and rear joining surfaces (100,100a to 100c) and vertical joining surfaces (100d and 100e) which protrude in front and rear directions and up and down directions of the body at the front and rear joining portions and the vertical joining portions of the bodies (10, 10a);

Joining space portions 40, 40a to 40e formed at inner joining portions of the joining surfaces;

A plurality of welded reinforcing bars (60, 60a to 60e) in which the reinforcing bars arranged in the body are exposed by a predetermined length to the joining spaces (40, 40a to 40e);

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

A water expansion index member (30,30a) inserted into the index member insertion groove;

A plurality of connecting rings (90, 90a) mounted to the upper slab and the lower slab so that the culvert can be easily fastened to the crane when moving and installing the culvert;

A plurality of joining strands 101 for tightly fixing the front and rear joint surfaces 100, 100a to 100c to front and rear joint surfaces of adjacent culverts;

A plurality of insert holes (70, 70a ~ 70c) and the fixing holes (80, 80a) are to be formed in the corner portion of the upper body and the lower body to insert and fasten the strand wire (101).

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

The bodies 10, 10a; Separated into the upper body 10 and the lower body (10a) to facilitate the manufacture and movement of large and heavy culvert, it can be produced in various sizes and methods to be used in the construction of underground structures, such as various waterways, passages and joints. And the pretensioning method can be selected as a production method.

The junction site; When joining between the upper body 10 and the lower body 10a of the culvert and between the culvert and the culvert, the portion to be joined or joined, that is, the front and rear cross sections of the body, or Joining space in the joint surface (100, 100a ~ 100e) formed in the front and rear and up and down direction around the cross-section and the joining space (40, 40a ~ 40e) and the body formed inside the joining surface It includes up to the welded joint reinforcing bars 60, 60a to 60e exposed to the parts 40, 40a to 40e.

Front and rear and top and bottom joint surface (100, 100a ~ 100e); In front and rear and top and bottom joining portions of the upper and lower body bodies 10 and 10a, protrusions are formed in the front and rear and up and down directions of the bodies 10 and 10a around and inside the joining portions. Therefore, when the joining surface is joined butt to an adjacent joining surface, joining space portions 40, 40a to 40e having a space of a constant width are formed in the joining surface between the joining surface and the joining surface.

The junction space portions 40, 40a to 40e; In order to join the bodies 10, 10a, which are separated into the upper body 10 and the lower body 10a, with the adjacent culvert, the joint surfaces 100a, 100c of the lower body 10a are first joined to the joint surface of the adjacent culvert. When tightly fixed, a space of a predetermined width is formed at the junction between the lower body 10a and the adjacent culvert, and the space thus formed becomes the junction spaces 40a and 40c.

And when the upper body 10 is seated and fixed to the upper end of the lower body (10a), the junction between the upper body and the adjacent culvert and the junction between the upper body 10 and the lower body (10a) (100d ~ 100e) The space is also formed, and the space thus formed is also the junction space portions 40, 40b, 40d, and 40e.

Therefore, after the welding work of the reinforcing bar 50 is made in the joining space part, the open portions of the joining space parts 40, 40a to 40e are blocked by the form 103, and the grout 42 at the grout inlet 41 is formed. If the injection, the grout is injected is to fill the junction space (40, 40a ~ 40e).

Reinforcing bars 60, 60a to 60e; Reinforcing bars in the upper and lower slabs of the upper and lower bodies 10 and 10a and reinforcing bars on both sidewalls are exposed to the joint space portions 40, 40a and 40e by a predetermined length, and adjacent culverts are formed depending on the thickness and the number of the bars. Since the bond strength and the bond strength between the upper body and the lower body is determined, the thickness and number of the reinforcing bar may be determined in consideration of the size and use of the culvert.

Index insert insert grooves (20, 20a ~ 20e); When a plurality of culverts are horizontally arranged and joined between the culverts and the culverts by welding 50 joints, it is possible to construct a very firmly integrated underground structure.

However, cracks and leaks may occur at the joints (100,100a ~ 100e) due to shrinkage and expansion of the structure due to loads, floating settlements, and temperature changes.

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

And permeable waterproofing agents 21, 21a to 21e are applied to the long and concave surfaces of the water insert grooves 20, 20a to 20e, and the permeable waterproofing agents 21, 21a to 21e are insertion grooves 20, 20a to 20e) forms a thin and smooth film (21, 21a to 21e) on the rough concrete surface forming the joint surface (100, 100a ~ 100e), penetrates into the concrete surface layer and then hardens (22, 22a to 22e).

Therefore, the water repellent insert grooves 20, 20a to 20e are formed on the rough concrete surfaces of the water-expandable water retardant inserts 30 and 30a and the insertion grooves 20 and 20a to 20e inserted therein. 21e) makes contact without voids,

It is possible to prevent the leakage caused through the minute gap between the rough concrete surface of the conventional insertion groove (20, 20a ~ 20e) and the water expansion index material (30, 30a), as well as the concrete surface layer (22, 22a ~ 22e) The waterproofing agent penetrates into the concrete can prevent the permeation of the concrete surface layer.

The water expansion index members 30 and 30a; When water enters through the crack at the junction, the volume expands as it reacts with the incoming water. And the expanded index material (30, 30a) to prevent the cracks in 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.

Linking rings 90 and 90a; When moving the body (10, 10a), a plurality of connecting rings (90, 90a) are mounted on the upper and lower slabs so that they can be easily fastened to equipment such as a crane.

Therefore, the present invention has the effect of preventing cracks and leaks that occur at the conventional joint site because a plurality of culverts are joined to each other by welding joints.

Claims (1)

Front and rear and top and bottom joint surface protruding in the front and rear and up and down direction of the body, connecting ring mounted on the slab, insert hole for inserting strand wire, insert insert grooves coated with waterproofing material, fixing hole for fastening strand wire In the precast concrete culvert is formed and separated into an upper body and a lower body, Front and rear and upper and lower joining space portions 40, which are formed at the inner joining portions of the joining surfaces, by joining surfaces 100, 100a to 100e protruding from the front and back and upper and lower joining portions of the body in the front, rear, and up and down directions of the body. Prefabricated PC culvert having a welded joint structure, characterized in that consisting of 40a ~ 40e).