JPH08333797A - Concrete block connecting construction method specifying leakage plage easily and box-like concrete block used therefor - Google Patents

Abstract

PURPOSE: To easily specify a leakage place in a construction such as a common ditch constructed by connecting vertically bisected type tubular concrete blocks in regular succession. CONSTITUTION: A vertically bisected type tubular concrete block formed of an upper block 2 and a lower block 3 is used. At the time of connecting the tubular blocks to each other, cavities are formed at the meeting parts of vertical and lateral blocks, and water swelling water stop material 21 is filled in the cavities. Belt-like elastic sealants 12 are interposed between the vertical connecting faces and between the longitudinal connecting faces, in a continuous state so as to hold the water stop material 21 from both inner and outer sides, and a passage is formed between the inner and outer belt-like elastic sealants 12, 12. When the water stop material is swollen by water leakage flowing into the passage, the passage is shut off at meeting parts of the blocks by the swollen water stop material 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block connecting method for facilitating the identification of a water leak point in a joint groove, for example, which is constructed by sequentially connecting two upper and lower split type concrete cylindrical blocks. The present invention also relates to a concrete tubular block used therefor.

[0002]

2. Description of the Related Art The conventional construction method of sequentially connecting concrete rectangular cylinder blocks a as shown in FIG. 12, for example, to construct a large common groove b, for example, is to construct an integral large cylinder block. Since it is difficult to carry it to the site, a construction method has been adopted in which it is divided into upper and lower parts, transported and combined at the construction site. At the time of assembling and connecting these rectangular cylinder blocks, as shown in FIG. 13, between the upper end connecting surface d of the lower block c and the lower end connecting surface f of the upper block e, and as shown in FIG. A band-shaped elastic sealing material i such as butyl rubber is interposed between the connecting surfaces g and g of the adjacent lower blocks c and c and between the connecting surfaces h and h of the adjacent upper blocks e and e in a compressed state. The blocks and the blocks before and after the blocks adjacent to each other were connected by using a connection fitting (not shown).

At this time, the manner in which the band-shaped elastic sealing material is interposed in the connecting portion is, as shown in FIG. 13, positioned on the inner edge side and the outer edge side of the upper end connecting surface d of the lower block c. The strip-shaped elastic sealing materials i, i are adhered in parallel in a continuous state from the end to the end. Also, as shown in FIGS. 12 and 14, one of the connection surfaces h, h of the lower block c and the upper block e is located on the inner edge side and the outer edge side thereof, and the edge of the connection surface is Band-shaped elastic sealing materials i, i are stuck in parallel in a U-shaped bent state that continues to the end. In addition, the reason why the two sealing materials are arranged in parallel with each other in this manner is to ensure the water stop of the connecting portion. Then, the lower block c and the upper block e are
A large rectangular tube block a as shown in FIG. 12 can be formed by abutting and connecting the connecting surfaces d and f at the upper and lower ends, and the strip-shaped elastic seal material i is parallel between the upper and lower blocks in a compressed state. (FIG. 13), and the band-shaped elastic sealing material i is arranged in an annular shape at a portion of one end surface of the rectangular tube block near the inner and outer edges. In this case, a relatively short elastic seal piece has been stuck along the outer edge of the connecting portion of the band-shaped elastic sealing material in order to prevent water leakage from the connecting portion as much as possible.

The connecting surface on the left side of the thus-assembled rectangular tube block (the connecting surface to which the band-shaped elastic sealing material is adhered) is connected to the connecting surface on the right side of each of the other cylindrical blocks having the same structure (the band-shaped elastic member). The joint surfaces (on which the sealing material is not adhered) are butted against each other, and the band-shaped elastic sealing material is put into a compressed state to connect the rectangular tube blocks to each other, and the connection is repeated to construct the joint groove.

[0005]

In the joint groove constructed by sequentially connecting the two-division type rectangular tube blocks, the arrangement of the band-shaped elastic sealing material is shown in FIG. 13 which extends in the longitudinal direction of the joint groove. Flow path k shown in FIGS. 12 and 14
The flow path m extending in the circumferential direction of the rectangular tube block shown in FIG.

Therefore, in the joint groove constructed as described above, the connecting portion between the upper block e and the lower block c and the connecting portion between the rectangular tube blocks a and a are the inner and outer band-shaped elastic sealing materials i, At first glance, it looks as if water in the common groove is surely stopped because the water is double-stopped by i.

However, when the band-shaped elastic sealing material is adhered, there is a possibility that a construction error such as an elastic stretching of the band-shaped elastic sealing material or adhesion failure due to foreign matter intervening on the attaching surface may occur. There is. For this reason, although the inner and outer water-stopping treatments are performed, there is a risk that water leaks at the connecting portion. Now, it is assumed that water has entered the horizontal flow path k (FIG. 13) or the circumferential flow path m (FIG. 14) by breaking the outer seal portion. Since such horizontal flow path k is continuous in the lengthwise direction of the common groove, such invading water runs along the flow path to stop the water between the upper and lower blocks or between the front and rear blocks inside the common groove. Water leaks at defective points.

[0008] In such repair of water leakage, if a water leakage point of the outer seal portion can be specified, an injection hole p communicating with the flow path is provided as shown in FIG. It can be repaired by filling with a liquid resin such as a foamable liquid polyurethane resin. However, as described above, since the water that has flowed into the horizontal flow path runs along the flow path, it was practically impossible to specify the leak location of the outer seal portion.

Therefore, in the conventional repair, it is necessary to fill the entirety of the flow path in the horizontal direction with the foamable resin liquid, which requires enormous repair costs. For this reason, there was a case where it was unavoidable that the leaked portion was only repaired urgently. However, since the leaked portion of the outer seal portion was not repaired, there was a possibility that water leaked again and again.

An object of the present invention is to provide a method of connecting concrete blocks, which makes it easy to specify a leaking point in such a case and enables reliable repair. It is another object of the present invention to provide a concrete block suitable for use in such a connecting method.

[0011]

In order to confront the above problems, the present invention employs the following means. That is, the connecting method according to the present invention is a connecting method for connecting the upper and lower two-divided concrete tubular blocks with the front and rear ends open,
In each of the upper block and the lower block, a widthwise intermediate portion of each corner portion where a horizontal connecting surface and a vertical connecting surface intersect each other is a cutout surface with a corner cut off. When connecting the cylindrical blocks having such a configuration with the connecting surfaces at the front and rear ends being in contact with each other, they are surrounded by four cutout surfaces formed at the meeting portion between the adjacent lower block and the adjacent upper block. The water-swellable water-stopping material is filled in the voids. Further, between the upper and lower adjacent connecting surfaces and between the front and rear adjacent connecting surfaces, a band-like elastic sealing material is interposed so as to sandwich the cutout surface from both the inner and outer sides and in a continuous state from one end of the connecting surface to the other. A flow path through which water can flow is formed between the inner and outer belt-shaped elastic seal materials.

The concrete tubular block according to the present invention, which can be suitably used in the above-mentioned connecting method, is of an upper and lower two-part type having open front and rear ends, and each of the upper block and the lower block is horizontal. The widthwise intermediate portion of each corner where the connecting surface and the perpendicular connecting surface intersect is formed as a cut-out surface with a sharpened corner. As one of more specific embodiments, the upper block and the lower block are both formed in a U-shaped cross section (the U-shape is a concept including a U-shape in the present invention), and is formed horizontally. The widthwise intermediate portion of each corner where the perfect connecting surface and the perpendicular connecting surface intersect is formed as a cut-out surface with a corner cut. In the other, the lower block is formed in a U-shape in cross section, while the upper block is formed in a plate shape covering the upper end opening of the lower block, and both the horizontal connecting surface and the vertical connecting surface intersect. The middle portion in the width direction of each corner portion may be a cut-out surface with a corner cut. In the other, the upper block is formed in a U-shape in cross section, while the lower block is formed in a plate shape covering the lower end opening of the upper block, and both the horizontal connecting surface and the vertical connecting surface intersect. An example in which a widthwise intermediate portion of each corner portion is cut off with a corner cut off can be given.

[0013]

When the connecting method according to the present invention is used, however, water leaks at the outer seal portion, and the horizontal flow path between the lower block and the upper block or the circumferential direction formed at the connecting portion of the cylindrical block is formed. When water flows into the flow path, when the water comes into contact with the static material filled in the gap, the static material swells in water and is restrained by the gap in a state where the pressure is increased. Become. As a result, the horizontal flow path and the circumferential flow path are blocked by the water-swelled water-blocking substance.

As a result, when water leakage occurs inside the structure, the water leakage can be identified as being related to the cylindrical block constituting that part (the leakage point is identified within the length of the cylindrical block). Therefore, it is possible to reliably perform the repair by providing an injection hole communicating with the flow path in the vicinity of the leaking point and injecting a foamable resin liquid from the injection hole.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a concrete-made tubular block (square tubular block) 1 of the upper and lower halves used in the present invention, and FIG. 2 is an exploded perspective view of a lower block 2 and an upper block 3. .

The lower block 2 has a U-shape in which standing walls 6, 6 are erected at opposite ends of a bottom surface 5, and each corner where a horizontal connecting surface 7 and a vertical connecting surface 9 intersect. An intermediate portion in the width direction of the portion is a cutout surface 10 which is obliquely angled. And on the horizontal connecting surface 7 of the lower block 2,
The band-shaped elastic sealing material 12 is sandwiched between the notch surfaces 10 from both the inner and outer sides and is continuous from end to end of the connecting surface 7.
Are attached substantially in parallel. Also, one of the right and left vertical connecting surfaces 9, 9 a has a U-shaped bent form continuous from one end to the other of the connecting surface 11 so as to sandwich the cutout surfaces 10 from inside and outside. The band-like elastic sealing materials 12 are adhered substantially in parallel.

On the other hand, the upper block 3 has an inverted U-shape in which hanging walls 15 and 15 are provided so as to face each other at both ends of the top surface portion 13, and a horizontal connecting surface 7 and a vertical connecting surface 9 are formed. A widthwise intermediate portion of each of the intersecting corner portions is a cutout surface 10 whose corner is cut off into an inclined surface. The cutout surface 1 is formed on the vertical connecting surface 9a of the lower block 2 which is located on the same side as the connecting surface to which the band-shaped elastic sealing material 12 is attached.
The band-shaped elastic sealing material 1 is formed in a U-shaped bent shape continuous from end to end of the connecting surface 9a so as to sandwich the inner and outer surfaces of the connecting surfaces 9 and 10.
2, 12 are stuck. In this embodiment, FIG.
As shown in FIG.
It is cut off at 5 degrees so that the end faces of the sealing material are in surface contact with each other. If there is any concern about the close contact between the ends of the band-shaped elastic seal material, a relatively short elastic seal is formed along the outer edge of the connecting portion of the band-shaped elastic seal material, as indicated by the dashed line in FIG. The piece 16 may be stuck. In order to maintain the stability of the sticking of the band-shaped elastic sealing material, a tape 17 made of, for example, butyl rubber is appropriately used in a state of partially covering the adjacent band-shaped elastic sealing materials 12 as shown by the one-dot chain line in FIG. You may attach it.

The cylindrical block 1 has an upper block 3 on a lower block 2 and horizontal upper and lower connecting surfaces 7, 7, 7, 7
Are placed in abutting condition, and the belt-shaped elastic sealing material 12
In a compressed state and are connected to each other. FIG. 1 shows such a cylindrical block constructed by abutting a vertical connecting surface having a band-shaped elastic sealing material and a connecting surface not having the same, and sequentially connecting the band-shaped elastic sealing materials 12 in a compressed state. 5 shows a common groove 18 and, as shown in FIGS. 5 and 3 to 4, four notched surfaces 10, 10 formed at a meeting portion between an adjacent lower block 2, 2 and an adjacent upper block 3, , 10, 10 are filled with a water-swellable water-stopping substance 21. The filling of the waterproof material 21 may be performed by means of attaching a block 22 having a rectangular parallelepiped shape as shown in FIG. 6 or by applying a water-swellable waterproof material. FIG. 6 shows the four blocks 2, 2,
3 and 3 show the water stop (block piece) 21 in an exploded manner.

Therefore, when water leaks into the inside of the structure, the leak point of the outer seal portion can be specified within the length of the cylindrical block. In the common groove having such a configuration, the horizontal flow path (a path through which water can flow, as shown in FIG. 3) formed between the lower block and the upper block, which causes water to leak at the outer seal portion, is the same hereinafter. ) 23 or the flow path 2 in the circumferential direction shown in FIG.
When water flows into the space 5, when the water comes into contact with the water stop 21 filled in the space 20, the water swells and is restrained by the space 20 in a state where the pressure is increased. . As a result, the horizontal flow path and the circumferential flow path are blocked by the water-swelled waterstop.

As a result, when water leaks inside the structure, it can be specified that the water leak is related to the tubular block forming the portion (the water leak location is specified within the length of the tubular block). It is possible to provide reliable repair by providing an injection hole 26 in the vicinity of the water leakage site, for example, as shown in FIG. 3, which communicates with the flow path, and injecting a foamable resin liquid from the injection hole. it can.

FIG. 7 shows a case where the cutout surfaces 10 of the upper block 3 and the lower block 2 are formed as curved concave surfaces. In FIG. 7, four cutout surfaces 10, 10, 1 are shown.
A space 20 surrounded by 0 and 10 is filled with a water-swellable water-stop material 21. 8 to 11 show another embodiment of the tubular block 1 according to the present invention. In the tubular block 1 shown in FIG. 8, the lower block 2 and the upper block 3 are U-shaped.
It shows another aspect in the case of a letter-like configuration. Further, FIG. 9 shows a case where both the lower block 2 and the upper block 3 are formed in a U shape having a semicircular cross section, and the structure of the notch surface 10 is the same as that described above.

In FIG. 10, the lower block 2 has a U-shaped cross section, and the upper block 3 has a plate-like shape that covers the upper end opening 23 of the lower block 2. FIG. 11
Forms the upper block 3 in an inverted U-shape in cross section,
It shows a case where the lower block 2 is formed in a plate shape that covers the lower end opening portion 25 of the upper block 3.

In these cylindrical blocks shown in FIGS. 8 to 11, the widthwise intermediate portion of each corner where the horizontal connecting surface 7 and the vertical connecting surface 9 intersect is the inclined surface shown in FIG. 6 or the curved surface shown in FIG. It is formed on the notch surface 10 with the corners dropped into the concave surface, and when connecting the cylindrical blocks, the structure shown in FIG.
As shown in FIG. 11, the band-shaped elastic seal is continuous between the vertically adjacent connecting surfaces and between the adjacent connecting surfaces in the front-rear direction so as to sandwich the notched surfaces 10 from inside and outside. The material 12 is interposed.

[0024]

The connection method according to the present invention is configured as described above, and therefore has the following excellent effects.

The present invention employs a configuration in which a water-swellable water-stop material is filled in a space surrounded by four cut surfaces formed at a meeting portion between an adjacent lower block and an adjacent upper block. A horizontal flow path between the band-shaped elastic sealing materials interposed at the connecting portion between the lower block and the upper block,
Alternatively, when water leaks from the outer seal portion and water enters the circumferential flow path between the band-shaped elastic seal materials interposed between the connecting portions of the cylindrical blocks, the water flows into the waterstop. The contact causes water swelling of the water-stopping material, whereby the horizontal flow path and the circumferential flow path can be blocked. Therefore, when water leaks inside the structure, the leak point of the outer seal portion can be specified within the length of the cylindrical block. Therefore, if only the block is repaired, it is possible to reliably prevent water leakage.
For this reason, repair over a wide range as in the related art is not required, and the repair cost can be significantly reduced. In addition, it can be said that the junction portion of the connection surface is a portion that is particularly easy to leak water, but since this junction portion is filled with a water-swellable water-stopper, it is possible to enhance the water stoppage of the connection portion of the building. .

Further, according to the connecting method of the present invention, since the water-swellable water-stopping material can be completely stored inside the block, it becomes invisible from the inside of the structure, and the joint groove or the like is not visible. The aesthetics of the structure can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cylindrical block.

FIG. 2 is an exploded perspective view thereof.

FIG. 3 is a perspective view for explaining a filling state of a water blocking material in a gap formed at an associated portion of upper, lower, left, and right blocks.

FIG. 4 is a perspective view for explaining a filling state of a waterproof material in a void formed in the meeting portion of upper, lower, left and right blocks.

FIG. 5 is a cross-sectional view illustrating a filling state of a water blocking material in a void formed in the meeting portion of upper, lower, left and right blocks.

FIG. 6 is an exploded perspective view illustrating a configuration of a meeting portion of upper, lower, left and right blocks.

FIG. 7 is a cross-sectional view showing another aspect of the voids formed at the meeting portions of the upper, lower, left, and right blocks in a state in which the water voids are filled in the voids.

FIG. 8 is a front view showing another embodiment of the tubular block.

FIG. 9 is a front view showing another aspect of the tubular block.

FIG. 10 is a front view showing another mode of the tubular block.

FIG. 11 is a front view showing another mode of the tubular block.

FIG. 12 is a perspective view showing a common groove constructed by using a conventional tubular block.

FIG. 13 is a perspective view illustrating a problem of the related art.

FIG. 14 is a perspective view illustrating a problem of the conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical block 2 Lower block 3 Upper block 10 Notched surface 12 Belt-like elastic sealing material 20 Void 21 Waterproof material 23 Channel 25 Channel

Claims (8)

[Claims] 1. A connecting method for connecting upper and lower two-part concrete cylindrical blocks having open front and rear ends, wherein each of an upper block and a lower block has a horizontal connecting surface and a vertical connecting surface. An intermediate portion in the width direction of each intersecting corner portion is a cut-out surface with a corner cut off. When connecting the cylindrical blocks having such a configuration with the connecting surfaces at the front and rear ends thereof in contact with each other, the adjacent lower blocks are connected. The space surrounded by the four cutout surfaces formed at the meeting portion between the block and the adjacent upper block is filled with a water-swellable water-stop material, and is adjacent between the vertically adjacent connection surfaces and adjacent to the front and rear. A band-shaped elastic sealing material is interposed between the connecting surfaces so as to sandwich the cutout surface from both the inner and outer sides and in a continuous state from one end to the other end of the connecting surface, and water can flow between the inner and outer band-shaped elastic sealing materials. Forming a channel Connecting method of concrete block that certain leakage points, characterized facilitated. 2. An upper block and a lower block are both formed in a U-shaped cross section, and a widthwise intermediate portion of each corner where a horizontal connecting surface and a vertical connecting surface intersect is cut off. 2. A method according to claim 1, wherein said concrete block has a notched surface. 3. The lower block is formed in a U-shaped cross section, and the upper block is formed in a plate shape that covers an upper end opening portion of the lower block, and both have a horizontal connecting surface and a vertical connecting surface. 2. A widthwise intermediate portion of each of the corners intersecting with each other is formed as a notched surface with a corner cut off.
A method of connecting concrete blocks that makes it easy to identify the locations of leaks. 4. An upper block is formed in an inverted U-shape in cross section, and a lower block is formed in a plate shape covering a lower end opening of the upper block, and both a horizontal connecting surface and a vertical connecting surface are formed. 2. A concrete block connecting method according to claim 1, wherein the widthwise intermediate portion of each corner portion where the corners intersect is formed as a cut-out surface with a corner cut off. 5. A concrete cylindrical block of an upper / lower two-parting type having open front and rear ends, wherein an upper block and a lower block each have a width direction at each corner where a horizontal connection surface and a vertical connection surface intersect. A concrete cylindrical block characterized in that an intermediate portion has a cut-out surface with a corner cut. 6. A concrete tubular block of upper and lower halves with open front and rear ends, wherein the upper block and the lower block are both formed in a U-shaped cross section and have a horizontal connecting surface. A cylindrical block made of concrete, characterized in that the widthwise intermediate portion of each corner where the vertical connecting surface intersects with the vertical connecting surface is a notched surface with a corner cut off. 7. A concrete cylindrical block of an upper and lower two-parting type having open front and rear ends, wherein a lower block is formed in a U-shape in cross section, and an upper block defines an upper end opening of the lower block. It is formed in a plate shape to cover,
A concrete cylindrical block, characterized in that a middle portion in the width direction of each corner where a horizontal connection surface and a vertical connection surface intersect is a cut-out surface having a corner cut off. 8. A concrete cylindrical block of an upper / lower two-parting type having open front and rear ends, wherein an upper block is formed in an inverted U-shape in cross section, and a lower block covers a lower end opening of the upper block. A concrete tube characterized in that a widthwise intermediate portion of each corner where a horizontal connecting surface and a vertical connecting surface intersect is a cut-out surface with a corner cut off. Shaped blocks.