JPS61113913A - Joint material for embarkment block - Google Patents

Abstract

PURPOSE:To improve sealing ability, by a method wherein a filling member, in which pipe bodies, each having a number of holes formed in its peripheral wall, are buried, is inserted into a flexible hollow body, and the interior of the hollow body, in which its upper end is closed in a state that a water pouring port 26 is left unclosed, is filled with water. CONSTITUTION:Pipe bodies 14, each having a number of holes 16 formed in its peripheral wall, are buried in a manner to be extended through a base body 12 made of rubber having water swelling properties along the longitudinal direction of the base body to form a columnar filler 10. A hollow body 24 made of a flexible material is inserted into a distance part 22 between caissons 20, and water is poured into the hollow body 24. After the plural fillers 10 are inserted into the hollow body 24, the upper end of the hollow body 24 is closed except a water pouring port 26. The base body 12 made of rubber having water swelling properties absorb water for inflation, and the hollow body 24 is pressed against the surface of the caissons 20 with a powerful pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a joint material for vertically sealing spaces between a plurality of blocks installed on a foundation for embankment.

” The construction of unused and small gravity type seawalls, breakwaters, and oil embankments was avoided.
If the open R parts (joint parts) between blocks such as caissons and cellular blocks arranged and installed on the foundation are not closed with sealing means, earth and sand or oil, etc. behind the wall embankment will leak through those parts. Become.

Conventionally, the joint material used is a flexible material (eg, rubber, synthetic resin) filled with hydrated sand, underwater concrete, asphalt, etc. inside the stomach hollow body.

However, since the hydrated sand, underwater concrete, asphalt, etc. filled inside the hollow body are not compressively elastically deformed, the position of the adjacent blocks may shift after installation. If the joint spacing increases, the joint material will not follow the expansion, and the sealing performance between the blocks will be impaired.

. An object of the present invention is to provide a joint material for embankment blocks that can follow changes even if the joint spacing increases.

The embankment l-lock joint material according to the present invention includes a filling member formed by embedding a pipe body having a large number of holes in its peripheral wall along the longitudinal direction of a water-swellable rubber member; and a hollow body made of a flexible material with a closed lower end that can be inserted into the block. Water or a hydrated powder material is filled between the members, and water is also filled into the tubular body, and the blocks are sealed using the volumetric expansion of the water-flip rubber member.

Below, an embodiment of the present invention shown in FIGS. 1 to 6 will be described.

FIG. 1 shows a hand-shaped filler 10 with a rectangular cross section, and
The social frame member 10 includes a known water-swellable rubber base 12 that has the property of chemically absorbing water and expands, and a plurality of water-swellable rubber bases 12 that are penetrated and embedded in the longitudinal direction of the water-swellable rubber base 12. Book tube made of hard material (e.g., hard resin, stainless steel) 1
It is formed by 4. A large number of holes 16 are formed through the peripheral wall of the tube body 14, and when water is injected into the tube body 14, the water is absorbed into the wettable rubber base 12 through the holes 16. There is.

In use, if the length of the columnar filler 10 is insufficient, a plurality of columnar fillers 10.10.・・・
The companions can be connected.

Figure 3 shows, for example, a caisson 20.20 installed on the seabed.
, and a flexible material (e.g., rubber, synthetic resin) 1 hollow body 2 inserted into the space 22 thereof from the bottom downward.
4 is shown as a cross-sectional view, the lower end of the hollow body 24 is sealed, and water is injected into the interior thereof.

In addition, since the spacing d between the caissons 20 and 20 is not determined by law and varies within the range of approximately 50 to 300 m, it is preferable that the wall thickness t of the columnar member 10 is approximately 30 to 50 m. By doing so, if the distance d is large, i number of sheets can be stacked and used. Further, the width W of the columnar filler 10 may be set to a size that allows it to be inserted into the hollow body 24.

To seal between the caissons 20 and 20, a columnar filler 10 (which may be connected as shown in FIG. 2) of a corresponding length is attached to the hollow body 24 in the state shown in FIG. ir
One (three in the figure) was inserted, and a powder material (e.g., sand, fine glass, etc.) was inserted as necessary into the space between the columnar filler 10 and the hollow body 24 (see Figure 4). After that, the top end of the hollow body 24 is closed, leaving the water inlet 26, as shown in FIG.

If left in this state, the water-swellable rubber base 12 absorbs water and tries to expand, but this expansion is blocked by the caissons 20 and 20, and the hollow body 24 is pressed against the caissons 20 and 20.
Note that the lack of water present around the water-swellable rubber base 12 is replenished by the water in the tube 14.

Furthermore, the water shortage is automatically supplemented by rainwater and seawater that infiltrate into the hollow body 24 from the water injection 026.

In this way, the base material 3 consisting of the columnar filler 10 and the hollow body 24
Spacing 22 of caisson 20.20 sealed by 0
When the water-swellable rubber body 12, which has been suppressed from expanding, changes and increases due to crustal deformation, earthquakes, etc.,
As the caisson 20 expands, the shape of the hollow body 24 also changes as shown in FIG. 6, and the sealing of the space 22 is guaranteed.

The volumetric expansion rate of the water-swellable rubber base 12 can be expected to be about 300%, and the larger the expansion pressure, the more the joint material 30
This means that the reliability is high.

In addition, the pipe body 1 is embedded through the water-swellable rubber base body 12.
Since 4 is a highly rigid member made of W material,
The operation of inserting the columnar filler 10 into the hollow body 24 can be easily performed.

Note that the columnar filler 10 is inserted into the hollow body 24 in advance, and the upper end of the hollow body 24 is closed leaving the water inlet 26. After inserting this into the space 22 of the caisson 20.20, the water inlet 26 is closed. Water is injected into the hollow body 24 through the gap 2.
It is also possible to perform a second seal.

Moreover, in place of the columnar filler 10, columnar fillers 40, 50, and 60 having the cross-sectional shapes shown in FIGS. 7 to 9 may be used. In the columnar filler 40, both the water-swellable rubber base 42 and the tube 44 have a circular cross section, and in the columnar filler 50, the water-swellable rubber vJ substrate 52 and the tube 54 both have a rectangular cross section.

In addition, the columnar filler 60 includes a set of water-swellable rubber t-shirts, 4-piece tubular bodies 62.62, etc., and a pipe body 64.64 embedded therein.
Like the tube body 64, it is made of resin, stainless steel, etc., and is composed of a plate body 66 that connects both tube bodies 64 to a phase U. In use, the water-swellable rubber base 62 and 62 are The sand located at is pushed out according to the expansion of the base 62,
The width of the hollow body made of flexible material can be easily expanded. Note that when there is sufficient moisture around the base body 62 for expansion, the tube body 64 may be omitted.

1.11 As is clear from the above description, the embankment block joint material according to the present invention has a pipe body having a large number of holes in its peripheral wall.
A filling member that is embedded along the length of a water-swellable rubber member, and a hollow body made of i'+1 flexible material with a closed lower end into which the filling member can be inserted. By inserting a joint material into the space between the blocks installed on the foundation 1- and filling the hollow body with water with the upper end closed, leaving a water inlet, water-swelling properties can be achieved. Water is supplied by the rubber member, and the expansion pressure caused by the water supply is used to reliably seal between the blocks by the joint material.

Even if the joint spacing between blocks changes or increases over time due to some reason, the shape of the joint material changes due to the action of the water-swellable rubber that suppresses expansion, preventing the movement of the blocks. The sealing between the blocks is guaranteed.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main part FJJ&Ii of a columnar filler for joint material according to an embodiment of the present invention, Fig. 2 is a sectional view showing the connection mode of the columnar filler, and Fig. 3 is a view of the columnar filler inserted between caissons. A cross-sectional view showing a hollow body for joint material according to an embodiment of the present invention,
FIG. 4 is a cross-sectional view showing a joint material made by inserting the columnar filler into the hollow body, FIG. 5 is a vertical cross-sectional view showing the hollow body with the upper end closed, and FIG. A cross-sectional view showing the deformed and expanded state of the joint material when the distance between the caissons increases, and FIGS. 7, 8, and 9 are cross-sectional views of columnar fillers according to other embodiments, respectively. DESCRIPTION OF SYMBOLS 10... Columnar filled 1i4 material, 12... Water-swellable rubber base, 14... Pipe body, 16... Hole, 18... Joint pipe, 20... Caisson, 22... Interval part, 24...
・Hollow body, 26... Water inlet, 30... Joint material, 40
... Columnar filler, 42 ... Aqueous rubber base, 4
4... Tube body, 50... Columnar filler, 52... Water-swellable rubber \J base body, 54... Tube body.

Claims (1)

[Claims] In a joint material that vertically seals between a plurality of blocks installed on a foundation for an embankment, a pipe body having a large number of holes in its peripheral wall is connected to a water-swellable rubber member along the longitudinal direction. It is formed of a filling member that is embedded through the filling member along the direction, and a hollow body made of a flexible material with a closed lower end into which the filling member can be inserted, and the filling member is inserted into the hollow body. is inserted, water or a hydrated powder material is filled between the filling member and the hollow body, water is filled into the pipe body, and the upper end of the hollow body is closed leaving a water inlet. A joint material for embankment blocks characterized by its use.