JP4334086B2 - Caisson joint material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a caisson joint material for sealing a joint part between caisson and caisson.
[0002]
[Prior art]
Generally, caisson is used for offshore artificial islands, offshore airport perimeters, general seawalls, etc., and its height is over 15m. In particular, in recent years, there are many cases where it is installed in a place with poor ground, and high sealing performance is indispensable for the gap formed between the caisson and the caisson.
[0003]
The caisson joint material used as the seal material has an elongated shape made of an elastic material, and is inserted from one or two places into the gap or joint formed between the caisson and the caisson. Thus, a sealed state can be obtained.
[0004]
[Problems to be solved by the invention]
After the installation is completed, the caisson joints are sealed by the caisson joint material used as the seal material, but the caisson is easy to move under the influence of waves, etc. until the installation state is stable. Seal failure occurs.
[0005]
The part where the seal failure occurs will be repaired, but the general method is to remove the shells and the like attached to the joint part that becomes the seal part when the gap of the joint part is greatly enlarged After that, the caisson joint material is again inserted and sealed.
[0006]
Or, when the gap between the joint materials is reduced and it is difficult to insert the caisson joint material, a hole is formed that penetrates the joint portion up and down, and the caisson joint material is inserted into the bore hole, Means are provided for sealing.
[0007]
In particular, in the latter case, a hollow hole that penetrates the joint portion up and down is opened. However, if a large hole is made, the insertion work becomes easier, but the reinforcing bar inside the caisson is cut and the strength of the caisson is impaired. Therefore, the present situation is that a large hole cannot be formed.
[0008]
In addition, since the cut-out hole is formed, for example, for 15 m in the vertical direction, it takes time to insert the caisson joint material, which is not desirable in terms of workability.
[0009]
Accordingly, an object of the present invention is to provide a caisson joint material that facilitates insertion into the joint part.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to claim 1 of the present invention, a skeletal column continuous in the longitudinal direction is disposed inside a vertically long hollow cylinder made of a flexible material , The hollow cylinder includes a binding member that is tightly bundled in a folded state so as to have a small diameter across the skeleton column, and a cutting aid that cuts the tightening member. Thereby, even if there is insertion resistance at the time of insertion, the hollow cylinder is smoothly inserted without being bent by the skeleton column without being bent. Moreover, since the hollow cylindrical body is folded so as to have a small diameter, the insertion work is not performed even on the peripheral wall of the joint, and the insertion work is facilitated, and the insertion work is completed quickly. After the insertion is completed, the binding member is cut by the cutting aid to release the folded state and secure a seal shape that elastically contacts the inner wall surface of the joint .
[0016]
According to the second aspect of the present invention, the joint main body part which is vertically long and made of a flexible material capable of returning to the original state is disposed along the longitudinal direction so that the diameter of the joint main body part is reduced. A tight binding member that is folded in a state of being folded across the skeleton column, and a cutting aid that cuts the tight binding member.
[0017]
Thereby, even if there is insertion resistance at the time of insertion, it is inserted smoothly without being caught on the way. And since it is folded so that a diameter may become small, it does not become a big insertion resistance also in a joint part surrounding wall, but an insertion operation | work becomes easy and it completes quickly. After the insertion is completed, the binding member is cut by the cutting aid to release the folded state and return to the sealed state in which the inner wall surface of the joint is elastically contacted.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3.
[0021]
FIG. 1 is a schematic plan view showing a joint 3 between the caisson 1 and the caisson 1, and the height of the caisson 1 exceeds 15 m, for example.
[0022]
The joint portion 3 is provided with a repair cut-out hole 5 penetrating vertically, and the cut-out hole 5 is sealed with a caisson joint material 7.
[0023]
The caisson joint material 7 is made of a flexible material, such as a rubber material, in the hollow cylindrical body 9 having a bottom, and is set to have a diameter larger than the inner diameter of the hollow 5.
[0024]
Inside the hollow cylinder 9, a skeleton column 11 continuous along the longitudinal direction made of a metal pipe is provided, and the length is substantially the same as that of the hollow cylinder 9. In addition, the skeleton pillar 11 may be a parallel ladder shape as shown in FIG. 4 or a V-shaped combination shape as shown in FIG.
[0025]
According to the caisson joint material 7 configured as described above, the caisson joint material 7 is inserted into the cutout hole 5 of the joint part 3 from above. At this time, even if a slight insertion resistance is exerted by the internal skeleton pillar 11, the insertion operation is completed quickly. When the insertion is completed, the peripheral wall surface of the hollow cylindrical body 9 comes into elastic contact with the inner peripheral surface of the cut-out hole 5 to ensure a sealed state. Further, the skeleton column 11 becomes a weight to prevent the hollow cylindrical body 9 from being lifted, and a stable sealing state can be obtained.
[0026]
In this case, when the ground where the caisson 1 is installed is poor, it is desirable to fill the inside of the hollow cylinder 9 with, for example, asphalt mastic. As a result, the hollow cylinder 9 is strongly elastically in contact with the inner peripheral surface of the cut-out hole 5, follows the slight movement of the caisson 1, and a more reliable sealing state is obtained. In addition, when filling asphalt mastic or the like, the skeleton column 11 is vibrated, thereby providing an advantage that the filling can be reliably performed without a gap.
[0027]
FIGS. 6 to 8 show a second embodiment of the caisson joint material 7 at the joint sealing work.
[0028]
That is, the bottomed hollow cylindrical body 9 is made of a flexible material such as a rubber material, and is tightened in a state where the hollow cylindrical body 9 is folded by the binding member 13 to be small before insertion. At the same time, the structure is provided with a cutting aid 15 for cutting the tight binding member 13.
[0029]
The tight binding member 13 uses a string made of a material that can be easily cut, but may use a short film-like cylinder (not shown). As shown in the figure, the string-like tight binding members 13 are sequentially tied at regular intervals from the folded top, and the whole is tightly bound.
[0030]
In the case of a cylindrical body, although not shown, the cylindrical body is sequentially inserted from the end of the folded hollow cylindrical body 9 at a predetermined interval, and the whole is tightly bound.
[0031]
The cutting aid 15 is made of a wire 17 as shown in FIG. 7, and has a shape in which a large number of small cutter blades 19 are provided in the central region. When the hollow cylindrical body 9 is tightly bound by the tightness member 13, the wire 17 passes through the inside of the tightness member 13 from above the folded hollow cylindrical body 9, as shown in FIG. The member 13 is folded back at the central portion where the cutter blade 19 is provided, and returns to the upper side through the outside. Both free ends have a shape extended longer than the hollow cylindrical body 9. .
[0032]
Therefore, according to the second embodiment, the hollow cylindrical body 9 tightly bound by the tightness member 13 is inserted into the cutout hole 5 of the joint portion 3 from above. At this time, since the caisson joint material 7 has a small diameter and is folded, a large insertion resistance does not occur and the caisson joint material 7 is smoothly and smoothly inserted, and the insertion operation is completed quickly.
[0033]
When the insertion is completed, since both ends of the wire 17 are extended upward, the wire 17 is held up and moved up and down while being pulled upward, so that the cutter blade 19 sequentially cuts from the lowest string 13. To go. When the uppermost string 13 is completely cut, the folded state is released, and the hollow cylindrical body 9 to be returned to its original state is brought into elastic contact with the peripheral surface of the cut-out hole 5 by the elastic force, and the sealing state of the joint portion 3 is ensured. .
[0034]
In this case, by filling the inside of the hollow cylinder 9 with, for example, asphalt mastic etc. depending on the conditions of the installation location of the caisson 1, the outer peripheral surface of the hollow cylinder 9 follows the inner peripheral surface of the hollow 5; A strong seal is achieved because of the strong elastic contact.
[0035]
FIG. 9 shows a third embodiment of the caisson joint material 7 during joint joint sealing work.
[0036]
That is, a structure in which a skeleton column 21 made of a metal pipe is provided inside the hollow cylinder 9 folded by the tight binding member 13 is provided.
[0037]
The other constituent elements are the same as those in FIG.
[0038]
Therefore, according to the third embodiment, in addition to the effects of the second embodiment, the skeleton pillar 21 provided in the interior causes the hollow hole 5 to be long in the vertical direction or has a slight insertion resistance. However, the insertion operation can be completed quickly without being affected by them.
[0039]
10 and 11 show a fourth embodiment of the caisson joint material 23 at the joint sealing work.
[0040]
In other words, the joint main body 25 formed in a vertically long plate shape made of a flexible material capable of returning to the original state is fastened in a folded state so that the diameter of the joint main body 25 is reduced. The structure includes a bundle member 13 and a cutting aid 15 for cutting the tight bundle member 13.
[0041]
In addition, since the tight binding member 13 and the cutting aid 15 are the same as those in the second embodiment, the same reference numerals are given and detailed description thereof is omitted.
[0042]
Therefore, according to 4th Embodiment, it inserts into the hollow 5 of the joint part 3 from the top. At this time, since the caisson joint material 23 is in a folded state with a small diameter, the caisson joint material 23 can be smoothly and smoothly inserted, and the insertion operation can be completed quickly.
[0043]
Since both ends of the wire 17 at the time of completion of the insertion are extended upward, by holding it and moving it up and down while pulling it upward, the cutter blade 19 sequentially cuts it from the lowest string 13. To go. When the uppermost string 13 is completely cut, the folded state is released, and the elastic force of the joint main body 25 to return to the original is elastically contacted with the peripheral surface of the cut-out hole 5 to secure the seal of the joint 3. .
[0044]
In the case of this embodiment, as shown in FIG. 12, a skeletal column 27 made of a metal pipe is integrally provided between the folded joint main portions 25, so that a hollow hole is formed. 5 is long in the vertical direction, and even if there is a slight insertion resistance, the insertion operation can be completed quickly without being affected by them.
[0045]
In addition, when the caisson 1 and the joint part 3 of the caisson 1 are greatly enlarged, the cutout hole 5 is not necessary, and the seal state of the joint part 3 can be obtained by directly inserting into the joint part 3.
[0046]
【The invention's effect】
As described above, according to the present invention, it is possible to easily insert the caisson joint material into a joint part that is vertically long and has a small diameter, and the insertion operation can be completed quickly. As a result, workability can be greatly improved.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a part of a caisson joint material according to the present invention implemented in a joint part between caisson and caisson.
FIG. 2 is an enlarged plan view at the completion of insertion in which a caisson joint material is inserted into the cutout hole.
FIG. 3 is a schematic perspective view in which a part of the caisson joint material is omitted.
FIG. 4 is a partial explanatory view showing another embodiment of the skeletal column.
FIG. 5 is an explanatory view of a part showing another embodiment of the skeletal column.
FIG. 6 is a partial schematic perspective view showing a second embodiment of the caisson joint material during joint joint sealing work.
FIG. 7 is a perspective view showing a part of the cutting aid.
FIG. 8 is a schematic enlarged plan view similar to FIG. 2 after insertion is completed.
FIG. 9 is a partial schematic perspective view showing a third embodiment of the caisson joint material during joint joint sealing work.
FIG. 10 is a partial schematic perspective view showing a fourth embodiment of a caisson joint material during joint joint sealing work.
FIG. 11 is a schematic plan view showing an insertion completion state of the fourth embodiment.
FIG. 12 is a schematic perspective view showing another embodiment in which the caisson joint material of the fourth embodiment is provided with a skeleton length.
13 is a schematic plan view at the time of completion of insertion in FIG. 12. FIG.
[Explanation of symbols]
1 Caisson 5 Drilled hole 7 Caisson joint material 9 Hollow cylinder 11 Skeletal column

Claims (2)

A skeletal column that is continuous along the longitudinal direction is arranged inside a hollow cylinder that is made of a flexible material and that is long in the vertical direction. On the other hand, the hollow cylinder is folded so as to have a smaller diameter across the skeleton column. A caisson joint material comprising: a tight binding member that tightly binds in a state of being cut; and a cutting aid that cuts the tight binding member . The main body of the joint, which is made of a flexible material that can be restored to its original state, is vertically folded with a skeletal column arranged along the longitudinal direction so that the diameter of the joint body is smaller. A caisson joint material, comprising: a tight binding member to be bundled; and a cutting aid for cutting the tight binding member.

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