JPS6215300Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seawall structure constructed by sinking a hull caisson into the seabed.

Generally, in the hull caisson construction method, the bow and stern blocks of a used ship are cut and removed, and after the maintenance is completed, the hull is towed to the site.
This is done by sinking the dam, then filling it with earth and sand, and then reusing it as an embankment body.

Incidentally, the relationship between conventional bank protection work by sinking hull caissons and waterway work is shown in FIGS. 1 and 2.

In other words, as shown in Figure 1, in the revetment work, the hull caisson 2 is sunk on a mound 1 built on the seabed, an upper concrete 3 is placed on top of the mound 1, and the bottom side is scoured. A foot protection block 4 for prevention is installed, and a filling material 5 such as sand or crushed stone is put into the hull to stabilize wave pressure.

As shown in FIG. 2, after the hull caisson is completely sunk, construction work is performed on the reclaimed side using reclaimed soil 6.

Thereafter, in order to provide the waterway 7, the reclaimed soil in the waterway installation range is excavated, and after the waterway 7 is constructed, the excavated soil is backfilled.

As mentioned above, when installing a waterway alongside a revetment structure, conventionally there is a problem in that it requires duplication of work, such as excavating the reclaimed soil to construct the waterway, and then backfilling with excavated soil again after the construction of the waterway is completed.

The present invention is an attempt to solve these problems, and aims to provide a bank revetment structure with a waterway that allows bank protection work and waterway work to be carried out efficiently without duplication of work. purpose.

For this reason, the revetment structure with a channel of the present invention is a revetment structure consisting of a hull caisson sunk into the seabed, and is characterized in that the hull caisson has a built-in channel.

Hereinafter, embodiments of the present invention will be explained with reference to drawings. Figures 3 to 5 show a revetment structure with a water channel as the first embodiment of the present invention, Figure 3 is a cross-sectional view thereof, and Figure 4 is a cross-sectional view of the structure. Its vertical cross-sectional view, Figure 5, is the 4th
It is an enlarged view of section V in the figure, and FIGS. 6 to 8 are all partial views showing a modified example of the relationship between the bulkhead of the hull caisson and the waterway, corresponding to FIG.

As shown in Figures 3 to 5, the hull caisson 2 is sunk on a mound 1 built on the seabed,
A foot protection block 4 for preventing scouring is installed on the bottom side of the caisson, and filling material 5 such as sand or crushed stone is placed inside the hull caisson 2.

When filling the filling material 5, a concrete waterway 7 is provided inside the hull caisson 2 via the foundation 9. This will be done prior to construction.

Then, after the work of filling the inside of the hull caisson 2 with the filling material 5 is completed, the upper concrete 3 is placed in the upper part of the hull caisson 2.

The concrete waterway 7 and its foundation 9 are
As shown in Figure 15, it may be assembled in advance into the hull caisson 2 at the factory, and by towing this prefabricated product to the site, it is possible to reduce the number of man-hours and construction period on site. can contribute.

As shown in FIG. 5, a plurality of connecting rods 11 are attached to the bulkhead 10 of the hull caisson, and a concrete waterway 7 is cast so as to bury these connecting rods 11.

Regarding the relationship between the water channel 7 and the partition wall 10, in addition to being fixed together via the connecting rod 11 as described above, the water channel 7 and the partition wall 10 are connected via a connecting member 12 as shown in FIG. You may.

Moreover, as shown in FIG. 7, the water channel 7 and the partition wall 10
A rubber sealing material 15 may be inserted between the
Furthermore, as shown in FIG. 8, a gap may be formed between the water channel 7 and the partition wall 10 so that they are not restrained from each other.

Hull caisson 2 with built-in waterway 7 as described above
After the first stage was installed, the reclaimed soil (the second
Reclamation work (see reference numeral 6 in the figure) will be carried out.

9 to 11 show a revetment structure with a water channel as a second embodiment of the present invention, in which FIG. 9 is a cross-sectional view thereof, FIG. 10 is a vertical cross-sectional view thereof, and FIG.
12 is an enlarged view of the XI section of FIG. 0, and FIGS. 12 to 14 are partial views showing a modified example of the relationship between the bulkhead of the hull caisson and the waterway, corresponding to FIG. 11.

In the case of this second embodiment, as in the case of the first embodiment described above, the hull caisson 2 is sunk on a mound 1 built on the seabed, and there are roots on the bottom side of the mound 1 to prevent scour. In addition to installing a compaction block 4, a filling material 5 such as sand or crushed stone is placed inside the hull caisson 2.

Furthermore, when inserting the filling material 5, a waterway 8 is provided inside the hull caisson 2 via the foundation 9.
This waterway 8 is made of steel pipe.

In addition, in this case as well, the waterway 8 and its foundation 9
can be assembled into the hull caisson 2 in advance at the factory.

This steel pipe waterway 8 has its end fixed to the opening periphery of the bulkhead 10 of the hull caisson via a connecting plate 13 as shown in FIG. 11, and also has a continuous steel pipe waterway as shown in FIG. The outer periphery of 8 may be fixed to the periphery of the opening of the partition wall 10 with a connecting plate 13.

Alternatively, as shown in FIG. 13, a seal holding fitting 14 may be attached to the end of the steel pipe waterway 8, and a rubber sealing material 15 may be inserted between this fitting 14 and the periphery of the opening of the partition wall 10. Alternatively, as shown in FIG. 14, a gap may be provided between the outer periphery of the continuous steel pipe waterway 8 and the periphery of the opening of the partition wall 10 so that the two are not restrained from each other.

After the filling material 5 has been filled into the hull caisson 2, upper concrete 3 is placed on the upper part of the hull caisson 2, and on the reclaimed side of the hull caisson 2, as in the case of the first embodiment, Similarly, construction work using reclaimed soil will be carried out.

As shown in Figs. 5 and 6 and Figs. 11 and 12, compared to the case where the water channels 7 and 8 are mechanically connected to the bulkhead 10 of the hull caisson, Figs. If the waterways 7 and 8 are mechanically separated from the bulkhead 10 of the hull caisson as shown, even if the hull caisson is forcibly deformed due to ground subsidence, the stress in the hull caisson will not be transmitted to the waterways 7 and 8. There is.

In any case, according to the revetment structure with waterways of the present invention, the waterways 7 and 8 are located inside the hull caisson 2, compared to the conventional case where the waterways were constructed separately on the reclaimed land on the inland side of the revetment structure. This eliminates the need for redundant construction work such as excavation and backfilling of reclaimed soil for waterway installation, contributing to shortening the construction period and reducing costs.

In addition, in the revetment structure with a waterway of the present invention, since the waterway is incorporated into the revetment structure using the ship's caisson, there is no need for a waterway in the reclaimed land on the inland side, which has the advantage of widening the utilization of space in the reclaimed land. It is also possible to incorporate waterways etc. into the hull caisson in advance at the factory, which has the advantage of further improving construction efficiency.

[Brief explanation of the drawing]

Figures 1 and 2 show a conventional bank protection structure. Figure 1 is a cross-sectional view of the structure, Figure 2 is a cross-sectional view of the construction of a waterway to the reclaimed land, and Figures 3 to 5 are Fig. 3 is a cross-sectional view thereof, Fig. 4 is a longitudinal sectional view thereof, and Fig. 5 is an enlarged view of section V in Fig. 4. 6 to 8 are partial views showing modified examples of the relationship between the bulkhead of the hull caisson and the waterway, corresponding to FIG. 5, and FIGS. It shows a seawall structure with a waterway, and it is the 9th
The figure is a cross-sectional view, FIG. 10 is a vertical cross-sectional view, FIG. 11 is an enlarged view of section XI in FIG.
14 are partial views showing modified examples of the relationship between the bulkhead of the hull caisson and the waterway, corresponding to FIG. 11, and FIG. 15 is a cross-sectional view showing the prefabricated waterway to the hull caisson. It is. 1...mound, 2...hull caisson, 3...
Upper concrete, 4... Root hardening block, 5...
...Filling material, 6...Reclaimed soil, 7...Concrete waterway, 8...Steel pipe waterway, 9...Foundation, 10...
...Partition wall, 11...Connection rod, 12...Connection material, 13
...Connecting plate, 14...Seal holding fitting, 15...
Rubber sealing material.

Claims (1)

[Scope of utility model registration request] A revetment structure with a water channel, which is comprised of a hull caisson sunk into the seabed, characterized in that the hull caisson has a built-in water channel.