JP3564502B2 - New buried box height adjustment method and apparatus for existing buried boxes - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and an apparatus for adjusting the height of a new buried box for an existing buried box for adjusting the height of a new buried box to be joined to the existing buried box when constructing a buried box tunnel.
[0002]
[Prior art]
Conventionally, as a method of submerging a final part in the construction of a submerged box tunnel, as shown in FIG. 6, both joint end surfaces 1a and 1b of a newly submerged submerged box 1 are inclined obliquely downward. The joining end faces 2a, 2b of the existing immersion boxes 2, 2 previously sunk at both end sides are inclined at the same angle as the inclination of the joining end face of the new immersion box 1, and the two existing immersion box joining end faces 2a, 2b are inclined. In the final connection part of the V-shape between 2b and 2h, both ends are settled and a new embedding vessel 1 of the V-shape is settled. The V-shaped new submerged box 1 is drawn into the V-shaped final joint by water pressure by releasing the joint between the bulkheads 5 and 5 to the atmosphere. A method was developed to make the primary water stop And that (JP-A-11-152763).
[0003]
In this construction method, as shown in FIG. 6, a temporary bearing stand 6 is constructed at the bottom of the water to adjust the height of the newly buried box 1, and a support jack 7 for height adjustment is installed in the newly buried box 1. The support jack rod 8 is supported on the temporary support base 6, and the height of the newly buried box 1 is adjusted by operating the support jack 7.
[0004]
[Problems to be solved by the invention]
In the conventional method as described above, it is necessary to construct at least four temporary bearing bases on a water floor having a depth of several tens of meters, and the construction must be based on diving work. There are various restrictions, such as restrictions on closing routes, and there is a problem that it takes a lot of cost and a long time.
[0005]
In view of such a conventional situation, the present invention requires no work by a diver or requires a small amount of work. The purpose of the present invention is to provide a new method for adjusting the height of a submerged box and a device therefor.
[0006]
[Means for Solving the Problems]
In order to solve the conventional problems as described above and to achieve the intended purpose, the feature of the method for adjusting the height of a new submerged box according to the present invention is as follows. In joining the new buried box to an arrangement extending this, in the new buried box height adjustment method for the existing buried box to adjust the height of the new buried box with respect to the joint end of the existing buried box, Lower jack supports are projected on both sides, and the upper jack supports are arranged on both sides of the newly buried box so as to face above the lower jack supports at the time of joining the newly buried box. , The new buried box is settled, and the upper jack support is supported on the lower jack support via a height adjusting support jack. Adjust the height of the newly buried box It is to.
[0007]
In addition, the feature of the new buried box height adjusting device for the existing buried box according to the present invention is that, when the newly buried box is joined to the previously installed buried box in an arrangement extending the same, What is claimed is: 1. An apparatus for adjusting the height of a new buried box with respect to the joint end of the box, comprising: a lower jack support provided on both sides of the existing buried box; On both sides of the box, an upper jack support provided at a position facing the upper side of the lower jack support of the existing buried box, and a new buried box height adjustment interposed between the upper and lower jack supports. And a jack for use.
[0008]
In the method and apparatus described above, the new buried box is a buried box for the final connection of a buried tunnel whose both ends are joined to the existing buried box, and upper jack supports are provided on both sides of both ends of the newly buried box. A table may be provided, and each lower jack support stand may be provided on both sides of each joint end of the existing buried box on both sides of the newly buried box.Also, the joint end face of the existing buried box is inclined obliquely upward, The joint end face of the immersion box may be inclined at substantially the same angle as the inclination.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an example of an embodiment of the present invention will be described with reference to FIGS.
[0010]
FIG. 1 shows an example of a final connection part of a submerged box tunnel embodying the present invention. In the figure, reference numeral 10 denotes a newly installed submerged box (final connection submerged box) constituting a final connection part of the submerged box tunnel. The newly installed sinking box 10 is formed in a V-shaped arrangement of the joining end faces at both ends, that is, a tapered shape in which both joining end faces 10a and 10b are inclined obliquely downward. In the figure, reference numerals 11 and 11 denote existing submerged boxes previously set at both ends of the newly installed submerged box 10, respectively, and joint end faces 11a and 11b of the existing submerged boxes 11 and 11 which are opposed to each other are respectively connected. A tapered final joint having both ends formed in a V-shape is formed between the two joint end surfaces 11a and 11b so as to have substantially the same inclination as the two joint end surfaces 10a and 10b of the newly installed immersion box 10.
[0011]
A lower jack support 12 is protruded from both sides of both joint ends on the final joint side of each of the existing immersion boxes 11, 11. On the surface, upper jack supports 13, 13,... Are respectively protruded from the existing buried box so as to face above the lower jack supports 12, 12,.
[0012]
In this manner, the newly installed bearing jacks 14 for adjusting the height of the buried box are interposed between the upper and lower jack supports 12 and 13 forming each pair, and the respective jacks 14, 14. The height of the immersion box 10 between the existing immersion boxes 11, 11 can be adjusted.
[0013]
Next, a method for adjusting the height of the newly installed sunk box using the apparatus having the above-described configuration will be described. The jack supports 12 and 13 of the new and existing buried boxes 10 and 11 are previously set at predetermined positions at the time of manufacturing the buried boxes, and the existing buried boxes 11 and 11 are sunk at the predetermined positions. As shown in FIG. 3, the newly installed sinking box 10 is settled at the final joint between the ends of the existing sinking boxes 11, 11 by using a suspension device. Prior to the subsidence, the bearing jacks 14 are fixed downwardly below the upper jack support bases 13 of the newly installed submerged box. Note that the bearing jack may be fixed to the lower support base 12.
[0014]
In this manner, the newly buried box is settled at a predetermined position, and the lower ends of the bearing jacks 14 are brought into contact with the lower jack supports 12 of both the existing buried boxes. After that, the respective bearing jacks 14 are appropriately operated to adjust the newly installed sinking box 10 to a predetermined height.
[0015]
In the above example, a new submerged box for tunnel communication at the final junction of the submerged box tunnel was described. In addition, the height of the newly installed submerged box at the beginning and midway of the submerged box tunnel, which is gradually extended, is explained. It can also be used for adjustment. In this case, as shown in FIG. 4, it is necessary to construct a temporary support base 6 at the lower part on the tip side (the same parts as those shown in FIGS. The description is omitted by attaching the reference numerals. The same applies hereinafter.
[0016]
Further, in the above-described example, the case where the joint end face is vertically inclined has been described. However, the present invention is not limited to this, and the joint end face may be used in a shape perpendicular to the longitudinal direction of the immersion box as shown in FIG. it can.
[0017]
【The invention's effect】
As described above, the method and the apparatus for adjusting the height of a new buried box for an existing buried box according to the present invention are provided by projecting lower jack supports on both sides of the existing buried box, On the surface, an upper jack support is protruded in a position facing above the lower jack support at the time of joining the newly installed buried box, and the newly buried box is settled, and the lower jack support is settled. The upper jack support base is supported via a height adjustment support jack, and the height of the newly installed submerged box is adjusted by the jack. Eliminating the construction and installing the jack support at the specified location during the production of the buried box reduces the work on the laying site, making it possible to complete the laying work safely, at low cost and in a short time. Can be.
[0018]
In addition, the new buried box is a buried box for the final connection of the buried tunnel where both ends are joined to the existing buried box, and upper jack supports are provided on both side surfaces of both ends of the newly buried box, respectively. By providing each lower jack support on both sides of each joint end of the existing buried box on both sides of the newly buried box, it can be similarly suitably used for the buried box joining work of the final connection part of the buried box tunnel.
[0019]
Further, the joint end face of the existing buried box is inclined obliquely upward, and the joint end face of the new buried box is inclined at substantially the same angle as the above-mentioned inclination, so that the final connection burying having the joint end face of the conventional V-shaped arrangement It can be similarly suitably used for the box joining method.
[Brief description of the drawings]
FIG. 1 is a side view showing the outline of a submerged box joint for carrying out the present invention.
FIG. 2 is a sectional view taken along line AA in FIG.
FIG. 3 is a side view showing a construction state of the method of the present invention.
FIG. 4 is a side sectional view showing another example of the present invention.
FIG. 5 is a side view showing still another example of the present invention.
FIG. 6 is a side view sectional view showing a conventional method.
FIG. 7 is a partial sectional view of the same.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 New immersion box 1a Joined end face 1b Joined end face 2 Existing immersed box 2a Joined end face 2b Joined end face 3 Mortar 4 Waterproof rubber 5 Bulkhead 6 Temporary pedestal 7 Bearing jack 8 Bearing jack rod 10 New immersed boxes 10a, 10b Joined end face 11 Existing buried boxes 11a, 11b Joining end face 12 Lower jack support 13 Upper jack support 14 Bearing jack

Claims (6)

At the time of joining the new buried box to the existing buried box installed earlier, adjusting the height of the new buried box with respect to the joint end of the existing buried box. In the box height adjustment method,
A lower jack support is protruded on both sides of the existing buried box, and is disposed on both sides of the new buried box so as to face above the lower jack support at the time of joining the newly buried box. An upper jack support stand is protruded from the lower jack support, and the new buried box is settled, and the upper jack support base is supported on the lower jack support via a height adjusting support jack. A method for adjusting the height of a new buried box with respect to an existing buried box, wherein the jack is used to adjust the height of the newly buried box. The new buried box is the buried box for the final connection of the buried tunnel whose both ends are joined to the existing buried box, and the upper jack supports are provided on both sides of both ends of the newly buried box, respectively. 2. The method for adjusting the height of a new buried box for an existing buried box according to claim 1, comprising lower jack supports on both sides of each joint end of the existing buried box on both sides of the box. 3. The new buried box according to claim 1 or 2, wherein the joining end face of the existing buried box is inclined obliquely upward and the joining end face of the new buried box is inclined at substantially the same angle as the inclination. Height adjustment method. At the time of joining the new buried box to the existing buried box which is installed earlier and extending it, adjust the height of the new buried box with respect to the joint end of the existing buried box. A box height adjusting device, comprising: a lower jack support provided on both sides of the existing immersion box; and a lower jack support provided on both sides of the new immersion box, above the lower jack support of the existing immersion box. A new immersion box for the existing immersion box, comprising: an upper jack support provided at a different position; and a new buried box interposed between the upper and lower jack supports. Height adjustment device. The new buried box is the buried box for the final connection of the buried tunnel whose both ends are joined to the existing buried box, and the upper jack supports are provided on both sides of both ends of the newly buried box, respectively. 5. A new buried box height adjusting device for an existing buried box according to claim 4, comprising lower jack supports on both sides of each joint end of the existing buried box on both sides of the box. The new immersion box with respect to the existing immersion box according to claim 4 or 5, wherein the joining end face of the existing burying box is inclined obliquely upward and the joining end face of the new immersion box is inclined at substantially the same angle as the inclination. Height adjustment device.

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