JP4630215B2 - Relocation method for buried objects - Google Patents

Description

  The present invention relates to a technique suitable for, for example, a case where some roads are underpass roads at road intersections, and existing underground buried objects such as communication cables, electric wires, gas pipes, water pipes, etc. The present invention relates to a method for moving the buried object when a structure is newly constructed at a lower part of a road provided with the above.

  In general, a road 50 such as a main road is provided with a buried object 51 such as a communication cable, an electric wire, a gas pipe, and a water pipe extending in the longitudinal direction as shown in FIG.

  For example, when the road 60 intersecting with the road 50 provided with the buried object 51 is constructed as an underpass road, the buried object 51 at the intersection is conventionally moved as follows. It was.

First, as a step prior to performing the work of underpass road, the underground buried object 51 provided at the intersection of the underpass road, so as not to interfere with work, the position where the side road portion or the pavement section Relocate. This relocation is carried out by operators such as communication, electricity, gas, and waterworks in consultation with road managers, etc., but usually it is carried out individually for each operator, so it often takes a long time. There are some underground objects that cannot be relocated before construction of the underpass road. In that case, the buried object is suspended and protected under the lining plate, and the buried object is buried after the construction of the underpass road. Return to the original state.

  Next, the conventional underpass road construction and the underground relocation work will be described.

  Conventional underpass road construction is performed using a box culvert 58 (see FIGS. 16 to 18). That is, in the construction of the underpass road, as shown in FIG. 15, steel sheet piles 52 are arranged side by side on both sides of the road 60 (see FIG. 14) that should be an underpass road so as to cross the other road 50. Mountain retaining walls 53, 53 are provided.

  Next, a lining board 54 for securing traffic on the other road 50 is installed on the retaining walls 53, 53 at the intersection. Next, the soil 55 between the retaining walls 53 and 53 is excavated to a depth slightly deeper than the buried object 51 that cannot be relocated before construction, and a suspension member provided below the lining plate 54. At 56, the embedded object 51 is suspended and held at a predetermined position.

  Next, as shown in FIG. 16, the soil 55 between the retaining walls 53 and 53 is further excavated, and a box culvert 58 is constructed in the space 57 between the retaining walls 53 and 53 in the order of bottom plate, side wall, and top plate. The box culvert 58 needs to be constructed so that the top plate has a depth of at least 2.5 m in order to secure the installation area of the buried object, and the inside of the box culvert 58 is continuous from the road 60 described above. It becomes pass road 59. The above-described embedded object 51 is disposed on the top of the top plate of the box culvert 58.

  Therefore, when the box culvert 58 is constructed, it is necessary to sufficiently check the burial position, for example, by performing trial digging in advance. In addition, during the construction of the retaining walls 53, 53, construction is performed avoiding these underground objects 51, and during the subsequent installation of the cut beams and internal excavation, the underground objects 51 are suspended using the beams. Protect.

  Next, as shown in FIG. 17, the retaining walls 53, 53, the lining plate 54 and the suspension member 56 are removed, and the soil 55 is backfilled around the box culvert 58. Thereby, the embedded object 51 is held in a state of being embedded above the box culvert 58. In this way, after securing an area for installing and burying the underground buried object 51 that was protected and cured during the construction, it was finally relocated.

Note that underpass roads are constructed at the intersections of congested roads because secondary traffic congestion occurs due to construction, so it is necessary to avoid daytime construction as much as possible.
JP 2006-2399 A

  In the conventional construction method of the underpass road, it is necessary to avoid the underground buried object 51 including the communication cable, the electric wire, the gas pipe, and the water pipe when the mountain retaining walls 53 and 53 are constructed. Due to the necessity of securing 51 installation areas, there was a problem that the excavation range of the ground for the construction of the underpass road became large.

  Further, in the conventional construction method such as an underpass road, it is necessary to protect, cure, or inspect and manage the buried object 51 throughout the construction period. However, when excavating the soil 55 between the retaining walls 53, 53, Since the object 51 is suspended from the lining plate 54 and is exposed in the space 57, there is a possibility that it may be damaged due to a sudden cause, for example, an excavator or the like collides with the embedded object 51.

  This invention is made in view of such a problem, and when constructing a new structure in the lower part of the road where existing underground objects such as pipes storing communication cables, electric wires, etc., water pipes, etc. exist In addition, it is possible to provide a method for moving buried objects that can reduce the overall construction period by avoiding complicated work while protecting and curing the buried objects and reducing the excavation range. Let it be an issue.

In order to solve the above-mentioned problems, the present invention cuts a part of a road where existing underground buried objects including communication cables, electric wires, gas pipes, and waterworks pipes exist in the ground, and When building a given structure,
A step of installing a buried object boxes with can be inserted through portions of the front SL buried object along the road,
Transferring the buried object in the penetrating portion of the buried object box;
Forming a mountain retaining wall that intersects the road along both sides of the ground of a portion where a predetermined structure is to be constructed;
A process of excavating the retaining wall to construct a predetermined structure;
Only including,
The buried box is provided with a cradle along the longitudinal direction of the buried box, on which the buried object including communication, electricity, gas, and water supply is classified and placed according to the purpose and application. The embedded objects are placed on a table and classified and stored .

  Note that various structures can be assumed, and examples include roads, railway tracks, underground structures such as underground shopping malls, and the like.

The relocation method of buried objects of the present invention, prior SL buried object boxes steel pipe excellent in rigidity lightweight, may in particular use of the square tube.

  Furthermore, in order to secure road traffic during the construction period, it may be necessary to cover the mountain retaining wall. When performing such lining, it is possible to place a lining material on the buried object box using the buried object box supported by the foundation as a foundation.

  In this way, labor saving and shortening of the construction period can be realized.

  In the method for transferring a buried object according to the present invention, an inspection hatch can be provided in the buried object box. Conventionally, if it was buried in the ground, it had to be dug up for inspection, but if it was housed in this box for buried objects, it can be easily inspected because of the hatch for inspection.

  According to the method for relocating a buried object of the present invention, the buried box is installed in advance, and the buried object in the ground that becomes an obstacle to the construction is excavated before excavating the soil (inner soil) between the retaining walls. Therefore, it is not necessary to relocate underground objects after excavating the soil between the retaining walls (inner soil), and the time required for constructing the underpass road is shortened compared to the conventional method.

  In addition, there is no need for protection and curing during construction by transferring the buried objects buried in the intersection or the buried objects crossing the underpass road to the previously installed buried boxes. Because it is relocated to the final relocation site, there is little risk of damage.

Further, in the present invention, before excavating the soil between the retaining walls, a portion passing through the intersection of the buried objects provided on the road other than the road that should be the underpass road is placed on the retaining wall. Since it is moved into the through hole of the buried object box, the buried object is protected by the buried object box when excavating the soil (inner soil) between the retaining walls. Therefore, curing of the buried object is not necessary.

  Furthermore, in the present invention, when excavating the soil between the retaining walls (inner soil), the buried object is protected by the protection member, so that curing of the buried object becomes unnecessary.

  Furthermore, in this invention, since a buried thing can be protected only by using the box for buried objects which has a through-hole, a structure can be simplified.

  The constituent elements described above can be combined with each other without departing from the gist of the present invention.

  As described above, according to the present invention, it is not necessary to cure the buried object when excavating the soil between the retaining walls, so that the curing member and the curing work can be reduced.

  In addition, since the existing buried object is stored in the buried object box, the installation area for the buried object, which was necessary in the past, can be greatly reduced, resulting in a reduction in the excavation range for constructing the structure. As a result, the overall construction period can be shortened and the construction cost can be reduced.

Hereinafter, a method for moving a buried object at an underpass road intersection according to an embodiment of the present invention will be described in detail with reference to FIGS.

[Underpass road]
First, the underpass road 10 of this Embodiment is demonstrated. As shown in FIG. 1, the underpass roads 10 and 10 of the present embodiment are two lanes, an up lane and a down lane. The two-lane underpass roads 10 and 10 are provided with concrete bottom slabs 11 and 11, respectively.

  Self-supporting mountain retaining walls 12 and 12 are provided on both sides of the two-lane underpass roads 10 and 10, respectively. In the present embodiment, a mountain retaining wall 13 is also provided between the two-lane underpass roads 10 and 10.

  The mountain retaining wall 13 is used as a mountain retaining when the underpass roads 10 and 10 are constructed. However, the mountain retaining wall 13 is left as it is even after the underpass roads 10 and 10 are completed, and the upstream lane is left. And used as a partition for the down lane.

  The above-mentioned retaining walls 12 and 13 are configured such that, for example, steel pipes having a diameter of 800 mm are arranged side by side with substantially no gap and function as a steel pipe sheet pile (see FIG. 3). Moreover, the interior board 15 is each affixed on the inner surface of the mountain retaining walls 12 and 12 of both sides, and the both side surfaces of the central mountain retaining wall 13 (refer FIG. 1).

  On the mountain retaining walls 12, 12 on both sides and the central mountain retaining wall 13 at the intersection of the underpass roads 10, 10, a road 49 intersecting with the underpass roads 10, 10 passes above the underpass roads 10, 10. For this purpose, a lining 17 is provided. On the other hand, the portions other than the intersections are free from the upper side without the lining 17 (see FIG. 3).

The lining 17 is formed by connecting two square steel pipe decks 18 having a length slightly longer than the width of the underpass road (upward lane side or down lane side) 10 in the longitudinal direction. They are arranged in a substantially orthogonal direction without gaps and paved on the square steel pipe decks 18, 18.

[Box for buried objects]
And, as shown in FIG. 3, the buried object box 20 for storing the buried object 51 in the ground including communication, electricity, gas, and waterworks is a predetermined distance (for example, 3 m) from the intersection of the underpass roads 10 and 10. A plurality (two in FIG. 3) are provided so as to cross the underpass road at the disengaged portion. The buried object boxes 20 and 20 are made of a square steel pipe of about 800 mm × 800 mm, which is relatively easy to obtain, lightweight and excellent in rigidity (may be made of concrete), and the underground buried objects 51 are collectively or Some of them are classified and stored.

  That is, the embedded objects 51 (51a to 51g) stored in the embedded object box 20 are classified and stored according to the purpose and application as shown in FIG. It suspends via each receiving stand 20a-20g. That is, the cradle 20a-20e which consists of a rectangular steel plate is fixed to the left side inside the buried object box 20 along the longitudinal direction inside the buried object box 20, and each cradle 20a-20e is used for the purpose and application. Accordingly, for example, buried objects 51a to 51e having relatively small diameters such as electricity and communication are classified and stored. In addition, along the longitudinal direction inside the buried object box 20, pedestals 20f, 20g made of rectangular steel plates are fixed to the right side inside the buried object box 20, and each of the cradle 20f, 20g has a relatively large diameter. The buried objects 51f and 51g such as water pipes and gas pipes are classified and stored.

[Fundamental box basics]
When the installation position of the buried object boxes 20 and 20 is set to a position deviating from the intersection, the underpass road is completed when the underpass road is completed.

  Further, the buried object boxes 20 and 20 are buried in advance before the soil (internal soil) excavation work between the mountain retaining walls of the underpass roads 10 and 10. And when the underpass roads 10 and 10 are constructed, the buried object box 20 is supported on the basis of the steel pipes used for the retaining walls 12, 13 and 12.

  Furthermore, when the buried object box 20 is supported by the retaining walls 12, 13, 12, the buried object box 20 is placed via the box receiving beam 21 as shown in FIGS. 1 and 2A. To do.

  Next, a construction method for the underpass road 10 will be described, and a method for moving the buried object will be described therein. Here, the case where one underpass road (upline side) 10 is constructed will be described, but the same applies to the case where the other underpass road (downline side) 10 is constructed.

  As shown in the construction flow chart of FIG. 4, the construction method of the underpass road 10 according to this embodiment includes a step of partially restricting traffic, a step of installing a buried box and a step of moving a buried item, a simple mountain retaining step, Steel pipe sheet pile placing process, pedestal installation process, floor slab installation part excavation process, square steel pipe floor slab installation process, internal excavation process, backfilling process around the floor slab installation part, traffic control is completely released and released Install in order of process.

  That is, after the step of partially restricting traffic, the installation of the box for buried objects and the process of moving the buried objects are performed.

(Installation of buried object boxes and relocation process of buried objects)
In this relocation process, the buried object box 20 that stores the buried object 51 crosses the underpass road at a position that is off a predetermined distance (for example, 3 m) from the intersection of the underpass roads 10 and 10, as shown in FIG. Install two so that it does.

  And when installing this box 20 for buried objects, as shown in FIG.1 and FIG.2 (a), the box 20 for buried objects crosses the underpass roads 10 and 10 beforehand via the box receiving beam 21. FIG. To be placed.

  Next, the underground buried objects 51 are stored in the buried object box 20 in a lump or some of them are classified.

  That is, the embedded objects 51 (51a to 51g) stored in the embedded object box 20 are classified and stored according to the purpose and application as shown in FIG. Suspend downward via the respective cradles 20a to 20g.

(Partial traffic regulation process / Simple mountain retaining process)
Next, after partially restricting traffic on the road to be the underpass road 10, a simple mountain retaining 40 (see FIG. 5) is constructed along the position where the mountain retaining wall is installed. In this simple mountain retaining process, for example, a groove having a width of 3 m and a depth of 1 m is excavated along the position where the mountain retaining walls 12, 13, 12 (see FIG. 1) are installed on the road to be the underpass road 10. Install sheet piles on the excavated wall without any gaps.
(Steel pipe sheet pile placing process)
Next, as shown in FIG. 5, a plurality of steel pipes 14 are driven at the position of the simple mountain retaining 40 to provide self-supporting mountain retaining walls 12 and 13. The steel pipes 14 are driven side by side with substantially no gap to form a steel pipe sheet pile, and for the placement of the steel pipe 14, an all-round turning pile driver 34 or the like is used.
(Pedestal installation process)
Next, as shown in FIG. 6, the base 61 is installed in the head of a steel pipe sheet pile. Further, the pedestal 61 is formed with a groove on the top for placing the square steel pipe deck 18.
(Excavation process of floor slab installation part)
Next, as shown in FIG. 7, the floor slab installation part between the simple mountain retaining on the mountain retaining wall 12 side and the simple mountain retaining on the mountain retaining wall 13 side is excavated to a predetermined depth.
(Installation process of square steel pipe deck)
As shown in FIG. 8, the square steel pipe floor slab 18 is installed between the pedestals 61 and 61 without a gap. The square steel pipe floor slab 18 is placed on the top of the pedestal 61.

  As shown in FIG. 9, lining is performed such as paving on the upper surface of the square steel pipe floor slab 18 that is installed without gaps, and the installation of the floor slab portion of the upside underpass road 10 is completed.

  Next, the floor slab portion of the down line side underpass road 10 is constructed. This construction is similar to the construction method described in the construction of the floor slab portion of the up-line side underpass road 10, a process for partially restricting traffic, a simple mountain retaining process, a steel pipe sheet pile placing process, a pedestal installing process, a floor It is constructed in the order of the excavation process of the plate installation section and the installation process of the square steel pipe deck.

FIG. 10 shows a state where the installation of the floor slab portion of the down line side underpass road 10 is completed.
(Internal drilling process)
As shown in FIG. 11, the soil between the steel pipe sheet pile (mountain wall 12) and the steel pipe sheet pile (mountain wall 13) is excavated, and the upward line side underpass road 10 portion is opened. At that time, excavation is performed with an appropriate gradient so that the depth gradually decreases as the distance from the intersection increases. Next, the soil between the steel pipe sheet pile (mountain wall 13) and the steel pipe sheet pile (mountain wall 12) is excavated, and the downward line side underpass road 10 portion is opened. Also in this case, similarly to the up line side, excavation is performed with an appropriate gradient so that the depth gradually decreases as the distance from the intersection increases.
(Refilling process around the floor slab installation area / Process to completely release and release traffic restrictions)
As shown in FIG. 1, concrete bottom slabs 11 and 11 are laid on underpass roads 10 and 10 provided in two rows of up and down, respectively. And the interior board 15 is affixed on the inner surface of the mountain retaining walls 12 and 12 of both sides, and the both sides of the central mountain retaining wall 13, respectively. Furthermore, after the excavation around the floor slab installation section, it will be backfilled, and traffic restrictions will be completely released and released.
(Effect of installation of the box 20 for buried objects)
In conventional underpass road construction, when transferring underground objects during construction, it must be carried out with construction of a mountain stop, internal excavation, or temporarily suspended, for the construction of an underpass road. An enormous period (work period) was required.

  In the method for relocating a buried object according to the present embodiment, the buried object box 20 is installed in advance in the intersection of the underpass road intersection or in a part off the intersection, and before excavating the soil (inner soil) between the retaining walls. Since the underground object that obstructs the construction is relocated in the burying box 20, it is not necessary to relocate the underground object after excavating the soil (internal soil) between the retaining walls. Therefore, the period required for the construction of the underpass road is shortened compared to the conventional method.

  Excavation between the retaining walls in the underground box embedded in the intersection or underpass road in the underground box 20 to be installed in advance. By relocating in advance, there is no need for protection and curing during construction, and since these are relocated in advance to the final relocation site at the initial stage of construction, there is little risk of damage.

  In addition, as shown in FIG. 12, when the buried object box 20 is used, the space for the buried object can be reduced as compared with the conventional case, so that the space for the buried object can be compressed and the road board of the underpass road can be constructed at a shallow position. . In other words, when the buried object box 20 is installed, a depth of 2.5 m or more (earth cover) for the installation of the underground buried object at the upper part of the box culvert is not required, and as a result, the roadbed depth of the road is reduced. It can be shallow and the length of the underpass road can be shortened. Therefore, when the embedded box 20 is installed, the underpass section length L2 (see FIG. 12B) of the above-described embodiment is compared with the section length L1 of the conventional method shown in FIG. Can be shortened. In particular, when a plurality of buried object boxes 20 are provided at positions deviated from the intersection, each buried object box 20 can be further reduced in size, and the installation space for the buried object is further reduced.

In the above-described embodiment, the case where the installation position of the buried object box 20 is set at a predetermined distance from the intersection (see FIG. 3) has been described. However, the installation position of the buried object box 20 is located inside the intersection. You may provide in a position. Next, another embodiment in which the installation position of the buried object box 20 is provided at a position inside the intersection will be described with reference to FIGS. 13 and 2B. In addition, the code | symbol used in FIG.13 and FIG.2 (b) and the code | symbol same as the code | symbol used in the above-mentioned embodiment has the same function, The detail of the description is abbreviate | omitted.
(Another embodiment)
In another embodiment, the buried object box 20 for storing underground buried objects 51 including communication, electricity, gas, and waterworks is located inside the intersection of the underpass roads 10 and 10 as shown in FIG. One is provided so as to cross the underpass road. This embedded object box 20 is made of a square steel pipe, as in the above-described embodiment, and stores the underground embedded objects 51 collectively or some of them.

That is, the embedded objects 51 (51a to 51g) stored in the embedded object box 20 are classified and stored according to the purpose and application as shown in FIG. It suspends via each receiving stand 20a-20g. That is, the cradle 20a-20e which consists of a rectangular steel plate is fixed to the left side inside the buried object box 20 along the longitudinal direction inside the buried object box 20, and each cradle 20a-20e is used for the purpose and application. Accordingly, for example, buried objects 51a to 51e having relatively small diameters such as electricity and communication are classified and stored. In addition, along the longitudinal direction inside the buried object box 20, pedestals 20f, 20g made of rectangular steel plates are fixed to the right side inside the buried object box 20, and each of the cradle 20f, 20g has a relatively large diameter. The buried objects 51f and 51g such as water and gas are classified and stored.

[Fundamental box basics]
When the installation position of the buried object box 20 is set to a position inside the intersection, when the underpass road is completed, the upper side of the road is crossed. Therefore, the buried object box 20 is buried in advance before the soil (internal soil) excavation work between the mountain retaining walls of the underpass roads 10 and 10. And when burying this buried object box 20, as shown in FIG.2 (b), the buried object box 20 is supported on the basis of the steel pipe used for the mountain retaining walls 12,13,12. Further, the buried object box 20 is placed in advance so as to cross the underpass roads 10 and 10. The buried object box 20 is placed on the mountain retaining walls 12 and 13 via the box receiving beams 21.

  Further, when the steel material for lining is placed, the buried object box 20 and the box receiving beam 21 supported by the foundation (mounting walls 12, 13, 12) are also used as the foundation, and the buried object box 20 A steel material for lining is placed on (see FIG. 2B).

In addition, in the transfer method of the buried object of the underpass road intersection of the present invention, an inspection hatch (not shown) can be provided in the buried object box. Conventionally, if buried in the ground, it was necessary to dig up a buried object such as a communication cable for inspection, but if it is stored in this buried object box, there will be a hatch for inspection and it will be easy. Inspection is possible.

It is a front view of the underpass road in the intersection of a 1st embodiment concerning the present invention. It is a figure which shows the state which is supporting the box for buried objects by the foundation, Fig.2 (a) shows the foundation of the box for buried objects of 1st Embodiment, FIG.2 (b) is the embedding of another embodiment. The basics of the material box are shown. It is a perspective view which shows the structure of the underpass road in the intersection of 1st Embodiment which concerns on this invention. It is process drawing which shows the construction method of the underpass road in the intersection of 1st Embodiment which concerns on this invention. It is a figure which shows the construction method of the underpass road in the intersection of 1st Embodiment which concerns on this invention, and is a figure which shows the placement process of a steel pipe sheet pile. It is a figure which shows the construction method of the underpass road in the intersection of 1st Embodiment which concerns on this invention, and is a figure which shows the installation process of a base. It is a figure which shows the construction method of the underpass road in the intersection of 1st Embodiment which concerns on this invention, and is an excavation process figure of a floor slab installation part. It is a figure which shows the construction method of the underpass road in the intersection of 1st Embodiment which concerns on this invention, and is an installation process figure of a square steel pipe deck. It is a figure which shows the construction method of the underpass road in the intersection of 1st Embodiment which concerns on this invention, and is a floor slab installation completion figure by the side of an up lane. It is a figure which shows the construction method of the underpass road in the intersection of 1st Embodiment which concerns on this invention, and is a construction process figure of the floor slab on the down lane side. It is a figure which shows the construction method of the underpass road in the intersection of 1st Embodiment which concerns on this invention, and is an internal excavation process figure. It is a comparison figure of the underpass section length in the conventional construction method and the construction method of a 1st embodiment. It is a perspective view which shows the structure of the underpass road in the intersection of another embodiment which concerns on this invention. It is a figure which shows the embedment embed | buried in the general road. It is a figure which shows the construction method of the underpass road in the intersection which concerns on a prior art example, and is sectional drawing which shows the curing method of an embedded object. It is a figure which shows the structure of the underpass road in the intersection which concerns on a prior art example, and is sectional drawing which shows the installation method of a box culvert. It is sectional drawing which shows the positional relationship of the box culvert which comprises the underpass road which concerns on a prior art example, and an embedded object. It is a box culvert which constitutes an underpass road concerning a conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Underpass road 11 Concrete bottom slab 12, 13 Retaining wall 14 Steel pipe 15 Interior board 17 Covering 18 Square steel pipe floor slab 20 Box 21 for buried objects Box receiving beam 30 Road 31 which should be underpass road Soil 49 Crossing with underpass road Road 50 Road 51 (51a to 51g) Buried object 52 Steel sheet pile 53 Retaining wall 54 Covering 55 Earth 56 Suspension member 57 Space 58 Box culvert 59 Underpass road 60 Road 61 crossing the underpass road

Claims (3)

When excavating a part of a road where existing underground buried objects including communication cables, electric wires, gas pipes, and water pipes exist in the ground, and building a predetermined structure below this road,
A step of installing a buried object boxes with can be inserted through portions of the front SL buried object along the road,
Transferring the buried object in the penetrating portion of the buried object box;
Forming a mountain retaining wall that intersects the road along both sides of the ground of a portion where a predetermined structure is to be constructed;
A process of excavating the retaining wall to construct a predetermined structure;
Only including,
The buried box is provided with a cradle along the longitudinal direction of the buried box, on which the buried object including communication, electricity, gas, and water supply is classified and placed according to the purpose and application. A method for relocating an embedded object , wherein the embedded object is placed on a table and classified and stored . The method for transferring an embedded object according to claim 1, wherein the box for embedded object is a steel pipe . When carrying out lining to ensure road traffic during the construction period, the laying material is placed on the burying material box using the burying material box supported by the foundation as a foundation. The method for moving a buried object according to claim 1 or 2 .

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