JP4816960B2 - Pile head chiseling basket - Google Patents

Description

  The present invention relates to a basket that forms a scaffold during pile head chipping work.

  The pier 1 shown in FIG.4 and FIG.5 is a harbor structure provided with the pile 2 as a support body. Specifically, it consists of a pile head 3, a beam portion 4 that connects the pile heads 3 of adjacent steel pipe piles 2, and a floor slab portion 5 that covers the beam portion 4 and the pile head 3 from above. The superstructure 10 has a structure supported by each pile 2. The pile 2 is formed of a cylindrical steel pipe, and a plurality of the piles 2 are erected at equal intervals in the longitudinal direction and the width direction of the pier 1. Moreover, the pile head 3 is formed in the polygonal column shape of predetermined thickness by the concrete at the upper end of each pile 2, and the beam part 4 is also formed in the substantially square pillar shape by concrete. And the plate-shaped floor slab part 5 which consists of concrete is formed in the upper surface of each pile head 3 and each beam part 4, and the concrete pavement 6 is given to the upper surface of the floor slab part 5 (for example, patent) Reference 1).

Japanese Patent Laying-Open No. 2006-169769 ([0015], FIGS. 1 and 2)

Now, when the pier 1 is aged and deteriorated, after considering the conditions, the whole is dismantled and a new pier 1 is constructed, and only the superstructure 10 is removed leaving the pile 2 In some cases, a new superstructure 10 is constructed on the existing pile 2. And in any case, when the pile head 3 needs to be broken, it is necessary to install a scaffold in order to carry out the peeling work smoothly. Therefore, in order to improve work efficiency, it is desirable that the scaffold installation work and removal work be performed smoothly.
The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to smoothly carry out the chipping work of the pile head in the removal work of the superstructure, and to install and remove the work platform for the cutting work. Is to make it easier to do.

(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

  (1) A floor board in which an opening for inserting a pile is formed, a cylindrical pile band extending downward from the lower surface of the floor board along the opening, and a fence extending upward along the outer periphery of the floor board And a pile head chipping work basket comprising a scaffold placed on the fence, wherein the floor board, the pile band, and the fence are separated by a longitudinal section passing through the center of the opening of the floor board. A pile head chipping work basket in which the upper ends of one of the divided and divided two fences are pivotally attached by a pivot (claim 1).

  The pile head chiseling basket described in this section is a state where the pile is inserted into the opening of the floor board, and the pile is clamped by a pile band extending downward from the lower surface of the floor board, so that the floor board is attached to the cylindrical wall surface of the pile. It is to be fixed. In addition, a fence extending upward along the outer periphery of the floor board is provided, and by placing the scaffold on the fence, a scaffold for smoothly carrying out the chiseling work at an appropriate height around the pile head. It becomes possible to install.

  In addition, the floor board, the pile band, and the fence are divided into two by a longitudinal section passing through the center of the opening of the floor board, and the upper ends of the two divided fences and the other fence are pivotally attached by a pivot. Therefore, when installing the scaffolding to the pile head, hang the two-piece pile head chiseling basket with a crane and cover the pile head with the lower part open around the pivot. After that, by closing one and the other of the two divided baskets, the pile can be clamped by a pile band extending downward from the lower surface of the floor board. In this way, by clamping the pile with a pile band, the pile head chipping basket is fixed to the pile, so that the pile is not damaged with the installation of the scaffold. Moreover, the pile head is in a state of being held in the pile head chipping basket, and the operator can perform the chiseling work of the pile head smoothly in the basket. Also, when removing the scaffold from the pile head, the removal work is completed by lifting the bottom of the two-piece pile head chiseling basket with the crane open with the pivot at the center. Can do.

(2) A pile head chiseling basket in which a fishing rod for hanging a wire is provided on the pivot and the one of the two divided fences and the other fence, respectively (Claim 2).
The pile head chiseling basket described in this section is provided on the pivot because the fishing rod for hanging the wire is provided on each of the pivot and one of the two divided fences and the other fence. By hanging the wire of the main winding crane on the fishing rod and hanging the wire of the child winding crane on the fence of each divided part, the pile head chiseling basket is suspended, It is possible to open and close one of the divided parts and the other.
In addition, if it is supposed that a wire is directly hung on one of the pivots and one of the two fences and the other, the fishing rod becomes unnecessary. In this case, the pivot and the fence itself become the wire hanging portion.

(3) A pile head chiseling basket provided with a peripheral wall surrounding the upper surface of each of the two divided floor plates.
The pile head chipping basket described in this section is dropped from the pile head by the chiseling work because each floor board forms an open box shape by the peripheral wall surrounding the upper surface of each of the one and the other divided floor boards. The concrete glass can be received on the floor board and can be prevented from falling off the floor board. Moreover, when the basket is removed from the pile head after the chiseling operation is finished, even if the lower part of the divided basket is opened around the pivot, the concrete wall on the floor board is dropped by the peripheral wall. Can be prevented. That is, the pile head chipping work basket functions not only as a scaffold for the chipping work but also as a means for collecting and transporting the concrete chips.

(4) A pile head chipping work basket in which the one and the other divided floor plates and the fence can be appropriately separated (claim 4).
The basket for chiseling of the pile head described in this section removes one and the other divided floor boards from each fence, and attaches a floor board with openings for different pile diameters to the pile. It is intended to give versatility to the head chiseling basket.

(5) The pivot is made of a saddle that passes through the center of the opening of the floor board, and is strong enough to receive the weight of the pile head chipping work basket and the concrete glass when placed on the top of the pile. Pile head chipping basket with
The pile head chipping basket described in this section is installed on the pile by clamping the pile with a pile band that extends downward from the bottom surface of the floorboard with the pivot placed on the top of the pile. The weight of the pile head chipping work basket and the generated concrete glass is received by the pivot.

(6) In the above paragraph (5), the pile band is a chiseling basket for chiseling the pile head that exhibits a binding force that can prevent the one and other floor plates and the other of the two divided floor plates from being opened. .
The pile head chipping basket described in this section has a strength that allows the pivot to receive the weight of the pile head chipping work basket and the concrete glass, and the pivot is placed on the top of the pile. It is not always necessary to fix the pile head chipping basket to the pile only by clamping the pile with the pile band. Therefore, the pile band is simplified as one that exhibits a binding force that can prevent the opening of the one and the other divided floor plates and the fence.

  Since this invention was comprised in this way, it becomes possible to perform the chiseling work of the pile head in the removal work of a superstructure smoothly. In addition, it is possible to more easily install and remove the chipping work scaffold.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the pile head chipping basket 12 according to the embodiment of the present invention includes a floor plate 14 in which an opening 15 for inserting the pile 2 is formed, and a lower surface of the floor plate 14. A cylindrical pile band 16 extending downward along the opening 15, a fence 18 extending upward along the outer periphery of the floor board 14, and a scaffold 20 placed on the fence 18. And the floor board 14, the pile band 16, and the fence 18 are each divided | segmented into the floor boards 14A and 14B, the pile bands 16A and 16B, and the fences 18A and 18B by the longitudinal cross section which passes along the center of the opening 15 of the floor board 14. ing. Furthermore, the upper ends of the two fences 18 </ b> A and the other fence 18 </ b> B are pivotally attached by a pivot 22. Further, fishing rods 24 and 26 for hanging wires 42 and 44 are provided on the pivot 22, one rail 18 </ b> A, and the other rail 18 </ b> B, respectively.

  The floor plate 14 is a rectangular steel plate provided with a notch for forming the opening 15. Then, as shown in FIGS. 2 (e) and 2 (g), floor boards 14 having different diameters of the openings 15 are appropriately selected, and the pile head chipping basket 12 is assembled. The diameter of the opening 15 is determined in accordance with the diameter of the pile 2 that performs the chiseling operation. A plurality of types of floor boards 14 having the openings 15 having different diameters are prepared in advance, and appropriately fixed to the fence 18. Also good. The floor plate 14 and the fence 18 are fixed by welding, bolts, or the like.

  Moreover, the pile band 16 is comprised by dividing a cylindrical steel pipe into two in the axial direction. And the upper end part of the pile band 16 is fixed to the lower surface of the floor board 14 along the opening 15, and the lower end part is supported by the reinforcing stay 28 fixed to the floor board 14. Furthermore, the flange 30 (FIG. 1 (a), FIG.2 (d)) for bolt-fixing pile band 16A, 16B is provided along the edge part which the two divided pile bands 16A, 16B face each other. Yes.

Further, as shown in FIGS. 1 (a), 1 (b), 2 (a) and 2 (b), the fence 18 is constituted by a column 19a and a horizontal beam 19b made of a bar 19 such as a square bar or L-shaped steel. Has been. The two divided fences 18A and 18B can be bolted to each other along the opposing ends.
FIG. 1 shows an example in which the horizontal beam 19b is provided in two upper and lower stages, and FIG. 2 shows an example in which the horizontal beam 19b is provided in three upper and lower stages. The height and the number of steps of the cross beam 19b are appropriately determined according to the dimensions of the pile 2 and the pile head 3 that perform the chiseling operation.

As shown in FIG. 2 (f), the scaffold 20 is formed by stretching a sheet material 34 such as a mesh plate or punching metal on a frame 32 formed by intersecting bars such as square bars and L-shaped steel. There is an opening 36 through which the pile 2 is inserted. Although the illustrated opening 36 is rectangular, the shape and the opening area of the opening 36 are determined so that the concrete glass falling from the pile head 3 by the chipping work falls on the floor plate 14. The sheet material 34 has an outer shape that fits further inside the horizontal beam of the fence 18, and the frame 32 is formed to have a length that protrudes from a range surrounded by the horizontal beam 18 b of the fence 18.
The scaffold 20 is placed on the cross beam 19b of the fence 18 and fixed, so that the scaffold 20 is placed on the pile head chipping work basket 12 as shown in FIGS. 2 (b) and 2 (d). Installed. In addition, since the horizontal beam 19b of the fence 18 is provided in several stages, by changing the position of the horizontal beam 19b on which the scaffold 20 is placed according to the position of the pile head 3 and the progress of the chiseling work, It is possible to install the scaffolding 20 at a height at which it is always easy to perform a chiseling operation.

  Further, as shown in FIGS. 1 (a), (b), 2 (b), and (c), a peripheral wall made of a steel plate so as to surround the upper surface of each of the two divided floor plates 14A and 14B. 38 is provided. The peripheral wall 38 is provided in each floor plate 14A, 14B without a break so as to avoid the opening 15, so that each floor plate 14A, 14B has an open box shape.

When carrying out the chiseling work on the pile head 3 of the pier 1 using the pile head chiseling basket 12 having the structure as described above, the floor slab portion 5 and the beam constituting the superstructure 10 of the pier 1 The part 4 is removed, and as shown by a solid line in FIG. 3, the pile head chipping work basket 12 is installed in one pile 2 in a state where only the pile 2 and the pile head 3 protrude from the water surface. In the example shown in FIG. 1, since a part of the pile head chipping work basket 12 is submerged, fixing work of the one divided 12A and the other 12B (pile bands 16A and 16B are bolted together) Work) is a diving work.
The operator rides on the scaffold 20 in the pile head chipping basket 12 and performs the chipping work of the pile head 3. At this time, the concrete glass falling from the pile head 3 falls and accumulates on the floor board 14. Then, after the chipping work is finished, the basket 12 is removed from the pile 2 and moved to a land storage place, and the concrete waste is wholesaled to the place. Then, the operation of moving the basket 12 to the next pile 2, installing the basket 12 on the pile 2, and performing the chiseling work of the pile head 3 is repeated. At this time, for example, a floating scaffold 40 can be used as the worker's communication path to the basket 12 installed in the pile 2.

The effects obtained by the embodiment of the present invention having the above-described configuration are as follows.
The pile head chipping basket 12 according to the embodiment of the present invention clamps the pile 2 by a pile band 16 extending downward from the lower surface of the floor plate 14 with the pile 2 inserted through the opening 15 of the floor plate 14. By doing so, the floor board 14 is fixed to the cylindrical wall surface of the pile 2. Moreover, the fence 18 extended upwards along the outer periphery of the floor board 14 is provided, By fixing the scaffold 20 (FIG.2 (f)) to the fence 18, the appropriate height around the pile head 3 is obtained. It is possible to install the scaffold 20 for smoothly performing the chiseling work. Moreover, when the scaffold 20 interferes with the chipping work, the workability can be improved by removing the scaffold 20 from the fence 18 (that is, selectively used).

In addition, the pile head chipping work basket 12 includes a floor plate 14, a pile band 16, and a fence 18 divided into two by a longitudinal section passing through the center of the opening 15 of the floor board 14, and one fence 18A divided into two. 1 and the other fence 18B are pivotally attached to each other by the pivot 22, so that when the scaffold 20 is installed on the pile head 3, as shown in FIG. After the pile head chipping work basket 12 divided into two parts is suspended by a crane and covered on the pile head 3 in a state where the lower part is opened with the pivot 22 as the center, as shown in FIG. The pile 2 can be clamped by the pile bands 16A and 16B by closing one of the divided baskets 12A and the other 12B.
Thus, by clamping the pile 2 with the pile bands 16 </ b> A and 16 </ b> B, the pile head chipping basket 12 is fixed to the pile 2, so that the pile 2 is not damaged with the installation of the scaffold. Moreover, the pile head 3 is in a state of being held in the pile head chipping basket 12, and the operator can perform the chipping work of the pile head 3 smoothly in the basket 12. Also, when removing the scaffold from the pile head 3, it is removed by lifting the bottom of the two divided pile head chiseling baskets 12 </ b> A and 12 </ b> B with the crane 22 opened around the pivot 22. Work can be completed.

  Further, the pile head chipping work basket 12 is provided with fishing rods 24 and 26 for hanging wires 42 and 44 on the pivot 22 and one of the two fences 18A and the other fence 18B, respectively. Then, the main winding crane wire 42 is hung on the fishing bracket 24 provided on the pivot 22, and the child winding crane wire 44 is hung on the fishing rod 26 of each of the divided rails 18 </ b> A and 18 </ b> B, thereby the pile head. It is possible to open and close one of the two divided parts 12A and the other 12B around the pivot 22 in a state in which the partial chipping work basket 12 is suspended.

  Further, in the pile head chipping work basket 12, each floor plate 14A, 14B has an open box shape by a peripheral wall 38 surrounding the top surface of each floor plate 14A, 14B of one divided 12A and the other 12B. Therefore, the concrete glass falling from the pile head 3 by the chiseling work is received as much as possible on the floor boards 14A and 14B, and the concrete glass fall from the floor boards 14A and 14B can be prevented, and the concrete glass collection work in water Will be greatly reduced. Moreover, when the pile head chipping work basket 12 is removed from the pile head 3 after completion of the chipping work, as shown in FIG. 1 (a), below the two divided baskets 12A and 12B, Even when the pivot 22 is open as a center, the peripheral wall 38 can prevent the concrete glass on the floor plates 14A and 14B from falling. That is, the pile head chipping work basket 12 functions not only as a scaffold for the chipping work but also as a means for collecting and transporting the concrete chips.

In the embodiment of the present invention, the pivot 22 is constituted by a saddle that passes through the center of the opening 15 of the floor plate 14 and the pivot 22 is placed on the top end of the pile 2. You may comprise as what has the intensity | strength which can receive the weight of the concrete glass falling from the basket 12 for head chipping | working work, and the pile head 3.
In this case, with the pivot 22 placed on the top of the pile 2, the pile 2 is clamped by the pile band 16 extending downward from the lower surface of the floor plate 14, so The weight of the working basket 12 and the generated concrete glass is received by the pivot 22 and installed in the pile 2.

The specific usage example is as follows. For example, before installing the pile head chipping work basket 12 on the pile head 3, the chipping work for exposing the top edge of the pile 2 from the pile head 3 is performed, and the exposed top edge of the pile 2 is directly The pivot 22 is placed. And the crane work in the case of an installation work can be shortened by performing the operation | work which clamps the pile 2 with the pile band 16 in the state which removed the wires 42 and 44 from the fishing rods 24 and 26. FIG. Similarly, when the pile head chipping basket 12 is removed, the crane band can be shortened by hooking the wires 42 and 44 to the fishing rods 24 and 26 after releasing the clamp of the pile band 16. Can be planned.
Furthermore, a spacer such as an H-shaped steel or other reinforcing material is placed on the top end of the pile 2 (fixed to the top end of the pile 2 using a fixing tool such as a bolt if necessary) and pivoted on the spacer. If 22 is mounted, it is possible to install the chiseling basket 12 relatively upward with respect to the top end of the pile 2. At this time, the pile band 16 is positioned on the water surface, and the diving work becomes unnecessary for the clamp work and the clamp release work of the pile 2 by the pile band 16. Therefore, the work for attaching and detaching the chiseling basket 12 is facilitated, and the crane work time can be shortened.

In addition, the pivot 22 has a strength capable of receiving the weight of the pile head chipping work basket 12 and the concrete glass, and the pivot 22 is placed on the top end of the pile 2. Only by clamping the pile with the band 16, it is not necessary to fix the pile head chipping basket to the pile 2.
Therefore, the pile band 16 may be simplified as the pile band 16 exhibiting a binding force that can prevent the floor plates 14A and 14B and the fences 18A and 18B of the one divided 12A and the other 12B from being opened. . In this case, the diameter of the opening 15 of the floor board 14 is not necessarily substantially equal to the diameter of the pile 2 and may be slightly larger than the pile 2.

In addition, the pile head chipping basket 12 is divided into two floor plates 14A and 14B of one divided 12A and the other 12B from the rails 18A and 18B, and a floor plate 14A in which openings for different pile diameters are formed. By attaching 14B to the fences 18A and 18B, the pile head chipping work basket can be provided with versatility.
In the embodiment of the present invention, the case where the pile head chipping work basket 12 is used for the chipping work of the pile head 3 of the pier 1 has been described as an example. However, the pile head according to another structure is described. It will be understood that the present invention can also be used for the chiseling operation.

It is a side view which shows the pile head chipping work basket which concerns on embodiment of this invention with a pile, (a) shows the state in installation work or removal work, (b) shows an installation completion state It is. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the pile head chipping | basket work basket which concerns on embodiment of this invention, (a) is a top view, (b) is a side view, (c) is AA sectional drawing, (d) is B -B sectional drawing, (e) is CC sectional drawing, (f) is a top view of a scaffold, (g) is CC sectional drawing concerning another example of a floor board. It is a top view which shows a mode that the basket for pile head chipping | working work which concerns on embodiment of this invention was used for the chipping work of the pile head of a pier. It is a perspective view which shows the general structure of a pier. It is a longitudinal cross-sectional view which shows the general structure of a jetty.

Explanation of symbols

  2: Pile, 3: Pile head, 4: Beam part, 12, 12A, 12B: Pile head chiseling basket, 14, 14A, 14B: Floor board, 15: Opening, 16, 16A, 16B: Pile band, 18, 18A, 18B: fence, 19a: pillar, 19b: cross beam, 20: scaffolding, 22: pivot, 24, 26: fishing bracket, 38: peripheral wall

Claims (4)

A floor board in which an opening for inserting a pile is formed; a cylindrical pile band extending downward from the lower surface of the floor board along the opening; a fence extending upward along the outer periphery of the floor board; A pile head chiseling basket comprising a scaffold placed on a fence, wherein the floor board, the pile band, and the fence are divided into two by a longitudinal section passing through the center of the opening of the floor board, A pile head chiseling basket characterized in that upper ends of one of the two divided fences and the other fence are pivotally attached to each other by a pivot. 2. The pile head chiseling basket according to claim 1, wherein a fishing rod for hanging a wire is provided on each of the pivot and the one of the two divided fences and the other of the fences. 3. A pile head chiseling basket according to claim 1 or 2, wherein a peripheral wall surrounding the upper surface of each of the two divided one and the other floor boards is provided. The pile head chipping work basket according to any one of claims 1 to 3, wherein the one and the other floor plates and the fence divided into two are separable as appropriate.

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