JPH0619123B2 - Work unit device for revetment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a work unit device such as a seawall used when constructing a wall surface such as a seawall.

[Prior Art] Generally, when constructing a temporary construction of a port, a river or the like, or a revetment of a main construction, a breakwater structure, a dike, etc., a sheet pile is struck on the bottom of the water to block the water and The water is drained, and a concrete wall is constructed on top of it to reclaim the land side.

By the way, since the above sheet pile is usually made of steel, for example, due to the ebb and flow of the tide, a portion particularly exposed to the atmosphere is strongly oxidized and corroded. Therefore, various works such as painting work and welding work of the sheet pile were performed to prevent the sheet pile from being damaged.

Conventionally, this kind of construction is done by forming a work space by placing a temporary sheet pile on the water side of the sheet pile, which is the target of construction, to block the water and draining the inside. Or, it was performed underwater by a diver.

[Problems to be Solved by the Invention] However, this type of conventional technique has the following problems.

In the construction method of placing a temporary sheet pile on the water side of the target sheet pile, the construction work can be done in the atmospheric environment, but the construction work of the temporary sheet pile is large, and the problem of increased construction cost there were.

In addition, in the case of underwater work by a diver, a special worker called a diver must be hired, which causes a problem that the construction cost increases.

Furthermore, underwater work by a diver requires special paints, underwater welding materials and equipment, etc., which not only increases material and equipment costs, but also makes it difficult for general people who do not have special skills There was a problem that it was difficult to confirm.

In addition, in Japanese Utility Model Laid-Open No. 48-71606, a sealing material is attached to a T-shaped member attached to an open side edge of a box frame (housing) whose one side surface and an upper surface are open, and water pressure is used. Then, the sealing material is closely attached to the work wall of the revetment, seawater in the box frame is drained by a pump, and then the T-shaped material is fixed to the work wall surface by the drive bolt, and the box frame is fixed to the work wall surface. It has been known. However, the structure that tightens the drive bolts to fix the box frame to the work wall surface and loosens the drive bolt to remove the box frame from the work wall surface has workability in attaching and removing the box frame and moving the box frame. There is a problem that it is extremely low, and there is a problem that the work in the box cannot be reduced.

It is an object of the present invention to provide a working unit device such as a seawall that effectively solves the above problems.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is a box-shaped housing in which one of the side surface portions and the upper surface portion are opened, and the upper surface portion faces upward. A work housing that blocks the entry of water from the water side such as the sea by bringing the edge of the opening into contact with a work wall surface such as a sea wall, and faces the work wall surface to define a predetermined work space, and the work housing described above. In a work unit such as a revetment that has a drainage means for draining water that has invaded inside and forms a work space open to the atmosphere in front of the work wall such as a revetment that is exposed due to ebb and flow of the tide Provided on the inner surface of the housing, and an upper support arm that extends horizontally from a frame provided on the inner surface of the housing toward the corrugated portion of the revetment and has its tip end located above the upper surface of the corrugated portion. Skeleton from above A lower support arm that extends horizontally toward the wave-reversing portion and has its tip end located below the lower surface of the wave-reversing portion; a support plate provided on the top surface of the lower end portion of the wave-reversing portion; A seal mechanism provided in the work housing so as to be able to seal and release the seal in order to seal between the opening edge and the work wall surface,
A wheel provided on the tip of the upper support arm, a rail laid on the upper surface of the wave-returning part for engaging the wheel to move the housing horizontally along the work wall surface, and a tip of the upper support arm. A jack provided on the lower surface of the wave portion, which is extended to urge the upper surface of the wave-returning portion to separate the upper support arm and the wheel from the upper surface of the wave-returning portion and the rail, and the support plate to the wave-returning portion. And a jack for bringing the upper support arm and the lower support arm into one piece with the wave-reversing portion by being pressed against the lower surface of the.

[Operation] When the jack is contracted and the sealing function is actuated to the seal releasing position, the working housing becomes horizontally movable along the rail. Move the working housing into place,
When the jack is extended, the support plate of the lower support arm is pressed against the lower surface of the wave return part, and the upper support arm and the lower support arm are integrated with the wave return part. Be integrated into. When the sealing mechanism is operated to seal the opening edge of the housing and the work wall surface and the drainage means is operated to drain the water in the housing, the work housing is exposed to the atmosphere by facing the work wall such as a seawall. Work space. The horizontal force of the sealing mechanism is
It is compensated by the pressing force of the jack.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

The working unit device 1 for revetment and the like according to the present invention is shown in FIGS.
It is configured as shown in the figure. As shown in the figure, the wall surface 2 facing the sea such as a seawall is a sheet pile 3 that is cast on the bottom of the water, for example.
And a concrete wall 4 and the like constructed above it.

When the wall surface 2 is to be worked, the opening wall edge 6 of the work housing 5 is in contact with the work wall surface 2 to block the intrusion of water from the water side such as the sea. The work housing 5 has, for example, a shape in which one side surface of a rectangular container made of steel is opened, and defines a predetermined work space 7 facing the work wall surface 2. The work housing 5 is supported by the housing support means 8 in contact with the work wall surface 2. The housing supporting means 8 detachably holds the wave-backing portion such as the seawall. Specifically, since the corrugated portion such as a seawall is formed by the concrete wall 4 and the concrete wall 4 is formed so as to project toward the water side such as the sea from the sheet pile 3 as illustrated, The housing supporting means 8 is adapted to grip the concrete wall 4 from above and below in a detachable manner.

The housing support means 8 is fixed to the work housing 5 and is made up of a steel support leg 9 which is erected, and a support leg 9 which extends from the support leg 9 toward the work wall surface 2 and is vertically spaced by a predetermined distance D. Two supporting arms 10 and 11 provided on the upper side, a jack 12 provided on the lower side of the upper supporting arm 10 and a supporting plate 13 provided on the upper side of the lower supporting arm 11.

The support leg 9 is formed in a truss structure, and the support leg 9 and the support arms 10 and 11 are supported by ribs 14 and are reinforced respectively. Further, the predetermined distance D between the support arms 10 and 11 is formed to be wider than the thickness T of the concrete wall 4 in the height direction. Further, as shown in FIG. 3, the jack 12 is pressed against the concrete wall 4 by hydraulic pressure or the like, and holds the concrete wall 4 together with the support plate 13. Between the jack 12 and the support plate 13 and the concrete wall 4, the concrete wall 4
Cushion material 15 such as hard rubber to prevent damage
Is installed. In this embodiment, the housing supporting means 8 formed in this manner is provided at both longitudinal end portions and the central portion of the working housing 5. Further, the work housing 5 is provided with a seal mechanism 16 for sealing between the opening edge 6 of the work housing 5 and the work wall surface 2 abutting against the opening edge 6. This sealing mechanism 16 is the fourth
It is formed as shown in FIGS. FIG. 4 shows a side seal mechanism 17 for sealing the side of the opening edge 6 of the work housing 5 and the work wall surface 2. As shown in the figure, the side seal mechanism 17 is provided at the opening side edge of the work housing 5, and is provided with a side inner seal member 18 including a jack or the like that is pressed against the sheet pile 3 or the concrete wall 4 by hydraulic pressure or the like. A base portion is attached to the outer surface of the work housing 5 by a hinge member 19, and a side seal member 20 is extended so as to come into surface contact with the sheet pile 3 or the concrete wall 4 to form a double seal structure. There is. A seal member 21 such as a soft rubber is attached to the tip ends of the side inner seal member 18 and the side outer seal member 20.

In particular, the side outer seal member 20 has a shape adapted to the abutting sheet pile 3 or concrete wall 4 and the like so as to come into surface contact with these, and the sealing property is improved by applying water pressure from the outside. It is supposed to do. And
A rubber-based thin film sealing material 22 is attached to the tip of the side outer seal member 20 and the outside of the hinge member 19.
FIG. 5 shows a bottom seal mechanism 23 for sealing the bottom of the opening edge 6 of the work housing 5 and the work wall surface 2. As shown in the drawing, the bottom seal mechanism 23 is provided at the bottom edge of the opening of the work housing 5, and has a bottom inner seal member 24 including a jack or the like that is pressed against the sheet pile 3 or the concrete wall 4 by hydraulic pressure or the like. A base portion is attached to the outer bottom surface of the housing 5 by a hinge member 19, and a double outer seal structure is formed by the bottom outer seal member 25 extended so as to make visual contact with the sheet pile 3, the concrete wall 4, and the like. The bottom inner seal member 24 and the bottom outer seal member 25 are formed in the same shape so as to make surface contact with the corrugated wall of the sheet pile 3 and the work wall surface 2 such as the concrete wall 4, and the edges thereof are formed. Seal material 2 such as soft rubber
1 is attached. In this embodiment, it is formed in a shape that matches the corrugation of the sheet pile 3. A rubber-based thin film seal material 22 is attached to the tip of the bottom outer seal member 25 and the outside of the hinge member 19. Further, as shown in FIG. 1, the working housing 5 is provided with a drainage means 26 for draining water that has entered the inside thereof. The drainage means 26 is formed by, for example, a submersible pump hanging from above the work housing 5 to the bottom thereof. Further, wheels 27 are provided above the housing supporting means 8 and at the tip of the supporting arm 10, and the rail 2 laid on the concrete wall 4 is provided.
The work housing 5 is moved along the work wall surface 2 as the housing moving means 29.

In addition, the roller 30 is provided on the outer top of the work housing 5.
Is provided, and a wire rope 31 is stretched over this.
Thus, the main purpose of stretching the wire rope 31 is to move the working unit device 1 when the working unit device 1 is moved, the device moves to the water side such as the sea due to the sway of the waves and the resistance of the water in front of the moving direction. This is to prevent the wheel 27 from coming off from the upper rail 28 due to the large movement (to smoothly move the device).

Next, the operation of the above embodiment will be described.

For example, when performing coating work or welding work on the sheet pile 3 such as a seawall, first, the work unit device 1 of the present invention is lifted by a crane or the like to face the work wall surface 2 of the portion to be worked, the sea, etc. The housing supporting means 8 is positioned at the height of the concrete wall 4 by hanging it in the water. Next, the housing support means 8 is advanced to the concrete wall 4 side, and the support arms 10 and 11 of the housing support means 8 are positioned above and below the concrete wall 4 protruding toward the water side. Then, a cushion member 15 such as hard rubber is provided between the concrete wall 4 and the jacks 12 and the support plates 13 provided on the upper and lower support arms 10 and 11, respectively.
The concrete wall 4 is gripped between the jack 12 and the support plate 13 by advancing and pressing 2 by hydraulic pressure or the like. By thus tightening the concrete wall 4 with the jack 12 provided on the upper support arm 10, a horizontal reaction force resistance of the tightening surface (cushion material surface) can be obtained.

Here, as shown in FIG. 6, when the concrete wall 4 is tightened with the force of P, horizontal reaction force resistance equal to the value obtained by multiplying the friction coefficient (horizontal direction) of the a-plane becomes possible.

For example, if friction coefficient = 0.3 and tightening force P10 ton
It will be able to resist horizontal force up to 10 x 0.3 = 3 tons.

By supporting the work housing 5 on the work wall surface 2 by the housing supporting means 8, the opening edge 6 of the work housing 5 is brought into contact with the work wall surface 2 to block the intrusion of water from the water side such as the sea. A predetermined work space 7 is defined and formed facing the work wall surface side. However, in this state, water has entered the work housing 5. Next, a seal mechanism 16 seals between the opening edge 6 of the work housing 5 and the work wall surface 2 abutting against the opening edge 6. The side of the opening edge of the working housing 5 is sealed by the side sealing mechanism 17, and the bottom of the opening edge 6 is sealed by the bottom sealing mechanism 23. The side seal mechanism 17 shown in FIG. 4 presses the inner side seal member 18 provided with a jack or the like against the sheet pile 3 and the concrete wall 4 by hydraulic pressure or the like, and seals 21 such as soft rubber with the seal sheet 21 and the concrete wall. Stick to 4.

Further, the lateral outer seal member 20 whose base is supported by the hinge member 19 is pressed against the sheet pile 3 and the concrete wall 4 by water pressure, and the seal material 21 is brought into close contact with the sheet pile 3 and the concrete wall 4. When a pulling force is required, a bolt or the like is inserted into the side inner seal member 18 and the side outer seal member 20, and a nut is screwed to pull the pull. The shape of the sealing material 21 attached to the side outer seal member 20 is devised in accordance with the shapes of the sheet pile 3, the concrete wall 4, and the like. In addition, the hinge member 1 of the side outer seal member 20
9 and the tip of the sealing material 21 are rubber-based thin film sealing materials 22
Seal with. The reaction force generated by pressing the side inner seal member 18 and the side member seal member 20 against the work wall surface 2 such as the sheet pile 3 and the concrete wall 4 is the horizontal reaction force resistance due to the tightening of the jack 12 of the housing supporting means 8. compensate.

The bottom seal mechanism 23 shown in FIG. 5 is also sealed in the same manner as the side seal mechanism 17, but
In particular, since the bottom of the work housing 5 comes into contact with the sheet pile 3 in the horizontal direction, the inner bottom seal member 24 and the outer bottom seal member 25 of the bottom seal mechanism 23 are formed in accordance with the corrugated shape of the sheet pile 3. Then, in synchronization with the sealing of the work housing 5 with the seal mechanism 16, the water that has entered the work housing 5 is drained by the draining means 26 such as an underwater pump. As a result, the working space 7 defined by the working housing 5 becomes an atmospheric environment. Therefore, the sealing performance of the sealing mechanism 16 is also ensured by the water pressure. If necessary, the roller 30 provided on the outer top of the work housing 5 is stretched around the wire rope 31 and wound up by a winch or the like to support the housing supporting means 8 and seal the sealing mechanism 16. Can also be supplemented.

As described above, according to the work unit device 1 for revetment or the like according to the present invention, the work of the work wall surface 2 is performed in the work space 7 defined by the work housing 5 under the atmospheric environment, which is more than the conventional one. The work is extremely easy.

Further, the work unit device 1 for revetment or the like of the present invention is provided with a housing moving means 29. In this embodiment, the housing moving means 29 is operated by the wheel 27 attached to the tip of the upper supporting arm 10 of the housing supporting means 8 running on the rail 28 laid on the concrete wall 4. The housing 5 is moved along the work wall surface 2. At this time, the housing supporting means 8 and the sealing mechanism 16 are released from the concrete wall 4 and the work wall surface 2, respectively. Further, the wire rope 31 is loosened so that the work unit device 1 does not largely move to the water side such as the sea. Since the working housing 5 is moved along the working wall surface 2 by the housing moving means 29, it is possible to work on a wide range of wall surfaces. As a result, the working housing 5
Is allowed to be miniaturized.

Significantly lower construction costs compared to the conventional construction method in which a temporary sheet pile is placed on the water side of the work wall surface 2 to block the water and the interior is drained to create a working space. It can be reduced. In particular, in the painting work of the sheet pile 3, the sheet pile 3 is subject to repainting because the portion exposed to the atmospheric environment due to the ebb and flow of the tide is extremely strongly oxidized and corroded, so that the sheet bottom is not removed. It is not necessary to obtain a work space, and the work unit device 1 of the present invention can be regarded as a suitable device because only the work target portion can be the work space 7.

Also, regarding the welding repair work of the sheet pile 3, when the work target locations are separated from each other, only the work target location has the work space 7
It is very effective to be able to

[Effects of the Invention] In short, according to the present invention, the following excellent effects are exhibited.

(1) The work on the work wall surface can be performed in an atmospheric environment in the work space defined by the work housing.

(2) Therefore, the work is facilitated, a special worker such as a diver is not required, and the construction cost can be reduced.
In addition, it is possible for managers who do not have special skills to check after work.

(3) Furthermore, since no special paint, underwater welding material, equipment, etc. are required, material and equipment costs can be reduced.

(4) The work housing can be easily and quickly moved and fixed outside the work housing.

(5) The work in the housing can be reduced and the safety can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a working unit device for revetment or the like of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a housing adopted for a working unit device for revetment or the like of the present invention. FIG. 4 is a schematic side view showing the supporting means, FIG. 4 is a plan view showing a seal mechanism on the side of the housing adopted in the working unit device such as the revetment of the present invention, and FIG. 5 is adopted in the working unit device such as the revetment of the present invention. FIG. 6 is a schematic view showing the sealing mechanism of the housing bottom portion, and FIG. 6 is an explanatory view showing the operation of the housing supporting means. In the figure, 1 is a work unit device such as a seawall, 2 is a work wall surface,
5 is a working housing, 6 is an opening edge, 7 is a working space, 8 is a housing supporting means, 16 is a sealing mechanism, 26
Is a drainage means, and 29 is a housing moving means.

Front page continued (72) Inventor Kenji Ohji 3-3-3 Harumi, Chuo-ku, Tokyo Ishikawajima Tank Construction Co., Ltd. (72) Kiyoshi Myojin 3-3-3 Harumi, Chuo-ku, Tokyo Ishikawajima Tank Construction Co., Ltd. In-house (72) Inventor Isao Nishiura 3-3-3 Harumi, Chuo-ku, Tokyo Ishikawajima Tank Construction Co., Ltd. (56) References

Claims (1)

[Claims] 1. A box-shaped housing in which one of the side surfaces and an upper surface are opened, the opening edge of the side surface is brought into contact with a work wall surface such as a sea wall with the upper surface facing upward. It has a working housing that blocks the entry of water from the water side such as the sea and faces the work wall surface to form a predetermined working space, and a drainage means for draining the water that has entered the working housing. Then, in a work unit such as a revetment that forms a working space open to the atmosphere in front of a work wall such as a revetment exposed due to the ebb and flow of the tide, a corrugated wall of the revetment is provided from the frame provided on the inner surface of the housing. The upper support arm, which extends horizontally toward the corrugated part, and whose tip is located above the upper surface of the corrugated part, and horizontally extends from the frame provided on the inner surface of the housing toward the corrugated part. , Its tip is wave A lower support arm located below the lower surface of the ridge, a support plate provided on the upper surface of the tip of the lower support arm, and a seal on the work housing to seal between the opening edge of the housing and the work wall surface. A seal mechanism that is provided so that the seal can be released, a wheel that is provided at the tip of the upper support arm, and the wave return portion that engages with the wheel to move the housing horizontally along the work wall surface. A rail laid on the upper surface, and a jack provided on the lower surface of the tip of the upper support arm, which is extended to urge the upper surface of the wave return section to move the upper support arm and the wheel to the upper surface of the wave return section. And a jack that integrates the upper support arm and the lower support arm into the wave return portion by pressing the support plate against the lower surface of the wave return portion while separating from the rail, respectively. Work uni Winding device.