JP2021063435A - Conveyance/installation method of box body constituting temporary cofferdam body, and float barge for box body conveyance constituting temporary cofferdam body - Google Patents

Abstract

To provide a conveyance/installation method of a box body constituting a temporary cofferdam body enabling attitude adjustment of the box body, and a float barge for box body conveyance constituting a temporary cofferdam body.SOLUTION: In a weir 1 having a weir column 10 and a main gate 14 that extends to a side part of the weir column 10 and can be freely ascended and descended, a conveyance/installation method of a box body which constitutes a temporary cofferdam body constructed in the periphery of the weir column 10 and is arranged in the periphery of the weir column 10 includes: a box body conveyance step of temporarily fixing a box body 20 to an inlet 331 of a float barge 330, and self-traveling or towing the float barge 330 to the vicinity of an installation position of the weir column 10; and a box installation step of performing attitude adjustment of the box body 20 using a feeding winch 333 and a retracting winch provided in the inlet 331 and wires 334 and 335 mounted between the box 20 and the wires, and installing the box body 20 in the weir column 10 while storing a part of the weir column 10 in the inside of the box body 20 through an opening provided on the box body 20.SELECTED DRAWING: Figure 9

Description

The present invention relates to a method for transporting and installing a box body constituting a temporary cut-off body, and a float carrier for transporting a box body constituting the temporary cut-off body.

In the vicinity of the branch point of the river, a diversion weir is installed to systematically divert floods and low water by adjusting or limiting the water level, and the river mouth (tide sensitive section) prevents salt water from running up. A tide weir will be provided to maintain the normal function of running water, and an intake weir will be provided to take in urban water, irrigation water, generated water, etc. by adjusting the water level of the river. Further, regarding the above-mentioned various weirs, a dam has a height of 15 m or more from the foundation ground to the top of the fixed portion, and is not connected to the embankment for the purpose of adjusting the flow rate by storing running water. Furthermore, regarding the above-mentioned various weirs, water gates and gutter gates have the function of embankments and prevent or reduce the inundation of running water due to floods and storm surges. Therefore, in the present specification, the term "weir" shall include the above-mentioned various weirs, dams, floodgates, gutter gates, and the like.
By the way, the weir provided at the mouth of the river is used for securing agricultural water, industrial water, etc. by closing the river and blocking the run-up of seawater, and for the purpose of hydraulic control to prevent floods and storm surges. It will be used. This weir is provided with a plurality of weir pillars erected at intervals and a main gate (gate) arranged up and down between adjacent weir pillars. .. The weir pillar is erected up to the water above the footing body made of reinforced concrete, for example, on the bottom of the water, and the main gate is raised and lowered by the elevating mechanism provided on the weir pillar.
When performing repair work or repair work including seismic retrofitting of the weir pillar in a weir equipped with a weir pillar and a main gate, for example, in the air around the weir pillar with the main gate preventing seawater from running up. A temporary deadline is set to put it in a working environment.
Generally, a steel sheet pile is placed around the weir columns, or a temporary deadline is constructed by constructing an embankment to surround the weir columns, and then the water inside these temporary deadlines is drained to the air. It forms a working environment. However, in these temporary deadline construction methods, the temporary deadline, which is a temporary deadline, becomes large-scale, and a large amount of time and cost are required for the temporary deadline construction work and the subsequent temporary deadline removal work. Therefore, in river construction where repair work can be limited to the dry season, there is a problem that the work time for repair work is restricted.

Here, Patent Document 1 proposes a work box having an opening on the side surface. This work box accommodates a part of the structure underwater through the opening in a plan view, and attaches to the structure and extends in the vertical direction in a state where the work space is formed by the work box and the structure. The end of the work box has a first inclined surface that is inclined so that the inside of the work space is narrow and the outside is wide, and a wedge-shaped first waterproof packing provided in the gap between the structure and the first inclined surface. To be equipped. By moving the first waterproof packing in a direction approaching the work space along the first inclined surface, draining water from the work space and applying a water pressure applied in the horizontal direction to the first waterproof packing, the work box Water is stopped. This method is also called the NDR (Neo-Dry Repair Method) method.

On the other hand, Patent Document 2 proposes a caisson for a deadline, which is attached to a structure erected on a pedestal and is seated on a submerged pedestal to close the deadline. This deadline cason consists of a plurality of vertically divided split boxes with adjustable buoyancy, and one side of each split box is connected with a hinge so that it can be opened and closed, and is continuously connected to the bottom surface of the cutting edge of each split box. A cushioning seal material is attached, and support legs that support the blade edge of the split box at a distance from the pedestal are provided on the bottom surface of the blade edge of each split box to maintain a certain distance from the structure inside the split box. A plurality of guide spacers that can be engaged with each other are projected sideways. Applying this deadline caisson, the split box that composes the caisson is opened and closed to exterior the structure, the cushioning seal material is seated on the pedestal, and the water blocking grout is filled along the cutting edge of the caisson. The deadline is achieved by stopping water at the cutting edge of the caisson with a buffer sealing material and a water blocking grout. This method is also called the RUP (Reinforce & Repair Underwater Pier) method.

Japanese Unexamined Patent Publication No. 2016-79591 Japanese Unexamined Patent Publication No. 9-189043

In the temporary cut-off method using the work box described in Patent Document 1, the temporary cut-off is performed in a weir in which the main gate extends to the side of a structure such as a weir pillar while blocking the flow of seawater and river water. When attempting to construct, only one side of the main gate in the structure can be temporarily closed. On the other hand, in the temporary cut-off method using the deadline caisson described in Patent Document 2, since the temporary cut-off target is a pier or the like, seawater is used in the weir in which the main gate extends to the side of the weir column. It is not possible to build a temporary deadline while blocking the traffic of river water and river water.

By the way, when installing the box body constituting the temporary cut-off body on the weir column, it is important to adjust the posture of the box body so that a part of the weir column is housed inside the box body through the opening of the box body. Become.
However, Patent Documents 1 and 2 relate to a method of transporting and installing a box body constituting a temporary cut-off body, which enables the posture of the box body to be adjusted, and a float carrier for transporting the box body constituting the temporary cut-off body. There is no description.

An object of the present invention is to provide a method for transporting and installing a box body constituting a temporary cut-off body, and a float carrier for transporting the box body constituting the temporary cut-off body, which enables the posture of the box body to be adjusted. There is.

In order to achieve the above object, one aspect of the method for transporting and installing the box body constituting the temporary deadline body according to the present invention is as follows.
In a weir having a weir pillar and a main gate that can be raised and lowered extending to the side of the weir pillar, a temporary cut-off body constructed around the weir pillar is formed and arranged around the weir pillar. It is a method of transporting and installing the box body to be installed.
A box transport process in which the box is temporarily fixed in the cove of a float carrier provided with a cove, and the float carrier is self-propelled or towed to the vicinity of the installation position of the weir pillar.
A sending winch and a pull-back winch are provided in the cove, and the posture of the box body is adjusted by using the sending winch and the pull-back winch and a wire attached between the pull-back winch and the box body. It is characterized by having a box body installation step of installing the box body in the dam body while accommodating a part of the dam body inside the box body through an opening provided in the box body. ..

According to this aspect, a delivery winch and a pull-back winch are provided in the cove of the float carrier, and are attached between the delivery winch and the pull-back winch and the box in the box installation process executed after the box transport step. By adjusting the posture of the box body by wiring using the wires, the box body can be fitted to the dam body while accurately accommodating a part of the dam body inside the box body through the opening provided in the box body. Can be installed accurately.

Further, in another aspect of the method for transporting and installing the box body constituting the temporary cut-off body according to the present invention, the inside of the box body includes a guide rail extending from the inner side surface of the box body to the inside and the guide. A plurality of guide units are provided, which are composed of a guide roller that can rotate at the tip of the crosspiece.
In the box body installation step, a plurality of the guide rollers are brought into contact with the side surface of the weir pillar, and the horizontal posture of the box body is adjusted with respect to the weir pillar while rotating the plurality of guide rollers. It is characterized in that the box body is sunk with respect to the weir pillar while rotating a plurality of the guide rollers.

According to this aspect, a plurality of guide units are provided inside the box body, which are composed of a guide bar extending inward from the inner side surface of the box body and a rotatable guide roller at the tip of the guide bar. As a result, a plurality of guide rollers can be brought into contact with the side surface of the dam column, and the horizontal posture of the box body with respect to the dam column can be adjusted efficiently and with high accuracy while rotating the plurality of guide rollers. After adjusting the horizontal posture, the box body is sunk with respect to the dam column while rotating the guide roller, so that the box body can be installed efficiently and with high accuracy at the position on the bottom plate where the box body should be installed. can do.

Further, in another aspect of the method for transporting and installing the box body constituting the temporary cut-off body according to the present invention, a double pipe composed of an outer pipe and an inner pipe having different dimensions is provided at the tip of the guide rail. The guide roller is attached to the tip of either the outer tube or the inner tube.
In the box body transporting step, the inner pipe is housed inside the outer pipe.
The box body installation step is characterized in that either one of the outer pipe and the inner pipe is relatively projected so that the guide roller is brought into contact with the side surface of the weir pillar.

According to this aspect, by attaching a guide roller to the tip of either the outer pipe or the inner pipe constituting the double pipe, either the outer pipe or the inner pipe can be projected as desired. While the guide roller is brought into contact with the side surface of the weir pillar, the horizontal posture of the box body with respect to the weir pillar can be efficiently adjusted (particularly fine adjustment). Here, as for the overhang of either the outer pipe or the inner pipe, in addition to the manual overhang by the worker, the double pipe is equipped with a cylinder mechanism or the like, and there is an automatic overhang by automatically controlling the cylinder mechanism or the like. ..

Further, in another aspect of the method for transporting and installing the box body constituting the temporary deadline body according to the present invention, the box body is
A hollow portion, an injection / drainage pipe that communicates the hollow portion with external water, an injection / drainage valve, an air supply / exhaust pipe, an air supply / exhaust valve, and a pressure air supply unit that supplies pressure air to the air supply / exhaust pipe are provided. ,
The box body floats and sinks by opening and closing at least one of the water injection / drainage valve and the air supply / exhaust valve.
In the temporary fixing of the box body to the cove in the box body transport step, the float pontoon is positioned on the side of the pier, the box body is suspended from the pier by using a heavy machine, and the float is suspended from the cove. The box body is temporarily fixed to the cove with the pier as a work floor.

According to this aspect, the box body supplies compressed air to the hollow portion, the injection / drainage pipe that communicates the hollow portion and the external water, the injection / drainage valve, the supply / exhaust pipe, the supply / exhaust valve, and the supply / exhaust pipe. By providing a compressed air supply unit, the amount of external water (ballast) injected into the hollow portion is adjusted by opening and closing at least one of the water injection / drainage valve and the air supply / exhaust valve, and the draft of the box body is desired. It is adjusted, and the box body can be raised and lowered as desired by adjusting the draft. Therefore, for example, when a sufficient draft cannot be secured, the draft can be adjusted by hoisting the box body as desired without dredging the seabed unnecessarily. Here, the pressure air supply unit may be provided in advance in the box body, or may be retrofitted at the time of air supply. In addition, "opening and closing of at least one of the water injection / drainage valve and the air supply / exhaust valve" includes opening / closing only one of the water injection / drainage valve and the air supply / exhaust valve, and opening and closing both of them. The valve is an automatic opening / closing valve, and there is a form in which the administrator automatically opens / closes by wireless communication. Further, regarding the "supply / exhaust pipe" and the "supply / exhaust valve", when exhaust is not required, the "supply / exhaust pipe" and the "air supply / exhaust valve" may be replaced. Then, in the box transport process, the float carrier is positioned on the side of the pier, which is the work yard, and the box is hung from the pier using heavy machinery in the cove, and the float carrier is used as the work floor for the box. By temporarily fixing the box to the cove in a state where it floats and sinks as desired by adjusting the draft, the box is temporarily fixed from the pier to the float carrier, and the box is transported. It is possible to efficiently perform a series of operations up to.

Further, in another aspect of the method for transporting and installing the box body constituting the temporary deadline body according to the present invention, the box body is
The lower box body arranged in the lower tier and
It has one or more upper boxes mounted on the lower box, and has one or more upper boxes.
At least one of the upper box body and the lower box body has a hollow portion, an injection / drainage pipe that communicates the hollow portion with external water, an injection / drainage valve, an air supply / exhaust pipe, an air supply / exhaust valve, and the air supply / exhaust. Equipped with a pressure air supply unit that supplies pressure air to the pipe,
The box body floats and sinks by opening and closing at least one of the water injection / drainage valve and the air supply / exhaust valve.
In the temporary fixing of the box body to the cove in the box body transport step, the float pontoon is positioned on the side of the pier, the lower box body is suspended from the pier by using a heavy machine, and then the lower box body is suspended from the pier. In addition, the upper box body is hung on the lower box body, and the lower box body and the upper box body are connected to each other by using the float pier as a work floor to assemble the box body on the water. It is a feature.

According to this aspect, by having the lower box body and the upper box body of one or more stages, for example, when the scale of the box body is large, the land from the factory to the pier which is the work yard. The transportability during transportation and the like is improved, the size of the heavy machinery used for suspending the box body at the pier can be suppressed, and the suspension property is also improved. In the temporary fixing of the box body to the cove in the box body transport process, the lower box body is hung from the pier using a heavy machine to the cove, then the upper box body is hung on the lower box body, and the float stand. By connecting the lower box and the upper box with the ship as the work floor, the box can be efficiently assembled on the water. Here, "at least one of the upper box body and the lower box body has a hollow portion, etc." means that only one of the upper box body and the lower box body has a hollow portion, etc., and both are hollow. In the form having a plurality of lower box bodies, the form including a portion and the like includes a form in which only one lower box body has a hollow part and the like, and all lower box bodies have a hollow part and the like. Includes the form of

Further, in another aspect of the method for transporting and installing the box body constituting the temporary cut-off body according to the present invention, when there is an airborne restriction obstacle above the dam column on which the box body is installed, the box is said to be present. In the body installation step, in front of the airborne restriction obstacle, the box body is adjusted to a predetermined subsidence level so that the box body does not interfere with the airborne restriction obstacle, and the box body is adjusted to the airborne restriction obstacle. It is characterized in that the box body is installed on the dam column by passing below.

According to this aspect, the amount of external water (ballast) injected into the hollow portion is adjusted so that the draft of the box body is adjusted as desired, so that the box body can be used in the presence of a flying restriction obstacle. After adjusting the box body to a predetermined subsidence level so as not to interfere with the airborne restriction obstacle, the box body can be passed under the airborne restriction obstacle and the box body can be installed on the weir column.

Further, one aspect of the float carrier for transporting the box body constituting the temporary deadline according to the present invention is
In a weir having a weir pillar and a main gate that can be raised and lowered extending to the side of the weir pillar, a temporary cut-off body constructed around the weir pillar is formed and arranged around the weir pillar. It is a float pontoon for transporting the box body that constitutes the temporary cut-off body that transports the box body to be installed.
The float pontoon has a cove in which the box is temporarily fixed.
The cove is provided with a sending winch and a pulling winch.
With the box body temporarily fixed to the cove, it is self-propelled or towed to the vicinity of the installation position of the weir pillar.
A wire attached between the sending winch and the pulling back winch and the box body is used to adjust the posture of the box body, and a part of the dam column is provided through an opening provided in the box body. Is housed inside the box body, and the box body is installed on the dam pillar.

According to this aspect, the float pontoon is provided with a cove for temporarily fixing the box body, a sending winch and a pulling back winch are provided in the cove, and a wire attached between the sending winch and the pulling back winch and the box body. By adjusting the posture of the box body by wiring using the box body, a part of the dam body can be accurately accommodated inside the box body through the opening provided in the box body, and the box body can be accommodated with respect to the dam body. Can be installed accurately.

According to the method of transporting and installing the box body constituting the temporary deadline body of the present invention and the float carrier for transporting the box body constituting the temporary deadline body, the temporary deadline body capable of adjusting the posture of the box body is provided. It is possible to provide a method for transporting and installing the box body to be constructed, and a float carrier for transporting the box body to be constructed as a temporary deadline.

It is a perspective view of the example of the open type temporary cut-off body included in the example of the temporary cut-off body which concerns on embodiment. It is a perspective view of the example of the closed type temporary cut-off body included in the example of the temporary cut-off body which concerns on embodiment. It is a perspective view which shows the state which the temporary gate is attached to the side of the closed type temporary cut-off body. It is a process drawing explaining an example of the closed type temporary cut-off body construction method which concerns on embodiment in order from (a) to (c). Following FIG. 4, it is a process diagram for explaining an example of the closed type temporary cut-off body construction method according to the embodiment in the order of (a) to (c). It is a vertical cross-sectional view which shows an example of the box body which concerns on embodiment. It is an enlarged view of the part B of FIG. 6A, and is the figure explaining the draft adjustment method of the box body which concerns on embodiment. It is a process drawing which explains an example of the transportation and installation method of the box body which concerns on embodiment in order from (a) to (c), and also describes an example of a float carrier for transporting a box body which concerns on embodiment. It is a figure. It is a perspective view explaining the guide unit provided inside the box body. It is an enlarged view of the part B of FIG. 8A. It is a process drawing which explains in detail the box body installation process among the example of the box body transport and installation method which concerns on embodiment. Following FIG. 9, it is a process diagram for explaining the box body installation process in detail. Following FIG. 10, it is a process diagram for explaining the box body installation process in detail. It is a process drawing explaining an example of the sinking and fixing method of a box body which concerns on embodiment, and also an example of the fixing structure of a box body (fixing structure of a box body and a bottom board) which concerns on embodiment, and stops of a box body and a bottom board. It is a figure which shows an example of a water structure. It is a process drawing which shows the process method of the joint opening part of the bottom board in order from (a) to (d). It is a process drawing which shows the process of processing of the joint step / defect part of the bottom board in order from (a) to (e). It is a figure which shows an example of the fixed structure of a box body (fixed structure of a box body and a weir pillar) which concerns on embodiment, and an example of a water-stop structure of a box body and a weir pillar. It is a perspective view which shows the connection part of a wall body and a temporary gate. It is an enlarged plan view of the part B of FIG. 16A. It is a side view which shows an example of the hinge mechanism of a box body and a wall body. It is a BB arrow view of FIG. 17A, and is a plan view which also shows the water stop structure in the hinge mechanism. FIG. 17A is a view taken along the line CC of FIG. 17A, which is a plan view showing both the water blocking structure of the hinge mechanism. It is a top view which shows the water-stopping structure of the end side surface on the outer water side of both when the upstream side wall body and the downstream side wall body are closed. It is a perspective view of an example of the temporary gate which concerns on embodiment. It is a front view of the temporary gate which concerns on embodiment. It is a figure which shows an example of the hardware configuration of a user terminal. It is a figure which shows the whole structure of the example of the temporary gate elevating system which concerns on embodiment, and also shows the example of the functional structure of the traction tool and the user terminal which make up a temporary gate elevating system.

Hereinafter, the temporary deadline construction method and the temporary deadline body according to the embodiment will be described with reference to the attached drawings. In the present specification and the drawings, substantially the same components may be designated by the same reference numerals to omit duplicate explanations.

[Temporary cut-off body and closed type temporary cut-off body construction method according to the embodiment]
First, with reference to FIGS. 1 to 5, an example of the temporary cut-off body according to the embodiment and an example of the closed type temporary cut-off body construction method will be described. Here, FIG. 1 is a perspective view of an example of an open type temporary cut-off body included in an example of the temporary cut-off body according to the embodiment, and FIG. 2 is included in an example of the temporary cut-off body according to the embodiment. It is a perspective view of an example of the closed type temporary cut-off body, and FIG. 3 is a perspective view showing a state in which a temporary gate is attached to the side of the closed type temporary cut-off body. Further, FIGS. 4 (a) to 4 (c) and 5 (a) to 5 (c) are process diagrams for explaining an example of the closed type temporary cut-off body construction method according to the embodiment in order.

The weir pillar 10 to be repaired or repaired in a state where a temporary deadline is constructed and placed in an aerial working environment forms a weir 1 (river mouth weir) (see FIG. 9). This repair is, for example, reinforcement work by the continuous fiber wrapping method, which is a part of earthquake-resistant measures to prevent loss of agricultural water sources and salt damage due to damage to the gutter gate during a large-scale earthquake. In the illustrated example, the river mouth weir is illustrated as the weir 1, but the weir includes a diversion weir, a tide stop weir, and an intake weir, and further includes a dam, a floodgate, and a gutter gate. Therefore, the temporary cut-off body according to the embodiment is applied to repair work of various weirs. In addition to the repair work of the weir, the temporary cut-off body according to the embodiment is used when the surrounding area is temporarily cut off during the repair work of various underwater structures such as abutments and piers underwater. It is also applicable to.

The weir 1 includes a plurality of weir pillars 10 arranged at intervals in the width direction of the river mouth, and a main gate 14 (gate) that is moved up and down by an elevating mechanism 16 included in the adjacent weir pillars 10. (See FIG. 9).

Further, as shown in FIG. 1, a bottom plate 15 made of reinforced concrete is provided on the water bottom, and a weir pillar 10 is erected above the bottom plate 15 up to the water surface. A main gate drop groove 12 into which an end portion of the main gate (not shown) is loosely fitted is provided on the side surface 11 of the weir pillar 10, and a position away from the main gate drop groove 12 is provided. A first drop groove 13 into which the temporary gate 73 (see FIG. 4) is dropped is provided.

As shown in FIG. 1, an upstream side box body 20 and a downstream side box body 30 are arranged on the upstream side and the downstream side, respectively, around the side surface 11 of the weir pillar 10, and between the two box bodies 20 and 30, respectively. There is a first gap 10a on the side of the weir pillar 10 (on the left and right sides of the weir pillar 10). Both the upstream side box 20 and the downstream side box 30 have a substantially U-shape in a plan view, and both ends of the weir pillar 10 are inside 25 via openings 26 and 36 at the respective ends. , 35 and attached to the weir column 10.

Here, the "upstream side" and the "downstream side" are, for example, depending on the installation position of the target weir, such as the lake side and the bay side, the river side and the sea side, the mountain side and the sea side of the river, etc. The contents of are diverse.

The upstream side box body 20 and the downstream side box body 30 are rotatably provided with an upstream side wall body 40 and a downstream side wall body 50 at openings 26 and 36 at their respective ends. An open type temporary deadline 100 is shown in which the 40 and the downstream side wall 50 are open.

The upstream box body 20 has a lower box body 21 arranged in the lower stage and upper box bodies 22 and 23 having a plurality of stages (two stages in the illustrated example) mounted on the lower box body 21. It has a stepped structure, and the lower box body 21 and the upper box bodies 22 and 23 are connected to each other. A wave pressure resistance panel 24 is attached to the uppermost surface of the uppermost box body 23.

On the other hand, the downstream box body 30 also has a lower box body 31 arranged in the lower stage and upper box bodies 32 and 33 having a plurality of stages (two stages in the illustrated example) mounted on the lower box body 31. It has a three-stage structure, and the lower box body 31 and the upper box bodies 32 and 33 are connected to each other. A wave pressure resistance panel 34 is attached to the uppermost surface of the uppermost box body 33.

The configurations of the boxes 20 and 30 will be described in detail below, but the boxes 20 and 30 may have one or three or more upper boxes in addition to the illustrated examples, and the laminated structure may have one or more upper boxes. It may be an integral structure without it.

A plurality of cutting beams 62 constituting the temporary support work 60 are bridged between the side surface 11 of the weir pillar 10 and the boxes 20 and 30. More specifically, a plurality of columns 61 are erected at intervals along the inner wall surfaces of the boxes 20 and 30, and the opposing columns 61 form a pair, and a cutting beam is provided between the paired columns 61. 62 is bridged. Further, in the vicinity of the side surface 11 of the weir column 10, the column 63 is erected with a slight second gap 69 between the column 63 and the side surface 11 of the weir column 10, and stands on the inner wall surface paired with the column 63. A weir 62 is bridged between the column 61 and the column 61.

A short beam 64 is disposed in the small second gap 69, and is bridged between the column 63 and the side surface 11 of the weir column 10. The columns 61, 63 and the cutting beam 62 are formed of a shaped steel material such as H-shaped steel, and the cutting beam 62 is provided with a jack (not shown) such as a giraffe jack at an intermediate position or at an end thereof. Further, the short beam 64 may be formed of a short shaped steel material such as H-shaped steel, a steel pipe, a circular pipe, or the like, and may also be provided with a jack (not shown). By operating the jack, an axial force is introduced into the girder 62, and the opposing columns 61 and 63 can counter the external water pressure acting on the boxes 20 and 30, and correspond to the girder 62. The boxes 20 and 30 are fixed to the side surface 11 of the weir column 10 by the short beam 64.

The column 63 included in the temporary support work 60 is erected with a second gap 69 placed between the side surface 11 of the weir column 10 and the side surface 11 of the weir column 10 in the vicinity of the weir column 10. Since it is bridged between 63 and the weir pillar 10, when repairing the side surface 11 of the weir pillar 10, a part of the short beam 64 is replaced to provide a work space in the second gap 69. Can be formed. Therefore, the length of the short beam 64 is set to a length that can secure the required working space.

According to the configuration of the temporary support work 60 in the illustrated example, when the cutting beam becomes an obstacle when repairing the side surface 11 of the weir column 10, it is not necessary to replace the long-extended cutting beam, and the short cutting beam 64 is filled. Since it is only necessary to replace the temporary support work 60, the weir column 10 can be efficiently repaired without changing the temporary support work 60 on a large scale.

The opening joints 20'and 30'on the sides of the openings 26 and 36 of the boxes 20 and 30, respectively, are removed when forming the closed-type temporary cut-off body 200 shown in FIG. As shown in FIG. 2, in the removed area of the opening joints 20'and 30', an opening reinforcing column 65 for supporting the boxes 20 and 30 and a side surface 11 of the opening reinforcing column 65 and the weir column 10 are provided. An opening reinforcing short beam 66 for connecting is provided.

Corresponding wall bodies 40 and 50 are rotatably attached to the boxes 20 and 30 via a plurality of hinge mechanisms 41 and 51.

Since the wall bodies 40 and 50 are rotatably attached to the boxes 20 and 30, respectively, the wall bodies 40 and 50 are closed by the rotation of both wall bodies 40 and 50 (Fig. 2). The state shown) and the opening (state shown in FIG. 1) can be smoothly performed. Further, since both the wall bodies 40 and 50 rotate on the outside of both the box bodies 20 and 30, the rotation of the wall bodies 40 and 50 affects the repair work inside the boxes 20 and 30. There is no.

In addition to the illustrated examples, the opening and closing modes of the wall bodies 40 and 50 with respect to the box bodies 20 and 30 are such that the wall bodies 40 and 50 can slide freely toward the first gap 10a in both box bodies 20 and 30. Even if it is stored, the first gap 10a is opened by storing the wall bodies 40 and 50, and the first gap 10a is closed by sliding and projecting the wall bodies 40 and 50. Good. Furthermore, there is also a manual mode in which the walls 40 and 50 are towed into the first gap 10a and the first gap 10a is closed by attaching the walls 40 and 50 to both boxes 20 and 30 by a heavy machine or a diver. is there.

As shown in FIG. 2, in the closed type temporary cut-off body 200, temporary support works are also constructed between the ends of both wall bodies 40 and 50 and the side surface of the weir column 10. Specifically, the wall body support column 67 is erected so as to straddle the inner side surfaces of both wall bodies 40 and 50, and the wall is placed between the wall body support column 67 and the side surface 11 of the weir column 10. A short beam 68 for supporting the body is hung.

In this way, the cutting beam 62 and the short cutting beam 64 constituting the temporary support work 60 are bridged between the side surface 11 of the weir pillar 10 and the boxes 20 and 30, so that the circumference of the weir pillar 10 is reached. The boxes 20 and 30 can be fixed stably. Further, in the closed type temporary cut-off body 200, a short cutting beam 68 for supporting the wall body constituting the temporary support work is further bridged between both the wall bodies 40 and 50 and the weir column 10. Therefore, the wall bodies 40 and 50 can be stably fixed to the weir column 10.

Further, as shown in FIG. 3, in the closed type temporary cut-off body 200, on one side of the upstream side wall body 40 and the downstream side wall body 50 (in the illustrated example, the side of the upstream side wall body 40). A temporary gate 73 is attached.

More specifically, on the side of the upstream side wall body 40, a plurality of temporary columns 71 having second drop grooves 72 on the left and right are erected at intervals. The temporary support column 71 is formed of, for example, H-shaped steel, and a second drop groove 72 is formed by the web and the two flanges. As will be described in detail below, a tubular material 71'(see FIG. 20) formed of a steel square pipe, a circular pipe, or the like is provided below the temporary support column 71, and is provided in advance on the bottom plate 15. The temporary support column 71 is erected on the bottom plate 15 by dropping the existing convex portion 15a so as to cover the tubular member 71'.

The temporary gate 73 is integrally formed by connecting a plurality of (three pieces in the illustrated example) corner drop members 74 and 75 to each other via a connecting metal fitting 76. The lower two corner-removing materials 74 are, for example, existing corner-removing materials, and the upper corner-removing material 75 is, for example, a new new corner-removing material. The number of corner-removing materials is not limited to the illustrated example, and all the corner-removing materials may be newly installed corner-removing materials. On the upper surface of the new corner drop member 75, a hanging hook 75a for locking the lower end of the hanging member 79 hanging from the towing tool 78 is provided.

Further, an end support steel material 46 is erected on the side of the wall body 40, and the end face of the temporary gate 73 at the end portion on the wall body side is supported by the end support steel material 46. A third drop groove 47 is provided on the side surface of the wall body 40, and the end portion of the temporary gate 73 at the end portion on the wall body side is dropped into the third drop groove 47.

During the flood season, the open type temporary cut-off body 100 shown in FIG. 1 is formed to open the first gap 10a, so that the main gate 14 can be raised and lowered, and among the weir pillars 10, Repair work or the like can be performed on the area surrounded by the upstream box body 20 and the downstream box body 30.

On the other hand, in the dry season, the weir pillar 10 is formed by forming a closed type temporary cut-off body 200 that completely closes the periphery of the side surface 11 of the weir pillar 10 by closing both the wall bodies 40 and 50. It is possible to carry out repair work, etc. in the entire area around the area.

Further, since the temporary gate 73 can be attached to either side of the upstream side wall 40 or the downstream side wall 50 as shown in FIG. 3, for example, it is temporarily installed on the side of the closed type temporary cut-off body 200. By attaching the gate 73, even when the main gate 14 is open (in the ascending position), the temporary gate 73 can block the traffic of seawater and river water on the upstream side and the downstream side.

Next, an example of the closed type temporary cut-off body construction method according to the embodiment will be described with reference to FIGS. 4 and 5.

In the closed type temporary cut-off body construction method, first, as shown in FIG. 4A, an upstream box body 20 is arranged on the upstream side of the periphery of the side surface 11 of the weir column 10 and on the downstream side. Disposes a downstream box body 30 and provides a first gap 10a between both boxes 20 and 30. Further, a temporary support work 60 is installed inside each of the boxes 20 and 30, and the boxes 20 and 30 are fixed to the side surface 11 of the weir pillar 10 to construct an open type temporary cut-off body 100 (). Above, the box body installation process).

Next, in order to enable the elevating and lowering of the main gate 14, a wall support column 67 is erected on the upstream side of the first gap 10a so as not to interfere with the main gate 14, and the wall support column 67 and the wall support column 67 are erected. The side surface 11 of the weir column 10 is connected by a short beam 68 for supporting the wall body.

After connecting the wall support column 67 and the side surface 11 of the weir column 10 with a wall support short beam 68, the upstream side wall 40 is rotated in the X1 direction as shown in FIG. 4 (b). 1 Overhanging into the gap 10a, the end of the upstream side wall body 40 is connected to the wall body supporting column 67 constituting the temporary support (the above is the one-sided wall body installation step).

Next, as shown in FIG. 4C, a temporary gate 73 is provided for the third drop groove 47 provided on the inner surface of the upstream side wall body 40 and the first drop groove 13 of the corresponding weir column 10. Drop it.

Further, after the end support steel material 46 is erected on the outside of the upstream side wall body 40 and a plurality of temporary columns 71 are erected at intervals, a third drop groove provided on the outer surface of the upstream side wall body 40 is provided. The temporary gate 73 is dropped into the 47 and the second drop groove 72 provided in the adjacent temporary support column 71.

Further, by dropping the temporary gate 73 into the second drop groove 72 of both adjacent temporary columns 71, a continuous temporary gate 73 is constructed on the side of the side surface 11 of the weir column 10 (the above is the temporary gate installation). Process).

Next, as shown in FIG. 5A, the main gate 14 is raised, and as shown in FIG. 5B, the downstream side wall body 50 is rotated in the X2 direction so as to project into the first gap 10a. By connecting the end of the downstream side wall body 50 to the wall body support column 67 constituting the temporary support, both wall bodies 40 and 50 block the first gap 10a, and both box bodies 20. , 30 and both wall bodies 40 and 50 are constructed to construct a closed type temporary cut-off body 200.

Further, after the closed type temporary cut-off body 200 is constructed, as shown in FIG. 5 (b), an opening reinforcing column 65 for refilling and an opening reinforcing short cut are provided on the sides of the opening joints 20'and 30'. Install the beam 66. Next, as shown in FIG. 5 (c), drainage from the wall body internal space formed by the side surface 11 of the weir column 10, both wall bodies 40 and 50, and the opening joints 20'and 30'. By removing the opening joints 20'and 30', the entire peripheral surface of the side surface 11 of the weir column 10 is communicated (the above is the first gap closing step).

Here, in the first gap closing step, water is additionally injected into the boxes 20 and 30, and the water pressure from the boxes 20 and 30 and the water pressure from the inner space of the wall with respect to the opening joints 20'and 30'are applied. After balancing, an opening reinforcing column 65 and an opening reinforcing short beam 66 for refilling are installed on the sides of the opening joints 20'and 30', and the opening joints 20' and 30'are removed to form a box. A method of draining water from the bodies 20 and 30 and the space inside the wall may be applied.

According to the illustrated closed-type temporary cut-off body construction method, after the closed-type temporary cut-off body 200 is formed, water is drained from the internal space of the wall body, and the opening joints 20'and 30'are removed. As a result, the space between the closed temporary cut-off body 200 and the entire circumference of the side surface 11 of the weir pillar 10 can be made into a dry space, and repair work such as repairing the entire circumference of the side surface 11 of the weir pillar 10 can be performed.

For example, in the dry season, in the state of FIG. 4A, only the area of the side surface 11 of the weir pillar 10 surrounded by both the boxes 20 and 30 is made into a dry space, and repair work or the like is performed. Can be done.

[Box body constituting the temporary deadline body according to the embodiment and draft adjustment method of the box body]
Next, with reference to FIG. 6, an example of a box body constituting the temporary cut-off body according to the embodiment and an example of a draft adjustment method of the box body will be described. Here, FIG. 6A is a vertical cross-sectional view showing an example of the box body according to the embodiment, FIG. 6B is an enlarged view of the portion B of FIG. 6A, and the draft adjustment method of the box body according to the embodiment. It is a figure explaining. Hereinafter, the configuration of the upstream box body 20 will be described with reference to the upstream box body 20, but the configuration of the downstream box body 30 is substantially the same as the configuration of the upstream box body 20.

The box body 20 has a three-stage structure having a lower box body 21 arranged in the lower stage and upper box bodies 22 and 23 having a plurality of stages (two stages in the illustrated example) mounted on the lower box body 21. The lower box body 21 and the upper box bodies 22 and 23 are connected to each other. A wave pressure resistance panel 24 is attached to the uppermost surface of the uppermost box body 23.

Both the lower box body 21 and the upper box bodies 22 and 23 have a core material 20a made of a plurality of shaped steel materials, a steel skin plate 20b attached to the outer water side of the core material 20a, and the inside of the core material 20a. It is formed by a steel skin plate 20c attached to. If necessary, the steel skin plate 20c attached to the inside may be omitted.

The lower box body 21 has a hollow portion 21a, an injection / drainage pipe 21c that communicates the hollow portion 21a with the external water W, an injection / drainage valve 21b, an air supply / exhaust pipe 21e, an air supply / exhaust valve 21d, and an air supply / exhaust pipe 21e. It is provided with a pressure air supply unit 21f for supplying pressure air. In addition to the illustrated examples, the upper box bodies 22 and 23 may also include a hollow portion 21a, a water injection / drainage pipe 21c, a water injection / drainage valve 21b, and the like, similarly to the lower box body 21. Further, it may be a U-shaped integrated structure in a plan view instead of a multi-stage laminated structure as shown in the illustrated example.

As shown in the illustrated example, when the box body 20 has the lower box body 21 and the upper box bodies 22 and 23 having a plurality of stages, for example, when the scale of the box body 20 is large, the pier which is a work yard from the factory. The transportability during land transportation up to 300 (see FIG. 7) is improved, the size of the heavy machinery used for suspending the box body 20 at the pier 300 can be suppressed, and the suspension property is also improved. ..

Further, since the box body 20 is formed of a plurality of shaped steel materials serving as the core material 20a and a steel skin plate 20b attached to at least the outer water side of the core material 20a, the box body 20 has high rigidity and is possible. A box body 20 that is extremely lightweight can be formed, and the box body has excellent water pressure resistance when installed around the weir pillar 10 and is excellent in land transportability.

Further, since the wave pressure resistance panel 24 is attached to the uppermost surface of the box body 20, it is possible to suppress the intrusion of seawater or the like into the inside of the box body 20. Since the wave pressure resistance panel 24 bears only the wave pressure component, for example, a steel and thin panel is applied.

By opening and closing at least one of the injection / drainage valve 21b and the air supply / exhaust valve 21d, the amount of external water (ballast) injected into the hollow portion 21a is adjusted to desired the draft of the box body 20, and this draft adjustment The box body 20 can be floated and lowered in the Z1 direction. Therefore, for example, when sufficient draft cannot be secured, the draft can be adjusted by hoisting the box body 20 as desired without dredging the bottom ground G unnecessarily.

Here, the water injection / drainage valve 21b and the air supply / exhaust valve 21d can be opened and closed manually by a worker boarding the box body 20. Alternatively, both the water injection / drainage valve 21b and the air supply / exhaust valve 21d are automatic control valves, a sensor for measuring water intake is attached to the box body 20, and a user terminal or computer provided by a remote administrator can use water supply data. Is received from the sensor, an opening / closing command may be transmitted to the water injection / drainage valve 21b or the like according to the water intake data, and the water injection / drainage valve 21b or the like may be automatically opened / closed controlled based on the opening / closing command.

When the box body 20 is settled, at least water is injected into the hollow portion 21a by the water injection / drainage valve 21b. On the other hand, when the box body 20 is levitated, air is supplied to the hollow portion 21a by the air supply / exhaust valve 21d and drainage from the hollow portion 21a is executed by the water injection / drainage valve 21b.

[Method of transporting and installing the box body and the float carrier for transporting the box body according to the embodiment]
Next, with reference to FIGS. 7 to 11, an example of the method of transporting and installing the box body and an example of the float carrier for transporting the box body according to the embodiment will be described. Here, FIG. 7 is a process diagram illustrating an example of a method for transporting and installing the box body according to the embodiment in the order of (a) to (c), and is a float for transporting the box body according to the embodiment. It is a figure explaining an example of a pontoon. Further, FIG. 8A is a perspective view illustrating a guide unit provided inside the box body, and FIG. 8B is an enlarged view of a portion B of FIG. 8A. In addition, FIGS. 9 to 11 are process diagrams for explaining in detail the box body installation process among the examples of the box body transport / installation method according to the embodiment. In the illustrated example, a method of transporting the upstream box body 20 by the float carrier 330 and installing it on the weir pillar 10 is shown. It is conveyed in the same manner and installed on the weir column 10.

First, the configuration of the float pontoon 330 will be described. As shown in FIG. 7A, the float pontoon 330 includes a cove 331 to which the box body 20 is temporarily fixed, and the cove 331 has a pullback winch 332. A delivery winch 333 is provided. The float pontoon 330 is towed by a towboat 340 (see FIG. 7B) to the vicinity of the installation position of the weir pillar 10 with the box body 20 temporarily fixed to the cove 331. The float pontoon 330 may be a self-propelled pontoon.

Wires 334 and 335 are attached between the pull-back winch 332 and the delivery winch 333 and the box body 20, and when the box body 20 is installed on the dam column 10, the pull-back winch 332 and the delivery winch 332 and the delivery winch are installed. At 333, the horizontal posture of the box body 20 is adjusted via both wires 334 and 335.

Next, an example of a method of transporting and installing the box body will be described. In the method of transporting and installing the box, first, the lower box 21, the upper box 22, and 23 manufactured at the factory are loaded on the truck 310 and transported by land to the pier 300, which is a work yard. ..

A float carrier 330 is moored at the pier 300, and the lower box body 21 is first suspended in the cove 331 by the heavy equipment 320 at the pier 300.

Above the lower box body 21 suspended in the cove 331, the upper box bodies 22 and 23 are sequentially suspended by the heavy machine 320, and the lower box body 21 and the upper box bodies 22 and 23 are connected to each other to form a box. Form the body 20. This connection work can be performed using the float carrier 330 as a work floor. Further, in the process of forming the box body 20, the draft of the box body 20 can be adjusted as desired by injecting external water into the hollow portion 21a of the lower box body 21 at any time.

The box body 20 formed in the cove 331 is temporarily fixed to the cove 331, and as shown in FIG. 7B, the float pontoon 330 is towed to the weir pillar 10 to be constructed in the X3 direction by the towing boat 340.

A float pontoon 330 is moored to the side of the pier 300, which is a work yard, and the lower box bodies 21 and the upper tier boxes 22, 23 are sequentially suspended from the pier 300 to the cove 331 using a heavy machine 320, and the float pontoon is hung. With 330 as a work floor, the lower box body 21 and the upper box bodies 22 and 23 are sequentially connected to form the box body 20. Then, by adjusting the draft of the box body 20 at any time, the box body 20 is temporarily fixed to the cove 331 in a state where the box body 20 is desired to float and sink. In this way, by applying the float pontoon 330 provided with the cove 331, the lower box body 21 and the like can be hung from the pier 300 to the cove 331 with the float pontoon 330 as the work floor. A series of operations up to the formation of the box body 20 by connecting the boxes, the temporary fixing of the box body 20 to the float carrier 330, and the transportation of the box body 20 can be efficiently performed (the above is the box body). Transport process).

Next, as shown in FIG. 7C, the float pontoon 330 towed by the weir pillar 10 to be constructed is moored via a plurality of mooring wires 336. Here, in the construction area of the illustrated example, a management road or the like, which is an airborne restriction obstacle 400, exists above the weir column 10, and the weir column 10 is prevented from interfering with the airborne restriction obstacle 400. The box body 20 is installed.

More specifically, as shown in FIGS. 7C and 9, after mooring the float carrier 330 in the vicinity of the weir pillar 10, the draft is adjusted so that the box 20 does not interfere with the airborne restriction obstacle 400. Then, prior to the installation, the box body 20 is desired to settle in the X4 direction.

Next, in the cove 331 of the float carrier 330, the box body 20 is wired in the X5 direction by using the pull-back winch 332 and the delivery winch 333 and the wires 334 and 335 attached between the box body 20 and the box body 20. The box body 20 is installed in the dam body 10 while a part of the dam body 10 is housed in the inner 25 of the box body 20 through the opening 26 provided in the box body 20. Box installation process).

Here, inside the box body 20, as shown in FIGS. 8A and 8B, a guide rail 28 extending inward from the inner side surface of the box body 20 and a guide roller 29 rotatable at the tip of the guide rail 28. A plurality of guide units 27 are provided. The plurality of guide rails 28 are assembled so as to surround the side surface 11 of the end portion of the weir pillar 10 from the side.

A double pipe of an outer pipe 28b and an inner pipe 28a is attached to the tip of the guide rail 28, and a guide roller 29 is rotatably attached to the tip of the inner pipe 28a. Further, the inner pipe 28a is configured to extend freely relative to the outer pipe 28b. The outer pipe may be configured to extend freely with respect to the inner pipe.

As the overhanging form of the inner pipe 28a, there are an automatic overhanging form in which the double pipe is provided with a cylinder mechanism (not shown) and the like and the cylinder mechanism and the like are automatically controlled, and a manual overhanging form by an operator. ..

In the box body transport process, the inner pipe 28a is housed inside the outer pipe 28b. Therefore, when the end of the weir pillar 10 is housed inside the box body 20, the weir pillar is housed. Each guide roller 29 is in a retracted position from the side surface 11 of the 10.

After shifting to the box body installation step, the guide roller 29 is brought into contact with the side surface 11 of the weir pillar 10 by projecting the inner pipe 28a to the side surface side of the weir pillar 10 with respect to the outer pipe 28b. In this state, the pullback winch 332 and the delivery winch 333 are operated to perform wiring using the wires 334 and 335, so that the posture of the box body 20 is adjusted while sliding each guide roller 29 on the side surface 11 of the weir pillar 10. Do. Therefore, the horizontal posture of the box body 20 with respect to the weir pillar 10 can be efficiently adjusted (particularly fine adjustment).

After adjusting the horizontal posture of the box body 20 with respect to the dam pillar 10, for example, by injecting water into the hollow portion 21a of the lower box body 21, the box body 20 is formed as shown in FIGS. 8 (b) and 10. It is settled vertically downward along the side surface 11 of the dam column 10 in the X6 direction, and the lower end of the box body 20 is landed on the bottom plate 15. Then, as will be described in detail below, the installation of the box body 20 is completed by fixing the lower end of the box body 20 at a predetermined position on the bottom plate 15.

After the box body 20 is installed, as shown in FIG. 11, the float carrier 330 that has carried the box body 20 is retracted, and instead, a separate float carrier 330A equipped with the heavy machine 320 is attached to the box body 20. The guide unit 27 is removed in close proximity, and a temporary support work 60 is installed inside the box body 20.

[Method of submerging and fixing the box body and the fixing structure of the box body, the water blocking structure of the box body and the bottom plate, and the water blocking structure of the box body and the weir column according to the embodiment]
Next, with reference to FIGS. 12 to 18, an example of the method of submerging and fixing the box body and an example of the fixing structure of the box body, an example of the water blocking structure of the box body and the bottom plate, and the box body and the weir pillar according to the embodiment. An example of the waterproof structure of the above will be described. Here, FIG. 12 is a process diagram for explaining an example of the method of sinking and fixing the box body according to the embodiment, and also shows an example of the fixing structure of the box body (fixing structure of the box body and the bottom plate) according to the embodiment. , It is a figure which shows an example of the water-stop structure of a box body and a bottom board. Further, FIG. 13 is a process diagram showing a method of processing the joint opening portion of the bottom plate in the order of (a) to (d), and FIG. 14 is a process diagram showing the joint step of the bottom plate in the order of (a) to (e). It is a process drawing which shows the processing method of the defective part. Further, FIG. 15 is a diagram showing an example of a fixed structure of the box body (fixed structure of the box body and the weir pillar) and an example of the water blocking structure of the box body and the weir pillar according to the embodiment. Further, FIG. 16A is a perspective view showing a connection portion between the wall body and the temporary gate, and FIG. 16B is an enlarged plan view of the portion B of FIG. 16A. Further, FIG. 17A is a side view showing an example of the hinge mechanism of the box body and the wall body, and FIG. 17B is a view taken along the line BB of FIG. 17A, which is a plane showing the water blocking structure in the hinge mechanism. FIG. 17C is a view taken along the line CC of FIG. 17A, and is a plan view showing both a water blocking structure in the hinge mechanism. Further, FIG. 18 is a plan view showing a water blocking structure on the end side surface on the outer water side of both the upstream side wall body and the downstream side wall body when the downstream side wall body is closed.

While explaining the method of submerging and fixing the box body, the fixing structure of the box body formed by this fixing method will be described. Here, the "fixed structure of the box body" includes a fixed structure of the box body and the bottom plate and a fixed structure of the box body and the weir column.

In the method of submerging and fixing the box body, first, a diver or the like installs the leg guide steel material 18 on the bottom plate 15 below the weir pillar 10. The leg guide steel material includes a leg guide liner 17 that is continuous in a strip shape along the installation position where the box body 20 is installed, and legs on the outside of the leg guide liner 17 (the side where the box body 20 is sunk). It has a plurality of guide portions 18 provided at intervals in the longitudinal direction of the portion guide liner 17. The guide portion 18 includes a tapered piece 18a inside the upper end.

The leg guide liner 17 is formed of a shaped steel material such as H-shaped steel, is arranged inside along the contour of the box body 20 at the landing position of the box body 20, and is arranged inside the bottom plate 15 via bolts 17b. Both sides of the leg guide liner 17 are sandwiched and positioned by the fixed shaped steel material 17a such as angle steel which is fixed by the leg guide liner 17.

A plurality of guide portions 18 are fixed to the outer surface of the leg guide liner 17 by welding or the like at intervals (the above is the guide installation step).

As shown in FIG. 12, the lower end of the box body 20 that has settled vertically downward along the side surface 11 of the weir pillar 10 in the Z2 direction is guided in the Z3 direction along the tapered piece 18a of the guide portion 18, and the bottom plate 15 It is landed in a predetermined position. Since the leg guide steel materials 17 and 18 are fixed to the bottom plate 15 in this way, the box body 20 guided by the guide portion 18 and landed on the bottom is positioned outside the strip-shaped leg guide liner 17. Then, the legs are indirectly fixed to the bottom plate 15 via the leg guide steel materials 17 and 18, and the box body and the bottom plate fixing structure 120 (an example of the box body fixing structure) are formed (the above is the submerged fixing step).

In the submerged fixing step, if there is a gap between the guide portion 18 which is the leg guide steel material and the leg portion on the side surface of the box body 20, the liner plate 19 is fitted into the gap as shown in FIG. Close the gap with.

In this way, by fitting the liner plate 19 into the gap that may exist locally to close the gap, the legs on the side surface of the box body 20 are guided by the legs over the entire length of the leg guide liner 17. It can be positioned without a gap between the steel materials 17 and 18.

As shown in FIG. 12, in the state where the fixed structure 120 of the box body and the bottom plate is formed, the water blocking structure 130 of the box body and the bottom plate is also formed. Hereinafter, the waterproof structure 130 of the box body and the bottom plate will be described.

On the side (external water side) of the side surface of the leg of the box body 20 landed on the bottom plate 15, the leg steel plate 20d has a gap between the side surface of the box body 20 (steel skin plate 20b). It is fixed via the first gap holding bolt 20h, and the first water blocking material 20e for the legs (an example of the first water blocking material) is housed in the gap, and the tip thereof is in contact with the bottom plate 15. ..

Above the first water blocking material 20e for the legs, a first pushing bolt 20i for pushing the first water blocking material 20e for the legs downward in the Y1 direction is provided, and the legs are provided with the first pushing bolt 20i. The first water blocking material 20e for use is pushed into the bottom plate 15.

Here, a deformation guide hole 20f is provided at the tip of the first water stop material 20e for the leg, and when pushed into the bottom plate 15, the tip of the first water stop material 20e for the leg is deformed to the deformation guide hole 20f. The tip of the first water blocking material 20e for the legs can easily penetrate into the unevenness of the surface of the bottom plate 15.

Further, the first water blocking material 20e for the legs is provided with a first elongated hole 20 g in the vertical direction, and the first gap holding bolt 20 h penetrates the first elongated hole 20 g.

As described above, the first water blocking material 20e for the leg is provided with the first elongated hole 20 g in the vertical direction, and the first gap holding bolt 20h penetrates the first elongated hole 20 g, so that the first elongated hole for the leg is used. 1 When the water blocking material 20e is pushed into the bottom plate 15, the first gap holding bolt 20h that stays inside the first elongated hole 20g does not push in from the first water blocking material 20e for the legs, and keeps its posture. Can be retained.

On the other hand, inside the lower surface of the leg portion of the box body 20, 21 g of a second water blocking material for the leg (an example of the second waterproof material) that can be expanded and contracted by the internal air or can be expanded with water is provided. Has been done. A water blocking structure is formed between the second water blocking material for the legs 21g and the bottom plate 15 by the supply of air or water swelling, and between the first water blocking material 20e for the legs and the bottom plate 15. Even if the external water has passed through the water-stopping structure of the above, the water-stopping structure between the second water-stopping material for the legs 21 g and the bottom plate 15 suppresses the flow of external water to the inside of the box body 20. It can be deterred.

In this way, the double stop structure of the water stop structure between the first water stop material 20e for the legs and the bottom plate 15 and the water stop structure between the second water stop material 21 g for the legs and the bottom plate 15 The water structure forms a water blocking structure 130 for the box body and the bottom plate.

Next, a repair method will be described when there is a joint opening portion in the joint existing at the installation position of the box body 20 on the bottom plate 15 (the lower surface position of the leg portion of the box body 20) and when there is a joint step / defect portion. To do.

First, to outline the repair method when there is a joint opening, as shown in FIG. 13A, the joint opening H exists on the surface of the joint M of the bottom plate 15, and the deposit T is present on the joint opening H. If it is deposited, prior to the landing of the box body 20, as shown in FIG. 13B, the deposit T is removed by a water jet or the like with a diver or the like, and the joint opening portion H is cleaned. ..

Next, as shown in FIG. 13 (c), the cleaned joint opening H is filled with an early-strength grout SG to smooth the surface, and then, as shown in FIG. 13 (d), the box body. By sinking 20 and landing on the bottom plate 15, the joint opening portion H is filled with the early-strength grout SG and the box body 20 is landed on the bottom.

Next, to outline the repair method when there is a joint step / defect, as shown in FIG. 14A, there is a joint step / defect D on the surface of the joint M of the bottom plate 15, and there is a joint step / defect D. When the deposit T is deposited in the part D, as shown in FIG. 14B, the defect shape is measured after removing the deposit T with a water jet or the like by a diver or the like.

On the lower surface of the leg portion of the box body 20 to be sunk, a bag body 21h having a size for filling the measured defect shape is provided, and as shown in FIGS. 14 (c) and 14 (d), the bag is provided. The box body 20 is landed on the bottom plate 15 so that the body 21h is accommodated in the joint step / defect portion D. Here, as the bag body 21h, a bag body made of a resin material such as nylon can be applied.

Next, as shown in FIG. 14 (e), the joint step / defect portion D can be filled with the fast-strength grout SG by filling the bag body 21h from the inside of the box body 20 with the fast-strength grout SG.

By adding the bag body 21h filled with the fast-strength grout SG to the first water blocking material 20e for the legs and the second water blocking material 21g for the legs, the water blocking structure 130 of the box body and the bottom plate is locally formed. Has a triple waterproof structure.

Returning to the explanation of the method of sinking and fixing the box body, in the sinking and fixing step, the box body 20 is sunk at a predetermined position of the bottom plate 15, and the fixing structure 120 of the box body and the bottom plate and the water blocking structure 130 of the box body and the bottom plate are formed. After that, the box body 20 is further fixed to the side surface 11 of the weir pillar 10.

Specifically, as shown in FIG. 15, the end portion of the box body 20 (the end portion that abuts on the side surface 11 of the weir pillar 10) is provided with an extrusion mechanism 85 and a bearing plate 88 that can be extruded by the extrusion mechanism 85. Is provided.

The extrusion mechanism 85 of the illustrated example includes two free nuts 86 and a rod 87 that advances and retreats by the rotation of each free nut 86, and a bearing plate 88 is attached to the tips of the two rods 87.

The box body 20 has a core material 20a, a steel skin plate 20b on the outer water side, and a steel skin plate 20c on the inner side, and the steel skin plates 20b and 20c, respectively, are provided with openings (not shown). Has been done.

In the submerged fixing step, a worker puts his / her hand through each opening to rotate the two free nuts 86, so that the two rods 87 are projected toward the weir column 10 side in the X8 direction, and the bearing plate 88 is projected on the weir column 10 side. The box body 20 is fixed to the weir pillar 10 in a non-movable state by being pressed against the side surface 11 of the box body 20.

Further, inside the fixing portion of the end portion of the weir pillar 10 and the box body 20, a fixing jig 82 straddling the side surface 11 of the weir pillar 10 and the side surface of the end portion of the box body 20 is attached, and the fixing jig 82 is attached. One end of the tool 82 is fixed to the side surface 11 of the weir pillar 10 with a fixing bolt 83, and the other end of the fixing jig 82 is fixed to the side surface of the box body 20 with a separate fixing bolt 84. .. In addition to the illustrated example, an engaged portion may be attached instead of the fixing jig 82, and the fixing jig may be engaged with the engaged portion. In this way, the bearing plate 88 is pressed against the side surface 11 of the weir pillar 10 to fix the box body 20 to the weir pillar 10 in a non-movable state, and the weir pillar 10 and the box are fixed via the fixing jig 82. By fixing the body 20 with bolts, a fixed structure 140 of the box body and the weir pillar (an example of the fixed structure of the box body) is formed.

As described above, in the submerged fixing step, the legs of the box body 20 are positioned and fixed to the bottom plate 15 via the leg guide steel materials 17 and 18, and the end portions of the wall surface of the box body 20 are the extrusion mechanism 85 and the support. The pressure plate 88, the fixing jig 82, and the fixing bolts 83 and 84 are firmly fixed to the side surface 11 of the weir column 10. As shown in FIG. 15, in the state where the fixed structure 140 of the box body and the weir pillar is formed, the water blocking structure 150 of the box body and the weir pillar is also formed. Hereinafter, the water blocking structure 150 of the box body and the weir column will be described.

On the side (external water side) of the side surface of the end portion where the box body 20 is fixed to the side surface 11 of the weir column 10, the side steel plate 80a is between the side surface of the box body 20 (steel skin plate 20b). A gap is placed in the box and fixed via a second gap holding bolt 80f. The first water stop plate 80b (an example of the first water stop plate) at the end of the box is accommodated in the gap, and the tip thereof is a side surface. It touches in a state of being wrapped around 11.

At the other end of the box body end first water stop plate 80b, a second push-in bolt 80g for pushing the box body end first water stop plate 80b laterally in the Y2 direction is provided, and a second push-in bolt 80g is provided. The first water stop plate 80b at the end of the box is pushed into the side surface 11 of the weir pillar 10.

Here, the first water stop plate 80b at the end of the box is provided with a second elongated hole 80c extending in the horizontal direction, and the second gap holding bolt 80f penetrates the second elongated hole 80c. ..

In this way, the second elongated hole 80c in the horizontal direction is provided in the first water stop plate 80b at the end of the box, and the second gap holding bolt 80f penetrates the second elongated hole 80c, whereby the end of the box is formed. When the first water stop plate 80b is pushed toward the weir pillar 10, the second gap holding bolt 80f that stays inside the second elongated hole 80c is pushed from the first water stop plate 80b at the end of the box. It is possible to maintain that posture.

Further, between the box body end first water stop plate 80b and the steel skin plate 20b, a box body end second water stop plate 80d (an example of a second water stop plate) having a round hole 80e is interposed. However, its end is in contact with the side surface 11 of the weir column 10. Then, the second gap holding bolt 80f penetrating the second elongated hole 80c further penetrates the round hole 80e.

As described above, the second elongated hole 80c is formed by having the second water stop plate 80d at the end of the box body provided with the round hole 80e into which the second gap holding bolt 80f is fitted on the side of the second elongated hole 80c. The passage of external water into the inside of the box body 20 through the box body 20 can be suppressed or suppressed by the second water stop plate 80d at the end of the box body.

Further, inside the steel skin plate 20b, the end of the box is stretchable or water-swellable by internal air so as to block between the side surface 11 of the weir column 10 and the end face of the box. The fourth water blocking material (an example of the fourth water blocking material) is provided.

The fourth water blocking material at the end of the box swells due to the supply of air or water swelling to form a water blocking structure between the fourth water blocking material at the end of the box and the side surface 11 of the dam column 10, and the first water blocking plate at the end of the box 80b. Even if external water temporarily passes through the water blocking structure with the box body end second water blocking plate 80d, the water stopping structure between the box body end fourth water blocking material and the side surface 11 of the dam column 10 , It is possible to suppress or suppress the flow of external water into the box body 20.

In this way, between the end of the box 20 and the side surface 11 of the dam pillar 10, the box end first water stop plate 80b, the box end second water stop plate 80d, and further the box end A box body having a triple water-stopping structure and a water-stopping structure 150 of a dam column are formed by the fourth water-stopping material.

Next, with reference to FIG. 16, the water blocking structure at the ends of the upstream side wall body 40 and the temporary gate 73 will be described. In FIG. 16A, for example, the end support steel material 46 shown in FIG. 3 is not shown.

As shown in FIG. 16A, a pair of drop groove forming steel materials 48 extending in the vertical direction are attached to the side surface of the upstream side wall body 40 on the outer water side.

As shown in FIG. 16B, a temporary gate end water blocking material 49 having a P-shaped cross section is attached to both side surfaces of the end portion of the temporary gate 73 whose corners are dropped between the pair of drop groove forming steel materials 48. ing. When the end of the temporary gate 73 is angled between the pair of drop groove forming steel materials 48, the two temporary gate end water blocking materials 49 come into contact with the corresponding drop groove forming steel material 48. A water blocking structure is formed at the ends of the upstream side wall body 40 and the temporary gate 73.

By applying the temporary gate end water blocking material 49 having a P-shaped cross section, sufficient water stopping is guaranteed regardless of the direction in which the water pressure acts.

Next, with reference to FIGS. 17 and 18, the water blocking structures of the hinge mechanism 41 and the hinge mechanism 41 of the upstream side box body 20 and the upstream side wall body 40 will be described, and the upstream side wall body 40 and the downstream side wall body 50 will be described. The water-stopping structure on the side surface of the end on both external water sides when the blockage occurs will be described. The structure of the hinge mechanism 51 of the downstream box body 30 and the downstream side wall body 50 and the water blocking structure thereof is substantially the same.

As shown in FIGS. 17A and 17B, the box body 20 and the wall body 40 each include a box body hinge 42 and a wall body hinge 43, and the box body hinge 42 and the wall body hinge 43 constitute a hinge mechanism 41, respectively. ..

As shown in FIG. 17A, the wall hinge 43 includes two first horizontal hinge pieces 43 arranged with a third gap 41a above and below, and pins provided by the two first horizontal hinge pieces 43. It includes a hinge pin 44 that penetrates the hole 43a. On the other hand, the box hinge 42 includes a second horizontal hinge piece 42 that is loosely fitted in the third gap 41a and is provided with a pin hole 42a through which the hinge pin 44 penetrates. The thickness of the second horizontal hinge piece 42 is set to be smaller than the height of the third gap 41a.

With this configuration, the wall body 40 can be moved up and down by moving the two first horizontal hinge pieces 43 up and down with respect to the second horizontal hinge piece 42. As a result, when the wall body 40 is rotated on the bottom plate 15, if the surface unevenness of the bottom plate 15 is large, the wall body 40 is moved up and down at any time to interfere with the surface unevenness of the bottom plate 15. It becomes possible to rotate smoothly without causing it.

Further, as shown in FIGS. 17B and 17C, a hinge first water blocking material 45a (an example of the first water blocking material) is provided on at least a part of the side surface of the first horizontal hinge piece 43 included in the wall hinge 43. It is attached, and a hinge second water blocking material 45b (an example of the second water blocking material) projects from the side surface of the box body 20 toward the wall hinge 43. Then, the hinge first water blocking material 45a and the hinge second water blocking material 45b are in contact with each other over the X7 range (90 degree range), which is the rotation range of the first horizontal hinge piece 43.

With this configuration, it is possible to guarantee high water stopping property in the rotating portion (hinge mechanism 41) of the box body 20 and the wall body 40.

Further, as shown in FIG. 18, of the end side surfaces on the outer water side of both the upstream side wall body 40 and the downstream side wall body 50 when the downstream side wall body 50 is closed, one end side surface has a wall body closing end portion third stop. A water material 91 (an example of a third water blocking material) is attached, and a fourth water blocking material 92 (an example of a fourth water blocking material) at the closed end of the wall body is attached to the side surface of the other end, and the wall. The end of the body closing end part 4th water blocking material 92 comes into contact with the wall body closing end part 3rd water blocking material 91 from the outside, and the end part of the wall body closing end part 4th water blocking material 92 is caused by the water pressure of the external water. Is pressed against the third water blocking material 91 at the closing end of the wall.

With this configuration, the end portion of the wall body closing end portion 4th water blocking material 92 can be pressed against the wall body closing end portion 3rd water blocking material 91 by the water pressure of external water, and both wall bodies 40 and 50 can be pressed. It is possible to guarantee high water stopping property at the closed portion.

[Temporary gate and temporary gate elevating system according to the embodiment]
Next, an example of the temporary gate and an example of the temporary gate elevating system according to the embodiment will be described with reference to FIGS. 19 to 22. Here, FIG. 19 is a perspective view of an example of the temporary gate according to the embodiment, and FIG. 20 is a front view of the temporary gate according to the embodiment. Further, FIG. 21 is a diagram showing an example of a hardware configuration of a user terminal, and FIG. 22 shows an overall configuration of an example of a temporary gate elevating system according to an embodiment, and a traction tool constituting the temporary gate elevating system. It is a figure which shows an example of the functional structure of a user terminal.

As shown in FIGS. 19 and 20, a plurality of temporary columns are provided with a first drop groove 13 on the side surface 11 of the weir column 10 and a second drop groove 72 on the side of the weir column 10 at intervals. 71 stands upright, and the box body 20 has a wall body 40 provided with a third drop groove 47.

The temporary support column 71 is formed of H-shaped steel, and the left and right spaces formed by the web and the two flanges form the second drop groove 72.

Further, the legs of the temporary support column 71 are formed of a tubular material 71'such as a square pipe, and by covering the existing convex portion 15a provided on the bottom plate 15 with the tubular material 71', the temporary support column 71 The legs are erected on the bottom plate 15. A fixing jig 71a such as angle steel is welded to the lower end of the side surface of the tubular material 71', and when the existing convex portion 15a is covered with the tubular material 71', a piece of the fixing jig 71a is placed on the bottom plate 15. Placed. For example, a diver or the like fixes this piece to the bottom plate 15 with fixing bolts 71b, so that the temporary support column 71 is fixed to the bottom plate 15.

Support beams 77 are installed at the upper ends of the plurality of temporary columns 71, and a plurality of towing tools 78 (two in the illustrated example) are installed between the temporary columns 71 in the support beams 77. In this way, by installing the towing tools 78 at various places of the support beams 77 installed at the upper ends of the plurality of temporary columns 71, the towing tools 78 can be installed in various ways, and the installation positions can be set. It can be changed at any time.

The temporary gate 73 is integrally formed by, for example, three pieces of corner dropping materials 74 and 75 being connected to each other via a connecting metal fitting 76. In the illustrated example, the lower two corner dropping materials 74 are formed. It is an existing corner removing material that already exists, and the upper corner removing material 75 is a new new corner removing material. A hanging hook 75a is provided on the upper surface of the newly installed corner drop material 75, and the lower end of the hanging material 79 such as a chain hanging from the towing tool 78 is locked to the hanging hook 75a.

The traction tool 78 is an electric chain block, and as described in detail below, the administrator remotely drives the electric chain block 78 to raise and lower the temporary gate 73 in the Y3 direction. There is.

According to the temporary gate 73 in the illustrated example, even when the temporary gate 73 is installed, the temporary gate 73 can be raised and lowered at any time in the same manner as the main gate 14, and seawater and river water can be exchanged as needed. It can be tolerated. Further, according to the temporary gate 73 of the illustrated example, since each temporary gate 73 is raised and lowered by the unique traction tool 78, a part or all of all the temporary gates 73 having different corners are removed. It can be raised and lowered as desired.

Next, the temporary gate elevating system will be described.

As shown in FIG. 22, the temporary gate elevating system 500 includes a traction tool 78 included in the temporary gate 73 included in the temporary cutoff body 200, and a user terminal 95 provided by an administrator or the like. The temporary gate elevating system 500 is formed by connecting the electric chain block 78 and the user terminal 95 via the network 98. Examples of the user terminal 95 include a personal computer (PC), a tablet, a smartphone, and the like.

The network 98 includes a public network such as the Internet, a wireless network such as a mobile phone network, a dedicated network such as a VPN (Virtual Private Network), a LAN (Local Area Network), and the like.

As shown in FIG. 21, the user terminal 95 includes a CPU 95e, a main storage device 95f, an auxiliary storage device 95g, a communication IF (interface) 95h, and an input / output IF95i, which are connected to each other by a connection bus 95j. The main storage device 95f and the auxiliary storage device 95g are computer-readable recording media. The above components may be provided individually, or some components may not be provided.

The CPU 95e is also called an MPU (Microprocessor) or a processor, and the CPU 95e may be a single processor or a multiprocessor. The CPU 95e is a central processing unit that controls the entire user terminal 95 composed of a computer. The CPU 95e, for example, deploys a program stored in the auxiliary storage device 95g executably in the work area of the main storage device 95f, and controls peripheral devices through the execution of the program, thereby performing a function matching a predetermined purpose. I will provide a.

The main storage device 95f stores a computer program executed by the CPU 95e, data processed by the CPU 95e, and the like. The main storage device 95f includes, for example, a flash memory, a RAM (Random Access Memory), and a ROM (Read Only Memory). The auxiliary storage device 95g stores various programs and various data in a readable and writable recording medium, and is also called an external storage device. The auxiliary storage device 95g stores, for example, an OS (Operating System), various programs, various tables, and the like. The OS includes, for example, a communication interface program that exchanges data with an external device or the like connected via the communication IF95h. The external device and the like include, for example, an electric chain block 78 and the like connected to a network.

The auxiliary storage device 95g is used, for example, as a storage area for assisting the main storage device 95f, and stores a computer program executed by the CPU 95e, data processed by the CPU 95e, and the like. The auxiliary storage device 95 g is a silicon disk including a non-volatile semiconductor memory (flash memory, EPROM (Erasable Programmable ROM)), a hard disk drive (HDD) device, a solid state drive device, or the like. Further, as the auxiliary storage device 95 g, a drive device of a removable recording medium such as a CD drive device, a DVD drive device, and a BD drive device is exemplified, and as the removable recording medium, a CD, DVD, BD, USB (Universal Serial Bus) is exemplified. ) Memory, SD (Secure Digital) memory card and the like are exemplified.

The communication IF 95h is an interface with the network 98 to which the user terminal 95 is connected. The communication IF95h transmits a drive signal and a drive stop signal to the respective electric chain blocks 78 included in each temporary gate 73 via the network 98.

The input / output IF95i is an interface for inputting / outputting data to / from a device connected to the user terminal 95. For example, a keyboard, a pointing device such as a touch panel or a mouse, an input device such as a microphone, or the like is connected to the input / output IF95i. The user terminal 95 receives an operation instruction or the like from an operator who operates the input device via the input / output IF95i. Further, for example, a display device such as a liquid crystal panel (LCD: Liquid Crystal Display) or an organic EL panel (EL: Electroluminescence), and an output device such as a printer or a speaker are connected to the input / output IF95i.

As shown in FIG. 22, the user terminal 95 provides at least various functions of the second communication unit 95a and the operation unit 95b by executing the program by the CPU 95e.

On the other hand, the electric chain block 78 has a first communication unit 78a and a traction drive unit 78b.

The command signal from the operation unit 95b of the user terminal 95 is transmitted to the first communication unit 78a of the electric chain block 78 via the second communication unit 95a, and the traction drive unit 78b executes the elevating control of the temporary gate 73. ..

According to the temporary gate elevating system 500 of the illustrated example, the elevating control of the temporary gate 73 can be remotely performed using the user terminal 95. Each temporary gate 73 may be moved up and down by a manual chain block.

Other embodiments may be obtained in which other components are combined with respect to the configurations listed in the above embodiments, and the present invention is not limited to the configurations shown here. This point can be changed without departing from the spirit of the present invention, and can be appropriately determined according to the application form thereof.

1: Weir (river mouth weir)
10: Weir pillar 10a: First gap 11: Side surface 12: Main gate drop groove 13: First drop groove 14: Main gate 15: Bottom plate 15a: Existing convex part 16: Lifting mechanism 17: Leg guide liner ( Leg guide steel)
17a: Fixed steel material 17b: Bolt 18: Guide part (leg guide steel material)
18a: Taper piece 19: Liner plate 20: Upstream box body (box body)
20': Opening joint 20a: Core material (shaped steel material)
20b, 20c: Steel skin plate 20d: Leg steel plate 20e: First water blocking material for legs (first water blocking material)
20f: Deformation guide hole 20g: First elongated hole 20h: First gap holding bolt 20i: First pushing bolt 21: Lower box body 21a: Hollow part 21b: Water injection / drainage valve 21c: Water injection / drainage pipe 21d: Air supply / exhaust valve 21e: Air supply / exhaust pipe 21f: Compressed air supply unit 21g: Second water stop material for legs (second water stop material)
21h: Bag body (third water blocking material)
22: Upper box body (second box body)
23: Upper box body (third stage box body)
24: Wave pressure resistance panel 25: Internal 26: Opening 27: Guide unit 28: Guide rail 28a: Inner pipe 28b: Outer pipe 29: Guide roller 30: Downstream box body (box body)
30': Opening joint 31: Lower box body 32: Upper box body (second stage box body)
33: Upper box body (third box body)
34: Wave pressure resistance panel 35: Inside 36: Opening 40: Upstream side wall body (wall body)
41: Hinge mechanism 41a: Third gap 42: Box hinge (second horizontal hinge piece)
42a: Pin hole 43: Wall hinge (first horizontal hinge piece)
43a: Pin hole 44: Hinge pin 45a: Hinge 1st water blocking material (1st water blocking material)
45b: Hinge 2nd water blocking material (2nd water blocking material)
46: End support steel material 47: Third drop groove 48: Drop groove forming steel material 49: Temporary gate end water blocking material 50: Downstream side wall body (wall body)
51: Hinge mechanism 60: Temporary support 61: Support 62: Cut beam 63: Support 64: Short beam 65: Opening reinforcement support 66: Opening reinforcement short beam 67: Wall support support 68: Wall support short Cutting beam 69: Second gap 71: Temporary support 71': Cylinder material 71a: Fixing jig 71b: Fixing bolt 72: Second drop groove 73: Temporary gate 74: Existing corner drop material (corner drop material)
75: New corner drop material (corner drop material)
75a: Suspension hook 76: Connection hardware 77: Support beam 78: Towing tool (electric chain block)
78a: First communication unit 78b: Tow drive unit 79: Suspended material (chain)
80a: Side steel plate 80b: Box body end first water stop plate (first water stop plate)
80c: 2nd elongated hole 80d: 2nd water stop plate at the end of the box (2nd water stop plate)
80e: Round hole 80f: 2nd gap holding bolt 80g: 2nd pushing bolt 81: 4th water blocking material at the end of the box (4th water blocking material)
82: Fixing jig 83, 84: Fixing bolt 85: Extrusion mechanism 86: Free nut 87: Rod 88: Support plate 91: Wall body closing end 3rd waterproof material (3rd waterproof material)
92: 4th water blocking material at the closed end of the wall (4th water blocking material)
95: User terminal 95a: Second communication unit 95b: Operation unit 98: Network 100: Open type temporary deadline (temporary deadline)
120: Fixed structure of box and bottom (fixed structure of box)
130: Water-stopping structure of box and bottom plate 140: Fixed structure of box and dam pillar (fixed structure of box)
150: Water-stop structure of box body and weir pillar 200: Closed type temporary cut-off body (temporary cut-off body)
300: Pier 310: Truck 320: Heavy equipment 330, 330A: Float pontoon 331: Cove 332: Pullback winch 333: Sending winch 334, 335: Wire 336: Mooring wire 340: Towing boat 400: Airborne restricted obstacle (management road)
500: Temporary gate elevating system W: External water (seawater, river water)
G: Underwater ground M: Joint H: Joint opening D: Joint step / defect T: Sediment SG: Early-strength grout

Claims (7)

In a weir having a weir pillar and a main gate that can be raised and lowered extending to the side of the weir pillar, a temporary cut-off body constructed around the weir pillar is formed and arranged around the weir pillar. It is a method of transporting and installing the box body to be installed.
A box transport process in which the box is temporarily fixed in the cove of a float carrier provided with a cove, and the float carrier is self-propelled or towed to the vicinity of the installation position of the weir pillar.
A sending winch and a pull-back winch are provided in the cove, and the posture of the box body is adjusted by using the sending winch and the pull-back winch and a wire attached between the pull-back winch and the box body. It is characterized by having a box body installation step of installing the box body in the dam body while accommodating a part of the dam body inside the box body through an opening provided in the box body. , How to transport and install the boxes that make up the temporary deadline. Inside the box body, a plurality of guide units are provided, which are composed of a guide rail extending inward from the inner side surface of the box body and a guide roller rotatable at the tip of the guide rail. Ori,
In the box body installation step, a plurality of the guide rollers are brought into contact with the side surface of the weir pillar, and the horizontal posture of the box body is adjusted with respect to the weir pillar while rotating the plurality of guide rollers. The method for transporting and installing a box body constituting the temporary cut-off body according to claim 1, wherein the box body is sunk with respect to the weir pillar while rotating a plurality of the guide rollers. A double pipe composed of an outer pipe and an inner pipe having different dimensions is attached to the tip of the guide rail, and the guide roller is attached to the tip of either the outer pipe or the inner pipe. Ori,
In the box body transporting step, the inner pipe is housed inside the outer pipe.
The second aspect of the present invention, wherein in the box body installation step, one of the outer pipe and the inner pipe is relatively projected so that the guide roller is brought into contact with the side surface of the weir pillar. How to transport and install the boxes that make up the temporary deadline. The box body
A hollow portion, an injection / drainage pipe that communicates the hollow portion with external water, an injection / drainage valve, an air supply / exhaust pipe, an air supply / exhaust valve, and a pressure air supply unit that supplies pressure air to the air supply / exhaust pipe are provided. ,
The box body floats and sinks by opening and closing at least one of the water injection / drainage valve and the air supply / exhaust valve.
In the temporary fixing of the box body to the cove in the box body transport step, the float pontoon is positioned on the side of the pier, the box body is suspended from the pier by using a heavy machine, and the float is suspended from the cove. The method for transporting and installing a box body constituting the temporary deadline body according to any one of claims 1 to 3, wherein the box body is temporarily fixed to the cove with a pier as a work floor. The box body
The lower box body arranged in the lower tier and
It has one or more upper boxes mounted on the lower box, and has one or more upper boxes.
At least one of the upper box body and the lower box body has a hollow portion, an injection / drainage pipe that communicates the hollow portion with external water, an injection / drainage valve, an air supply / exhaust pipe, an air supply / exhaust valve, and the air supply / exhaust. Equipped with a pressure air supply unit that supplies pressure air to the pipe,
The box body floats and sinks by opening and closing at least one of the water injection / drainage valve and the air supply / exhaust valve.
In the temporary fixing of the box body to the cove in the box body transport step, the float pontoon is positioned on the side of the pier, the lower box body is suspended from the pier by using a heavy machine, and then the lower box body is suspended from the pier. In addition, the upper box body is hung on the lower box body, and the lower box body and the upper box body are connected to each other by using the float pier as a work floor to assemble the box body on the water. A method for transporting and installing a box body constituting the temporary deadline body according to any one of claims 1 to 3, which is a feature. When an airborne restriction obstacle exists above the weir column on which the box body is installed, in the box body installation step, the box body and the airborne restriction obstacle are present in front of the airborne restriction obstacle. Claimed, wherein the box is adjusted to a predetermined subsidence level so as not to interfere, the box is passed under the airborne restriction obstacle, and the box is installed with respect to the weir column. Item 4. A method for transporting and installing a box body constituting the temporary deadline body according to Item 4. In a weir having a weir pillar and a main gate that can be raised and lowered extending to the side of the weir pillar, a temporary cut-off body constructed around the weir pillar is formed and arranged around the weir pillar. It is a float pontoon for transporting the box body that constitutes the temporary cut-off body that transports the box body to be installed.
The float pontoon has a cove in which the box is temporarily fixed.
The cove is provided with a sending winch and a pulling winch.
With the box body temporarily fixed to the cove, it is self-propelled or towed to the vicinity of the installation position of the weir pillar.
A wire attached between the sending winch and the pulling back winch and the box body is used to adjust the posture of the box body, and a part of the dam column is provided through an opening provided in the box body. A float pontoon for transporting a box body constituting a temporary cut-off body, characterized in that the box body is installed on the dam pillar while being housed inside the box body.

Images