JP2010065399A - Method of constructing water cut-off working space and water cut-off working box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of constructing a water cut-off working space capable of firmly and stably fixing a water cut-off working box without any water leakage even if an object with which a water cut-off member is brought into contact forms a complicated surface and also provide the water cut-off working box. <P>SOLUTION: An elastic water cut-off member 3 having water holding property is attached to the front end of the front surface of a box 2 opened in the front surface and the upper surface, and refrigerant pipes 5a, 5b, 5c are disposed in the water cut-off member 3. When the box 2 is installed at a predetermined position, a communication hole 6 which is formed in the box 2 and allows the inside and the outside of the box 2 to communicate with each other is opened to flow water W1 into the box 2, and the box 2 is fixed to a wall-like body 12 by means of an upper fixing means 7 and a lower fixing means 8, a refrigerant C is made to flow in the refrigerant pipes 5a, 5b, 5c, and the box 2 is fixed to the predetermined position by freezing the water cut-off member 3 deformed along the surface shape of the wall-like body 12 by the contact of the refrigerant pipes on the wall-like body 12, and the water W1 in the box 2 is discharged to the outside by closing the communication hole 6. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for constructing a water stop working space and a water stop work box, and more particularly, even if a wall-like body at a waterfront or a pile-like body or structure standing in water has a complicated surface shape, It is related with the construction method of the water stop work space which can fix a water stop work box firmly and stably, and the water stop work box.

  Investigate the degree of corrosion and repair work if corrosion has progressed on the wall-like bodies such as sheet piles that make up seawalls, rivers, etc. Need to do. Conventionally, when performing such investigations and repair work, for example, in the case of a wall-like body at the waterside, a box with an opening on the front and top surfaces is made of elastic material such as rubber provided at the front end of the front of the box. The water-stopping material is placed at a predetermined position by abutting against a wall-like body at the edge of the water, and then the water inside the box is discharged outside to form a work space inside the box.

  At this time, it is important that the water-stopping material is pressure-bonded to the wall-shaped body of various surface shapes, so that there is no gap between the wall-shaped body and the box so that water leakage does not occur in the formed work space. is there. Accordingly, a tubular elastic body is adopted as the water-stopping material, and compressed air is supplied to the inside of the tubular elastic body. Has been proposed (see Patent Document 1).

  However, in this proposed water stop work box, the tubular elastic body filled with compressed air is brought into close contact with the surface shape of the wall-like body by its elastic deformation, so it cannot be greatly deformed, and the shape deformation is complicated. It was difficult to adhere to the surface-shaped wall-like body.

In addition, after the tubular elastic body is brought into close contact with the wall-like body, the inside of the box is in a closed state with water trapped, and during the period until the water-stopping work box is fixed to the wall-like body, tides and the like When the water surface rises, an additional buoyancy is generated in the water stop work box, and when the water surface is lowered, the buoyancy is reduced and additional force is generated downward by the water confined inside the box. As described above, due to the fluctuation of the water surface position outside the water stop work box, an additional force is generated in the water stop work box in the vertical direction. Furthermore, there is a problem that it is difficult to fix the water stop work box firmly and stably because an external force acts on the box due to the difference between the water surface position (water pressure difference) inside and outside the box. The above-described problem applies not only to the wall-like body at the water's edge but also to the pile-like body or structure standing in the water.
Japanese Utility Model Publication 2-93330

  The object of the present invention is to provide a stable and stable water-stopping work box without causing water leakage even if the wall-like body at the shore or the pile-like body or structure standing in the water has a complicated surface shape. The object is to provide a construction method of a water stop working space that can be fixed and a water stop work box.

In order to achieve the above object, the construction method of the water stop working space of the present invention includes a box having an open front surface and an upper surface, and an elastic water stop provided at the front end of the front surface of the box. The water stop working space is constructed in such a manner that the water is placed in a predetermined position by being brought into contact with the water and then the water inside the box is discharged to the outside to build a work space inside the box. Has water retention and has a structure in which refrigerant piping is arranged inside the water-stopping material, and when this box is installed at a predetermined position, the inside and outside of the box provided in the box can communicate with each other The wall is fixed to the wall with fixing means while the communication port is opened and water is allowed to flow into the box. Freezing the water-stopping material deformed along the surface shape of the wall-shaped body by contacting the After fixing in place, in the state of closing the communication port, and is characterized in that discharging the water in the box-body portion to the outside.

  According to another construction method of the water stop working space of the present invention, a pile-like body standing in water is passed through a through-hole on a bottom surface of a bottomed box having an upper surface opened, and an outer periphery of the pile-like body is formed. A method for constructing a water stop working space in which the box is installed at a predetermined position so as to surround, and then the water inside the box is discharged to the outside to build a work space inside the box. A plurality of box divisions are formed so as to divide the bottom surface of each of the box divisions, and a water stop material is attached to a position corresponding to the through hole of each box division body. A structure in which refrigerant piping is provided, each box body is assembled to form the box, and the pile-shaped body is in contact with the pile-shaped body penetrating the through hole. When the box is installed at a predetermined position so as to surround the outer periphery of the body, the inside and outside of the box provided in the box divided body While fixing the box to the pile-like body with a fixing means while opening the communication port capable of communicating with the inside of the box, the refrigerant is circulated through the refrigerant pipe, After freezing the water-stopping material deformed along the surface shape of the pile-shaped body by contacting the pile-shaped body and fixing the box in a predetermined position, the communication port is closed and the inside of the box-shaped body is closed. The water is discharged outside.

  Further, another construction method of the water stop working space according to the present invention is such that a cylindrical box having an upper surface and a lower surface is opened, and a structure standing in water is passed through the lower end surface of the box. The water stop work which installs in the predetermined position by making the elastic water stop material provided in contact with the opposite surface, and then discharges the water inside this box to the outside and builds the work space inside the box A method for constructing a space, wherein a plurality of box bodies are formed so as to divide the cylindrical box in a circumferential direction, and a water stop material is provided at a position corresponding to the lower end surface portion of each box body. In addition to having a water retaining property, the water-stopping material has a structure in which refrigerant piping is disposed inside the water-stopping material, and assembling the respective box-like divided bodies to form the cylindrical box, In a state where the structure is passed through the box and the water blocking material is in contact with the opposite surface, the box is When installing at a fixed position, open the communication port that allows the inside and outside of the box provided in the box divided body to communicate with each other while allowing water to flow into the box. The box is fixed by a fixing means, and the coolant is circulated through the refrigerant pipe and brought into contact with the opposing surface, thereby freezing the water stop material deformed along the surface shape of the opposing surface. After the box is fixed at a predetermined position, the communication port is closed and water inside the box is discharged to the outside.

  The water stop work box of the present invention is a water stop work box provided with a box having an open front surface and an upper surface, and an elastic water stop material provided at the front end of the front surface of the box. The material has water retention, and a refrigerant pipe is provided inside the water-stopping material. The box is provided with a communication opening for opening and closing the inside and outside of the box so that the water-stopping material A fixing means for fixing the box to the wall-like body at the border of water is provided.

  Another water-stopping work box of the present invention is a water-stopping work box provided with a bottomed box having a through-hole on the bottom surface and an open top surface, and an elastic water-stopping material provided in the through-hole. The box is composed of a plurality of box division bodies formed so as to divide the bottom surface, and the water-stopping material has water retention, and the water-stopping material passes through the box division bodies. At least one communication port that opens and closes the inside and outside of the box can be connected to at least one box body, and is attached to a position corresponding to the hole and a refrigerant pipe is provided inside the water blocking material. And a fixing means for fixing the box to a pile-like body standing in the water through which the water-stopping material abuts through the through-hole.

  Another water stop work box of the present invention is a water stop work box provided with a cylindrical box having an upper surface and a lower surface opened, and an elastic water stop material provided on a lower end surface portion of the box. The cylindrical box is composed of a plurality of box divisions formed so as to be divided in the circumferential direction, and the water-stopping material has water retention properties. A communication port that is attached to a position corresponding to the lower end surface portion of the water stop material, and that is provided with a refrigerant pipe inside the water stop material, and that opens and closes at least one box body to allow the inside and outside of the box to communicate with each other. At least one is provided, and fixing means for fixing the box to a structure that stands up in the water through the box is provided.

  According to the present invention, an elastic water-stopping material provided in a box constituting the water-stopping work box is placed at a predetermined position by bringing it into contact with an opposing object such as a wall-like body at the water's edge. In constructing the work space inside the box by discharging the water inside the box to the outside, the water-stopping material has water retention, and the refrigerant pipe is arranged inside the water-stopping material. When installing the box in a predetermined position, open the communication port that allows the inside and outside of the box to communicate with each other so that water flows into the box. Since the water surface and the outside are at the same water surface position, unnecessary force is not generated in the box due to the fluctuation of the water surface position outside the box.

  In addition, by circulating the refrigerant through the refrigerant pipe and freezing the water stop material deformed along the surface shape of the target object by contacting the target object, the target object has a complicated surface shape. However, the box can be installed so that there is no gap that causes water leakage to the object.

  Therefore, in addition to the fixing means for the object, the box can be firmly and stably fixed to the object by the frozen water stop material.

  And after fixing a box to a predetermined position, a work space can be ensured inside a box by making the state which closed the communicating port, and discharging the water inside a box outside.

  Hereinafter, the construction method and the water stop work box of the water stop work space of the present invention will be described based on the embodiments.

  As illustrated in FIGS. 1 to 4, the first embodiment of the water stop working box 1 according to the present invention has water retention at the front face and the front end of the front face of the box 2. And an elastic water stop material 3. In this embodiment, the front end portion of the front surface of the box 2 is made of H steel, and the left and right side surfaces, the rear surface, and the bottom surface of the box 2 are made of a rigid material such as a steel plate. The material and members of the box 2 are not limited to this.

  A communication port 6 that opens and closes the inside and outside of the box 2 is provided on the bottom surface of the box 2. The communication port 6 is not limited to the bottom surface, but can be provided at other locations, but it is preferable to provide the communication port 6 at a position below the box 2 as much as possible. The communication port 6 is not limited to one, and a plurality of communication ports 6 may be provided.

  The water blocking material 3 is attached so as to cover the front end portion of the front surface of the box 2. Examples of the water stop material 3 include a resin material, a rubber material, a metal fiber formed in a sponge shape, or a combination thereof. As the sponge shape, any of an open cell structure, a closed cell structure, and a mixed structure of open cells and closed cells can be adopted. An open cell structure is preferred to ensure a large deformation.

  Inside the water stop material 3, refrigerant pipes 5 (5a, 5b, 5c) are arranged. In this embodiment, three refrigerant pipes 5 are provided, but the number thereof is not particularly limited, and may be one or more. For example, the coolant pipe 5 is disposed at a predetermined position so that the water-stopping material 3 is cut into the outer shape of the coolant pipe 5 and embedded in the cut portion.

  The refrigerant pipe 5 is connected to a refrigerant supply means 10 installed on the wall 12. The refrigerant pipe 5 is preferably made of a material that is durable against cold and has excellent heat transfer efficiency. The material of the refrigerant pipe 5 is, for example, stainless steel or copper when liquid nitrogen is used as the refrigerant C, and iron or the like when brine (high concentration calcium chloride aqueous solution) is used as the refrigerant C.

  The box 2 is provided with an upper fixing means 7 for fixing the upper part of the box 2 and a lower fixing means 8 for fixing the lower part of the box 2. In this embodiment, an L-shaped rigid angle member is used as the upper fixing means 7, and the upper portion of the box 2 is fixed to the upper surface of the wall-like body 12. The lower fixing means 8 includes an anchor bolt 8 a protruding from the surface of the underwater wall 12, and a wire 8 b extending between the anchor bolt 8 a and the lower portion of the box 2. . The upper fixing means 7 and the lower fixing means 8 are not limited to this, and other structures (members) can be used.

  In addition, if the box 2 can be stably fixed to the wall-like body 12, not only the two types of fixing means, the upper fixing means 7 and the lower fixing means 8, but only one type of fixing means can be used. For example, only the upper fixing means 7 can be used.

  In this embodiment, the water supply means 11 for supplying the water W to the upper part of the water blocking material 3 is further provided.

Hereinafter, the procedure of the construction method of the water stop working space of this invention using this water stop work box 1 is demonstrated.
First, as illustrated in FIG. 6, the front surface of the water stop work box 1 is made to face the surface of the wall-like body 12 at the edge of a steel sheet pile or the like. At this time, the communication port 6 is kept open, and the refrigerant C is not allowed to flow through the refrigerant pipe 5.

  Then, the front surface of the box 2 is moved toward the surface of the wall-shaped body 12, and the water-stopping material 3 is brought into contact with the surface of the wall-shaped body 12, so that the wall-shaped body 12 is Deform along the surface shape. Since the elastic water-stopping material 3 having water retention property according to the present invention is excellent in deformation performance, even if it is not formed in advance so as to follow the surface shape of the wall-like body 12, it will follow the surface shape without gaps. Can be transformed into Thus, as illustrated in FIG. 1, the outside water W <b> 1 enters and exits freely inside the box 2 through the communication port 6.

  In addition, in order to improve the adhesiveness with the surface of the wall-shaped body 12, the water stop material 3 can also be previously formed in the shape which follows the surface shape of the wall-shaped body 12 roughly.

  Next, the upper portion of the box 2 is fixed to the wall-like body 12 by the upper fixing means 7, and the lower portion of the box 2 is fixed to the wall-like body 12 by the lower fixing means 8, and liquid nitrogen or A brine of about minus 25 ° C. is circulated. The water retained in the water-stopping material 3 is frozen by the cold heat of the refrigerant C flowing through the refrigerant pipe 5, and the water-stopping material 3 is frozen in a deformed state along the surface shape of the wall-like body 12.

  In this way, in addition to the fixing by the upper fixing means 7 and the lower fixing means 8, the water blocking material 3 maintains the deformed shape and solidifies, and the box 2 is fixed to the wall-like body 12 by the freezing force due to freezing. On the other hand, it is firmly fixed at a predetermined position. If a large freezing force can be secured, the upper fixing means 7 and the lower fixing means 8 can be reduced in size.

  Furthermore, when the box 2 is installed at a predetermined position, the communication port 6 is opened so that the water W1 flows into the box 2, so that the inside of the box 2 and the outside are always at the same water surface position. Become. Therefore, even if the water surface rises due to tides or the like until the box 2 (water-stopping work box 1) is fixed at a predetermined position of the wall-like body 12, the box 2 (water-stopping work box 1) Does not cause additional buoyancy. Further, even if the buoyancy is reduced by lowering the water surface, no additional force is generated downward by the water W1 existing inside the box 2. Further, the external force due to the difference in water surface position between the inside and outside of the box 2 (water pressure difference) does not act on the box 2.

  In this way, due to fluctuations in the water surface position outside the box 2 (water stop work box 1), additional force and water pressure difference that are unnecessary in the vertical direction on the box 2 (water stop box 1). The resulting external force does not occur. Thereby, the box 2 (water-stopping work box 1) can be firmly and stably fixed to the wall-like body 12.

  Further, after the flexible water-stopping material 3 before freezing is deformed along the surface shape of the abutted wall-like body 12, the refrigerant C is circulated through the refrigerant pipe 5 to freeze the water-stopping material 3. Therefore, even if the wall-shaped body 12 has a complicated surface shape, the box 2 can be installed so that there is no gap that causes water leakage.

  Furthermore, when the water-stopping material 3 has a specification excellent in water permeability such as an open-cell structure, if there is a difference in the water surface position between the inside and the outside of the box 2, the water W1 is stopped. Pass through 3 and enter and exit the box 2. Thus, in the state where the water W1 passes through the water stop material 3, the water stop material 3 is hardly frozen even if the refrigerant C is circulated through the refrigerant pipe 5, but in this embodiment, such a problem can be avoided. The water blocking material 3 can be quickly frozen to fix the box 2 at a predetermined position.

  Next, a water stop working space can be constructed inside the box 2 by discharging the water W1 inside the box 2 to the outside of the box 2 by a pump or the like with the communication port 6 closed.

  As illustrated in FIG. 4, the waterstop material 3 is not only provided alone at the front end of the front surface of the box 2, but at least a part thereof can be covered with the heat insulating material 4 as illustrated in FIG. 5. . By covering the water stop material 3 with the heat insulating material 4, it is possible to suppress the loss of cold heat due to the refrigerant C and to promote freezing of the water stop material 3. The region covered with the heat insulating material 4 is mainly a surface (side surface, back surface) other than the front surface of the water blocking material 3.

  Further, when the box 2 and the refrigerant pipe 5 are connected and fixed via the connecting member, the heat insulating structure or the heat insulating material is formed so that the cold heat of the refrigerant pipe 5 does not escape through the connecting member. It is preferable to use a connecting member.

  When the refrigerant C flows through the refrigerant pipe 5, the temperature gradually increases, and due to this, the freezing condition varies depending on the position of the water stop material 3. Therefore, in order to prevent this, as illustrated in FIG. 8, the refrigerant C can be circulated in a plurality of refrigerant pipes 5 a, 5 b, 5 c with the circulation direction being opposite.

  In the example of FIG. 8, on-off valves 10a, 10b, and 10c connected to an open pipe 10d are arranged at the tip ends of the respective refrigerant pipes 5a, 5b, and 5c, and the refrigerant C (liquid nitrogen supplied by the refrigerant supply means 10 is provided. ) Is opened to the atmosphere through the open pipe 10d through the on-off valves 10a, 10b, and 10c. When brine is used as the refrigerant C, for example, the open pipe 10d is connected to the refrigerant supply means 10 so that the brine can be circulated.

  In order to prevent variation in the degree of freezing caused by the flow direction of the refrigerant C, a method of changing the flow direction of the refrigerant C in the refrigerant pipe 5 in the opposite direction at a predetermined time can be used as illustrated in FIG.

  In the example of FIG. 9, a switching valve 9 such as a three-way valve is arranged in the refrigerant pipe 5 extending from the refrigerant supply means 10, and the refrigerant pipes 5 a, 5 b, 5 c are connected to the refrigerant pipe 5 branched from the switching valve 9 to the left and right. To do. In the refrigerant pipe 5a, switching valves 9a and 9d connected to an open pipe 10d are arranged on the left and right positions with the switching valve 9 in between. In the refrigerant pipe 5b, switching valves 9b and 9e connected to an open pipe 10d are arranged on the left and right positions with the switching valve 9 in between. In the refrigerant pipe 5c, switching valves 9c and 9f connected to an open pipe 10d are arranged at the left and right positions with the switching valve 9 in between.

  Here, for example, the switching valve 9 is operated so that the refrigerant C (liquid nitrogen) supplied from the refrigerant supply device 10 is circulated only to the left side, and the refrigerant C is circulated counterclockwise. It opens to the atmosphere through an open pipe 10d through switching valves 9d, 9e and 9f of 5a, 5b and 5c. After the refrigerant C is circulated for a predetermined time in this state, the switching valve 9 is operated so that the refrigerant C (liquid nitrogen) supplied from the refrigerant supply device 10 is circulated only to the right side, It is made to circulate around and is opened to the atmosphere through the open pipe 10d through the switching valves 9a, 9b, 9c of the respective refrigerant pipes 5a, 5b, 5c.

  In this manner, the switching valve 9 can be operated to change the flow direction of the refrigerant C in the refrigerant pipe 5 sequentially in the opposite direction in a predetermined time.

  When brine is used as the refrigerant C, for example, the open pipe 10d is connected to the refrigerant supply means 10 so that the brine can be circulated.

  Moreover, the water retention amount differs between the water stop material 3 in water and the water stop material 3 on the water. Due to this, the degree of freezing varies depending on the position of the water stop material 3. Therefore, in order to prevent this, as exemplified in the embodiment, it is possible to provide a water supply means 11 for supplying water to the upper portion of the water blocking material 3. In this configuration, when the box 2 is installed at a predetermined position on the wall-like body 12, the installation work is performed while supplying water W from the water supply means 11 to the upper part of the water blocking material 3.

  In order to prevent variation in the degree of freezing caused by the difference in the water retention amount, the water retention of the water stop material 3 is varied in the vertical direction, and the water stop material 3 disposed above is compared with the water stop material 3 disposed below. And high water retention specifications.

  Specifically, the water stop material 3 disposed on the water has water retention superior to the water stop material 3 disposed in water. In order to make the water retention different, for example, the material of the water blocking material 3 and the sponge structure are made different.

  Moreover, in order to eliminate the variation in the freezing condition due to the difference in the water retention amount at the upper and lower positions of the water-stopping material 3, the water-stopping material 3 arranged above has an adverse effect on the deformation performance with respect to the surface shape of the wall-like body 12. It is also possible to perform the installation work in a state of being frozen in advance on land or the like to the extent that no occurrence occurs.

  After the water stop work box 1 is installed, the refrigerant C is circulated through the refrigerant pipe 5 in order to maintain the freezing of the water stop material 3, but in the first stage (when the water stop material 3 is frozen), the refrigerant After circulating liquid nitrogen or brine as C and freezing the water-stopping material 3, the brine can also be circulated as the refrigerant C. Brine is easier to control temperature than liquid nitrogen, where temperature control is practically impossible. Therefore, brine is used as the refrigerant C after the water stop material 3 is frozen and the water stop work box 1 is installed at a predetermined position. By using, it becomes easy to maintain and manage freezing of the water stop material 3.

  In addition, the layout of the refrigerant | coolant piping 5, the number, the distribution direction of the refrigerant | coolant C, etc. are determined based on the temperature analysis etc. which assumed the spot, for example. Further, in order to maintain and manage the freezing of the water stop material 3, for example, a thermocouple or the like is arranged at a main portion of the water stop material 3 and the temperature of the refrigerant C is controlled while measuring the temperature.

  Thus, if the frozen state of the water stop material 3 is appropriately maintained, the box 2 (water stop work box 1) is firmly and stably fixed even if the water surface position fluctuates up and down. Therefore, there will be no problems such as shifting.

  When the box 2 is installed at a predetermined position on the wall-like body 12 facing the sea, work on the day of the tide of the sea area or several days before and after the day of the tide. It ’s a good idea to start and complete your work when the tide is full. According to this, it is possible to make it difficult to produce a difference in the amount of water retained between the upper and lower positions of the water-stopping material 3, and it is possible to suppress variations in the degree of freezing.

  The second embodiment of the water stop work box 1 illustrated in FIGS. 10 to 13 is used when repairing a pile-like body 13 standing in water such as a pier. The water stop work box 1 includes a bottomed box 2 having an open upper surface. The box 2 has a through hole 2a on the bottom surface, and an elastic water stop material 3 having water retention is attached to the inner peripheral surface of the through hole 2a. This water blocking material 3 has the same specifications as the first embodiment.

  The box 2 is composed of two box divisions 2A and 2B formed so as to divide the bottom surface by dividing the through hole 2a, but the box 2 is constituted by three or more box divisions. You can also The box bodies 2A and 2B are made of steel plates or the like. Each box division body 2A, 2B is formed in the box 2 by assembling with a general sealing material 3a made of rubber or the like interposed between the mating surfaces.

  A communication port 6 that opens and closes the inside and outside of the box 2 is provided at the bottom of one box body 2B. One communication port 6 may be provided in at least one box body 2B, but a plurality of communication ports 6 may be provided. The communication port 6 is not limited to the bottom surface, but can be provided at other locations, but it is preferable to provide the communication port 6 at a position below the box body 2B (box 2) as much as possible.

  Since the box 2 has the above-described divided structure, the water blocking material 3 is attached to a position corresponding to the through hole 2a of each box divided body 2A, 2B. Refrigerant piping 5 (5a, 5b, 5c) is disposed inside the water stop material 3 attached to each box body 2A, 2B. The refrigerant pipe 5 is connected to the refrigerant supply means 10 installed in the superstructure of the pile-like body 13.

  The refrigerant pipe 5 and the refrigerant supply means 10 have the same specifications as those in the first embodiment. Further, the refrigerant C flowing through the refrigerant pipe 5 has the same specification as that of the first embodiment.

  Each box body 2A, 2B is provided with an upper fixing means 7 for fixing the upper parts of the box bodies 2A, 2B (box 2) to the pile-like body 13. In this embodiment, a rigid angle member fixed to the upper part of the box bodies 2A and 2B (box 2) and the upper work of the pile-like body 13 is used as the upper fixing means 7.

  Instead of the upper fixing means 7 or in addition to the upper fixing means 7, lower fixing means for fixing the lower parts of the box bodies 2A and 2B (box 2) to the pile-like body 13 may be provided. As the upper fixing means 7 and the lower fixing means, those having the same specifications as those of the first embodiment can be used.

  A procedure for constructing a water stop working space using the water stop work box 1 will be exemplified below.

  First, a floating body is attached to each box body divided body 2 </ b> A, 2 </ b> B, moved on the water as illustrated in FIG. 11, and the waterstop 3 is brought into contact with the surface of the pile-shaped body 13. At this time, the communication port 6 is kept open so that the refrigerant C does not flow through the refrigerant pipe 5. A seal member 3a is interposed between the mating surfaces of the box bodies 2A and 2B, and the boxes 2 are formed by assembling each other through bolts to the flange portions of the box bodies 2A and 2B.

  Thereby, the box 2 will be in the state which enclosed the outer periphery of the pile-shaped body 13 which penetrates the through-hole 2a so that it may illustrate in FIG. In addition, although the part of the refrigerant | coolant piping 5 which protrudes from the water-stopping material 3 can also be connected to the refrigerant | coolant piping 5 embed | buried under the inside of the water-stopping material 3 previously, the box division bodies 2A and 2B were assembled | attached. Later, it can be connected to the refrigerant pipe 5 inside the water blocking material 3.

  The water blocking material 3 is deformed so as to follow the surface shape of the pile-like body 13 and closely adheres to the outer peripheral surface of the pile-like body 13. Inside the box 2, the outside water W1 enters and exits freely.

  Next, the upper portion of the box 2 is fixed to the pile-like body 13 by the upper fixing means 7 and the refrigerant C is circulated through the refrigerant pipe 5. Thereby, the water stop material 3 freezes in the state which deform | transformed along the surface shape of the pile-shaped body 13. FIG.

  In this way, the box 2 is firmly fixed at a predetermined position with respect to the pile-like body 13 by the freezing force of the upper fixing means 7 and the water blocking material 3. Further, since the communication port 6 is opened and the water W1 is allowed to flow into the box 2, the box 2 is caused by fluctuations in the water surface position outside the box 2 as in the first embodiment. Therefore, no additional force or an external force due to a water pressure difference is generated in the vertical direction. Therefore, the box 2 can be firmly and stably fixed to the pile-like body 13.

  Moreover, even if the surface of the pile-shaped body 13 is a complicated shape similarly to 1st Embodiment, it can install the box 2 in a predetermined position so that there may be no gap which causes water leakage with the water stop material 3. it can. Even when the water-stopping material 3 has a specification excellent in water permeability such as an open cell structure, the water-stopping material 3 does not become difficult to freeze as in the first embodiment.

  Next, a water stop working space can be constructed inside the box 2 by discharging the water W1 inside the box 2 to the outside of the box 2 with the communication port 6 closed.

  In the water stopping work box 1 of the second embodiment, the outer periphery of one pile-like body 13 is surrounded by one box 2, but a plurality of pieces are provided as in the third embodiment illustrated in FIG. 14. It can also be set as the water stop work box 1 made into the structure which surrounds the outer periphery of the pile-shaped bodies 13a, 13b, 13c with the one box 2.

  This box 2 has a plurality of through-holes 2a (three through-holes 2a in this embodiment) that allow the pile-like bodies 13a, 13b, and 13c to pass through on the bottom surface of the bottomed box 2 having an open top surface. Each of the through holes 2a is divided into two box divided bodies 2A and 2B formed so as to divide the bottom surface of the box 2.

  A water stop material 3 provided with a refrigerant pipe 5 is attached to a position corresponding to the through hole 2a of each box body 2A, 2B, and the refrigerant pipe 5 is connected to the refrigerant supply means 10. Further, at least one communication opening 6 that opens and closes the inside and outside of the box 2 can be provided in the at least one box body 2B, and the water blocking material 3 penetrates the through hole 2a. Fixing means 7 for fixing the box 2 to the pile-like bodies 13a, 13b, and 13c that come into contact with each other is provided. The box body 2 is formed by assembling each box body 2A, 2B with the sealing material 3a interposed between the mating surfaces.

  Other specifications are the same as those of the second embodiment, and the procedure for constructing the water stop working space is the same as that of the second embodiment.

  According to this embodiment, the same effect as that of the second embodiment can be obtained. However, when the plurality of pile-like bodies 13a to 13c are erected at positions close to each other or in a complicated manner, Even if it is provided, there is an advantage that a water stop working space can be constructed with one box 2.

  The fourth embodiment of the water stop work box 1 illustrated in FIGS. 15 to 17 is used when repairing a structure such as a bridge substructure 14 standing in water. The bridge substructure 14 has a shape in which the column portion 14a protrudes upward from a planar footing 14b installed on the ground.

  The water stop work box 1 includes a cylindrical box 2 having an upper surface and a lower surface opened. An elastic water stop material 3 having water retention is attached to the lower end surface portion (the inner peripheral side of the lower end surface and the lower end surface) of the box 2. Specifically, in the rectangular box 2 in plan view, a water stop material 3 is attached to the inner peripheral side of the lower end surface of the long side and the lower end surface of the short side. This water blocking material 3 has the same specifications as the first embodiment.

  The box 2 is constituted by two box division bodies 2A and 2B formed so as to divide the cylindrical shape in the circumferential direction, and the box 2 is constituted by three or more box division bodies. You can also. The box bodies 2A and 2B are formed in the cylindrical box 2 by passing bolts through the respective flange portions and assembling them with the sealing material 3a interposed between the mating surfaces. The lower end surface part of the box body 2A, 2B (box 2) is formed in accordance with the shape of the bridge substructure 14 to be installed. The water stop material 3 is attached to the lower end surface portion thereof.

  A communication port 6 that opens and closes the inside and outside of the box 2 is provided on the side surface of one box body 2B. One communication port 6 may be provided in at least one box body 2B, but a plurality of communication ports 6 may be provided. It is preferable to provide the communication port 6 at a position below the box body 2B (box 2) as much as possible.

  The water stop material 3 is attached to a position corresponding to the lower end surface portion of each box body 2A, 2B, and refrigerant pipes 5 (5a, 5b, 5c) are disposed inside each water stop material 3. ing. The refrigerant pipe 5 is connected to the refrigerant supply means 10 installed in the upper work of the bridge lower work 14.

  The refrigerant pipe 5 and the refrigerant supply means 10 have the same specifications as those in the first embodiment. Further, the refrigerant C flowing through the refrigerant pipe 5 has the same specification as that of the first embodiment.

  Each box body 2A, 2B is provided with fixing means for fixing the box bodies 2A, 2B (box 2) to the bridge substructure 14. In this embodiment, a rigid angle member fixed to anchor divisions 2A and 2B (box 2) and a footing 14b of the bridge undercarriage 14 by anchor bolts or the like as fixing means (upper fixing means 7 and lower fixing means 8). Is used.

  A procedure for constructing a water stop working space using the water stop work box 1 will be exemplified below.

  First, a floating body is attached to each box body divided body 2A, 2B, and as illustrated in FIG. 17, the water stop material 3 is moved to the predetermined position surrounding the outer periphery of the column portion 14a of the bridge substructure 14 by water. It is placed in contact with the opposing footing 14b.

  At this time, the communication port 6 is kept open, and the refrigerant C is kept from flowing through the refrigerant pipe 5. The cylindrical box 2 is formed by interposing the sealing material 3a between the mating surfaces of the box divisions 2A and 2B and assembling each other through bolts to the flange portions of the box divisions 2A and 2B. . Thereby, the box 2 is in a state in which the bridge substructure 14 is penetrated, as illustrated in FIGS. 15 and 16.

  In addition, although the part of the refrigerant | coolant piping 5 which protrudes from the water-stopping material 3 can also be connected to the refrigerant | coolant piping 5 embed | buried under the inside of the water-stopping material 3 previously, the box division bodies 2A and 2B were assembled | attached. Later, it can be connected to the refrigerant pipe 5 inside the water blocking material 3.

  The water-stopping material 3 is deformed so as to follow the surface shape of the footing 14b, and the water-stopping material 3 adheres closely to the surface of the footing 14b. Inside the box 2, the outside water W1 enters and exits freely.

  Next, the box 2 is fixed to the bridge substructure 14 by the fixing means 7 (8), and the refrigerant C is circulated through the refrigerant pipe 5. Thereby, the water stop material 3 freezes in the state which deform | transformed along the surface shape of the footing 14b. In this way, the box 2 is firmly fixed at a predetermined position with respect to the bridge substructure 14 by the freezing force of the fixing means 7 (8) and the water stop material 3. Moreover, even if the surface of the footing 14b is a complicated shape similarly to 1st Embodiment, the box 2 can be installed in a predetermined position with the water stop material 3 so that there may be no gap which causes water leakage.

  Moreover, since the communication port 6 is opened and the water W1 is allowed to flow into the box 2, the water surface positions inside and outside the box 2 are always at the same level. Therefore, the external force resulting from the water pressure difference does not act on the box 2 as in the first embodiment. In addition, even when the water-stopping material 3 has a specification excellent in water permeability such as an open cell structure, the water-stopping material 3 does not become difficult to freeze.

  After the box 2 is fixed at a predetermined position, the communication port 6 is closed, and the water W1 inside the box 2 is discharged outside the box 2, so that the water stop working space is placed inside the box 2. Can be built.

  In this embodiment, the water-stopping material 3 is brought into contact with the upper surface and the side surface of the footing 14b. Accordingly, the lower end surface and the lower side of the box bodies 2A and 2B (box 2) corresponding to this. The water stop material 3 is provided on the inner peripheral side of the end face. Therefore, when installing the box 2 so as to be completely placed on the footing 14a, the water stop material 3 may be provided only on the lower end surfaces of the box division bodies 2A and 2B (box 2). .

  The various specifications described in the first embodiment can also be applied to the second to fourth embodiments.

It is a side view which illustrates the water stop work box of the present invention which opened a communicating port and made water flow in into a box. It is AA sectional drawing of FIG. It is a front view of FIG. FIG. 3 is a partially enlarged cross-sectional view illustrating the water stop material of FIG. 2. It is sectional drawing which shows the modification of the water stop material of FIG. It is sectional drawing which illustrates the state which is moving the box toward the surface of a wall-shaped body (AA cross-section equivalent figure of FIG. 1). It is a side view which illustrates the water stop work box which closed the communicating port and discharged the water inside a box outside. It is explanatory drawing which illustrates refrigerant | coolant piping. It is explanatory drawing which illustrates another refrigerant | coolant piping. It is a top view which illustrates another embodiment of a water stop work box. It is explanatory drawing which illustrates the process of assembling the box division bodies of FIG. It is BB sectional drawing of FIG. FIG. 11 is a partially enlarged view of FIG. 10. It is a perspective view which illustrates another embodiment of a water stop work box. It is a top view which illustrates another embodiment of a water stop work box. It is CC sectional drawing of FIG. It is explanatory drawing which illustrates the process of installing the box division body of FIG. 15 in a predetermined position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water stop work box 2 Box 2a Through-hole 2A, 2B Box division body 3 Water stop material 3a Seal material 4 Thermal insulation material 5, 5a, 5b, 5c Refrigerant piping 6 Communication port 7 Upper fixing means 8 Lower fixing means 8a Anchor Bolt 8b Wire 9, 9a, 9b, 9c, 9d, 9e, 9f Switching valve (switching means)
DESCRIPTION OF SYMBOLS 10 Refrigerant supply means 10a, 10b, 10c On-off valve 10d Open pipe 11 Moisture supply means 12 Wall-like body 13, 13a, 13b, 13c Pile-like body 14 Bridge undercarriage 14a Column 14b Footing C Refrigerant

Claims (13)

  A box with an opening on the front and top surfaces is placed in place by bringing an elastic water-stopping material provided at the front end of the front of the box into contact with the wall at the waterfront. This is a construction method of a still water working space in which the working water is discharged to the outside and the working space is built inside the box, wherein the water stopping material has water retention and refrigerant piping is arranged inside the water stopping material. When installing this box in a predetermined position, open the communication port that allows communication between the inside and outside of the box provided in the box and let water flow into the box. The waterstop is deformed along the surface shape of the wall-like body by fixing the box to the wall-like body with a fixing means, and circulating the refrigerant through the refrigerant pipe and coming into contact with the wall-like body. After freezing the material and fixing the box in place, the communication port is closed and this Construction method of water shut-off working space, characterized in that discharging the water in the body portion to the outside.   The water-holding property of the water-stopping material is made different in the vertical direction, and the water-proofing specification is higher in the upper part than in the lower part, or when the box is installed at a predetermined position, water is supplied to the upper part of the water-stopping material. The construction method of the water stop working space according to claim 1, wherein the installation work is performed while the work is being performed.   A pile-shaped body standing in the water is passed through the bottom hole of the bottomed box with the top open, and this box is installed at a predetermined position so as to surround the outer periphery of the pile-shaped body. A water stop working space construction method for constructing a work space inside the box by discharging water inside the box to the outside, wherein a plurality of box pieces are divided so as to divide the bottom surface of the box. The water-stopping material is attached to a position corresponding to the through hole of each box body, and the water-stopping material has a water retaining property and has a structure in which a refrigerant pipe is provided. Assemble the body to form the box, and place the box at a predetermined position so as to surround the outer periphery of the pile-shaped body in a state where the water blocking material is in contact with the pile-shaped body penetrated through the through hole When opening, open the communication port that allows the inside and outside of the box provided in the box body to communicate with the inside of the box. The surface shape of the pile-shaped body is fixed by fixing the box to the pile-shaped body with a fixing means while flowing the refrigerant through the refrigerant pipe and contacting the pile-shaped body. The water-stopping material deformed along the line is frozen, the box is fixed at a predetermined position, the communication port is closed, and the water inside the box is discharged to the outside. How to build a workspace.   With a cylindrical box having an upper surface and a lower surface opened, a structure standing in water is penetrated, and an elastic water stop material provided on the lower end surface of the box is brought into contact with the opposing surface. The water stop working space is constructed by discharging the water inside the box to the outside and building the work space inside the box, and surrounding the cylindrical box. A plurality of box division bodies are formed so as to be divided in the direction, and a water stop material is attached to a position corresponding to the lower end surface portion of each box division body. A structure in which refrigerant pipes are arranged inside the water material, and the respective box division bodies are assembled to form the cylindrical box body, and the water blocking material is opposed to the box through the structure. When the box is installed at a predetermined position in contact with the surface to be The box is fixed to the structure by a fixing means while a communication port that allows communication between the inside and outside of the box is opened and water is allowed to flow into the box. The water stop material deformed along the surface shape of the facing surface is frozen to fix the box in a predetermined position, and then the communication port is closed. The construction method of the water stop working space characterized by draining the water inside this box outside to the state.   The construction method of the water stop working space in any one of Claims 1-4 which made it cover at least one part of the said water stop material with a heat insulating material.   The water stop operation according to any one of claims 1 to 5, wherein the flow direction of the refrigerant in the refrigerant pipe is changed in the opposite direction at a predetermined time, or the refrigerant is circulated in the plurality of refrigerant pipes with the flow direction set in the opposite direction. How to build a space.   The construction method of the water stop working space according to any one of claims 1 to 6, wherein liquid nitrogen or brine is first circulated as a refrigerant and brine is circulated as a refrigerant after the water stop material is frozen.   A water stop working box provided with a box having an opening on the front surface and an upper surface, and an elastic water stop material provided at the front end of the front surface of the box, wherein the water stop material has water retention, Refrigerant piping is provided inside the water-stopping material, and the box is provided with a communication opening that opens and closes so that the inside and outside of the box can communicate with each other. A water stop working box provided with fixing means for fixing the box.   9. The water-retaining property of the water-stopping material is varied in the vertical direction, and the water-retaining property is higher in the upper part than in the lower part, or a water supply means for supplying water to the upper part of the water-stopping material is provided. Water stop work box.   A water stop work box having a bottomed box having a through hole on the bottom surface and having an open top surface, and an elastic water blocking material provided in the through hole, and the bottom surface of the box is divided. The water-stopping material has a water retention property, and the water-stopping material is attached to a position corresponding to the through hole of each box-partitioning body. Refrigerant piping is provided inside the water material, and at least one box body is provided with at least one communication opening that opens and closes to allow communication between the inside and outside of the box, and passes through the through hole. A water-stopping work box comprising a fixing means for fixing the box to a pile-like body standing in water in contact with the water-stopping material.   A water stop working box having a cylindrical box having an upper surface and a lower surface opened and an elastic water blocking material provided on a lower end surface of the box, and the cylindrical box is divided in a circumferential direction. It is composed of a plurality of box division bodies formed so that the water stop material has water retention, and the water stop material is attached to a position corresponding to the lower end surface portion of each box division body, and this Refrigerant piping is arranged inside the water stop material, at least one box body is provided with at least one communication opening that opens and closes to allow communication between the inside and outside of the box, and passes through the box. A water stop working box characterized in that a fixing means for fixing the box to a structure standing in water is provided.   The water stop work box according to any one of claims 8 to 11, wherein a heat insulating material covering at least a part of the water stop material is provided.   A switching means for changing the flow direction of the refrigerant in the refrigerant pipe to the opposite direction at a predetermined time is provided, or a plurality of refrigerant pipes are provided, and the refrigerant is circulated in the refrigerant pipe in the opposite direction. The water stop work box in any one of 8-12.

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