JP2011137371A - Water shielding treatment method for structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water shielding treatment method for a structure, capable of surely performing water shielding treatment between structural members in a short time of period by efficiently filling a gap between the members with a water shielding material such as asphalt mastic which is increased in flowability by heating. <P>SOLUTION: When water shielding treatment is performed to between mutually adjacent structural members 1, 1 by charging the water shielding material 6 such as asphalt mastic which is increased in flowability by heating to between the structural members 1, 1 and filling the gap between the structural members 1, 1 with the water shielding material 6, a bar-like heating rod 10 is disposed in the water shielding material charged between the structural members 1, 1, the water shielding material 6 is closely fitted between the structural members 1, 1 by increasing the flowability of the water shielding material 6 by heating of the heating rod 10, and the heating rod 10 is thereafter pulled out of the water shielding material 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a water impermeable treatment method for a structure that efficiently and accurately insulates between structural members constituting the structure when constructing a structure having a water impermeable structure such as a partition revetment in a landfill.

  Conventionally, structural members such as steel pipe sheet piles are erected side by side in a structure having a water-impervious structure such as a partition revetment in a landfill, and the structural members are connected by male and female joint members that engage with each other. It is known that the joint part is subjected to a water-impervious treatment and at the same time is subjected to a double water-impervious process by filling a water-impervious material between the steel pipe sheet piles on the front side of the joint part. (For example, patent document 1).

  For example, as shown in FIG. 10, the water shielding wall A having such a water shielding structure is provided with partition plate mounting pipes 2 on the front side of adjacent steel pipe sheet piles 1 and 1, respectively. 2 is formed on the front side of the joint portion 4 by a partition member 3 made of channel steel with both side edges supported, and the asphalt mastic is provided in the water shielding material filling portion 5. It is formed by filling a water shielding material 6 made of or the like.

  Further, in order to fill the water-impervious material filling portion 5 with the water-impervious material 6, the water-impervious material 6 is introduced into the upper portion of the water-impervious material filling portion 5 while being heated to a high temperature, and the fluidity causes the bottom portion I try to spread it.

JP 2009-84949 A

  However, in the conventional technology as described above, while the water shielding material such as asphalt mastic is flowing down in the water shielding material filling portion, the fluidity of the water shielding material is lowered by being cooled by the water in the water shielding material filling portion. However, there is a possibility that a portion where the water shielding material does not spread within the water shielding material filling portion and the water shielding performance is impaired.

  Since the fluidity of the water shielding material decreases, especially in the winter when the temperature is low, after the water shielding material is introduced in the winter, it waits for the water shielding material to be filled by consolidation settlement due to the temperature rise in the summer. There was a problem that the construction period was long and the efficiency was poor over a long period of time, and that it was not possible to handle short-term construction.

  In view of such conventional problems, the present invention efficiently fills between structural members with a water shielding material such as asphalt mastic that increases fluidity by heating, and performs a water shielding treatment between the structural members in a short period of time. It was made for the purpose of providing a water shielding method for a structure that can be used.

  The feature of the invention described in claim 1 for solving the conventional problems as described above and achieving the intended object is a water shielding material such as asphalt mastic that increases fluidity by heating between adjacent structural members. In the water shielding treatment method for a structure in which the water shielding treatment is performed between the structural members by filling the water shielding material between the structural members, in the water shielding material introduced between the structural members. A rod-shaped heating rod is disposed on the heating rod, and the water shielding material is increased in fluidity by heating the heating rod, so that the water shielding material is closely packed between the structural members. It is to pull out from the water material.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, after the water shielding material is inserted between the structural members, the heating rod is heated and penetrates into the water shielding material. It is in.

  According to a third aspect of the present invention, in addition to the configuration of the second aspect, the heat rod penetrates into the water shielding material while applying a downward pushing force by pushing means to the heating rod.

  According to a fourth aspect of the present invention, in addition to the structure of the first aspect, the heating rod is disposed between the structural members, and the portion between the structural members is heated by the heating rod, and then, between the structural members. The water shielding material is introduced, and the heating rod is arranged in the introduced water shielding material.

  According to a fifth aspect of the present invention, in addition to the structure of any one of the first to third or fourth aspects, the water shielding material heated by the heating rod is pressed by pressing means.

  According to a sixth aspect of the present invention, in addition to the structure of any one of the first to fourth or fifth aspects, the heating rod includes an outward pipe to which a heating fluid is supplied from a heat supply unit, and an outer side of the outward pipe. And the return pipe arranged concentrically, and the heated fluid passing through the forward pipe is discharged through the return pipe.

  The feature of the invention described in claim 7 is that, in addition to the configuration of claim 6, the heating rod has a heat insulating material disposed between the forward pipe and the backward pipe.

  As described above, the water-impervious treatment method for a structure according to the present invention introduces a water-impervious material such as asphalt mastic that increases fluidity by heating between adjacent structural members, and uses the water-impervious material as the structural member In a method for water shielding treatment of a structure in which a water shielding treatment is performed between the structural members by filling in between, a rod-shaped heating rod is disposed in the water shielding material put between the structural members, and the heating rod By increasing the fluidity of the water shielding material by heating, the water shielding material is closely packed between the structural members, and then the heating rod is pulled out of the water shielding material, thereby efficiently and short-term. In addition, a water shielding material can be accurately filled between the structural members, and the construction can be performed in the winter without waiting for the consolidation settlement due to the temperature rise in the summer.

  Moreover, in this invention, after throwing the said water-impervious material between the said structural members, it penetrates in the said water-impervious material in the state which heated the said heating rod, and is made to fill the water-impervious material already thrown in efficiently. be able to.

  Furthermore, in the present invention, the heating rod can be efficiently penetrated into the water shielding material by penetrating into the water shielding material while applying a downward pushing force by the pushing means to the heating rod.

  Further, in the present invention, the heating rod is disposed between the structural members, and the portion between the structural members is heated by the heating rod, and then the water shielding material is introduced between the structural members. By arranging the heating rod in the water material, it is possible to suppress a decrease in fluidity when the water shielding material is charged.

  Moreover, in this invention, by pressing the said water shielding material heated with the said heating rod with a press means, the consolidation settlement of a water shielding material can be accelerated | stimulated, and a water shielding material can be filled efficiently and exactly. .

  Further, in the present invention, the heating rod has an outward pipe to which a heating fluid is supplied from a heat supply unit, and a return pipe that is concentrically arranged with the forward pipe outside the forward pipe, and passes through the outward pipe. Since the heated fluid is discharged through the return pipe, the water shielding material can be stably heated even for a long time.

  Furthermore, in the present invention, the heating rod has a high efficiency because it can reduce heat loss when circulating in the heating rod by disposing a heat insulating material between the forward pipe and the backward pipe.

It is a block diagram which shows the outline of the apparatus used for this invention method. It is a longitudinal cross-sectional view which shows an example of the heating rod in FIG. It is a longitudinal cross-sectional view which shows the outline of the water-insulating material injection | throwing-in process in the water-insulating process of the structure based on this invention. It is a longitudinal cross-sectional view which shows the outline of a heating rod penetration process same as the above. It is a longitudinal cross-sectional view which shows the outline of a water shielding material heating process same as the above. It is a longitudinal cross-sectional view which shows the outline of a water shielding material consolidation promotion process same as the above. It is a longitudinal cross-sectional view which shows the state with which the water shielding material same as the above was filled. It is a longitudinal cross-sectional view which shows another example of the heating rod in FIG. It is a longitudinal cross-sectional view which shows another example of the water-shielding material injection | throwing-in process in this invention method. It is a top view which shows an example of the structure which has a water-impervious structure.

  Next, the mode of the apparatus used for the method of the present invention will be described based on the embodiment shown in FIGS. In the figure, reference numeral 10 denotes a heating rod, and reference numeral 11 denotes a heat supply unit.

  The heating rod 10 is formed in a rod shape with a metal material having high thermal conductivity. As shown in FIG. 2, the heating rod 10 has a plurality of cylindrical outward passage pipes 12 and return passage pipes 13 concentrically arranged outside the outward passage pipes 12. Are formed by connecting the double tubes 10a, 10a. In the figure, reference numeral 14 denotes a spacer for holding the forward path pipe 12 in the return path 13.

  In addition, a lower end portion of the heating rod 10 has a communication portion 15 that allows the outward passage tube 12 and the return passage tube 13 to communicate with each other, and a fluid such as water that has passed through the outward passage tube 12 through the communication portion 15 passes through the return passage tube 12. 13 flows into the flow path between the outer peripheral surface of the forward pipe 12 and the inner peripheral surface of the return pipe 13.

  On the other hand, a connecting cap 16 is attached to the upper end portion of the heating rod 10, and the hose constituting the supply flow channel 17 is discharged to the upper end portion of the outward pipe 12 via the connecting cap 16. A hose constituting the flow path 18 is connected to the upper end portion of the return pipe 13.

  The other end of the supply channel 17 is connected to a heating means 19 such as a boiler, and hot water heated by the heating means 19 is supplied into the forward pipe 12.

  On the other hand, the other end of the discharge channel 18 is connected to a pump 20, and hot water is circulated between the heating rod 10 and the heat supply unit 2 by the pump 20. In the figure, reference numeral 21 denotes a water storage tank for storing circulating water, and reference numeral 22 denotes a communication path for allowing the heating means 19 and the pump 20 to communicate with each other.

  Further, a cooling pipe 23 is provided in the middle of the discharge flow path 18 so that the hot water is cooled and then returned to the heat supply unit 11, so that even when the equipment such as the pump 20 is not heat resistant. It can be supported.

  In the apparatus configured as described above, hot water heated to about 100 to 140 ° C. by the heating means 19 is sent into the forward pipe 12 of the heating rod 10 by the pump 20, and the hot water is sent to the forward pipe 12 and the communication portion. 15 and the return pipe 13 are sequentially passed, and it returns to the heat supply unit 11. By repeating this circulation, the heating rod 10 dissipates heat with a desired amount of heat throughout the rod. The fluid flowing through the circulation system is not limited to water, and may be other fluids.

  Next, the example shown in FIGS. 3 to 7 will be described with respect to the water shielding treatment method for a structure according to the present invention using the above-described apparatus. The same parts as those in the above-described conventional example will be described with the same reference numerals.

  As in the conventional example shown in FIG. 10, the impermeable wall A is a male-female type in which a structural member such as a steel pipe sheet pile 1 is erected on the water bottom ground, and between the adjacent steel pipe sheet piles 1 and 1 is made of CT steel. The coupling members 4a and 4b are connected.

  The impermeable wall A includes a partition plate mounting pipe 2 fixed to the front side of each of the adjacent steel pipe sheet piles 1, 1, and a partition member 3 made of grooved steel is attached to both the mounting pipes 2, 2. By supporting both side edges of the joint portion 4, the steel sheet sheet piles 1 and 1, which are structural members, the partition member 3 and the joint portion 4 are formed on the front side of the joint portion 4 so as to form a vertically long water shielding material filling portion 5. Has been.

  The water-impervious wall A has a water impermeability to the bottom in the water-impervious material filling part 5 and is filled with a water-impervious material 6 such as asphalt mastic that increases fluidity by heating. Water shielding treatment is performed between 1 and 1.

  In order to fill the water-impervious material filling portion 5 with the water-impervious material 6, first, as shown in FIG. throw into. Reference numeral 30 in the drawing denotes a discharge device for discharging the water shielding material 6.

  The introduced water shielding material 6 sinks while pushing out the water in the water shielding material filling portion 5 and fills the water shielding material filling portion 5 sequentially from the bottom.

  At this time, the water shielding material 6 has a high fluidity because it is heated at the time of charging, while the water shielding material 6 is cooled by the internal water as it sinks in the water shielding material filling portion 5 and has a fluidity. In the water-insulating material layer portion 6a at the bottom of the water-insulating material filling portion 5, the water-insulating material layer portion 6a is in a sparsely filled state, that is, in a state in which there are not a lot of voids in the inside and is close to the upper opening. The water shielding material layer 6b on the side is in a high filling state with relatively few voids.

  Therefore, after the fixed amount of the water shielding material 6 is finished, a heating fluid of about 100 to 140 ° C. is supplied from the heat supply unit 11 to heat the heating rod 10, and in this state, the heating rod 10 is filled with the water shielding material filling portion. 5 is inserted from the upper surface opening and penetrates into the water shielding material 6 while being heated. At that time, it is desirable to allow the heating rod 10 to penetrate while applying a downward pushing force by the pushing means 31.

  For example, a boring device having a chuck 32 capable of gripping the outer peripheral portion of the heating rod 10 as shown in FIG. 4 can be used as the pushing means 31.

  The boring device 31 is installed on a work table 33 on the impermeable wall A, and includes a cylindrical spindle 34 having a chuck 32 at the tip, and a driving means 35 for moving the spindle 34 up and down, and the heating rod 10 is connected to the spindle. 34, and is held by the chuck 32. In this state, the spindle 34 is lowered by the stroke to apply a downward pushing force to the heating rod 10.

  The boring device 31 can rotate the spindle 34 around its central axis, and can also apply a rotational force to the heating rod 10.

  When such a pushing means 31 is used and the spindle 34 is lowered by one stroke, the chuck 32 is removed from the heating rod 10, and the spindle 34 is raised in that state, and the upper portion of the heating rod 10 above the gripping portion. In this state, the operation of lowering the spindle 34 again is repeated until reaching a predetermined depth, that is, the bottom of the water shielding material filling portion 5.

  The heating rod 10 can be penetrated efficiently while pushing away the water-impervious material 6 that has been heated and has increased fluidity due to the downward pushing force applied by the pushing means 31.

  The heating rod 10 may be assembled to a length corresponding to the penetration depth in advance, and the double pipes 10a and 10a constituting the heating rod 10 are joined each time the heating rod 10 is penetrated to a certain depth as required. You may make it add.

  After the heating rod 10 has penetrated until the lower end reaches the bottom of the water-impervious material filling portion 5, the water-impervious material 6 is heated while the surrounding water-impervious material 6 is heated by the heating rod 10, as shown in FIG. To close packing.

  That is, the water-impervious material 6 cooled by the water in the water-impervious material filling portion 5 after being charged is heated to 50 ° C. or more by the heating rod 10 to increase the fluidity, and the heat rod 10 is impermeable to water during the filling operation. Since it is in the state embedded in 6, fluidity | liquidity is maintained. Further, since the heating rod 10 is embedded in the water shielding material, not only the surface portion of the water shielding material 6 but also the entire water shielding material 6 can be heated.

  By heating the water shielding material 6 for a certain period of time in such a state, the water shielding material layer portion 6a at the bottom with many voids is consolidated, and the water shielding material 6 is dense to the corner also at the bottom of the water shielding material filling portion 5. Filled.

  Further, in order to promote this filling operation, a water blocking function is achieved by inserting a pressing rod 36 into the water blocking material 6 as a pressing means from the upper surface opening of the water blocking material filling part 5 and applying pressure from the water blocking material 6. The consolidation settlement and filling of the material 6 can be promoted. The pressing rod 36 can be efficiently inserted by being heated by the heating rod 10 and increasing the fluidity of the water shielding material 6.

  After the above filling operation is continued for a certain period of time, the pressing rod 36 is pulled out, and as shown in FIG. 7, the water shielding material 6 is filled in a state where there is no gap and is vacated by the consolidation sink. A heated water shielding material 6 is added to the upper part of the filling unit 5.

  Then, the above filling operation is repeated, and after the predetermined amount, that is, the amount of the water shielding material 6 equal to or larger than the volume in the water shielding material filling portion 5 is filled, the heating rod 10 is pulled out.

  As shown in FIG. 8, the heating rod 10 may have a structure in which the outside of the forward pipe 12 is covered with a heat insulating material 40, and the fluid whose temperature flowing in the return pipe 13 is lowered by this heat insulating material. Therefore, it is possible to prevent the amount of heat of the heating fluid flowing in the forward pipe 12 from being deprived.

  In the above-described embodiment, an example in which a boring machine is used as the push-in means 31 has been described. However, the push-in means 31 may be pushed in manually using a lever block or the like.

  Furthermore, in the above-described embodiment, the example in which the heating rod 10 is inserted after the water shielding material 6 is introduced into the water shielding material filling portion 5 between the structural members 1 and 1 has been described. A heating rod 10 is inserted in the filling portion 5 in advance, and the surrounding water is heated by the heating rod 10, and then the water shielding material 6 is introduced so that the heating rod 10 is disposed in the water shielding material 6. The water shielding material 6 may be heated by the heating rod 10 for a certain time.

  Moreover, as shown in FIG. 9, a heating means may be provided in the discharge pipe 50 which discharges the water shielding material 6, and this discharge pipe 50 itself may be used as a heating rod. In this case, while the discharge pipe 50 is inserted to the bottom, a certain amount of the water shielding material 6 is discharged, and the surrounding water shielding material 6 discharged from the discharge pipe 50 is heated at that position.

  In the above-described embodiment, the example in which the steel pipe sheet piles 1 and 1 of the impermeable wall A constituting the partition revetment are impermeable is described. However, in other structures such as the impermeable treatment of the joint portion of the caisson. The present invention can also be applied to a case where a water shielding treatment is performed between structural members.

A Water shielding wall 10 Heating rod 11 Heat supply unit 12 Outward pipe 13 Return pipe 14 Spacer 15 Communication portion 16 Connection cap 17 Supply flow path 18 Discharge flow path 19 Heating means 20 Pump 21 Water tank
22 Communication path 23 Cooling pipe 30 Discharge device 31 Extruding means 32 Chuck 33 Work table 34 Spindle 35 Driving means 36 Extruding rod 40 Insulating material 50 Discharge pipe

Claims (7)

A structure for applying a water shielding treatment between the structural members by introducing a water shielding material such as asphalt mastic that increases fluidity by heating between adjacent structural members and filling the water shielding material between the structural members. In the water shielding treatment method of
A rod-shaped heating rod is disposed in the water shielding material introduced between the structural members, and the fluidity of the water shielding material is increased by heating the heating rod so that the water shielding material is sealed between the structural members. And then, the heating rod is pulled out of the water shielding material.   The method for water shielding treatment of a structure according to claim 1, wherein the water shielding material is inserted between the structural members and then penetrates into the water shielding material in a state where the heating rod is heated.   The water-insulating method for a structure according to claim 2, wherein the water rod is penetrated into the water shielding material while applying a downward pushing force by a pushing means to the heating rod.   The heating rod is disposed between the structural members, and the portion between the structural members is heated by the heating rod, and then the water shielding material is introduced between the structural members, and the heating is introduced into the introduced water shielding material. The method for water shielding treatment of a structure according to claim 1, wherein the rod is arranged.   The water-impervious treatment method for a structure according to claim 1, wherein the water-impervious material heated by the heating rod is pressed by pressing means.   The heating rod has an outward pipe to which a heating fluid is supplied from a heat supply unit, and a return pipe that is concentrically arranged with the forward pipe outside the forward pipe, and the heated fluid that has passed through the forward pipe is The water-insulating method for a structure according to claim 1, wherein the structure is discharged through a return pipe. The structure according to claim 6, wherein the heating rod has a heat insulating material disposed between the forward pipe and the backward pipe.

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