Drain pipe fitted with bag body

Abstract

To provide a drain pipe fitted with a bag body which can carry out the strengthening and the draining of the ground better than before and can improve the effect of work period reduction and cost reduction.SOLUTION: A drain pipe 1 fitted with a bag body comprises a pipe body 11 that extends in the direction of penetrating into the ground and a bag body 161 that is installed on the pipe body 11. The aforesaid pipe body 11, having a partition wall 12 that extends along the penetration direction inside the pipe body 11 and being partitioned with the partition wall 12, consists of an injection part 13 capable of injecting a solidification material into the aforesaid bag body 161 and a drain part 14 capable of draining the water collected in the ground. The aforesaid injection part 13 comprises an injection port 131 to fill the solidification material into the aforesaid bag body 161 and the aforesaid drain part 14 comprises a water-collecting port 141 before the aforesaid bag body 161 along the penetration direction and / or beyond the aforesaid bag body 161 along the penetration direction.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a drainage pipe with a bag that can reinforce the ground and drain groundwater from within the ground. [Background technology]

[0002] Traditionally, earth structures that require a certain design strength have been constructed by implementing two types of measures: shear reinforcement measures against slope collapse (e.g., natural ground reinforcement earthworks) and drainage measures (e.g., drainage pipe construction methods).

[0003] For example, Patent Document 1 discloses a ground reinforcement method using a perforated steel pipe with blades, which has spiral blades and drainage holes on the outer periphery of the steel pipe body. This aims to increase the resistance to collapse and deformation of the ground by utilizing the adhesion effect based on the peripheral friction resistance between the perforated steel pipe with blades and the ground while providing the function of drainage holes.

[0004] Furthermore, Patent Document 2 discloses a ground reinforcement method in which a bag is provided at the tip of a polyethylene collection and drainage pipe, a partition member is installed at the boundary between the collection and drainage pipe and the bag member, and grout is injected into the bag member through an injection pipe that penetrates the partition member and is placed inside the collection and drainage pipe. This aims to stabilize the ground by forming an anchorage inside the ground using the bag member expanded with grout. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-056505 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-170115 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the invention disclosed in the aforementioned Patent Document 1 requires the installation of large machinery and a location for that machinery to penetrate the perforated steel pipe with blades. In addition, the resistance of the perforated steel pipe with blades is provided only by the peripheral friction resistance.

[0007] Furthermore, in the invention disclosed in the aforementioned Patent Document 2, although resistance can be expected from the bag body after the grout is injected, due to its structure, compaction effects, etc., cannot be expected from the collection and drainage pipe itself. In addition, the cross-sectional area of ​​the drainage hole is small compared to the cross-sectional area of ​​the collection and drainage pipe, so when a large amount of water is to be collected and drained, there is a risk that the amount of drainage will be insufficient or that clogging will occur due to sediment, etc.

[0008] In view of the above-mentioned problems, the present invention aims to provide a drainage pipe with a bag that can reinforce and drain the ground more effectively than conventional methods, and that can improve the effectiveness of shortening construction time and reducing costs. [Means for solving the problem]

[0009] The invention related to (1) is a drainage pipe with a bag, which has a pipe body extending in the direction of penetration into the ground and a bag body attached to the pipe body, wherein the pipe body is provided with a partition extending in the penetration direction inside the pipe body, and is separated by the partition and comprises an injection section capable of injecting a solidification material into the bag body and a drainage section capable of draining water collected in the ground, the injection section having an injection port for filling the solidification material into the bag body, and the drainage section having a water collection port in front of the bag body in the direction of penetration and / or at the rear of the bag body in the direction of penetration.

[0010] The invention according to (2) is the drainage pipe with bag according to (1) above, characterized in that the pipe body is provided with a plurality of the bags.

[0011] The invention according to (3) is the drainage pipe with bag according to (2) above, characterized in that the drainage section extending between the bag bodies is provided with the water collection port.

[0012] The invention related to (4) is a drainage pipe with a bag body described in any of (1) to (3) above, characterized in that a filling pipe connected to the injection port and used to fill the bag body with the solidification material is inserted into the injection section.

[0013] The invention related to (5) is a drainage pipe with a bag described in (4) above, characterized in that the filling pipe is removed after the solidification material is filled in the bag, and the solidification material is filled in the injection section.

[0014] The inventions (6) to (8) are drainage pipes with bags described in any of (1) to (5) above, characterized in that a reinforcing core extending in the penetration direction is inserted into the injection section.

[0015] The invention related to (9) is a drainage pipe with a bag described in any of (1) to (3) above, characterized in that the pipe body is formed into an approximately circular shape by joining two approximately semicircular pipes, and the joining surface of the approximately semicircular pipes is used as the partition. [Effects of the Invention]

[0016] According to the drainage pipe with a bag of the present invention, a partition wall is provided inside the pipe body, which can reliably separate the injection section where the solidification material is injected into the bag from the drainage section where the collected water is drained. This reliably prevents the solidification material from leaking and impairing the drainage function of the drainage section.

[0017] In addition, the bag body can be installed at any position in the penetration direction, and depending on the installation position of the bag body, a water collection port can be installed in front of the bag body in the penetration direction and / or at the back of the bag body in the penetration direction to ensure drainage function.

[0018] The characteristic configuration of the present invention as described above makes it possible to reinforce and drain the ground more effectively than ever before, and also to improve the effects of shortening the construction period and reducing costs. [Brief explanation of the drawings]

[0019] [Figure 1] In one embodiment of the present invention, (a) is a top view of a drainage pipe with a bag inserted into the ground, and (b) is a cross-sectional view taken along the lines AA and BB in (a). [Figure 2] In one embodiment of the present invention, (a) is a top view of a drainage pipe with a bag that has been inserted into the ground and filled with solidification material, and (b) is a cross-sectional view AA and a cross-sectional view BB in (a). [Figure 3] In another embodiment of the present invention, (a) is a top view of a drainage pipe with a bag containing a reinforcing core that has been inserted into the ground and filled with solidification material, and (b) is a cross-sectional view AA and a cross-sectional view BB in (a). [Figure 4] In another embodiment of the present invention, (a) is a cross-sectional view of a substantially semicircular pipe, and (b) is a cross-sectional view of a pipe body formed by joining two substantially semicircular pipes. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, various embodiments of the drain pipe with a bag of the present invention will be described with reference to the drawings. Note that the drain pipe with a bag of the present invention is not necessarily limited to the various embodiments shown below.

[0021] The drainage pipe with a bag of the present invention is a drainage pipe with a bag 1 that can reinforce the ground and drain groundwater from the ground. As shown in Figure 1(a), it has a pipe body 11 that extends in the direction of penetration into the ground (the left-right direction in the figure), and a bag body 161 provided on the pipe body 11.

[0022] Figure 1(a) shows a top view of a drainage pipe 1 with a bag that has been inserted into the ground from its tip 17 and fixed to the ground surface (inclined surface) with a bearing plate 15. Figure 1(b) shows a cross-sectional view of AA and a cross-sectional view of BB in Figure 1(a).

[0023] As shown in the figure, the pipe body 11 of the bag-equipped drainage pipe 1 of this embodiment has a partition 12 (dashed line portion in Figure 1(a)) extending in the penetration direction (left-right direction in the figure) inside the pipe body 11, and is separated by the partition 12 and consists of an injection section 13 that can inject solidification material into the bag body 161, and a drainage section 14 that can drain water collected in the ground, the injection section 13 has an injection port 131 for filling the bag body 161 with solidification material, and the drainage section 14 has a water collection port 141 before the penetration direction of the bag body 161 and / or at the back side of the penetration direction of the bag body 161.

[0024] Explaining this embodiment in more detail, in the example shown in Figure 1(a), a plurality of bags 161 (three in the illustrated example) are provided at predetermined intervals on the pipe body 11. The front and rear ends of each bag 161 are firmly fixed to the pipe body 11 by ring-shaped bands to prevent leakage of the solidification material to be filled. Furthermore, the drainage section 14 extending between the bags 161 is provided with a water collection port 141, as shown in the AA cross-sectional views shown in Figures 1(a) and 1(b).

[0025] 1(a) and 1(b), the injection section 13 is provided with an injection port 131 on the upper side, which is used to fill the solidification material by injecting the material under pressure into the bag body 161 while controlling the pressure. It is preferable to provide a check valve (not shown) at the injection port 131 to prevent the solidification material filled inside the bag body 161 from leaking from the injection port 131. There are no particular restrictions on the type of check valve, as long as it can appropriately prevent leakage of the solidification material.

[0026] In addition, in the illustrated embodiment, the solidification material injected into the injection section 13 is configured to be filled into the inside of the bag body 161 through the injection port 131, but this configuration is not necessarily limited to this.

[0027] For example, it is also possible to insert a filling pipe (not shown) for filling the bag body 161 with the solidification material into the injection part 13 and connect the filling pipe to the injection port 131. Such a filling pipe may be removed after the bag body 161 is filled with the solidification material, and the inside of the injection part 13 may be filled with the solidification material.

[0028] Furthermore, the check valve (not shown) described above may be provided at the rear end 18 of the injection section 13 in addition to the injection port 131, which makes it possible to apply appropriate pressure without leaking the solidification material filled in the bag body 161 or the solidification material filled in the injection section 13 until it solidifies.

[0029] In this embodiment, a material made of cement milk is used as the solidifying agent, but this is not necessarily limited to such a material. Any material that solidifies with appropriate strength after being filled into the bag body 161 can be used as appropriate. Furthermore, it is preferable to cast the drainage pipe 1 with a bag body upward at a predetermined angle so as to have a downward slope relative to the ground surface (slope) so that the water can be properly drained to the ground surface (slope). On the other hand, if the drainage pipe 1 with a bag body is cast so as to have a downward slope relative to the ground surface (slope), there is a risk of the cement milk dripping from the opening of the rear end 18 of the injection section 13. To effectively prevent this, it is preferable to provide a watertight cover at the opening to prevent dripping.

[0030] Next, Figure 2(a) shows a top view of a drainage pipe 1 with a bag that has been inserted into the ground from the ground surface (e.g., a slope) and filled with solidification material, and Figure 2(b) shows a cross-sectional view AA and a cross-sectional view BB in Figure 2(a).

[0031] As shown in the figure, the solidification material injected under pressure into the injection section 13 under pressure control is filled into the bag body 161 through the injection port 131, thereby forming multiple bulging sections 16 as shown in the figure. On the other hand, the drainage section 14 separated by the partition wall 12 is not affected in any way by the filling of the solidification material, and is able to drain the water collected from the water collection port 141 to the ground surface as shown in Figure 2(b).

[0032] As described above, by forming multiple bulges 16 on the pipe body 11 to create unevenness, it is possible to achieve drainage measures within the ground, as well as to obtain ground reinforcement effects such as compacting the ground due to the expansion of the bag body 161 and increasing pull-out resistance due to the bearing resistance of the multiple bulges 16.

[0033] As described above, the number and installation positions of the bags 161 can be set as desired, so that the ground strength can be increased efficiently by installing the bags 161 only in areas that require reinforcement by the bulging portions 16. In addition, since ground drainage measures and reinforcement measures can be carried out simultaneously as described above, it is possible to achieve the effects of shortening the construction period and reducing costs.

[0034] (Another embodiment) Although one embodiment of the present invention has been described above, the bag-equipped drainage pipe of the present invention is not necessarily limited to the above-described embodiment.

[0035] For example, as shown in Figure 3, it is possible to insert a reinforcing core 19 extending in the penetration direction into the inside of the injection part 13. By adopting such a configuration, it is possible to increase the pull-out resistance and shear resistance of the pipe body 11.

[0036] The material of the reinforcing core 19 is not particularly limited, and it is possible to use rod-shaped materials made of carbon fiber, glass fiber, or the like, in addition to steel bars.

[0037] As shown in FIG. 4, it is also possible to form a substantially circular pipe body 11 by joining two substantially semicircular pipes 111, and use the joining surface of the substantially semicircular pipes 111 as the partition wall 12.

[0038] To explain in more detail, for example, a substantially semicircular pipe 111 as shown in the cross-sectional view of Figure 4(a) can be used and welded together as shown in Figure 4(b) to form a substantially circular pipe body 11.

[0039] As described above, by joining existing approximately semicircular pipes 111, it is possible to easily and reliably form the injection section 13 and the drainage section 14 separately. For example, existing approximately semicircular pipes 111 with a = 60 mm and b = 30 mm as shown in the figure, or approximately semicircular pipes 111 with a = 80 mm and b = 40 mm as shown in the figure, can be used. With this configuration, it is possible to increase the strength of the pipe itself compared to the pipe main body 11 in the previously described embodiment, which is a circular pipe divided at the center.

[0040] The method of joining the approximately semicircular pipes 111 is not limited to welding, and various known joining methods can be applied as long as they can firmly join the approximately semicircular pipes 111 to each other.

[0041] Furthermore, the approximately semicircular pipe 111 is not limited to the cross-sectional shape shown in Figure 4, and can be used as appropriate as long as the pipe body 11 formed by joining has an approximately circular shape that can be inserted into the ground.

[0042] In the above-described embodiment, injection port 131 is provided at the top of injection section 13, but this is not necessarily limited to this, and the opening position and number of injection ports 131 can be changed. Furthermore, the bag body 161 used in the present invention is made of rubber, and its material is not particularly limited.

[0043] In addition, in the above-mentioned embodiment and other embodiments, the injection section 13 and the drainage section 14 in the pipe main body 11 are configured as left and right sections (vertical division), but this configuration is not necessarily limited to this, and it is also possible to configure the injection section 13 and the drainage section 14 as top and bottom sections (horizontal division).

[0044] Although one embodiment and another embodiment have been described above, the scope of the present invention is defined by the claims rather than the description of each embodiment above, and further includes all modifications within the meaning and scope of the claims. Furthermore, the specific materials, dimensions, shapes, etc. described in the above embodiments can be modified within the scope of solving the problems of the present invention. [Explanation of symbols]

[0045] 1 Drainage pipe with bag 11 Tube body 111 Semicircular Pipe 12 Bulkhead 13 Injection part 131 Inlet 14 Drainage section 141 Water collection outlet 15 Bearing plate 16 Bulge 161 Bag body 162 Solidification material 17 Tip 18 Rear end 19 Reinforcing core

Claims

1. A drainage pipe with a bag body having a pipe body extending in the direction of penetration into the ground and a bag body provided on the pipe body, The pipe body is provided with a partition wall extending in the penetration direction inside the pipe body, and is divided by the partition wall into an injection section capable of injecting a solidification material into the bag body and a drainage section capable of draining water collected in the ground, the injection unit includes an injection port for filling the bag body with a solidifying material, The drainage section has a water collection port on the front side of the bag body in the penetration direction and / or on the rear side of the bag body in the penetration direction. A drainage pipe with a bag.

2. The pipe body is provided with a plurality of the bags.

2. The bag-equipped drainage pipe according to claim 1.

3. The drainage portion extending between the bags includes the water collection port.

3. The bag-equipped drainage pipe according to claim 2.

4. A filling pipe that is connected to the injection port and fills the bag body with the solidification material is inserted into the injection section.

4. The bag-equipped drainage pipe according to claim 1.

5. The filling pipe is removed after the bag body is filled with the solidification material, and the solidification material is filled into the injection part.

5. The bag-equipped drainage pipe according to claim 4.

6. A reinforcing core extending in the penetration direction is inserted into the injection section.

4. The bag-equipped drainage pipe according to claim 1.

7. A reinforcing core extending in the penetration direction is inserted into the injection section.

5. The bag-equipped drainage pipe according to claim 4.

8. A reinforcing core extending in the penetration direction is inserted into the injection section.

6. The bag-equipped drainage pipe according to claim 5.

9. The pipe body is formed into a substantially circular shape by joining two substantially semicircular pipes, and the joining surface of the substantially semicircular pipes serves as the partition wall.

4. The bag-equipped drainage pipe according to claim 1.

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