JP2005061143A - Connector of drain material and driving method of the drain material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector capable of easily and surely constraining drain materials in a state to mutually intersect to put them on top of each other. <P>SOLUTION: The connector 10 is equipped with a flat cylindrical connector body 11 made by bending molding a transparent plastic plate. The connector body 11 is so constituted that one side of a flat plate section thereof is used for an openable opening and closing lid 12, the opening and closing lid 12 can be closed to a door stop section 13 formed in the connector body 11 by making use of a latch 15 and an opening 14 by one-touch. An extra length section of a vertical drain material 1 driven into a soft ground G is bent in a row state, and after bending parts 1a of the adjoining vertical drain materials 1 are overlapped to insert them in the connector 10, the horizontal drain material 2 is extended through a drain material insertion inlet 17, and after that, when the opening and closing lid 12 is closed, the bending parts 1a of a pair of adjoining vertical drain materials 1 and the horizontal drain material 2 are intersected to constrain in a state to adhere to each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a connector used for connecting a drain material for compacting soft ground and a drain material placing method performed using the connector.

  The vertical drain method is widely known as a method of draining pore water in soft ground through a drain material to consolidate the soft ground. In this vertical drain construction method, sand is generally deposited on soft ground to form a sand mat, and then a vertical drain material (vertical drain material) is placed in the ground through the sand mat, and the pore water in the ground is The water is led to the ground surface through a water passage in the vertical drain material, and further drained to the side through a gap in the sand mat.

  By the way, the above-mentioned sand mat is usually about 0.5 to 1.0 m thick, and a large amount of sand is required for its formation. On the other hand, this sand mat requires high-quality sand for the purpose of ensuring a certain level of water permeability (water permeability), and must rely on natural sand such as river sand. However, in recent years, natural sand has been depleted and awareness of environmental destruction has increased, making it difficult to obtain high-quality natural sand and developing a drain method that does not use sand mats. Was desired.

Therefore, for example, Patent Document 1 discloses a ground improvement method in which a surplus length portion of a vertical drain material placed in the ground is bent, and the bent portion is connected to a bent portion of an adjacent vertical drain material to form a horizontal drain portion. (Drain method) is described.
Further, Patent Document 2 describes a drain construction method in which an extra length portion of a vertical drain material placed in the ground is bent and this bent portion is overlapped with a horizontal drain material arranged on the ground.
Further, Patent Document 3 discloses a connecting tape in which a bent portion of an extra length portion of a vertical drain material placed in the ground is stacked on a plate-like horizontal drain material, and the bent portion is fixed to the horizontal drain material. The constrained drain method is described.

JP 2002-4263 A JP 2001-3342 A JP 2001-271336 A

However, according to the drain method described in Patent Documents 1 and 2, since the vertical drain material itself has considerable elasticity, the bent portions are simply overlapped with each other, or the bent portions are used as the horizontal drain material. If they are simply stacked, it is difficult to maintain the close contact with each other, and the drainage capacity to the side will be impaired.
Furthermore, according to the drain method described in Patent Document 3, although the bent portion of the vertical drain material is restrained with respect to the horizontal drain material, the securing of adhesion is insufficient only by restraining with the tape, and the drainage capacity Lack of stability. In addition, troublesome work (welding, bonding, binding, etc.) for fixing the tape to the horizontal drain material is required, and there are many problems in terms of workability.
The present invention has been made in view of the above-described conventional problems, and the object of the present invention is to provide a connector that can easily and reliably restrain drain materials in a state of being stacked in a cross shape. In addition, another object is to provide a method for placing a drain material using this connector.

In order to solve the above-mentioned problems, a drain material connector according to the present invention includes a flat cylindrical connector body having an inner cross-section in which at least two drain members can be stacked and stored, and the connector body includes: The flat plate portion of the one surface is configured as an opening / closing lid, and has an engaging means for engaging the opening / closing lid in a closed position, and the connector body allows a drain material to be inserted into the left and right side surfaces thereof. A material insertion port is provided.
In the drain material connector configured in this way, the open / close lid is opened and either the bent portion of the vertical drain material or the horizontal drain material is inserted into the tubular shape of the connector body, and the drain material is inserted. When the other drain member is extended through the mouth and then the opening / closing lid is closed by the engaging means, the bent portion of the vertical drain member and the horizontal drain member are reliably restrained in an overlapping state.
In the present connecting tool, the engaging means includes a clip projecting from a door-contact portion with which an edge of the opening / closing lid abuts and an opening provided at an edge of the opening / closing lid. However, the opening / closing lid can be engaged with the opening according to the closing operation of the opening / closing lid, and in this case, the opening / closing lid can be closed with one touch.
Further, it is desirable that the connector main body is made of a transparent or translucent plastic. In this case, since the inside can be visually observed, the connection work can be performed easily and reliably.

In the drain material placing method according to the present invention, an extra length portion of vertical drain material placed in a row in soft ground is bent, and the bent portion is inserted into the connecting tool, and the vertical drain material is bent. A portion and a horizontal drain material extending through the connection tool are overlapped and intersected in the connection tool, and the vertical drain materials of each row are connected to each other by the horizontal drain material.
In this drain material placing method, the bent portion of the vertical drain material may be inserted into the tubular shape of the connection tool, and the horizontal drain material may be extended through the drain material insertion port. In this case, it is possible to fold the extra length portion of the vertical drain material in the direction in which the adjacent drain materials face each other and insert each folded portion so as to overlap the connecting device. The surplus length part is folded in the same direction in each row, and the bent portions of adjacent vertical drain materials are inserted in the connecting device, and the bent portions of the vertical drain materials are connected via the connecting device. Thus, a series of horizontal drain portions may be used.

As described above in detail, according to the drain material connector according to the present invention, the bent portion of the vertical drain material and the horizontal drain material can be easily and reliably restrained in a state of being overlapped. .
Further, according to the draining material placing method according to the present invention, the water drainage can be formed by easily and reliably stacking the bent portion of the adjacent vertical drain material and the horizontal drain material using the connecting tool. Even if a sand mat is not used, a large drainage capacity can be secured.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 3 show a drain material connecting jig according to an embodiment of the present invention. In these drawings, 1 is a vertical drain material placed in the soft ground G, 2 is a horizontal drain material laid on the soft ground G, and 10 is a connector according to the present invention.

  Here, the vertical drain material 1 and the horizontal drain material 2 are made of a plastic board drain material having a strip shape. As an example, this plastic board drain material has a structure in which a corrugated core material 3 made of a three-dimensional network structure is covered with a porous skin (nonwoven fabric) 4 and has sufficient flexibility despite its high pressure resistance. have. Therefore, it is possible not only to be bent at 90 degrees, but also to be bent at 90 degrees. In the vertical drain material 1 shown in FIG. 1, the extra length exposed from the ground G is bent 90 degrees, and even if it is bent in this way, a sufficient water passage area is secured in the inside.

  The connector 10 includes a connector body 11 having a flat cylindrical shape. Here, the connector main body 11 is manufactured by bending a transparent plastic plate, and the flat plate portion of one surface thereof is configured as an opening / closing lid 12 that opens and closes with a broken line on one side as a hinge 12a. The connector main body 11 is also provided with a bent piece 13 at the edge on the side facing the hinge 12a. The bent piece 13 is used as a door stop for bringing the end edge of the opening / closing lid 12 into contact with each other. Between the door stop (bending piece) 13 and the edge of the opening / closing cover 12, Are provided with a plurality of engaging means 14 for fixing the position of the opening / closing lid 12 in the closed state.

Here, the engaging means 14 includes a fastener 15 protruding from the door stop 13 and an opening 16 provided at an end edge of the opening / closing lid 12. As shown well in FIG. 2, the fastener 15 includes a thick columnar portion 15a having a constricted portion and a pedestal portion 15b. The columnar portion 15a is engaged with the opening 16 on the opening / closing lid 12 side. Thus, the opening / closing lid 12 is detachably locked to the fastener 15. That is, when the opening / closing lid 12 is pressed in the closing direction by aligning the opening 16 on the opening / closing lid 12 side with the fastener 15 on the door stop 13 side, the opening / closing lid 12 is locked to the fastener 15 with one touch. . The fastener 15 is integrally formed from a resin, and is fixed to the door stop 13 through an appropriate method such as heat welding or adhesion via the pedestal 15b.
The connector main body 11 is also provided with drain material insertion ports 17 and 17 that allow the horizontal drain material 2 to be inserted on the left and right side surfaces thereof. The drain material insertion port 17 is provided at a location biased to the upper side (opening / closing lid 12 side) of the side surface of the connector main body 11.

  The size of the connector main body 11 is set so as to have a hollow cross section in which the three drain members 1 and 2 can be stacked and stored with the open / close lid 12 closed. Therefore, as shown in FIG. 3, even when two bent portions 1 a of the vertical drain material 1 are stacked and stored in the connector main body 11, there is room for further stacking the horizontal drain material 2 thereon. . In this case, if the height of the inner cross section of the connector main body 11 is set to a minimum necessary height that allows the three drain materials to be stacked and stored, two vertical drain materials can be obtained by closing the open / close lid 12. 1 and the one horizontal drain material 2 come to be restrained in this connection tool 10 in the state closely_contact | adhered mutually.

  In addition, a fold 18 is formed on the left and right side surfaces of the connector main body 11, and the opening / closing lid 12 is provided with a pair of openings 16 constituting the engaging means 14. This is a drain material. It is assumed that two sheets are stored in piles. That is, by bending the connector main body 11 from the fold line 18, the height of the inner cross section of the connector 10 becomes lower (a flatter shape), while the opening 16 on the back side is selected and the fastener is selected. By engaging 15, the function of closing the opening / closing lid 12 with one touch is maintained as it is.

Hereinafter, the drain material placing method performed using the connector 10 configured as described above will be described.
4 and 5 show a first embodiment of the drain material placing method. In the first embodiment, after the vertical drain members 1 are placed in rows at a predetermined pitch in the soft ground G, the extra length portions of the vertical drain members 1 in each row are adjacent to each other. Bend in the direction facing each other. In FIGS. 4 and 5, for convenience of explanation, the number of vertical drain members 1 to be placed in a row is six and the number of rows is three. However, the number and the number of rows are arbitrary. Needless to say, there is something.

  Next, using this connector 10, the opening / closing lid 12 of the connector body 11 is opened, and first, the bent portions 1 a of the pair of adjacent vertical drain materials 1 are overlapped in the interior from opposite directions. Insert. Next, the horizontal drain material 2 is extended through the drain material insertion port 17 (FIG. 1) of the connector 10, and the bent portions 1 a of the pair of vertical drain materials 1 in each row are connected to each other by the horizontal drain material 2. Then, when the connection between the rows by the horizontal drain material 1 is finished, the opening / closing lid 12 of each connector body 11 is closed via the engaging means 14. Then, in each connecting tool 10, the bent portions 1a of the pair of vertical drain members 1 and the single horizontal drain member 2 are crossed and restrained in close contact with each other.

  According to the first embodiment, the bent portion 1a of the pair of vertical drain members 1 and the horizontal drain member 2 are connected in the main connector 10, so that the soft ground G taken in each vertical drain member 1 is connected. The interstitial water in the interior smoothly moves from the vertical drain material 1 to the horizontal drain material 2, and is drained to a drainage groove provided around the ground improvement area, for example. On the other hand, the consolidation of the soft ground G progresses due to this drainage, and the ground surface may be deformed, but each drain material 1, 2 is pressed into the connector main body 11 by the opening / closing lid 12, The bent portion 1a of the vertical drain material 1 is not separated from the horizontal drain material 2, and the drainage function is stably maintained. In addition, since the insertion of the bent portion 1a of the vertical drain material 1 and the insertion of the horizontal drain material 2 are performed with the open / close lid 12 of the connection tool body 11 open, the connection work by the connection tool 10 is simple. Moreover, since the opening / closing lid 12 can be closed with a single touch via the engaging means 14, the work can be performed efficiently.

  In the first embodiment, the bent portions 1a of the pair of adjacent vertical drain members 1 are inserted into the connecting device 10 so as to overlap each other. You may make it insert the bending part 1a in the connection tool 10 each independently. However, in this case, since it is necessary to reduce the height of the inner cross section of the connection tool 10, the connection tool body 11 is bent from the fold line 18, and the opening 16 on the back side is selected to be the fastener. I will enroll 15.

  6 to 8 show a second embodiment of the drain material placing method. In the second embodiment, after the vertical drain members 1 are placed in a row at a predetermined pitch in the soft ground G, the extra length portions of the vertical drain members 1 are bent in the same direction. At this time, the extra length is sufficiently long so that it can be overlapped with the bent portion 1a of the adjacent vertical drain material 1.

  Next, using the present connector 10, with the open / close lid 12 of the connector body 11 opened, first, the bent portion 1a of the vertical drain material 1 (1A) at the right end is inserted therein, and then this The second bent portion 1a of the vertical drain material 1B from the right is inserted in a state of being overlapped with the bent portion 1a. In this way, the bent portions 1a of the adjacent vertical drain materials 1 are inserted into the connecting tool 10 so as to overlap each other, and this operation is continued until the insertion of the leftmost vertical drain material 1E is completed. As a result, a series of horizontal drain portions 20 (20A) formed by connecting the bent portions 1a of the vertical drain members 1 through the connector 10 is completed. The connecting operation is performed in the same procedure, and the horizontal drain portions 20B and 20C are sequentially completed. 7 and 8, for convenience of explanation, the number of vertical drain members 1 to be placed in a row is five (1A to E), and the number of horizontal drain portions 20 is three (20A to C). However, it goes without saying that the number and the number of columns are arbitrary.

  Thereafter, the drain material insertion port 17 provided in the connector body 11 of the connector 10 is inserted to extend the horizontal drain material 2, and the horizontal drain material 2 allows the horizontal drain portions 20A, 20B, 20C of each row to be connected. They are connected to each other like a nutwork. At this time, the open / close lid 12 of the connector main body 11 is maintained in an open state, and thereby the horizontal drain member 2 can be easily inserted. Then, when the connection of the horizontal drain portions 20A, 20B, and 20C in each row by the horizontal drain material 1 is finished, the open / close lid 12 of each connector body 11 is closed via the engaging means 14. Then, in each connecting tool 10, the bent portions 1 a of the two vertical drain members 1 and the one horizontal drain member 2 are crossed and restrained in close contact with each other.

  According to the second embodiment described above, the bent portions 1 a of the vertical drain material 1 are overlapped with each other in the main connection tool 10 to form the horizontal drain part 20, and the horizontal drain part 20 is also used in the main connection tool 10. Since the horizontal drain material 2 superimposed on the bent portion 1a is connected in a network shape, the pore water in the soft ground G taken into each vertical drain material 1 is transferred from the vertical drain material 1 to the horizontal drain portion 20 and the horizontal drain. It moves smoothly to the material 2 and is efficiently drained into drainage grooves provided around the ground improvement zone, for example.

  In each of the above embodiments, as the vertical drain material 1 and the horizontal drain material 2, a plastic board drain material in which a corrugated core material 3 made of a three-dimensional network structure is covered with a porous skin 4 is used. Does not limit the grade of this drain material, and as the vertical drain material 1, a more flexible fiber drain material or paper drain material can be selected, and as the horizontal drain material 2, a more rigid material can be selected. A high drain material can be selected.

Here, the connector 10 according to the present invention is, for example, as shown in FIG. 9, a notch that divides the opening / closing lid 12 in the longitudinal direction by a cutting line 21 and opens the drain material insertion port 17 to the door stop 13. 22 may be provided. With such a structure, the opening / closing lid 12 can be opened and closed more easily, and the horizontal drain material 2 can be easily inserted into the drain material insertion port 17, thereby further improving the connection workability.
The open / close lid 12 of the connector 10 may have a structure in which a flat plate portion of one surface of the connector main body 11 is divided into two at an intermediate portion in the width direction so as to fit in a double-spread type. In this case, the broken line on both sides becomes the hinge 12a, and the door stop 13 is connected to either end edge of the left and right division elements.

It is a perspective view which shows the structure of the connection tool of the drain material which concerns on this invention. It is a perspective view which shows the structure of the engaging means in this connector. It is sectional drawing which shows the usage condition of this connector. It is sectional drawing which shows 1st Embodiment of the placement construction method of the drain material performed using this connector. It is a top view which shows 1st Embodiment of the construction method of the drain material performed using this connector. It is sectional drawing which shows the other usage condition of this connector. It is sectional drawing which shows 2nd Embodiment of the placement construction method of the drain material performed using this connection tool. It is a top view which shows 2nd Embodiment of the placement construction method of the drain material performed using this connector. It is a perspective view which shows the other structure of the connection tool of the drain material which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 (1A-E) Vertical drain material 1a Bending part of vertical drain material 2 Horizontal drain material 10 Connection tool 11 Connection tool main body 12 Opening and closing lid 13 Door stop part 14 Engagement means 15 Fastening means (engagement means)
16 Opening (engaging means)
17 Drain material insertion port 20 (20A ~ C) Horizontal drain

Claims (7)

  A connecting body having a flat cylindrical shape having an inner cross-section capable of storing at least two drain materials stacked on top of each other, the connecting body having a flat plate portion on one side as an opening / closing lid, and closing the opening / closing lid A drainage material connecting device characterized by comprising engaging means for engaging with a position, and the connecting device main body having a drain material insertion port for allowing the drain material to be inserted on the left and right side surfaces thereof. .   The engaging means includes a clip projecting from a door contact portion with which an edge of the opening / closing lid abuts and an opening provided at an edge of the opening / closing lid, and the clip is attached to the opening / closing lid. The drain material connector according to claim 1, wherein the drain material connector is engaged with the opening in accordance with a closing operation.   3. The drain material connector according to claim 1, wherein the connector body is made of a transparent or translucent plastic.   A drain material placing method using the connection device according to any one of claims 1 to 3, wherein an extra length portion of a vertical drain material placed in a row in a soft ground is bent, and the bent portion Is inserted into the connecting device, and the bent portion of the vertical drain material and the horizontal drain material extended through the connecting device are overlapped and intersected in the connecting device, and the vertical drain of each row is formed by the horizontal drain material. A drain material placing method characterized by connecting materials to each other.   5. The drain material placing method according to claim 4, wherein a bent portion of the vertical drain material is inserted into a cylindrical shape of the connection tool, and the horizontal drain material is extended through the drain material insertion port.   6. The drain according to claim 5, wherein an extra length portion of the vertical drain material is bent in a direction in which adjacent drain materials face each other, and each bent portion is inserted in the connecting device. Material placement method. Fold the excess length of the vertical drain material in the same direction in each row, and insert the bent portions of the adjacent vertical drain materials into the connecting device, and bend each vertical drain material through the connecting device. 6. The drain material placing method according to claim 5, wherein the parts are connected to form a series of horizontal drain parts.

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