JP2013130039A - Quay wall reinforcing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quay wall reinforcing method with which a quay wall can be installed easily even in the case where a ground suitable for installing a drilling machine or the like is not present in front of the quay wall.SOLUTION: According to a method of drilling a quay wall G from a quay wall surface Gx and reinforcing the quay wall G through a hole formed by drilling, a first lock member 62 is fixed to the quay wall G, and a work table 61 in which a second lock member 63 is provided is disposed in such a manner that a proximal portion 61x is abutted to the quay wall surface Gx and that the second lock member 63 is positioned at the side of a distal portion 61y. The first lock member 62 and the second lock member 63 are connected by a connecting material 64.

Description

  The present invention relates to a construction method for reinforcing quay walls such as revetments, cuts, and embankments.

  Currently, there is a ground anchor method as one method for reinforcing the ground. This ground anchor method is a method to reinforce the ground by drilling the ground to form an anchor hole, injecting a grout material into the anchor hole, inserting a tensile material, and tensioning the tensile material. (For example, see Patent Document 1, Patent Document 2, etc.).

  In this ground anchor work, the grout material is injected by inserting an injection pipe through the hole of the anchor hole formed on the drilling start surface of the ground. The tensile material is also inserted from the hole of the anchor hole. Further, tension of the tensile material is performed by attaching a fixing material such as a nut to the tensile material at the hole of the anchor hole and tightening the fixing material.

  As described above, in ground anchor work, various operations are performed facing the hole hole of the anchor hole, and the state of the drilling start surface where the hole hole of the anchor hole is formed is difficult for the ground anchor work. It has a big effect. However, the drilling start surface is not necessarily a horizontal plane. For example, when quay walls such as revetments, cuts, and embankments are ground to be reinforced, a non-horizontal surface such as an inclined surface or a vertical surface is a drilling start surface.

  Thus, when the drilling start surface (construction surface) is a non-horizontal plane, a drilling machine or the like is installed on the ground (hereinafter also referred to as “working ground”) in front of the drilling start surface (non-horizontal plane). Then, after adjusting the position and angle of the hole drilling machine so as to be suitable for the hole drilling, the operation of the hole drilling is started.

  However, when the work ground is full of trees, or when the ground is present in water, a drilling machine or the like cannot be installed on the ground. Therefore, for example, when the ground to be reinforced is a revetment, a proposal to assemble a frame from underwater, install a drilling machine etc. on this frame, and perform drilling, pouring, tensioning, etc. on the frame (For example, refer to Patent Document 3). In addition, proposals have been made to work from the back of the revetment rather than from the front of the revetment (see, for example, Patent Document 4). In this proposal, after excavating the sand and sand present on the back of the revetment as appropriate, the construction work on the back of the revetment and the revetment (sheet pile wall) are connected by a tensile material.

  However, the former method of assembling the gantry from the water is too inefficient. Moreover, the method of working from the back of the latter revetment can be applied only when there is a construction work.

Japanese Patent Laid-Open No. 9-21129 JP 2000-303480 A Japanese Patent Publication No. 5-59215 Japanese Patent Publication No. 3-40169

  SUMMARY OF THE INVENTION The main problem to be solved by the invention is to provide a quay reinforcement method that can easily reinforce the quay even when there is no ground suitable for installing a drilling machine or the like in front of the quay. .

The present invention for solving this problem is as follows.
[Invention of Claim 1]
A method of drilling a quay from a quay wall and reinforcing the quay through a hole formed by the drilling,
Fixing the first retaining member to the quay,
A workbench provided with a second hooking member is disposed so that the proximal part hits the quay wall surface and the second hooking member is located on the distal part side,
Connecting the first hooking member and the second hooking member with a connecting material;
A quay reinforcement method characterized by this.

[Invention of Claim 2]
Preparing a fixing auxiliary member provided with the first hooking member on the upper end side, fixing the lower end side of the fixing auxiliary member to the quay wall surface;
Connecting the first hooking member and the second hooking member with the connecting member;
The quayside reinforcement method according to claim 1.

[Invention of Claim 3]
Using the hole drilling machine and placing the controller of the hole drilling machine on the work table, drilling the quay,
The quayside reinforcement method according to claim 1 or 2.

[Invention of Claim 4]
A main body portion arranged on the ground, a long member provided so as to be able to stand up and down on the main body portion, a base end portion fixed to the long member, and extending toward a distal end portion of the long member A first support shaft hole provided at a distal end portion of the elongate member, and a second support shaft hole provided at a distal end portion of the elongate member, and the elongate member. Disposing a support device on the quay where the axial directions of the prone center axis, the first support shaft hole and the second support shaft hole are parallel,
It has a bottom material on which the drilling machine can be placed, a top material facing the bottom material, and a connecting material that connects the top material and the bottom material, and protrudes from the top material on the top material A first connecting shaft hole having an axial direction parallel to the first support shaft hole, and a second connecting shaft having an axial direction parallel to the second support shaft hole. A bracket having a hole is inserted through the first support shaft hole and the first connecting shaft hole, and the second shaft member is inserted through the second support shaft hole and the second connection shaft hole. And attaching to the support device;
Placing the drilling machine on the bottom material,
The quayside reinforcement method according to any one of claims 1 to 3.

(Main effects)
For example, as shown in FIG. 8 (1), the quay wall (ground) G is drilled from the quay wall surface (drilling start surface) Gx, and the quay wall G is reinforced through the hole formed by this drilling. Then, the first latching member 62 is fixed to the quay G, and the work table 61 provided with the second latching member 63 is fixed to the proximal part 61x against the quay wall Gx and the second latching to the distal part 61y side. According to the construction method in which the member 63 is positioned and the first and second hooking members 62 and 63 are connected by the connecting member 64, it is not necessary to assemble the frame from underwater. Even when there is no ground suitable for installing a drilling machine or the like, the revetment G can be easily reinforced.

  Further, for example, as shown in (2) of FIG. 8, a fixing auxiliary member 65 having a first hooking member 62 on the upper end side is prepared, and the lower end side of the fixing auxiliary member 65 is fixed to the quay wall surface Gx. According to the method of connecting the first and second hooking members 62 and 63 with the connecting member 64, the balance of the force applied to the quay G through the first hooking member 62 and the fixing auxiliary member 65 is Compared with the case where the first latching member 62 is directly fixed to G, the size becomes relatively lower and smaller to the side. Therefore, even if a large force is applied to the workbench 61, the quay wall reinforcement method does not cause the quay G to collapse.

  Furthermore, according to the construction method in which a drilling machine is used and the controller of the drilling machine is placed on the work table 61 to drill the quay G, the injection of grout material from the drilling hole and the tensile material It is possible to smoothly shift to operations such as insertion, and reinforcement work becomes easier.

  Moreover, as shown in FIG. 6, the main body part 11 arrange | positioned on the revetment G, the elongate member 20 provided in this main body part 11 so that elevation was possible, and the base end part 30a is provided in this elongate member 20. A telescopic member 30 that is fixed and extends toward the distal end portion of the long member 20, and a first support shaft hole (44x) is provided at the distal end portion of the long member 20, A second support shaft hole (44y) is provided at the distal end of the telescopic member 30, and the axial direction of the protrusive center shaft 20c, the first support shaft hole (44x), and the second support shaft hole (44y) of the long member 20 is provided. Are arranged on the quay G, a bottom member 42 on which the drilling machine 50 can be placed, a top member 41 facing the bottom member 42, the top member 41 and the bottom member And a projecting material 44 projecting from the top material 41 is provided on the top material 41. The projecting member 44 is formed with a first connection shaft hole 44x whose axial direction is parallel to the first support shaft hole, and a second connection shaft hole 44y whose axial direction is parallel to the second support shaft hole. The bracket 40 is inserted into the first support shaft hole and the first connection shaft hole 44x, and the second shaft material is inserted into the second support shaft hole and the second connection shaft hole 44y. As shown in FIG. 6, in front of the quay wall surface (drilling start surface) Gx, the process of attaching to the support device 10 and the process of placing the drilling machine 50 on the bottom member 42 of the brat 40 are included. Drilling or the like can be performed even when the drilling machine 50 or the like cannot be installed due to the sea, river, etc., and the working ground existing under the water W. Moreover, since the position and angle of the drilling machine 50 can be adjusted to suit the drilling using the support device 10, the drilling machine can be installed on the drilling start surface Gx very easily and accurately. It can be performed.

  According to the invention, even when there is no ground suitable for installing a drilling machine or the like in front of the quay, the quay wall reinforcement method can easily reinforce the quay.

It is a front view which shows the state before attaching a drilling machine to a backhoe using the bracket of this form. It is a front view which shows the state which attaches a drilling machine to a backhoe using the bracket of this form, and drills a seawall. It is a perspective view which shows the state which attached the fixed auxiliary material of this form to the revetment. It is a perspective view which shows the state which attached the worktable of this form to the revetment using the fixing auxiliary material of this form. It is explanatory drawing which shows the reinforcement process of a ground. It is a conceptual diagram of the drilling system of this form. It is explanatory drawing which shows the process of attaching the bracket of this form to a support apparatus. It is a conceptual diagram which shows the state which attached the worktable of this form to the revetment.

Next, the form for implementing this invention is demonstrated.
The drilling system of this form attaches a drilling machine to a support device using a bracket and drills a quay such as revetment, cutting, embankment, etc. Furthermore, by drilling using this system In this method, the grout material is injected into the formed hole, the tensile material is inserted, and the quay is reinforced by tensioning the tensile material. A quay is a quay that stands up like a wall, and includes not only revetments that face the sea and rivers, but also quays that are artificially formed by cutting, embankment, etc. However, in the following, a case where the revetment is a construction target will be described as an example.

  In the present invention, various devices can be used as the hole drilling machine support device, and a known heavy machine such as a backhoe can also be used. In this embodiment, as shown in FIG. 1, a backhoe 10M is used.

  The backhoe 10M can travel on the ground G. As shown in FIG. 2, the backhoe 10 </ b> M includes a main body 11 that is disposed on the revetment (ground) G and along the revetment surface (drilling start surface) Gx. The main body 11 has a caterpillar 11A serving as traveling means. On the caterpillar 11A, a swivel base 11C is provided to be rotatable about a swivel axis 11x. The swivel base 11C is equipped with a driver's seat 11B, hydraulic equipment (not shown), control equipment, and the like.

  A long member 20 is provided on the main body 11 so as to be freely prone. The long member 20 is configured by connecting a boom 21 on the proximal end side and an arm 22 on the distal end side. Although the long member 20 of this embodiment is configured by connecting two members, as shown conceptually in FIG. 6, even though it is configured by one member, three members are not shown in the figure. The above plurality of members may be connected to each other.

  The boom 21 has a bow shape that swells upward. The base end portion of the boom 21 is pivotally supported on the swivel base 11C via a horizontal rotation shaft (not shown) (see the protrusive center shaft 20c in FIG. 6). The boom 21 can be tilted up and down around the horizontal rotation axis. The boom 21 is lifted and lowered by an expansion / contraction operation of an expansion / contraction member 21X made of a cylinder or the like. The telescopic member 21 </ b> X is pivotally supported by the swivel base 11 </ b> C via a horizontal rotation shaft (not shown), and the distal end is pivotally supported by the central portion of the boom 21 via the horizontal rotation shaft 21 </ b> Xa.

  On the other hand, the arm 22 is linear. The arm 22 is pivotally supported on the distal end portion of the boom 21 via the horizontal rotation shaft 22a slightly on the center side from the base end portion. The arm 22 can be turned up and down around the horizontal rotation shaft 22a. The arm 22 is turned up and down by an expansion / contraction operation of an expansion / contraction member 22X made of a cylinder or the like. The telescopic member 22X has a base end portion pivotally supported at the center portion of the boom 21 via a horizontal rotation shaft 22Xb, and a distal end portion pivotally supported at the base end portion of the arm 22 via a horizontal rotation shaft 22Xa.

  The arm 22 is provided with a telescopic member 30 so as to be telescopic. The stretchable member 30 is configured by connecting a stretchable body portion 30X on the proximal end side, and a first link portion 30Y and a second link portion 30Z on the distal end side.

  The telescopic main body 30X is pivotally supported at the center side from the base end portion of the arm 22 via the horizontal rotation shaft 30b. A base end portion of the first link portion 30Y and a base end portion of the second link portion 30Z are pivotally supported at the distal end portion of the telescopic main body portion 30X via a horizontal rotation shaft 30Yb. The distal end portion of the second link portion 30Z is pivotally supported slightly more centrally than the distal end portion of the arm 22 via the horizontal rotation shaft 30Ya. The elastic member 30 is constrained by the second link portion 30Z so as to extend along the arm 22 toward the distal end side.

  A first support shaft hole 20 h is provided at the tip of the arm 22, that is, the tip of the long member 20. Further, a second support shaft hole 30h is provided at the distal end portion of the first link portion 30Y, that is, the distal end portion of the expandable member 30. The axial directions of the first support shaft hole 20h and the second support shaft hole 30h are parallel to the base end portion of the boom 21, that is, the horizontal rotation shaft (the prone center shaft 20c) (not shown) of the base end portion of the long member 20. It is said that.

  In the known example, the first support shaft hole 20h and the second support shaft hole 30h of the backhoe 10M are used for mounting an excavator or the like. In this embodiment, the first support shaft hole 20h and the second support shaft hole 30h are used for mounting a bracket 40 described below. .

  The bracket 40 of this embodiment is a member for attaching the drilling machine 50 of the ground G to the backhoe 10M. The bracket 40 includes a bottom member 42 on which the hole drilling machine 50 can be placed, a top member 41 that faces the bottom member 42, and a connecting member 43 that connects the top member 41 and the bottom member 42.

  It is sufficient for the bottom material 42 to be able to mount and fix the drilling machine 50, and the formation method, planar shape, and the like are not particularly limited. The bottom member 42 is formed of, for example, a plate member, a plurality of frame members connected together, or a net member. The planar shape of the bottom member 42 is, for example, a square shape, a circular shape, a polygonal shape, or the like. However, from the viewpoint of facilitating the placement and operation of the hole drilling machine 50, it is preferable to connect the frame material including at least the frame material constituting the four pieces to form a square shape. The bottom material 42 is made of metal, for example.

  The top member 41 is sufficient if it can support the protruding member 44 described later, and the formation method, planar shape, and the like are not particularly limited. The top member 41 is formed by, for example, a plate member, a plurality of frame members connected, or a net member. The planar shape of the top member 41 is, for example, a square shape, a circular shape, a polygonal shape, or the like. However, from the viewpoint of facilitating placement and operation of the hole drilling machine 50, it is preferable to have a rectangular shape narrower than the bottom member 42. Further, from the viewpoint of protecting the drilling machine 50, the top member 41 is preferably formed of a plate material. The top member 41 is also made of metal, for example.

  The connecting member 43 only needs to be able to connect the top member 41 and the bottom member 42, and the formation method, planar shape, and the like are not particularly limited. The connecting member 42 is formed by, for example, a plate member, one or a plurality of rod-like frame members, or a net member. However, from the viewpoint of facilitating the placement and operation of the hole drilling machine 50, it is constituted by rod-shaped frame members that connect the four corners of the top member 41 and the four corners of the bottom member 42 as in the illustrated example. preferable. For example, the connecting member 41 is made of metal.

  On the top member 41, for example, a plate-like projecting member 44 that protrudes upward from the top member 41 is provided. The projecting member 44 includes a first connection shaft hole 44x whose axial direction is parallel to the first support shaft hole 20h of the backhoe 10M, and a second connection shaft hole 30h of the backhoe 10M whose axial direction is parallel to the first support shaft hole 20h. Two connecting shaft holes 44y are formed. Using these connecting shaft holes 44x and 44y, the bracket 40 of this embodiment is attached to the backhoe 10M as described later. The protruding member 44 is also made of metal, for example.

The shape and number of the projecting members 44 are not particularly limited, and it is sufficient if the bracket 40 can be attached to the backhoe 10M. However, in this embodiment, the following configuration is adopted for reasons such as easy attachment.
That is, as shown in FIG. 7 (1), the protruding member 44 of this embodiment is composed of a pair of parallel plates, that is, two plate members. When the bracket 40 is attached to the backhoe 10M, the pair of protruding members 44 are located on both sides of the distal end portion of the long member 20 and the distal end portion of the telescopic member 30 of the backhoe 10M. That is, the distal end portion of the long member 20 and the distal end portion of the expandable member 30 are sandwiched. According to this configuration, since the attaching operation can be performed only by positioning the distal end portion of the long member 20 and the distal end portion of the elastic member 30 between the pair of projecting members 44, the working efficiency is excellent.

  The pair of projecting members 44 are provided with a first convex portion 45x projecting from the peripheral portion of the first connecting shaft hole 44x and a second convex portion 45y projecting from the peripheral portion of the second connecting shaft hole 44y. . The shapes of the first and second convex portions 45x and 45y are not particularly limited, but are preferably tubular as in the illustrated example. In particular, in the illustrated example, the first connecting shaft hole 44x and the second connecting shaft hole 44y are circular, and the first convex portion 45x and the second convex portion 45y are circular.

  The first convex portion 45x and the second convex portion 45y can be provided only on either the inner side or the outer side of the pair of projecting members 44, but both the inner side and the outer side as in the illustrated example. It is preferable to provide it.

  The first convex portion 45x is formed with a first fixing hole 46x that is orthogonal to the axial direction of the first connecting shaft hole 44x and also orthogonal to the axial direction of the first convex portion 45x. The second convex portion 45y is formed with a second fixing hole 46y that is orthogonal to the axial direction of the second connecting shaft hole 44y and that is also orthogonal to the axial direction of the second convex portion 45y. The functions of the first fixing hole 46x and the second fixing hole 46y will be described later.

  The hole drilling machine 50 of this embodiment includes a guide cell 51 placed on the bottom member 42 of the bracket 40 and a hammer drifter 52 that moves back and forth along the guide cell 51. The hammer drifter 52 is engaged with, for example, a chain (not shown) provided along the longitudinal direction of the guide cell 51. The chain is rotated by a rotation drive source such as a feed motor (not shown), so that the hammer drifter 52 moves forward and backward along the guide cell 51. The mechanism for moving the hammer drifter 52 back and forth is not limited to a mechanism using a chain and a feed motor, and is not particularly shown, but can be realized by a mechanism using a telescopic cylinder or the like, for example.

  The hammer drifter 52 is equipped with a drilling rod 70 such as a double tube drilling rod having a bit 70A attached to the tip. For example, rotational force or striking force is applied to the drilling rod 70 by a hammer drifter 52 using air, hydraulic pressure, electric power or the like as a drive source.

  When attaching the hole drilling machine 50 to the above-described backhoe 10M, for example, as shown in FIG. 1, the bracket 40 is placed on the ground G so that the bottom member 42 is on the lower side. Further, the hole drilling machine 50 is placed so that the guide cell 51 is on the lower side and faces the bottom member 42 of the bracket 40. In this state, the hole drilling machine 50 is located between the top member 41 and the bottom member 42 of the bracket 40.

  On the other hand, the backhoe 10M is disposed in the vicinity of the bracket 40 with or after these operations. At this time, for example, using the movement by the caterpillar 11A and the turning of the turntable 11C, as shown in FIG. 7A, the first support shaft hole 20h, the second support shaft hole 30h, the first connecting shaft The axial direction of the hole 44x and the second connecting shaft hole 44y is in a parallel state.

  In this state, the telescopic members 21X, 22X, and 30X included in the long member 20 (the boom 21 and the arm 22) are appropriately expanded and contracted, and as shown in FIG. The connection shaft hole 44x, the second support shaft hole 30h, and the second connection shaft hole 44y are brought into a communication state.

  However, in this embodiment, a tubular first convex portion 45x protruding from the peripheral portion of the first connecting shaft hole 44x and a circular second convex portion 45y protruding from the peripheral portion of the second connecting shaft hole 44y are provided. The protrusions 44 are provided so as to protrude inward from both the protrusions 44. Therefore, the first support shaft hole 20h communicates with the first connection shaft hole 44x via the first convex member 45x, and the second support shaft hole 30h communicates with the second connection shaft hole 44y via the second convex member 45y. Communicated with.

  Next, as shown in (3) of FIG. 7, the first shaft member 47x is inserted through the first support shaft hole 20h and the first connection shaft hole 44x. Similarly, the second shaft member 47y is inserted through the second support shaft hole 30h and the second connection shaft hole 44y. With these insertions, the bracket 40 is attached to the backhoe 10M.

  Here, in particular, the first shaft member 47x of the present embodiment has a cylindrical shape, and as shown in (2) of FIG. 7, the first fixed receiving hole 48x orthogonal to the axial direction, and the first shaft member. A first rotation hole 49x that rotates the shaft 47x around the axis is provided. Similarly, the second shaft member 47y has a cylindrical shape, and is provided with a second fixed receiving hole 48y orthogonal to the axial direction and a second rotation hole 49y that rotates the second shaft member 47y around the axis. It has been.

  As shown in (3) of FIG. 7, the first fixed receiving hole 48x can communicate with the first fixed hole 46x of the first convex portion 45x. Accordingly, by inserting an appropriate member such as a pin into the first fixed hole 46x and the first fixed receiving hole 48x, the first shaft member 47x is prevented from coming off. Further, the second fixed receiving hole 48y can communicate with the second fixed hole 46y of the second convex portion 45y. Accordingly, by inserting an appropriate member such as a pin into the second fixed hole 46y and the second fixed receiving hole 48y, the second shaft member 47y is prevented from coming off. Further, by preventing the first shaft member 47x and the second shaft member 47y from coming off in this way, there is no possibility that the bracket 40 is unintentionally detached from the backhoe 10M.

  In order to bring the first fixed hole 46x and the first fixed receiving hole 48x into a communication state, it may be necessary to rotate the first shaft member 47x around the axis by an appropriate rotating means. Similarly, when the second fixed hole 46y and the second fixed receiving hole 48y are brought into communication, it may be necessary to rotate the second shaft member 47y around the axis by an appropriate rotating means. The means for rotating the first shaft member 47x and the second shaft member 47y is not particularly limited, but in the present embodiment, it can be performed using the first rotation hole 49x and the second rotation hole 49y.

  That is, the first rotation hole 49x of the first shaft member 47x is located at a position protruding outward in the axial direction from the first protrusion 45x in a state where the first shaft member 47x is inserted into the first support shaft hole 20h or the like. Is formed. Therefore, by inserting a rod-shaped member or the like into the first rotation hole 49x and rotating the first shaft member 47x around the axis using the rod-shaped member or the like, the first fixing hole 46x and the first fixing hole 46x can be very easily made. The fixed receiving hole 48x can be in a communicating state. Similarly, the second rotation hole 49y of the second shaft member 47y protrudes outward in the axial direction from the second convex portion 45y in a state where the second shaft member 47y is inserted into the second support shaft hole 30h or the like. It is formed in the position to do. Therefore, by inserting a rod-shaped member or the like into the second rotation hole 49y and using the rod-shaped member or the like to rotate the second shaft member 47y around the axis, the second fixing hole 46y and the second fixing hole 46y The fixed receiving hole 48y can be in a communicating state.

  As described above, the drilling machine 50 is supported by the backhoe 10M by attaching the bracket 40 to which the drilling machine 50 is mounted to the backhoe 10M. The backhoe 10M that supports the drilling machine 50 moves along the revetment surface (drilling start surface) Gx, for example, using the caterpillar 11A as shown in FIG. At this time, the backhoe 10M is positioned in parallel with the revetment surface Gx, and turns the swivel base 11C so that the boom 21 and the arm 22 are orthogonal to the revetment surface Gx. By the movement of the backhoe 10M and the turning of the swivel base 11C, the drilling machine 50 is overhanged from the drilling start surface (seawall surface) Gx.

  In this state, the telescopic members 21 </ b> X and 22 </ b> X are appropriately expanded and contracted, the boom 21 and the arm 22 are turned upside down, and the drilling machine 50 is positioned. Further, the drilling angle of the drilling machine 50 is adjusted by appropriately expanding and contracting the expandable member 30. The drilling angle can be, for example, 30 to 60 °.

  When the positioning or angle adjustment of the drilling machine 50 is completed, the hammer drifter 52 to which the drilling rod 70 is attached is advanced along the guide cell 51, and the revetment G is drilled by the drilling rod 70. it can.

  However, in this embodiment, it is assumed that a grout material is injected into a hole formed by drilling, a tensile material is inserted, and the revetment G is reinforced by tensioning the tensile material. Therefore, it is preferable to install the work table 61 as shown in FIG. 2 before and after the above-described drilling machine 50 is installed.

  In installing the work table 61, first, as shown in FIG. 3, the fixing auxiliary material 65 is fixed to the revetment surface Gx. The fixing auxiliary member 65 is formed of a shape steel such as an H-shaped steel, an I-shaped steel, an angle steel, or a grooved steel. In the illustrated example, it is formed of channel steel. As for this fixing auxiliary material 65, the lower end part side 65x is fixed to the revetment surface Gx. This fixing can be realized, for example, by driving an appropriate number of, for example, two bolts 65v in the illustrated example to the revetment surface Gx via the fixing auxiliary member 65. The length Lx of the lower end side 65x of the fixing auxiliary member 65 is set to 100 to 200 cm, for example. The lower end portion of the fixing auxiliary member 65 may exist in the water W, but it is preferable that the fixing auxiliary member 65 does not reach the water surface.

  The upper end portion side 65y of the fixing auxiliary member 65 projects upward from the upper end edge of the revetment surface Gx. A first hooking member 62 to which connecting members 64R and 64L described later are connected is provided on the upper end portion side 65y of the fixing auxiliary member 65. The shape and the like of the first hooking member 62 are not particularly limited, and it is sufficient if the connecting members 64R and 64L can be connected. In the example of illustration, this 1st latching member 62 is made into ring shape.

  The length Ly of the upper end portion side 65y of the fixing auxiliary member 65 is not particularly limited, but is preferably 50 to 100 cm, for example.

  Two or more fixing auxiliary members 65 are fixed at an appropriate interval Lz along the extending direction of the revetment surface Gx, for example, at an interval of 100 to 300 cm. Each fixing auxiliary member 65 is arranged so as to be parallel to the other fixing auxiliary members 65.

  Next, as shown in FIG. The shape or the like of the work table 61 is not particularly limited, and is constituted by a rectangular plate material in the illustrated example. It is sufficient that the work table 61 has a width, strength, and the like that can perform various operations for reinforcing the revetment G on this, and the width is not particularly limited. In the example of illustration, it is set as the width extended to the both sides of a pair of mutually adjacent fixing auxiliary material 65 at the time of installation.

  The work table 61 may be provided with a fence 69 extending upward from the work table 61 if necessary. In the illustrated example, the fence 69 is provided along three sides other than the revetment surface Gx side. The presence of the fence 69 prevents a worker who performs a reinforcement work of the revetment G on the work table 61 from being accidentally dropped.

  The work table 61 is installed above the water W so that the proximal portion 61x directly or indirectly contacts the revetment surface Gx. In the illustrated example, the work table 61 is installed so as to directly abut against the revetment surface Gx via the pad 61z.

  The batting material 61z can be formed of a shape steel such as an H-shaped steel, an I-shaped steel, an angle steel, and a grooved steel, for example, similarly to the fixing auxiliary material 65. In the illustrated example, the fixing auxiliary material 65 is formed of a grooved steel made shorter. The pad 61z extends to a position higher than the work table 61. Moreover, the said contact material 61z is being fixed to the revetment surface Gx side both ends of the work bench | platform 61. FIG.

  The vertical length Lw of the pad 61z is not particularly limited, but is preferably 30 to 100 cm, for example. As described above, the work table 61 can be configured such that only the distal portion 61y side of the work table 61 is suspended by the connecting materials 64R and 64L, as will be described later, by setting the contact material 61z to have a certain length in the vertical direction. There is no possibility that the proximal portion 61x side will fall down and work efficiency will be improved.

  At both ends of the work table 61 on the distal portion 61y side, second latching members 63y to which connecting members 64R and 64L are connected are provided. The shape or the like of the second hooking member 63y is not particularly limited as long as the connecting members 64R and 64L can be connected. In the illustrated example, the second hooking member 63 y has a ring shape like the first hooking member 62. The first hook member 62 and the second hook member 63y may have different shapes.

  One of the second hooking members 63y (the second hooking member 63y on the right side of the drawing) is connected to the first hooking member 62 provided on one of a pair of fixing auxiliary members 65 adjacent to each other by a connecting member 64R. ing. Similarly, the other of the second hooking members 63y (the second hooking member 63y on the left side of the sheet) is the first hooking member 62 provided on the other of the pair of fixing auxiliary members 65 adjacent to each other and the connecting member 64L. Are connected by By these two connections, a work table 61 is installed in front of the revetment G. In addition, the distance from the water W may be appropriately adjusted by appropriately adjusting the length of the connecting members 64R and 64L, the length of the fixing auxiliary member 65, the fixing position, the installation height of the first hooking member 62, and the like. it can.

  According to the installation method of the work table 61 described above, since it is not necessary to assemble a frame from underwater, drilling can be easily performed even when there is no ground suitable for installing a drilling machine or the like before the revetment G. Etc. can be performed. In addition, since the work height (position) can be easily changed only by adjusting the lengths of the connecting members 64R and 64L, work such as drilling can be easily started from a desired position.

  In the present embodiment, the types of the connecting materials 64R and 64L are not particularly limited, and for example, a wire, a churn, a bar, or the like can be used.

  In the present embodiment, the work table 61 is configured to abut against the revetment surface Gx through a vertically long pad 61z, and the proximal portion 61x side of the work table 61 is prevented from falling downward. However, as shown in FIG. 2, in the case where the controller 59 of the drilling machine 50 is installed on the work table 61, the following configuration is also employed in preparation for the case where the installation object is heavy.

  That is, first, as shown in FIG. 4, a first auxiliary hooking member 62 a is provided below the first hooking member 62 of the fixing auxiliary material 65. Moreover, the 2nd auxiliary | assistant latching member 63x is provided in the both ends by the side of the proximal part 61x of the work bench | platform 61, respectively. Therefore, by connecting the first auxiliary hooking member 62a and the second auxiliary hooking member 63x with a connecting material (not shown), the proximal portion 61x side of the work table 61 is lowered even when the installation object is heavy. It is possible to reliably prevent depression. In addition, as a connection material used in this case, the thing similar to the above-mentioned connection material 64R and 64L can be used.

  Next, the reinforcing method of this embodiment will be described. In addition, below, the reinforcement construction method of the revetment (ground) G using a double pipe drilling method is demonstrated. However, other construction methods can be appropriately adopted or combined within a range not departing from the object of the present invention. Specifically, for example, as a drilling method, the method disclosed in Patent Document 1 improved from the single pipe drilling method or the double pipe drilling method can be adopted or combined.

  When the installation of the work table 61 and the installation of the drilling machine 50 using the backhoe 10M are completed, the drilling operation is started. In this drilling operation, as shown in FIG. 5 (1), a double tube drilling rod having a casing pipe 71 and an inner pipe 72 disposed coaxially inside the casing pipe 71 is used. And do it.

  An outer bit 71 </ b> A made of a ring bit, a metal crown, or the like is provided at the tip of the casing tube 71. Further, an inner bit 72B made of a button bit, a cross bit, or the like is provided at the distal end portion of the inner pipe 72. Accordingly, the double pipe drilling is performed while applying the rotational force around the axis and the striking force in the axial direction to the casing pipe 71 and the inner pipe 72 (hereinafter also simply referred to as “double pipe drill rod 70”). By propelling the rod 70, the revetment (ground) G can be drilled. This drilling can be performed while spraying drilling water as required. In addition, the rotational force and the striking force with respect to the double tube drilling rod 70 can be given using the hammer drifter 52 provided in the drilling machine 50.

  The double tube drilling rod 70 is constituted by adding unit tube rods depending on the drilling length or the like. However, the unit pipe rod is added by removing the unit pipe once connected to the hammer drifter 52 from the hammer drifter 52 and interposing another unit pipe rod between the hammer drifter 52 and the removed single pipe rod. Will be done by connecting to. Therefore, if there is no work ground before the revetment G, the work becomes extremely difficult. However, if the work table 61 is installed, it is possible to perform the work on the work table 61, which is preferable.

  When the unit tube rod is not added, the work table 61 can be installed after the drilling operation is completed. However, if the work table 61 is installed prior to the hole drilling operation, the controller 59 (see FIG. 2) of the hole drilling machine 50 can be installed on the work table 61, and the hole formed by the hole drilling can be removed. It is possible to smoothly shift to operations such as injection of a grout material and insertion of a tensile material. Therefore, if the work table 61 is installed prior to the drilling work, the entire reinforcement work for the revetment G can be smoothly advanced. In addition, the drilling length of the revetment G can be set to 5.0 to 50.0 m, for example.

  When the drilling operation of the revetment G is completed, the inner pipe 72 is pulled out from the casing pipe 71 using the drilling machine 50 or the like, as shown in FIG.

  When the inner pipe 72 is completely pulled out, a drilling length is inspected if necessary, and then an injection pipe (not shown) is inserted into the casing pipe 71. Then, a grout material (solidified material) M1 made of cement milk, mortar or the like is injected (filled) into the casing pipe 71 through the injection pipe as shown in FIG. This injection is performed so that the grout material M1 is filled up to the mouth (hole) of the casing tube 71. The grout material M1 overflowing from the mouth of the casing pipe 71 is appropriately sent to a sedimentation tank made of a large soot using a pump or the like. The sediment precipitated in this sedimentation tank is treated as industrial waste. On the other hand, water is drained after pH treatment.

  Next, as shown in (4) of FIG. 5, a tensile material 73 such as an anchor is inserted into the casing pipe 71 filled with the grout material M1. The tensile material 73 can be constituted by, for example, a steel wire, a steel strand, a steel bar, a deformed steel bar, or the like.

  The tension material 73 of this embodiment mainly includes a fixing length portion 73A on the front end side and a free length portion 73B on the rear end side. The fixing length portion 73A is a portion that is integrated (fixed) with the revetment (ground) G by an injection material M2 and the like that is then injected under pressure. On the other hand, the free length portion 73B is a portion that can move with respect to the revetment G, and is covered with an unbonded tube or the like (not shown) if necessary.

  When the insertion of the tension member 73 is completed, as shown in FIG. Until it is located at the leading edge (the base edge of the fixing length portion 73A).

  When this drawing is completed, a grout material (solidified material) M2 made of cement milk, mortar, or the like is pressurized and injected into the ground around the fixing portion 73A of the tensile material 73. This pressure injection is performed by separately inserting a pressure injection injection tube provided with a packer or the like in the casing tube 71, or by using a tensile material that is equipped with a packer, an injection pipe, or the like and also serves as a pressure injection means. It can be done using it. However, the grout material M2 is preferably injected using the same apparatus as the grout material M1, and the grout material M1 and the grout material M2 are preferably the same solidifying material.

  When the pressure injection of the grout material M2 is completed, the casing pipe 71 is pulled out by using a hole drilling machine 50 or the like, as shown in (6) of FIG.

  When the drawing of the casing tube 71 is completed, the grout material M1 is replenished in the hole formed by the drawing of the casing tube 71 as necessary. Then, curing is performed until the grout material M2 is cured and a predetermined strength is developed. By this curing, the fixing length portion 73A of the tensile material 73 and the ground G are integrated. In this curing, the drilling machine 50 can be moved to the next construction location using the backhoe 10M, and the drilling operation at the next construction location can be advanced.

  When the curing of the grout material M2 is completed, as shown in FIG. 5 (7), a fixing material 75 made of a bearing plate, a nut, or the like is formed at the base end portion of the tensile material 73 protruding from the hole of the drilling start surface Gx. Is attached, and the tension member 73 is tensioned. Thereby, the revetment G is reinforced. The fixing method of the tension material 73 is not particularly limited, and for example, a fixing method such as a wedge type or a nut type can be employed.

  In this embodiment, the grout material M2 is injected to fix the fixing portion 73A of the tensile material 73 to the revetment (ground) G. However, the present invention is not limited to this. Although not particularly illustrated, for example, a tensile material in which a member that mechanically opens the blade is provided at the tip can also be used. When using such a tension member, the tension member is inserted into the casing tube 71 in a state in which the blade member is closed, and then the casing tube 71 is pulled out and the blade member is opened. The tensile material can be fixed by biting into the ground G.

  The present invention can be applied as a construction method for reinforcing a quay wall such as revetment, cutting, embankment and the like.

  DESCRIPTION OF SYMBOLS 10 ... Support apparatus, 10M ... Backhoe, 11 ... Main part, 11A ... Caterpillar, 11B ... Driver's seat, 11C ... Swing stand, 11x ... Vertical axis, 20 ... Long member, 20c ... Protrusion center axis, 20h ... First Support shaft hole, 21 ... boom, 21X ... telescopic member, 21Xa ... horizontal rotating shaft, 22 ... arm, 22a ... horizontal rotating shaft, 22X ... telescopic member, 22Xa, 22Xb ... horizontal rotating shaft, 30 ... telescopic member, 30a ... base End part, 30b ... Horizontal rotation axis, 30h ... Second support shaft hole, 30X ... Extensible body part, 30Y ... First link part, 30Ya, 30Yb ... Horizontal rotation axis, 30Z ... Second link part, 40 ... Bracket, 41 ... Top material, 42 ... Bottom material, 43 ... Connection material, 44 ... Projection material, 44x ... First connection shaft hole, 44y ... Second connection shaft hole, 45x ... First projection, 45y ... Second projection, 46x ... first fixing hole, 46y ... second Fixed hole, 47x ... first shaft member, 47y ... second shaft member, 48x ... first fixed receiving hole, 48y ... second fixed receiving hole, 49x ... first rotating hole, 49y ... second rotating hole, 50 ... cutting Hole machine 51 ... Guide cell 52 ... Hammer drifter 59 ... Controller 61 ... Workbench 61x ... Proximal part 61y ... Distal part 61z ... Heat material 62 ... First latch member 63 ... Second latch member, 64 ... connecting material, 65 ... fixing auxiliary material, 65X ... lower end side, 65Y ... upper end side, 70 ... rod, 70A ... bit, 71 ... casing pipe, 72 ... inner pipe, 73 ... tension 73A ... fixing length, 74A ... free length, G ... ground (revetment), Gx ... drilling start surface (revetment).

Claims (4)

A method of drilling a quay from a quay wall and reinforcing the quay through a hole formed by the drilling,
Fixing the first retaining member to the quay,
A workbench provided with a second hooking member is disposed so that the proximal part hits the quay wall surface and the second hooking member is located on the distal part side,
Connecting the first hooking member and the second hooking member with a connecting material;
A quay reinforcement method characterized by this. Preparing a fixing auxiliary member provided with the first hooking member on the upper end side, fixing the lower end side of the fixing auxiliary member to the quay wall surface;
Connecting the first hooking member and the second hooking member with the connecting member;
The quayside reinforcement method according to claim 1. Using the hole drilling machine and placing the controller of the hole drilling machine on the work table, drilling the quay,
The quayside reinforcement method according to claim 1 or 2. A main body portion arranged on the ground, a long member provided so as to be able to stand up and down on the main body portion, a base end portion fixed to the long member, and extending toward a distal end portion of the long member A first support shaft hole provided at a distal end portion of the elongate member, and a second support shaft hole provided at a distal end portion of the elongate member, and the elongate member. Disposing a support device on the quay where the axial directions of the prone center axis, the first support shaft hole and the second support shaft hole are parallel,
It has a bottom material on which the drilling machine can be placed, a top material facing the bottom material, and a connecting material that connects the top material and the bottom material, and protrudes from the top material on the top material A first connecting shaft hole having an axial direction parallel to the first support shaft hole, and a second connecting shaft having an axial direction parallel to the second support shaft hole. A bracket having a hole is inserted through the first support shaft hole and the first connecting shaft hole, and the second shaft member is inserted through the second support shaft hole and the second connection shaft hole. And attaching to the support device;
Placing the drilling machine on the bottom material,
The quayside reinforcement method according to any one of claims 1 to 3.

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