JP2017222982A - Pile guide and pile driving method - Google Patents

Abstract

An object of the present invention is to provide a pile guide and a pile driving method that reduce the labor required to install the pile guide in the underwater ground while maintaining the accuracy of driving the pile into the underwater ground. [Solution] A guide pile 2 of a pile guide 1A is driven into the underwater ground G, and the pile is guided by a guide frame 6a provided at the other end 5 of a guide arm 3a whose one end 4 is attached to the guide pile 2. Drive a pile into the ground G, rotate the other end 5 of the guide arm 3a around the guide pile 2 with the guide frame 6a as the central axis, and then attach the following to the guide frame 6a provided at the other end 5 of the guide arm 3a. Drive the next pile into the underwater ground G while guiding the pile. There is no need to drive a pile guide such as H steel into the underwater ground G for each pile driven into the underwater ground G. [Selection diagram] Figure 1

Description

  The present invention relates to a pile guide and a pile driving method.

  In order to construct a foundation such as a bridge girder on the bottom of the ground, pile guides and pile driving methods for driving piles such as steel sheet piles and steel pipe sheet piles to the bottom of the ground have been proposed. For example, Patent Literature 1 discloses a method of constructing a steel pipe sheet pile cannula foundation by driving a pile guide of H steel into the water bottom ground for each steel pipe sheet pile driven into the water bottom ground, driving a steel pipe sheet pile along the pile guide. Yes.

Japanese Patent Laid-Open No. 2001-214612

  By the way, a great deal of labor is required for the process of accurately driving a pile guide such as H steel into the water bottom ground for each pile driven into the water bottom ground. Therefore, it is desired to reduce the labor for installing the pile guide on the submarine ground while maintaining the accuracy of driving the pile into the submarine ground.

  Then, this invention aims at providing the pile guide and the pile placing method which can reduce the effort which installs a pile guide in a bottom bottom ground, maintaining the precision which drives a pile into a bottom bottom ground.

  The present invention includes a guide pile driven into a submarine ground, one end of the guide pile attached to the guide pile, the other end of which is rotatable around the guide pile around the guide pile, and the other end of the guide arm. It is a pile guide provided with a guide frame that is provided and guides a pile driven into the water bottom ground.

  According to this configuration, the guide pile is driven into the submarine ground, and the pile is driven into the submarine ground while guiding the pile to the guide frame provided at the other end of the guide arm attached to the guide pile at one end. After rotating the other end of the guide arm as the central axis around the guide pile, the next pile can be driven into the water bottom ground while guiding the next pile to the guide frame provided at the other end of the guide arm. It is not necessary to drive a pile guide such as H steel into the water bottom ground for every pile driven into the water bottom ground. Moreover, the pile driven into the water bottom ground can be accurately guided by the guide arm having the guide pile as the central axis of rotation. For this reason, the labor which installs a pile guide in a submarine ground can be reduced, maintaining the precision which drives a pile into a submarine ground.

  In this case, it is preferable that the guide arm has a support member that supports the guide arm while being in contact with the water bottom ground.

  According to this configuration, since the guide arm is supported by the support member that supports the guide arm while being in contact with the water bottom ground, it is more reliably supported on the water bottom ground.

  In this case, it is preferable that the support member has a support member expansion / contraction mechanism that adjusts the support member so as to expand and contract according to the distance between the water bottom ground and the guide arm.

  According to this configuration, the support member expansion / contraction mechanism adjusts the support member so that it can freely expand / contract according to the distance between the water bottom ground and the guide arm. Therefore, the distance between the water bottom ground and the guide arm due to the undulation of the water bottom ground, etc. The guide arm can be supported while responding to fluctuations.

  In addition, the guide arm preferably has a float member that supports the guide arm by buoyancy from water above the bottom ground.

  According to this configuration, the guide arm is supported by the float member that supports the guide arm by the buoyancy from the water above the water bottom ground, and thus is more reliably supported on the water bottom ground.

  In this case, it is preferable that the float member has a float member position adjustment mechanism that adjusts the position of the float member relative to the water surface in accordance with the distance between the water surface and the guide arm.

  According to this configuration, the float member position adjusting mechanism adjusts the position of the float member with respect to the water surface according to the distance between the water surface of the water and the guide arm. It is possible to support the guide arm while responding to fluctuations in the distance.

  Moreover, it is preferable that the float member includes a buoyancy adjustment mechanism that adjusts buoyancy from water in a changeable manner.

  According to this configuration, the buoyancy adjustment mechanism allows the float member to be adjusted so that the buoyancy from the water can be changed, so that it can respond to fluctuations in the distance between the water surface and the guide arm due to tides, etc. However, the guide arm can be supported.

  Further, it is preferable that the guide frames are respectively provided at the same position in a plan view and at a plurality of positions in a side view.

  According to this configuration, since the guide frames are respectively provided at the same position in plan view and at a plurality of positions in side view, the pile driven into the water bottom ground can be guided vertically with higher accuracy.

  Moreover, it is suitable for a guide arm to have a guide arm expansion-contraction mechanism which changes the distance of a guide pile and a guide frame so that expansion-contraction is possible.

  According to this configuration, since the distance between the guide pile and the guide frame is telescopically changed in the guide arm by the guide arm expansion / contraction mechanism, the pile can be driven into an arbitrary position from the guide pile. Further, since the position of the pile driven into the water bottom ground can be adjusted by the guide arm extension mechanism, there is an advantage that the accuracy of driving the guide pile into the water bottom ground may be relatively low.

  Further, the present invention is a pile driving method for driving a pile using the pile guide of the present invention, and a guide pile driving process for driving the guide pile into the submarine ground, and a guide pile after the guide pile driving process. Is a pile driving method including a pile driving step of driving a pile into the bottom floor ground while guiding.

  Further, the present invention is a pile driving method for driving a pile using a pile guide having the guide arm expansion and contraction mechanism of the present invention, and a guide pile driving step of driving the guide pile into the water bottom ground, and around the guide pile Driving around the guide pile according to the relative position of the pile to be set in the driving pile position setting process and the setting position of the driving pile to set the relative position of the driven pile to the guide pile Guide that sets the rotation angle of the guide frame around the guide pile from any reference direction and the distance between the guide pile and the guide frame so that the position of the pile coincides with the position where the guide frame guides the pile A frame setting step, a guide frame fixing step for fixing the guide frame to the rotation angle and distance set in the guide frame setting step, and a pile on the water bottom ground while guiding the pile to the guide frame fixed in the guide frame fixing step. Pile pile A Kuida 設方 method and a set process.

  According to this configuration, the guide pile is driven into the water bottom ground by the guide pile placing process, and the relative position of the pile driven around the guide pile with respect to the guide pile is set by the placing pile position setting process. The position of the pile driven around the guide pile matches the position where the guide frame guides the pile according to the relative position of the pile with respect to the guide pile set in the placing pile position setting process by the frame setting process. As described above, the rotation angle of the guide frame around the guide pile from any reference direction and the distance between the guide pile and the guide frame are set, and the rotation angle set in the guide frame setting process by the guide frame fixing process The guide frame is fixed to the distance, and the pile is driven into the submarine ground while the pile is guided to the guide frame fixed in the guide frame fixing process by the pile driving process. As a result, the pile can be driven into a relatively accurate position with respect to the guide pile.

  In this case, a guide pile position measuring process for measuring the position of the guide pile is further provided after the guide pile placing process. In the placing pile position setting process, the pile of the pile with respect to the guide pile position measured in the guide pile position measuring process is provided. It is preferable to set the relative position.

  According to this configuration, after the guide pile placing process, the position of the guide pile is measured by the guide pile position measuring process. In the placing pile position setting process, the position of the guide pile measured by the guide pile position measuring process is measured. Since the relative position of the pile is set, the pile can be driven into an absolutely accurate position. In addition, since the error in the position of the guide pile driven by the guide pile placing process can be corrected by the placing pile position setting process, the accuracy of driving the guide pile into the water bottom ground in the guide pile placing process is relatively low. There are good benefits.

  In the placing pile position setting process, the relative positions of the piles in which the plurality of piles are continuous in a plan view with respect to the respective guide piles are set. In the pile placing process, the steel sheet pile and the steel pipe are placed on the water bottom ground. It is preferable to drive a pile that is one of the sheet piles.

  According to this configuration, it is possible to construct a steel sheet pile canopy foundation or a steel pipe sheet pile canopy foundation while maintaining the accuracy of driving a steel sheet pile or steel pipe sheet pile into the water bottom ground and reducing the labor of installing the pile guide on the water bottom ground. it can.

  According to the pile guide and the pile placing method of the present invention, it is possible to reduce the labor for installing the pile guide on the water bottom ground while maintaining the accuracy of driving the pile into the water bottom ground.

(A) is a top view of the pile guide which concerns on embodiment, (B) is a side view of the pile guide which concerns on embodiment. It is a flowchart which shows the pile placing method which concerns on embodiment. It is a side view which shows the guide pile driven into the water bottom ground by the guide pile placing process. (A) is a top view of the steel pipe sheet pile driven in a pile driving process, (B) is a top view of the steel sheet pile driven in a pile driving process. It is a top view which shows the example of a placing pile position setting process, a guide frame setting process, a guide frame fixing process, and a pile placing process. It is a top view which shows the example of a placing pile position setting process, a guide frame setting process, a guide frame fixing process, and a pile placing process. It is a top view which shows the example of a placing pile position setting process, a guide frame setting process, a guide frame fixing process, and a pile placing process. It is a top view which shows the example of a placing pile position setting process, a guide frame setting process, a guide frame fixing process, and a pile placing process. It is a side view which shows the steel pipe sheet pile driven into the water bottom ground by the pile placing process.

  Hereinafter, a pile guide and a pile placing method according to an embodiment of the present invention will be described in detail with reference to the drawings. The pile guide of this embodiment is driven by piles such as steel sheet piles and steel pipe sheet piles in the bottom of the ground to build foundations such as bridge girders on the bottom of rivers, lakes, and seas. Used to build the foundation.

  As shown in FIGS. 1 (A) and 1 (B), the pile guide 1A of this embodiment includes a guide pile 2, guide arms 3a, 3b, and guide frames 6a, 6b as a whole. The guide pile 2 is driven into the water bottom ground G. Each of the guide arms 3a and 3b has one end 4 attached to the guide pile 2, and the other end 5 is rotatable around the guide pile 2 with the guide pile 2 as a central axis. Each of the guide frames 6a and 6b is provided at the other end 5 of each of the guide arms 3a and 3b, and guides a pile such as a steel pipe sheet pile 101a to be driven into the water bottom ground G.

  The pile guide 1A is provided with guide frames 6a and 6b at the same position in a plan view and at two positions in a side view. In addition, the pile guide 1A includes two guide arms 3a and 3b provided with guide frames 6a and 6b at the other end 5, respectively. The pile guide 1A of the present embodiment is a guide arm in which the guide frame 6a and the like are provided at the same position in a plan view and at three or more positions in a side view and the guide frame 6a and the like at the other end 5 3a etc. may be provided, respectively, and only one guide arm 3a provided with the guide frame 6a and the guide frame 6a at the other end 5 may be provided.

  Each of the guide arms 3a, 3b has a pair of guide arm extension / contraction mechanisms 11 that change the distance between the guide pile 2 and the guide frames 6a, 6b to be extendable. Moreover, the guide arms 3a and 3b have a support member 7 that supports the guide arms 3a and 3b while being in contact with the water bottom ground G. The support member 7 includes a pair of support member expansion / contraction mechanisms 8 that adjust the support member 7 so as to expand and contract according to the distance between the water bottom ground G and the guide arms 3a and 3b. The guide arms 3a and 3b do not have to have the support member 7.

  The guide arms 3a and 3b have two float members 9 that support the guide arms 3a and 3b by buoyancy from the water W above the bottom ground G. The float member 9 includes a support member expansion / contraction mechanism 8 that is a float member position adjustment mechanism that adjusts the position of the float member 9 relative to the water surface S according to the distance between the water surface S of the water W and the guide arms 3a and 3b. That is, in the pile guide 1A of the present embodiment, the support member expansion / contraction mechanism 8 also serves as a float member position adjustment mechanism. The support member expansion / contraction mechanism 8 and the float member position adjustment mechanism may be provided separately. The float member 9 includes a buoyancy adjustment mechanism 10 that adjusts the buoyancy from the water W in a freely changeable manner. In addition, the quantity of the float member 9 is arbitrary, and the guide arms 3a and 3b do not need to have the float member 9. Further, the float member 9 may not have the buoyancy adjustment mechanism 10.

  Hereinafter, each part of pile guide 1A of this embodiment is explained. The guide pile 2 has a ground insertion end 12 at its lower end. The guide pile 2 has the rotating shaft 13 to which each of the guide arms 3a and 3b was attached to the upper part. The rotary shaft 13 pivotally supports the respective ends 4 of the guide arms 3a and 3b at the upper part of the guide pile 2 so as to be rotatable around the central axis.

  The guide pile 2 has a rotation driving unit 14 in which an electric motor and a speed reducer are incorporated on its side surface. The rotation drive unit 14 rotates the motor pulley 15. A rotation shaft pulley 16 is attached to the rotation shaft 13. The motor pulley 15 and the rotary shaft pulley 16 are connected by a timing belt 17. When the rotation drive unit 14 rotates the motor pulley 15, the rotational force of the motor pulley 15 is transmitted to the rotary shaft pulley 16 via the timing belt 17. By controlling the rotation of the rotation drive unit 14 by an external control signal, the guide frames 6a and 6b attached to the other ends 5 of the guide arms 3a and 3b are the same with the guide pile 2 as the central axis. It can be rotated to any angle.

  The guide pile 2 has a GPS unit 18 with a built-in GPS (Global Positioning System) at its upper end. The GPS unit 18 measures the latitude and longitude of the center of the guide pile 2. In addition, when the position of the center of the guide pile 2 is measured by surveying by an operator or the like, the GPS unit 18 may be omitted.

  Each of the guide arms 3a and 3b has a telescoping structure built in the guide arms 3a and 3b, and has a guide arm extendable part 19 that can change the distance between the one end 4 and the other end 5 in an extendable manner. The guide arm expansion / contraction mechanism 11 includes a cylinder portion 20 attached to the side surfaces of the guide arms 3 a and 3 b and a piston portion 21 attached to the side surface of the guide arm expansion / contraction portion 19. When the cylinder part 20 and the piston part 21 expand and contract by hydraulic pressure or air pressure according to the control signal from the outside, the guide arm expansion / contraction mechanism 11 arbitrarily changes the distance between the guide pile 2 and the guide frames 6a and 6b. To do.

  Each of the guide frames 6a and 6b has a scaffold 22 for an operator on the opposite side of the other end 5 of the guide frames 6a and 6b. The scaffold 22 is not essential. Moreover, the guide frames 6a and 6b may have a GPS or the like for positioning positions such as latitude and longitude of the guide frames 6a and 6b as necessary.

  The support member 7 includes a ground contact surface portion 23 that contacts the water bottom ground G at its lower end. The support member 7 has a nested structure built in the support member 7, and the distance between the ground contact surface portion 23 and the guide arms 3a and 3b is set according to the distance between the water bottom ground G and the guide arms 3a and 3b. It has a support member expansion / contraction part 24 that can be expanded and contracted. The support member expansion / contraction mechanism 8 includes a cylinder portion 25 attached to the side surface of the support member 7 and a piston portion 26 attached to the side surface of the support member expansion / contraction portion 24. As the cylinder portion 25 and the piston portion 26 expand and contract by hydraulic pressure or air pressure according to an external control signal, the support member expansion / contraction mechanism 8 can arbitrarily set the distance between the ground contact surface portion 23 and the guide arms 3a and 3b. Change to

  Moreover, the support member expansion-contraction mechanism 8 arbitrarily adjusts the position of the float member 9 with respect to the water surface S according to the distance between the water surface S of the water W and the guide arms 3a and 3b. The position of the float member 9 relative to the water surface S may be located above the water surface S so as not to contact the water surface S, for example, if buoyancy by the float member 9 is not necessary. For example, the float member 9 may float on the water surface S or may sink below the water surface S. For example, by allowing the float member 9 to sink below the water surface S, the influence of waves on the water surface S can be reduced. The buoyancy adjusting mechanism 10 adjusts the buoyancy from the water W in a freely variable manner by pouring the water W into the float member 9 and draining the water W injected into the float member 9.

  In addition, the dimension and arrangement | positioning of each part of 1 A of pile guides demonstrated above are arbitrarily changed by the conditions, such as the water depth of the river which constructs a foundation, and the shape and magnitude | size of a foundation to construct. For example, the guide pile 2 may be comprised not only from the steel pipe pile but from the H steel pile. The H steel pile foundation which has a stage in the top end of four H steel piles is formed by the member which connects each of the top ends of the four H steel piles, and the stage of the H steel pile foundation is rotationally driven. A mechanism for rotating one rotating shaft 13 such as the portion 14, the motor pulley 15 and the rotating shaft pulley 16 may be provided, and the guide arms 3 a and 3 b and the guide frames 6 a and 6 b may be attached to the rotating shaft 13. .

  Hereinafter, the pile placing method of this embodiment will be described. As shown in FIG. 2, a guide pile placing step of driving the guide pile 2 of the pile guide 1A into the water bottom ground G is performed (S1). As shown in FIG. 3, the ground insertion end 12 of the guide pile 2 is driven into the water bottom ground G. The support member expansion / contraction mechanism 8 is driven so that the ground contact surface portion 23 of the support member 7 contacts the water bottom ground G and the float member 9 sinks below the water surface S as necessary. In the vicinity of the pile guide 1A, a crane 300 mounted on a fence 200 or the like is prepared. As will be described later, the accuracy of the position where the guide pile 2 is driven may not be strict.

  As shown to FIG. 4 (A), the piles driven into the bottom ground G by the pile driving method of this embodiment are the steel pipe sheet piles 101a, 101b, 101c, for example. Each of the steel pipe sheet piles 101a, 101b, 101c has a pair of joints 102. By fitting the joints 102 together, the steel pipe sheet piles 101a, 101b, 101c are connected to each other. In the following description, an example in which the steel pipe sheet pile 101a and the like are driven into the water bottom ground G will be described. In addition, the steel piles 110a, 110b, and 110c shown to FIG. 4 (B) may be sufficient as the pile driven into the underwater ground G by the pile guide 1A and the pile driving method of this embodiment, for example. Each of the steel sheet piles 110a, 110b, 110c also has a pair of joints 102. By fitting the joints 112 to each other, the steel sheet piles 111a, 111b, and 111c are also connected to each other.

  As shown in FIG. 2, a guide pile position measuring step for measuring the position of the guide pile 2 is performed after the guide pile placing step (S2). The position of the guide pile 2 is measured by, for example, measuring the latitude and longitude of the center of the guide pile 2 by the GPS unit 18. Moreover, the position of the guide pile 2 may be measured by surveying by an operator or the like.

  A placing pile position setting step for setting a relative position of the steel pipe sheet pile 101a or the like that is a pile driven around the guide pile 2 with respect to the guide pile 2 is performed (S3). In the placing pile position setting step, the relative position of the pile such as the steel pipe sheet pile 101a with respect to the position of the guide pile 2 measured in the guide pile position measurement step is set. A specific example will be described below. For convenience of explanation, the float member 9 is not shown in FIGS.

For example, as shown in FIG. 5, in the placing pile position setting step, a relative position P _{a with} respect to each guide pile 2 of a pile in which a plurality of piles such as steel pipe sheet piles 101 a and 101 n are continuous in a plan view. , _Pn, etc. are set. In the example of FIG. 5, a plurality of steel pipe sheet piles 101 a and the like that are to be driven into the water bottom ground G in a plan view have a continuous circular shape. Will be a steel pipe sheet piles 101a, which are discharged, and the center of the circle by 101n, etc., it is coincident with the position _{P A} of the guide piles 2. In the example of FIG. 6, similarly to FIG. 5, a plurality of steel pipe sheet piles 101 a, 101 n and the like that are to be driven into the bottom ground G in a plan view have a continuous circular shape. However, the center C of the circle by the steel pipe piles 101a etc. are expected to be driven, does not coincide with the position P _A of the guide piles 2.

The shape formed by the plurality of steel pipe sheet piles 101a and the like in plan view is not limited to a circular shape. For example, in the example of FIG. 7, two pile guides 1 </ b> A and 1 </ b> B are driven into the water bottom ground G in the guide pile placing step. The position of the guide piles 2 of the pile guide 1B measured at the guide pile position measurement step is the position P _B. A plurality of steel pipe sheet piles 101a, 101m, etc., which are planned to be driven into the water bottom ground G in a plan view, have a continuous elliptical shape, or a semicircular outer periphery that connects two parallel straight portions and the ends of the straight portions. It forms a continuous oval shape consisting of two curved parts. The relative positions P _a and P _m of the pile guides 1A and 1B such as the steel pipe sheet piles 101a and 101m with respect to the guide pile 2 are set.

Also in the example of FIG. 8, the two pile guides 1 </ b> A and 1 </ b> B are driven into the water bottom ground G in the guide pile placing process. A plurality of steel pipe sheet piles 101j, 101k, etc., which are scheduled to be driven into the water bottom ground G in a plan view, have a continuous rectangular shape. The relative positions _Pj and _Pk of the pile guides 1A and 1B such as the steel pipe sheet piles 101j and 101k with respect to the guide pile 2 are set.

Figure 2, as shown in FIGS. 5-8, according to the relative position P _a relative pile guide piles 2 such as set steel sheet pile 101a to at hitting設杭position setting step, implanting around the guide piles 2 pile position P _a and the like and the guide frame 6a, so 6b coincide and a position for guiding the pile, the guide frame 6a around the guide pile 2 from an arbitrary reference direction N, the rotation angle theta _a like of 6b Then, a guide frame setting step for setting _a distance da between the guide pile 2 and the guide frames 6a and 6b is performed (S4).

In the example of FIG. 5, will be a steel pipe sheet piles 101a, which are discharged, and the center of the circle by 101n, etc., it is coincident with the position P _A of the guide piles 2. Therefore, the steel pipe sheet pile 101a, for any of 101n, the distance _{d a} is a constant, only the rotation angle theta _a is changed. In the examples of FIGS. 5 to 8, north is the reference direction N, but the reference direction N can be arbitrarily determined. In the example of FIG. 6, will be a steel pipe sheet piles 101a, which are discharged, and the center C of the circle by such 101n, it does not coincide with the position P _A of the guide piles 2. Therefore, the steel pipe sheet pile 101a, for each 101n, guide frame 6a, 6b and the rotation angle theta _a like and the distance _{d a} and the like are set.

In the example of FIG. 7, the rotation angles θ _{a_A} , θ _{b_B,} and the distances d _{a_A} , _{dm_B,} etc. are _determined for each pile guide 1A, 1B in which the steel pipe sheet piles 101a, 101m are guided by the guide frames 6a, 6b. Is set. The suffix A of the rotation angle θ _{a_A} and the distance d _{a_A} means that the pile is guided by the guide frames 6a and 6b of the pile guide 1A. The suffix A of the rotation angle θ _{a_B} and the distance d _{a_B} means that the pile is guided by the guide frames 6a and 6b of the pile guide 1B. Similarly, in the example of FIG. 8, the rotation angles θ _{j_A} , θ _{k_B,} and the distances d _{j_A} , d _{k_B,} etc. for each of the pile guides 1A, 1B guided by the guide frames 6a, 6b of the steel pipe sheet piles 101j, 101k, etc. And are set.

Figure 2, as shown in Figures 5-8, the guide frame fixing step of fixing the guide frame 6a, and 6b on the rotational angle theta _a like set by the guide frame setting step and the distance d _a and the like are performed (S5) . The placing pile position setting step and the guide frame setting step described above can be performed simultaneously on all of the steel pipe sheet piles 101a, 101n and the like that are to be driven in, but the guide frame fixing step is a steel pipe sheet pile that is to be driven in. It is performed every 101a. Changes in the rotational angle theta _a and the like are performed by the rotation drive unit 14. Distance changing to d _a and the like are performed by the guide arm extension mechanism 11.

As shown in FIG. 2, a pile driving process is performed in which the piles are driven into the underwater ground G while guiding the piles such as the steel pipe sheet pile 101a to the guide frames 6a and 6b fixed in the guide frame fixing process (S6). The pile driving process is performed by a crane 300 as shown in FIG. 9, for example. In the present embodiment, in the pile driving step, a pile such as a steel pipe sheet pile 101a is driven into the water bottom ground G, but a steel sheet pile 111a as shown in FIG. 4 (B) may be driven into the water bottom ground G. . When Pile driving, such as one of the steel pipe sheet pile 101a is completed, the next pile, fixed rotation angle theta _n such a distance d _n, etc. and the guide frame 6a that is set by the guide frame setting process, 6b guide A frame fixing process is performed, and then a pile driving process is performed for the next pile. After all the piles such as the steel pipe sheet piles 101a have been driven, the pile guides 1A and 1B are removed from the bottom ground G and used again.

  In this embodiment, the guide pile 2 of the pile guide 1A is driven into the water bottom ground G, and the piles are attached to the guide frames 6a and 6b provided at the other end 5 of the guide arms 3a and 3b. The guide arm 3a, 3b is rotated around the guide pile 2 with the guide frame 6a, 6b as the central axis, and the other end of the guide arm 3a, 3b is driven. The next pile can be driven into the underwater ground G while the next pile is guided by the guide frames 6 a and 6 b provided in 5. It is not necessary to drive a pile guide such as H steel into the water bottom ground G for each pile driven into the water bottom ground G. Moreover, the pile driven into the underwater ground G can be accurately guided by the guide arms 3a and 3b having the guide pile 2 as the central axis of rotation. For this reason, the labor which installs a pile guide in a water bottom ground can be reduced, maintaining the precision which drives a pile into the water bottom ground G.

  Moreover, in this embodiment, since the guide arms 3a and 3b are supported by the support member 7 that supports the guide arms 3a and 3b while being in contact with the water bottom ground G, the guide arms 3a and 3b are more reliably supported on the water bottom ground G.

  Further, in the present embodiment, the support member expansion / contraction mechanism 8 adjusts the support member 7 so that it can be expanded and contracted according to the distance between the water bottom ground G and the guide arms 3a and 3b. The guide arms 3a and 3b can be supported while responding to fluctuations in the distance between the ground G and the guide arms 3a and 3b.

  In the present embodiment, the guide arms 3a and 3b are supported by the float member 9 that supports the guide arms 3a and 3b by buoyancy from the water W above the bottom ground G. Supported by

  In the present embodiment, the float member 9 is moved relative to the water surface S of the float member 9 according to the distance between the water surface S of the water W and the guide arms 3a and 3b by the support member expansion / contraction mechanism 8 which is a float member position adjusting mechanism. Since the position is adjusted, the guide arms 3a and 3b can be supported while responding to fluctuations in the distance between the water surface S and the guide arms 3a and 3b due to a tidal action or the like.

  In the present embodiment, the float member 9 is variably adjusted by the buoyancy adjusting mechanism 10 so that the buoyancy from the water W can be changed. Therefore, the fluctuation of the distance between the water surface S and the guide arms 3a and 3b due to the tide action or the like The guide arms 3a and 3b can be supported while corresponding to the weight of the pile to be guided.

  Moreover, in this embodiment, since the guide frames 6a and 6b are respectively provided at the same position in plan view and at a plurality of positions in side view, the pile driven into the submarine ground G can be guided more accurately and vertically. Can do.

  Moreover, in this embodiment, since the distance between the guide pile 2 and the guide frames 6a and 6b is telescopically changed in the guide arms 3a and 3b by the guide arm extending and retracting mechanism 11, the guide arm 2 can be moved from the guide pile 2 to an arbitrary position. You can drive a pile. Further, since the position of the pile driven into the water bottom ground G can be adjusted by the guide arm expansion / contraction mechanism 11, there is an advantage that the accuracy of driving the guide pile 2 into the water bottom ground G may be relatively low.

Moreover, in this embodiment, the guide pile 2 is driven into the water bottom ground G by the guide pile driving step, and the relative position of the pile driven around the guide pile 2 by the driving pile position setting step is relative to the guide pile 2. P _a and the like are set by the guide frame setting step, according to the relative position P _a, etc. with respect to the guide piles 2 of piles set in droplet設杭position setting step, the position of the pile driven into the surrounding guide pile 2 P _a like and the guide frame 6a, so 6b coincide and a position for guiding the pile, and the guide frame 6a, 6b rotation angle theta _a like of around guide pile 2 from an arbitrary reference direction N, guide piles 2 and the guide frame 6a, is set and the distance d _a such a 6b, the guide frame fixing step, the guide frame setting step rotation angle theta _a set in such a distance d _a like guide frame 6a, 6b is Fixed, and the pile driving process Frame fixing step with a fixed guide frame 6a, piles piles are driven into the sea bed soil G while forced guided 6b. Thereby, the pile can be driven into a relatively accurate position with respect to the guide pile 2.

Further, in the present embodiment, after the guide pile setting step, the guide stake position measuring step, the measuring position P _A and the like of the guide piles 2, the striking設杭position setting step, measured at the guide pile position measurement step since the position of the guide piles 2 P _a relative position P _a like piles for the like are set, it is possible to drive the pile into absolutely precise position. Further, errors such as the position P _A of the guide piles 2, which are discharged by the guide pile setting step, because it can be modified in hit設杭position setting step, implanting guide pile 2 in the sea bed soil G in about guide pile設工There is an advantage that the accuracy may be relatively low.

  Moreover, in this embodiment, while maintaining the precision which drives the steel sheet pile 111a etc. or the steel pipe sheet pile 101a etc. into the underwater ground G, and reducing the labor which installs the pile guide 1A, 1B in the underwater ground G, the steel sheet pile well foundation Or the steel pipe sheet pile well foundation can be constructed.

  As mentioned above, although embodiment of this invention was described, this invention is implemented in various forms, without being limited to the said embodiment. For example, the guide pile position measuring step, the placing pile position setting step, the guide frame setting step, and the guide frame fixing step in the above embodiment are not essential, and the guide pile 2 is simply placed in the guide pile placing step. The pile is driven into a circular shape centering on the guide pile 2 in plan view by driving the pile while guiding it with the guide frames 6a and 6b in the installation process, and driving the next pile after rotating the guide frames 6a and 6b. be able to.

DESCRIPTION OF SYMBOLS 1A, 1B ... Pile guide, 2 ... Guide pile, 3a, 3b ... Guide arm, 4 ... One end, 5 ... Other end, 6a, 6b ... Guide frame, 7 ... Support member, 8 ... Support member expansion-contraction mechanism, 9 ... Float 10: Buoyancy adjustment mechanism, 11: Guide arm expansion / contraction mechanism, 12: Ground insertion end, 13: Rotating shaft, 14: Rotating drive unit, 15 ... Motor pulley, 16 ... Rotating shaft pulley, 17 ... Timing belt, 18 ... GPS part, 19 ... guide arm extendable part, 20 ... cylinder part, 21 ... piston part, 22 ... scaffold, 23 ... ground contact surface part, 24 ... support member extendable part, 25 ... cylinder part, 26 ... piston part, 101a, 101b, 101c, 101j, 101k, 101m, 101n ... steel pipe sheet pile, 102 ... joint, 111a, 111b, 111c ... steel sheet pile, 112 ... joint, 200 ... scissors, 300 Crane, G ... sea bed soil, W ... water, S ... water, N ... reference _{direction, P A, P B, P} a, P j, P k, P m, P n ... _position, θ _a, θ a_A, θj _{_A, θ k_B, θ m_B ...} rotation _{angle, d a, d a_A, dj} _A, d k_B, d m_B ... distance, C ... center.

Claims (12)

A guide pile driven into the underwater ground,
One end of the guide pile is attached to the guide pile, and the other end is rotatable around the guide pile with the guide pile as a central axis.
A guide frame that is provided at the other end of the guide arm and guides a pile driven into the water-floor ground;
With pile guide.   The pile guide according to claim 1, wherein the guide arm includes a support member that supports the guide arm while abutting against the water bottom ground.   The pile guide according to claim 2, wherein the support member has a support member expansion / contraction mechanism that adjusts the support member in a telescopic manner according to a distance between the water bottom ground and the guide arm.   The pile guide according to any one of claims 1 to 3, wherein the guide arm includes a float member that supports the guide arm by buoyancy from water above the bottom bottom ground.   The pile guide according to claim 4, wherein the float member has a float member position adjusting mechanism that adjusts a position of the float member with respect to the water surface according to a distance between the water surface of the water and the guide arm.   The pile guide according to claim 4 or 5, wherein the float member includes a buoyancy adjustment mechanism that adjusts the buoyancy from the water in a changeable manner.   The pile guide according to any one of claims 1 to 6, wherein the guide frames are provided at the same position in a plan view and provided at a plurality of positions in a side view.   The pile guide according to any one of claims 1 to 7, wherein the guide arm has a guide arm expansion / contraction mechanism that changes a distance between the guide pile and the guide frame so as to be expandable / contractible. A pile driving method for driving the pile using the pile guide according to any one of claims 1 to 8,
A guide pile driving step of driving the guide pile into the submarine ground;
After the guide pile driving step, a pile driving step of driving the pile into the water bottom ground while guiding the pile to the guide frame,
Pile driving method with A pile driving method for driving the pile using the pile guide according to claim 8,
A guide pile driving step of driving the guide pile into the submarine ground;
A placing pile position setting step for setting a relative position of the pile to be driven around the guide pile with respect to the guide pile;
The position of the pile driven around the guide pile and the position where the guide frame guides the pile according to the relative position of the pile set in the placing pile position setting step with respect to the guide pile. A guide frame setting step for setting a rotation angle of the guide frame around the guide pile from an arbitrary reference direction and a distance between the guide pile and the guide frame so as to coincide with each other;
A guide frame fixing step of fixing the guide frame to the rotation angle and the distance set in the guide frame setting step;
A pile driving step of driving the pile into the submarine ground while guiding the pile to the guide frame fixed in the guide frame fixing step;
Pile driving method with A guide pile position measuring step for measuring the position of the guide pile after the guide pile placing step;
The pile placing method according to claim 10, wherein, in the placing pile position setting step, a relative position of the pile with respect to the position of the guide pile measured in the guide pile position measuring step is set. In the placing pile position setting step, a relative position with respect to each of the guide piles of the pile in which a plurality of the piles are continuous in a plan view is set,
The pile placing method according to any one of claims 10 to 11, wherein in the pile placing step, the pile that is one of a steel sheet pile and a steel pipe sheet pile is driven into the water bottom ground.

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