JP4558699B2 - Method and gripping jig for deformed steel sheet pile or steel driving member - Google Patents

Description

  The present invention relates to a method for gripping a deformed steel sheet pile or a steel driving member (such as H-shaped steel) with a hat chuck device for gripping a hat-shaped steel sheet pile, a grip jig used therefor, and a grip jig The present invention relates to an attached deformed steel sheet pile or a steel driving member.

  Conventionally, when driving or pulling out a hat-shaped steel sheet pile (see JIS A 5523 and JIS A 5528), grip the upper end of the hat-shaped steel sheet pile or an arbitrary position between the lower end and the upper end. A hat chuck device connected to a device, a hydraulic press-fitting device, or the like is used.

  First, referring to FIG. 11 and FIG. 12, the present hat-shaped steel sheet pile, the present hat chuck device for gripping this hat-shaped steel sheet pile, and the cross-sectional shape of the hat-shaped steel sheet pile differ depending on the hat chuck device. A conventional method for gripping the deformed steel sheet pile will be described. The current hat chuck devices are disclosed in Patent Documents 1 to 3.

  11 schematically shows a state in which a hat-shaped steel sheet pile is gripped by the hat chuck device disclosed in Patent Document 1, FIG. 11A is a front view, and FIG. 11B is a bottom view. . The hat chuck device 4 includes a pair of chuck portions 40a and 40b for gripping the hat-shaped steel sheet pile 3 at a lower portion, and a support main body portion 45 that supports the chuck portions 40a and 40b and drives and controls the gripping mechanism at an upper portion. I have. The upper end of the hat chuck device 4 is connected to an appropriate vibratory hammer device 5 or the like.

  The hat-shaped steel sheet pile 3 has the basic shape shown in the top view of FIG. 11C, and an obtuse angle α with respect to the surface of the web 31 from one flat plate web 31 and both side edges thereof. A pair of flat plate-like flanges 32A and 32B, a pair of arms 33A and 33B extending outward from the outer edge of each flange in parallel with the surface of the web 31, and an outer edge of each arm, respectively. A pair of joints 34A and 34B provided is provided. The hat-shaped steel sheet pile 3 has a substantially left-right symmetric shape (excluding the difference in the orientation of the joint opening) with respect to the center line in the width direction (direction connecting both joints) in the top view (the same applies to the sectional view). There are several shapes with different dimensions such as the overall length W, the height L, and the flange angle α.

  Such a hat-shaped steel sheet pile has an effective width larger than that of a conventional U-shaped steel sheet pile, and the cross-sectional shape is a hat-shaped as shown in FIG. It was difficult to secure good workability with the single chuck method. For this reason, in the hat-shaped steel sheet pile, a double chuck system for gripping a pair of flanges or a pair of arms is adopted, and the hat chuck device realizes this.

  As shown in the bottom view of FIG. 11 (B), the pair of chuck portions 40a, 40b of the hat chuck device 4 are provided for gripping the pair of flanges 32A, 32B of the hat-shaped steel sheet pile 3, respectively. They are arranged symmetrically in a square shape with respect to the center line. On one chuck portion 40a, a fixed claw 41a supported on the fixed claw base portion 43a and a movable claw 42a supported on the movable claw base portion 44a are arranged to face each other, and one of the hat-shaped steel sheet piles 3 is arranged. When the upper end of the flange 32A is inserted, the movable claw 42a moves and presses to hold it. Similarly, the other chuck | zipper part 40b inserts the upper end part of the other flange 32B of the hat-shaped steel sheet pile 3, and grips this. The fixed claws 41a and 41b and the movable claws 42a and 42b have a length (longitudinal direction of the hat-shaped steel sheet pile) and a width (perpendicular to the longitudinal direction) capable of gripping the flanges 32A and 32B of the hat-shaped steel sheet pile 3 sufficiently stably. Direction). A hat chuck device that grips both flanges of a hat-shaped steel sheet pile is excellent in that vibration energy from a vibratory hammer device or the like can be efficiently transmitted because the center of gravity of the hat-shaped steel sheet pile can be gripped.

  FIGS. 11A and 11B show an example of a conventional hat chuck device. In another example, a fixed claw of the chuck portion is provided outside and a movable claw is provided inside. In addition, the chuck portion is provided with a gap d that is “play” for appropriate gripping.

  Furthermore, since the hat chuck device 4 of FIG. 11 corresponds to the hat-shaped steel sheet pile 3 having a different flange angle α, the chuck portions 40a and 40b can rotate within a predetermined rotation angle range around the rotation shafts 46a and 46b. It is. The hat chuck device 4 can directly grip the hat-shaped steel sheet pile 3 that can cope with this rotation angle range.

  Patent Documents 2 and 3 disclose a hat chuck device that holds both arms of the hat-shaped steel sheet pile 3. In the method of gripping both arm portions, there is a problem that the center of gravity (neutral axis) position of the hat-shaped steel sheet pile cannot be gripped, but there is also an advantage that it is easy to cope with hat-shaped steel sheet piles having different flange angles α.

  However, any hat chuck device that grips both flanges and grips both arm portions cannot directly grip most of the deformed steel sheet piles. The deformed steel sheet pile is adapted to the bending angle of the steel sheet pile wall when the casting normal is bent, corrected when the steel sheet pile is inclined from the vertical direction, connected to a steel sheet pile of a different shape, It is used when adjusting the width of the sheet pile, and is made into various shapes according to the purpose. Naturally, the cross-sectional shape is different from that of the normal hat steel sheet pile shown in FIG.

  FIG. 12 is a diagram illustrating a conventional method of gripping a deformed steel sheet pile. The modified steel sheet pile 2 shown in FIG. 12A is obtained by cutting one partial sheet pile 20A obtained by vertically dividing a U-shaped steel sheet pile into two parts and one partial sheet pile 20B obtained by dividing a hat-shaped steel sheet pile vertically by two. It is formed by welding (reference numeral 28) with a line (the broken line in the figure shows the shape of the original steel sheet pile before being divided into two). The web 21 of the modified steel sheet pile 2 includes a partial web 21A of the original U-shaped steel sheet pile and a partial web 21B of the original hat-shaped steel sheet pile. One side of the web 21 includes a flange 22A of a U-shaped steel sheet pile and a joint 24A, and the other side includes a flange 22B of a hat-shaped steel sheet pile, an arm 23B, and a joint 24B. The deformed steel sheet pile 2 having such a shape cannot be directly gripped by either the hat chuck device 4 for gripping both flange portions of FIG. 11 or the hat chuck device for gripping both arm portions.

  Therefore, conventionally, as shown in the top view of FIG. 12B and the front view of FIG. 12C, two gripping jigs 101 and 102 are attached to the upper end of the deformed steel sheet pile 2 as gripping jigs, The gripping jigs 101 and 102 are gripped by the hat chuck device 4. This is an example corresponding to a hat chuck device that holds both flange portions. Each of the holding jigs 101 and 102 is attached so as to have substantially the same shape and the same arrangement as each of the pair of flanges of the hat-shaped steel sheet pile in cross-sectional shape, and its length (longitudinal direction of the steel sheet pile) The length is such that a sufficient grip allowance by the chuck device 4 is obtained.

As shown in the front view of FIG. 12 (C), the attachment method is provided with slit-shaped notches at the lower ends of the holding jigs 101 and 102, and the holding jigs 101 and 102 are attached to the upper end of the deformed steel sheet pile 2. Both are joined and fixed by insertion and welding (or a slit-like cut portion may be provided at the upper end of the deformed steel sheet pile 2). As a result, as shown in the bottom view of FIG. 12D, the gripping jigs 101 and 102 can be gripped by the hat chuck device 4 of FIG. 11, and the deformed steel sheet pile 2 is driven or pulled out in this state. be able to.
JP 2005-344361 A Japanese Patent No. 3755296 Japanese Patent No. 3755381

However, since the conventional gripping jigs 101 and 102 shown in FIG. 12 are two separated flat plates, there is a risk of deformation or detachment when a large load is applied.
In addition, when attaching the gripping jig at a predetermined angle to the surface of the deformed steel sheet pile, the mounting position is determined after measuring the dimensions and shape of the deformed steel sheet pile because they are two separate gripping jigs. In addition, it is necessary to determine the mounting angle, and it is also necessary to manage the mounting accuracy of the two sheets during processing.

  Also, at the construction site of steel sheet piles, H-shaped steel is often driven as a guiding pile for guiding frames. However, H-shaped steel can be directly gripped by both flange gripping type and both arm holding type hat chuck devices. Can not do it. Therefore, it has been necessary to change to a single chuck type chuck device for holding the H-shaped steel each time, or to prepare another driving machine equipped with a single chuck type chuck device.

  Furthermore, in the continuous underground wall method and cement-based ground improvement method, concrete and soil cement improvement bodies, etc. are used in order to use steel driven members such as H-shaped steel, steel pipes, and H-shaped steel sheet piles as structural cores. Before the time-curable material is cured, a steel driving member is built in these materials and embedded by means such as press-fitting or driving. As the steel driving member, there are various shapes such as a grooved steel, an I-shaped steel, a circular steel pipe, a square steel pipe, etc. in addition to the H-shaped steel, but none of them can be directly gripped by the hat chuck device. . It should be noted that, when embedment, those that mainly use the mass of the member are included in the steel driving member (the same applies to the present invention described later).

  Therefore, the present invention ensures the same stability and reliability as when directly gripping a normal hat-shaped steel sheet pile, and is modified by a hat chuck device (including both flange gripping method and both arm gripping method). To provide a method for gripping a steel sheet pile or various steel driving members, a gripping jig used therefor, and a deformed steel sheet pile with a gripping jig to which such a gripping jig is attached or a steel driving member with a gripping jig. With the goal.

In order to achieve the above object, the present invention provides the following configurations. The numbers in parentheses are reference numerals in the drawings showing examples to be described later, and are attached for reference.
(1) A method of gripping a deformed steel sheet pile or a steel driving member according to claim 1 is a hat-shaped steel sheet pile comprising a web (31), a pair of flanges (32A, 32B), a pair of arms, and a pair of joints. By a hat chuck device (4) provided with a pair of chuck portions (40a, 40b) capable of gripping the pair of flanges in (3), a deformed steel sheet pile (2) other than the hat-shaped steel sheet pile or a steel driven A method of gripping the member (7),
(A) A pair of jig flange portions (12a, 12b) that can be gripped by the pair of chuck portions of the hat chuck device as well as the pair of flanges of the hat-shaped steel sheet pile, and the pair of jig flange portions Producing a set of integral gripping jigs (1) provided with a connecting portion (11) for connecting
(B) At least a means for bringing the gripping jig and the deformed steel sheet pile or the steel driving member into an integrated state when gripped by the hat chuck device is added, and the deformed steel sheet pile Or a step of installing the gripping jig at the upper end of the steel driving member;
(C) gripping upper end portions of the pair of jig flange portions in the gripping jig with the pair of chuck portions of the hat chuck device.

(2) A method of gripping a deformed steel sheet pile or a steel driving member according to claim 2 is a hat-shaped steel sheet pile comprising a web (31), a pair of flanges (32A, 32B), a pair of arms, and a pair of joints. By a hat chuck device (4) provided with a pair of chuck portions (40a, 40b) capable of gripping the pair of arms in (3), a deformed steel sheet pile (2) other than the hat-shaped steel sheet pile or steel driven A method of gripping the member (7),
(A) A pair of jig arm parts (13a, 13b) that can be gripped by the pair of chuck parts of the hat chuck device equivalent to the pair of arms of the hat-shaped steel sheet pile, and the pair of jig arm parts Producing a set of integral gripping jigs (1) provided with connecting portions (12a, 11, 12b) for connecting
(B) At least a means for bringing the gripping jig and the deformed steel sheet pile or the steel driving member into an integrated state when gripped by the hat chuck device is added, and the deformed steel sheet pile Or a step of installing the gripping jig at the upper end of the steel driving member;
(C) gripping the upper end portions of the pair of jig arm portions in the gripping jig with the pair of chuck portions of the hat chuck device.

(3) A method for gripping a deformed steel sheet pile or a steel driving member according to claim 3 is the step of producing the gripping jig (1) according to claim 1 or 2, wherein one hat-shaped steel sheet pile is The gripping jig is manufactured by cutting to a length that can be gripped by the hat chuck device in the longitudinal direction.

(4) A gripping jig for gripping a deformed steel sheet pile or a steel driving member according to claim 4 includes a web (31), a pair of flanges (32A, 32B), a pair of arms, and a pair of joints. A deformed steel sheet pile (2) or steel other than the hat-shaped steel sheet pile by a hat chuck device (4) having a pair of chuck portions (40a, 40b) capable of gripping the pair of flanges in the shaped steel sheet pile (3) A pair of integral gripping jigs installed at the upper end of the deformed steel sheet pile or steel driving member to grip the steel driving member (7),
A pair of jig flange parts (12a, 12b) that can be gripped by the pair of chuck parts of the hat chuck device and the pair of jig flange parts are connected to each other equivalent to the pair of flanges of the hat-shaped steel sheet pile. And a connecting portion (11).

(5) A gripping jig for gripping a deformed steel sheet pile or a steel driving member according to claim 5 includes a web (31), a pair of flanges (32A, 32B), a pair of arms, and a pair of joints. A deformed steel sheet pile (2) or steel other than the hat-shaped steel sheet pile by a hat chuck device (4) provided with a pair of chuck portions (40a, 40b) capable of gripping the pair of arms in the shaped steel sheet pile (3) A pair of integral gripping jigs installed at the upper end of the deformed steel sheet pile or steel driving member to grip the steel driving member (7),
A pair of jig arm parts (13a, 13b) that can be gripped by the pair of chuck parts of the hat chuck device and the pair of jig arm parts are connected to the pair of arms of the hat-shaped steel sheet pile. It is provided with a connection part (12a, 11, 12b).

(6) The deformed steel sheet pile with gripping jig according to claim 6 is a deformed steel sheet pile, wherein the gripping jig according to claim 4 or 5 is installed and bonded and fixed to an upper end portion thereof. .

(7) A steel driving member with a gripping jig according to claim 7 is a steel driving member, wherein the gripping jig according to claim 4 or 5 is installed and bonded and fixed to an upper end portion thereof. And

(A) In the method for gripping a deformed steel sheet pile or a steel driven member according to the present invention, it is possible to grip a deformed steel sheet pile or the like by a hat chuck device that can grip both flanges or both arms of a normal hat-shaped steel sheet pile. In addition, a set of integral gripping jigs is installed at the upper end of a deformed steel sheet pile or the like.

The “installation” of the gripping jig is performed including adding means for bringing the gripping jig, the deformed steel sheet pile, etc. into an integrated state at least when gripped by the hat chuck device. . As an example of such means, when the gripping jig is installed on a deformed steel sheet pile or the like, the gripping jig and the deformed steel sheet pile or the like may be joined and fixed directly or by welding or the like via a holding gripping jig. Can be mentioned. In this case, the gripping jig, the deformed steel sheet pile, and the like are already coupled together before gripping.
As another example, a plate-like auxiliary jig is joined and fixed to the upper end of a deformed steel sheet pile or the like by welding or the like, and the auxiliary jig is fixed to the surface of the jig flange or jig arm of the holding jig. It is mentioned to make it contact | abut and to extend upwards. As a result, at the time of gripping, the gripping jig and the deformed steel sheet pile are integrally coupled by the hat chuck device gripping the overlapping portion of the jig flange or jig arm of the gripping jig and the auxiliary jig. It will be.

  In the embodiment corresponding to the hat chuck device of the both-flange gripping method, the grip jig can be gripped by the pair of chuck portions of the hat chuck device in the same manner as the pair of flanges of the hat-shaped steel sheet pile. And a connecting portion that connects these jig flange portions. Specifically, the jig flange portion has substantially the same shape and the same arrangement as the pair of flanges of the hat-shaped steel sheet pile in its cross-sectional shape. The “substantially the same shape and the same arrangement” means that the length and thickness of the individual jig flange portions in the cross-sectional shape are substantially the same as those of the individual flanges of the hat-shaped steel sheet pile, and a pair of jig flange portions. It means that the relative positional relationship between them is substantially the same as the relative positional relationship between a pair of flanges of a hat-shaped steel sheet pile (hereinafter the same). The reason for “substantially the same” is that there is a gap that is “play” for proper gripping in the chuck portion of the hat chuck device. As a result, the upper end portion of each jig flange portion of the gripping jig can be gripped by the both-flange gripping hat chuck device. Further, the pair of jig flange portions are connected to each other by a connecting portion to form a part of a set of integral gripping jigs. For example, the connecting portion has substantially the same shape as the web of the hat-shaped steel sheet pile in its cross-sectional shape. Therefore, the gripping jig can be gripped by the hat chuck device in exactly the same state as the upper end portion of a normal hat-shaped steel sheet pile. This means that “the jig flange portion of the holding jig can be gripped in the same manner as the flange portion of the hat-shaped steel sheet pile”.

  In another embodiment corresponding to the hat chuck device of the both-arm gripping method, the gripping jig is a pair of jigs that can be gripped by the pair of chuck portions of the hat chuck device equivalent to the pair of flanges of the hat-shaped steel sheet pile. The arm part and the connection part which connects these jig | tool arm parts are provided. Specifically, the pair of jig arm portions have substantially the same shape and the same arrangement as the pair of arms of the hat-shaped steel sheet pile in the cross-sectional shape. As a result, the upper end portion of each jig arm portion in the gripping jig can be gripped by the both-arm gripping type hat chuck device. Moreover, a pair of jig | tool arm parts are a part of one set of integral holding jigs by being connected by the connection part. For example, the connecting portion has substantially the same shape as the web of the hat-shaped steel sheet pile and the pair of flanges in its cross-sectional shape. Therefore, the gripping jig can be gripped by the hat chuck device in exactly the same state as the upper end portion of a normal hat-shaped steel sheet pile. This means that “the jig arm portion of the gripping jig can be gripped in the same manner as the arm portion of the hat-shaped steel sheet pile”.

  Note that “a set” means that a pair of jig flange portions or a pair of jig arm portions of the gripping jig is formed by bending one member, and a plurality of pieces. This is to include both cases where the members are formed by welding or the like.

  Since the gripping jig of the present invention is a set of integral members, the rigidity of any of the above forms is greater than that of the conventional gripping jig separated into two pieces. Therefore, the possibility of deformation or detachment is greatly reduced even when a deformed steel sheet pile is driven or pulled out, and the stability and reliability in gripping the deformed steel sheet pile can be realized.

  Since the gripping jig of the present invention is a set of integral members and already includes a portion (a jig flange part or a jig arm part) that can be gripped as it is by a hat chuck device, This eliminates the need for management of mounting accuracy, which was necessary with a holding jig separated into sheets. Further, since the rigidity is higher than that of the conventional separated one, welding distortion at the time of attachment can be avoided.

  As a result, any shaped steel sheet pile or steel driving member of any shape can be stably held and driven and pulled out by the current hat chuck device.

(B) In the method of gripping the deformed steel sheet pile or the steel driving member according to the present invention, in the step of manufacturing the gripping jig, one of the hat-shaped steel sheet piles is cut at a predetermined length in the longitudinal direction. A gripping jig is prepared. Thereby, compared with the case where a holding jig is produced by cutting and bending a flat steel plate or joining a plurality of steel plates, the holding jig can be produced more easily. The gripping jig produced by this method is naturally provided with a jig flange part and a jig arm part having the same shape as the pair of flanges and a pair of arms of the hat-shaped steel sheet pile, and this shape is further processed. Is unnecessary. In addition, both hat gripping devices using both flanges and both arms can be used as they are. Moreover, when producing a gripping jig by this method at a construction site, the hat-shaped steel sheet pile as the material is normally placed at the construction site, and the material is easily available on the spot.

(C) In one embodiment of the gripping jig for gripping a deformed steel sheet pile or gripping a steel driving member according to the present invention, the deformed steel sheet pile or the steel plate by a hat chuck device capable of gripping both flanges of a normal hat-shaped steel sheet pile It is a set of integral gripping jigs installed on a deformed steel sheet pile etc. to grip the steel driving member, and is equivalent to a pair of flanges of a hat-shaped steel sheet pile by a pair of chuck portions of a hat chuck device. A pair of jig flange portions that can be gripped and a connecting portion that connects the pair of jig flange portions. Specifically, the pair of jig flange portions have substantially the same shape and the same arrangement as the pair of flanges of the hat-shaped steel sheet pile in the cross-sectional shape thereof. Thereby, the upper end part of a holding jig can be hold | gripped with the hat chuck apparatus of a both-flange holding type.

  In another embodiment of a gripping jig for gripping a deformed steel sheet pile or gripping a steel driving member according to the present invention, a hat chuck device capable of gripping both arms of a normal hat-shaped steel sheet pile is used. A pair of integrated gripping jigs installed on a deformed steel sheet pile etc. to grip the driving member, and can be gripped by a pair of chuck parts of a hat chuck device equivalent to a pair of arms of a hat-shaped steel sheet pile A pair of jig arms and a connecting portion for connecting the pair of jig arms. Specifically, the pair of jig arm portions have substantially the same shape and the same arrangement as the pair of arms of the hat-shaped steel sheet pile in the cross-sectional shape thereof. Thereby, the upper end part of a holding jig can be hold | gripped with the hat chuck apparatus of a both-arm holding | grip system.

(D) The present invention also includes a deformed steel sheet pile with a gripping jig or a steel driving member with a gripping jig in which the gripping jig is installed and bonded and fixed. These effects are the same as the method of gripping the deformed steel sheet pile using the gripping jig.

  According to the present invention, even in a construction site where both a hat-shaped steel sheet pile and other deformed steel sheet piles or various steel driving members are driven, it is possible to cope with both by preparing only the hat chuck device. Since it is not necessary to replace the chuck device or prepare another driving machine, it is simple and the construction efficiency is greatly improved.

Embodiments of the present invention will be described below with reference to the drawings.
One embodiment of the present invention includes a method of gripping a deformed steel sheet pile or a steel driving member by a hat chuck device that grips both flanges of a hat-shaped steel sheet pile, a grip jig used therefor, and a grip jig attached thereto. This is a deformed steel sheet pile or a steel driving member.
In another embodiment of the present invention, a method of gripping a deformed steel sheet pile or a steel driving member by a hat chuck device that grips both arms of a hat-shaped steel sheet pile, a gripping jig used therefor, and a gripping jig It is a deformed steel sheet pile or a steel driving member to which a tool is attached.
Since these embodiments are substantially the same, in the following, an embodiment in which a hat chuck device of both flange gripping type is mainly applied to a deformed steel sheet pile will be described as an example.

  FIG. 1A is a perspective view showing the external appearance of a deformed steel sheet pile 2 and a gripping jig 1 to which the method for gripping a deformed steel sheet pile according to the present invention is applied. FIG. 1B is an X sectional view of FIG. The deformed steel sheet pile 2 is the same as that shown in FIG. 12 described above, and is produced by welding a part of a U-shaped steel sheet pile and a hat-shaped steel sheet pile.

  The deformed steel sheet pile 2 is welded (reference numeral 28) to one partial sheet pile obtained by vertically dividing the U-shaped steel sheet pile into two and one partial sheet pile obtained by dividing the hat-shaped steel sheet pile vertically into two. Is formed. Such a modified steel sheet pile 2 is used at the boundary when, for example, a hat-shaped steel sheet pile is newly installed following the existing U-shaped steel sheet pile. The web 21 of the modified steel sheet pile 2 includes a partial web 21A of the original U-shaped steel sheet pile and a partial web 21B of the original hat-shaped steel sheet pile. The side originating from the hat-shaped steel sheet pile of both side edges of the web 21 includes a flange 22B, an arm 23B, and a joint 24B, and the other side includes a flange 22A of a U-shaped steel sheet pile and a joint 24A. The deformed steel sheet pile 2 having such a shape cannot be directly gripped by the hat chuck device 4 of FIG.

  In the present invention, by attaching a set of integral gripping jigs 1 to the upper end of the deformed steel sheet pile 2, gripping by the hat chuck device is possible.

  As shown in FIGS. 1 (A) and 1 (B), the gripping jig 1 has an obtuse angle α with respect to the surface of the jig web part 11 from one flat jig web part 11 and both side edges thereof. A pair of plate-like jig flange portions 12a, 12b extending in parallel with each other, and a pair of jig arm portions extending outward from the outer edge of each jig flange portion in parallel with the surface of the jig web portion 11. 13a, 13b, and a pair of jig joints 14a, 14b provided on the outer edges of the jig arm parts. The gripping jig 1 has a substantially left-right symmetric shape (excluding the difference in the direction of the opening of the jig joint portion) with respect to the center line in the width direction (direction connecting the two jig joint portions) in the cross-sectional view.

  The pair of jig flange portions 12a and 12b of the gripping jig 1 have a cross-sectional shape and a length in the longitudinal direction that can be gripped by the pair of chuck portions of the hat chuck device in the same manner as the pair of flanges of the hat-shaped steel sheet pile. Specifically, in the cross-sectional shape, it is substantially the same shape and arrangement as a pair of flanges of a normal hat-shaped steel sheet pile that can be gripped by the hat chuck device 4 of FIG. The “substantially the same shape and the same arrangement” means that the length and thickness of the individual jig flange portions in the cross-sectional shape are substantially the same as those of the individual flanges of the hat-shaped steel sheet pile, and a pair of jig flange portions. It means that the relative positional relationship between them is substantially the same as the relative positional relationship between a pair of flanges of a hat-shaped steel sheet pile. Here, “substantially the same” means that the chuck portion of the hat chuck device is provided with a predetermined gap (see symbol d in FIG. 11 described above) as “play” for proper gripping. This is taken into account (the same applies to the embodiments described later). By attaching such a gripping jig 1, the upper end portion of the gripping jig 1 can be gripped by the hat chuck device.

  An example of a method of attaching and fixing the gripping jig 1 to the upper end of the deformed steel sheet pile 2 is as follows. First, it is determined at which position of the upper edge of the deformed steel sheet pile 2 the gripping jig 1 is attached. In this case, it is preferable that the center of gravity of the deformed steel sheet pile 2 and the center of gravity of the gripping jig 1 coincide as much as possible. There are at least two attachment points for joining and fixing the two, and depending on the shape of the deformed steel sheet pile 2, there may be more than that (see FIG. 5 described later). The gripping jig 1 is formed with slit-shaped cut portions 15a and 15b extending upward from the lower edge. In the illustrated example, notches 15a and 15b are formed on the lower edges of the jig flange portions 12a and 12b of the gripping jig 1, respectively.

  After the formation of each cut portion, the upper end portion of the deformed steel sheet pile 2 and the cut portions 15a and 15b of the gripping jig 1 are made to face each other, and the deformed steel sheet pile 2 is sandwiched between the slits and inserted to the farthest. The gripping jig 1 is fixed in one posture by being inserted to the farthest and does not swing from the posture. Thereafter, the parts 17a and 17b where the gripping jig 1 and the deformed steel sheet pile 2 intersect each other are welded and fixed together. Note that the joining and fixing means after the insertion is not limited to welding, and there are means using appropriate fixing brackets and bolts / nuts, means by pressure welding, and the like, but welding is good in workability and low cost.

  FIG. 2 is an exploded perspective view showing a state before joining the deformed steel sheet pile 2 and the holding jig 1. The insertion direction is indicated by a black arrow.

  The essential elements in the gripping jig 1 shown in FIGS. 1 and 2 are jig flange portions 12a and 12b that have substantially the same shape and arrangement as a pair of flanges of a normal hat-shaped steel sheet pile in its cross-sectional shape. . That is, in the cross-sectional shape, the flange angle α of both jig flange portions of the holding jig, the distance L3 between the jig web portion and the jig arm portion, the distance between the two jig flange portions, and the length of each jig flange portion The thickness and thickness are substantially the same as the flange angle α, the distance L between the web and the arm, the distance between the flanges, and the length and thickness of each flange in the hat-shaped steel sheet pile 3 shown in FIG. It is.

  This means that the pair of jig arm portions 13a and 13b and the pair of jig joint portions 14a and 14b included in the gripping jig 1 are unnecessary as far as gripping by the hat chuck device is concerned. Moreover, the jig web part 11 plays the role of the connection part which connects a pair of jig flange parts 12a and 12b, and does not necessarily need to be the completely same shape as the web of a hat-shaped steel sheet pile, and depends on a hat chuck apparatus. Any shape that does not hinder gripping (for example, does not interfere with the chuck portion) may be used.

  However, in a preferred method for producing the gripping jig 1, one normal hat-shaped steel sheet pile is cut by a predetermined length in the longitudinal direction, and a cut portion is formed with respect to the cut partial sheet pile. By doing so, a holding jig is produced. When a gripping jig is to be manufactured at the construction site by this manufacturing method, the hat-shaped steel sheet pile necessary for it is usually easily available at the construction site. In that case, you may make a gripping jig using an unused hat-shaped steel sheet pile, or make a gripping jig using waste material cut as an unnecessary part in the construction of the hat-shaped steel sheet pile. Also good. When such a manufacturing method is adopted, the jig arm portion and the jig joint portion are unnecessary, but are attached from the beginning, so that the number of work steps and cost are not increased at all. Further, the gripping jig manufactured by this manufacturing method can be applied not only to the hat chuck device of the both-flange gripping method but also to the hat chuck device of the both-arm gripping method shown in FIG. 7 described later.

  On the other hand, when producing the gripping jig 1 by cutting and bending the material steel plate or joining a plurality of steel plates, it is sufficient to have only a jig web portion and a pair of jig flange portions, It is not necessary to provide an unnecessary jig arm part and jig joint part (see FIG. 6 described later).

  The required length L1 of the gripping jig 1 will be described with reference to FIG. Depths of the notches 15a and 15b formed in the gripping jig 1 are indicated by reference numeral D1. When these cut portions are inserted to the innermost part, the length of the intersecting portion between the gripping jig 1 and the deformed steel sheet pile 2 is represented by D1. In the joined state of FIG. 1, the upper edge of the deformed steel sheet pile 2 is at a position D <b> 1 from the lower edge of the gripping jig 1. Therefore, the length of L2 as a grip allowance by the chuck portion of the hat chuck device is a length (L1-D1) obtained by subtracting D1 from the total length L1 of the gripping jig 1. The required length L1 is set so that this length L2 is sufficient as a gripping allowance. The length D1 is set so that the gripping jig 1 and the deformed steel sheet pile 2 are bonded and fixed with sufficient strength.

  As another embodiment, the notches 15 a and 15 b for joining the gripping jig 1 and the deformed steel sheet pile 2 may be provided at the upper end of the deformed steel sheet pile 2 instead of the lower end of the gripping jig 1. It is good (the same applies to each embodiment described later).

  FIG. 3A is a front view schematically showing a construction example to which the method for gripping a deformed steel sheet pile according to the present invention is applied. FIG. 3B is a top view showing the three steel sheet piles 3A, 2a, 3B and the gripping jig 1 that are connected. The deformed steel sheet pile 2a located in the center is a modified steel sheet pile for width adjustment that is wider than the normal hat-shaped steel sheet piles 3A and 3B located on both sides. Such a deformed steel sheet pile 2a is formed by, for example, vertically cutting two normal hat-shaped steel sheet piles at positions offset from the center line, and welding wide partial sheet piles with a cutting line, or a hat-shaped steel sheet One sheet pile is cut longitudinally, and a steel sheet pile having a predetermined width is sandwiched between portions that contact the web of the steel sheet pile to produce the sheet pile.

  The gripping jig 1 is attached and fixed to the upper end of the deformed steel sheet pile 2a by the method shown in FIGS. However, since the deformed steel sheet pile 2a is wide, the gripping jig 1 is attached to two upper edges of the flat web 11. As shown in FIG. 3B, the gripping jig 1 has the same shape as the hat-shaped steel sheet piles 3A and 3B in its cross-sectional shape. When the deformed steel sheet pile 2a is gripped by the hat chuck device 4, the fixed claw 41a and the movable claw 42a on one side grip one jig flange portion 12a of the gripping jig 1, and the fixed claw on the other side. 41b and the movable claw 42b hold the other jig flange portion 12b of the holding jig 1 (see the black arrow).

  FIG. 4 is a front view schematically showing another construction example to which the method for gripping a deformed steel sheet pile according to the present invention is applied. It is known that when a plurality of steel sheet piles are connected and sequentially placed, the steel sheet gradually inclines forward in the construction direction. When this inclination occurs, the side edge of the hat-shaped steel sheet pile 3C is displaced from the vertical direction as illustrated. When the deviation angle β is larger than a predetermined angle, a modified steel sheet pile 2b for inclination correction as shown in the figure is inserted, and the steel sheet pile connected thereafter is corrected so as to face the vertical direction. The deformed steel sheet pile 2b is produced using one or two normal hat-shaped steel sheet piles. When producing using one hat-shaped steel sheet pile, cut the web of the hat-shaped steel sheet pile at two locations in the longitudinal direction so that the angle between both cutting lines is β, and the cutting lines By welding with, a deformed steel sheet pile 2b as shown in the figure is obtained. When producing using two hat-shaped steel sheet piles, one of the two hat-shaped steel sheet piles is used by cutting the web vertically in parallel with the longitudinal direction (partial sheet pile in FIG. 4). 20B). The other hat-shaped steel sheet pile cuts the web with a straight line having an angle β with respect to the longitudinal direction and uses one of them (partial sheet pile 20A in FIG. 4). The upper edge of the partial sheet pile 20A is appropriately cut so as to be positioned in the same plane as the upper edge of the partial sheet pile 20B after welding. By welding these partial sheet piles 20A and 20B along their cutting lines, a deformed steel sheet pile 2b as shown is obtained.

  The gripping jig 1 is attached to the deformed steel sheet pile 2b by the method shown in FIGS. The gripping jig 1 is also attached to the deformed steel sheet pile 2b for correcting inclination so as to be parallel to the vertical direction, and the upper end portion thereof can be gripped by the hat chuck device 4.

  FIG. 5 is a top view illustrating various modified steel sheet piles and a method of attaching the gripping jig of the present invention thereto. The shape of the deformed steel sheet pile is extremely diverse and is not limited to a specific shape. The deformed steel sheet pile to which the present invention is applied is not limited to that manufactured using a hat-shaped steel sheet pile, but is manufactured using a hat-shaped steel sheet pile and a U-shaped steel sheet pile, or only manufactured using a U-shaped steel sheet pile. Also, those made of steel sheet piles of other shapes are included. Regardless of the shape of the deformed steel sheet pile, it can be gripped by the hat chuck device by attaching a set of integral gripping jigs that can be gripped by the hat chuck device. There are various methods for attaching the gripping jig of the present invention to these deformed steel sheet piles, but basically it is preferable to consider that the center of gravity of the deformed steel sheet pile and the center of gravity of the gripping jig are as close as possible. .

  FIG. 5 (A) is a wide deformed steel sheet pile 2a for width adjustment shown in FIG. 3, and FIG. 5 (B) is the same as FIG. It arrange | positions so that a jig | tool flange part may face a mutually reverse direction. In FIG. 5C, the flange of the deformed steel sheet pile 2a and the jig flange portion of the gripping jig 1 are arranged in the same direction. In this case, since the jig arm portion of the gripping jig 1 interferes with the flange of the deformed steel sheet pile 2a, a cut portion is formed also in these portions and both are inserted and welded. Therefore, there are a total of four attachment points.

  FIG. 5D shows a narrow deformed steel sheet pile 2c for width adjustment. The width of the web is narrower than that of a normal hat-shaped steel sheet pile. 5 (E) and FIG. 5 (F) respectively show examples in which the gripping jig 1 is mounted in the same direction as in FIGS. 5 (B) and 5 (C).

  FIG. 5G shows a deformed steel sheet pile 2d for the corner. In this case, it is a case where it is applied to a right-angled corner, and two normal hat-shaped steel sheet piles are cut vertically and are combined and welded so that the progress direction of construction changes to a right angle. The broken line has shown the shape of the original hat-shaped steel sheet pile. As another example, there is also a deformed steel sheet pile for corners in which a partial sheet pile cut longitudinally with respect to either side of a single complete hat-shaped sheet pile web is welded. In some cases, welding is performed at an angle other than a right angle depending on the shape of the corner. FIGS. 5 (H) and 5 (I) show examples in which the holding jig 1 is mounted with its orientation changed.

  FIG. 6 is a top view illustrating another embodiment of the gripping jig of the present invention and a method for attaching the holding jig to the deformed steel sheet pile. As described above, when gripping by a hat chuck device of the both-flange gripping method, one gripping jig should have a jig flange portion having the same shape and the same arrangement as the flange of a normal hat-shaped steel sheet pile. That's fine. The gripping jig 1a shown in FIG. 6 is formed of only a pair of jig flange portions 12a and 12b and a jig web portion 11 for connecting them. Since it has a simple shape, it is relatively easy to manufacture and is lighter than the gripping jig 1 shown in FIGS.

  6 (A) and 6 (B) are examples in which the holding jig 1a is attached to the wide deformed steel sheet pile 2a for width adjustment shown in FIG. 5 (A), and FIG. 5 (B) and FIG. Each corresponds to 5 (C). In this case, since there are no jig arm part and jig joint part, the number of attachment points may be two in the case of FIG.

  6 (C) and 6 (D) are examples in which the holding jig 1a is attached to the narrow-shaped steel sheet pile 2c for adjusting the width shown in FIG. 5 (D). Each corresponds to FIG.

  6 (E) and 6 (F) are examples in which the gripping jig 1a is attached to the deformed steel sheet pile 2d for the corner shown in FIG. 5 (G), and FIG. 5 (E) and FIG. Each corresponds to F).

  As described above, the present invention has been described with respect to the method of gripping the deformed steel sheet pile by the double flange gripping type hat chuck device and the gripping jig used therefor. However, in another embodiment of the present invention, the dual arm gripping type hat chuck device. Thus, the deformed steel sheet pile can be gripped. Hereafter, this another form is demonstrated roughly.

  Since the gripping jig 1 shown in FIGS. 1 and 2 has the jig arm portions 13a and 13b, the gripping jig 1 can be gripped by the hat chuck device 6 of the both-arm gripping type. FIG. 7 is a schematic bottom view showing a state where the deformed steel sheet pile 2 to which the gripping jig 1 is attached is gripped by the hat chuck device 6 of the both-arm gripping method. Also in the case of the both-arm grip type hat chuck device 6, the chuck portions 60a and 60b are provided with a gap d which is “play”. The pair of jig arm portions 13a and 13b has a cross-sectional shape and a length in the longitudinal direction that can be gripped by the pair of chuck portions 60a and 60b of the hat chuck device 6 in the same manner as the pair of arms of the hat-shaped steel sheet pile. Specifically, the jig arm portions 13a and 13b have substantially the same shape and the same arrangement as a pair of arms of a normal hat-shaped steel sheet pile in the cross-sectional shape. In this case, the jig joint portions 14a and 14b are unnecessary, but when the hat-shaped steel sheet pile is cut and the gripping jig 1 is manufactured, it is provided from the beginning and there is no problem in gripping. The jig web part 11 and the jig flange parts 12a and 12b serve as a connecting part for connecting the two jig arm parts 13a and 13b. As long as there is no hindrance to gripping, the web and flange of the hat-shaped steel sheet pile And not necessarily the same shape. Other points, that is, the method of attaching to the deformed steel sheet pile 2 and the like are as described with reference to FIGS.

  In still another embodiment of the present invention, a steel driving member other than a deformed steel sheet pile can be gripped by a hat chuck device of a double flange gripping type or a double arm gripping type. The steel driving member has various shapes, for example, an H-shaped steel sheet pile, an H-shaped steel, a grooved steel, an I-shaped steel, a circular steel pipe, a rectangular steel pipe, and the like. As an example, the case of H-section steel will be described. For example, H-shaped steel is often used as a guide pile and a guide beam of a guide frame in the construction of steel sheet piles. The guide frame work is performed in order to ensure the correct position and stability of the steel sheet pile. For example, two rows of guide piles are driven at predetermined intervals along the direction of the driving normal, and two horizontal guide beams are attached to the inside of the two rows of guide piles. The steel sheet pile is driven between the two guide beams.

  Conventionally, when the H-shaped steel is driven as a guide pile, the center web of the H-shaped steel is gripped by a single chuck type chuck device. Therefore, in construction sites where it is necessary to drive both H-shaped steel and hat chuck steel sheet piles, either the hat chuck device attached to the driving machine and the single chuck chuck device are replaced, or a separate chuck chuck device is attached. It was necessary to prepare a driving machine.

  By applying the present invention, H-shaped steel that cannot be directly gripped can be gripped by a hat chuck device. 8A and 8B are diagrams showing the two embodiments. Many hat-shaped steel sheet piles have a wide width such as 900 mm, and are generally larger than the width of H-shaped steel. Therefore, in order to attach a holding jig corresponding to a hat chuck device for a wide hat-shaped steel sheet pile to the H-shaped steel, an auxiliary jig is appropriately used.

  8A, four auxiliary jigs 1c1 to 1c4 are attached to the upper end portion of the H-section steel 7 by fixing means such as welding or bolts. Auxiliary jigs 1c1 and 1c2 are respectively attached outward from both side edges of the upper end of one flange 72a in parallel to the web 71. Auxiliary jigs 1c3 and 1c4 are provided from both side edges of the upper end of the other flange 72b. 71 is attached in parallel to 71 and outward. On the lower edge of the gripping jig 1 having the same shape as in FIG. 1, slit-shaped cut portions 15a1, 15a2, 15b1, and 15b2 are formed at corresponding positions. Then, each of the cut portions 15a1 to 15b2 of the holding jig 1 is inserted into the corresponding positions of the auxiliary jigs 1c1 to 1c4 as far as possible, and is fixedly bonded (see black arrows).

  In the embodiment of FIG. 8B, one horizontal auxiliary jig 1d is attached to the upper edge of the H-shaped steel 7 by fixing means such as welding or bolts. Furthermore, the lower edge of the holding jig 1 having the same shape as that shown in FIG. 1 is attached to the upper surface of the horizontal auxiliary jig 1d by a fixing means such as welding 17a, 17b or a bolt, and is fixed by bonding.

  As shown in FIG. 8 (A) or FIG. 8 (B), the upper end of the H-shaped steel has a jig flange or arm having the same shape and arrangement as the flange or arm of the hat-shaped steel sheet pile in cross section. By attaching and fixing the holding jig, the H-shaped steel can be held by the hat chuck device. Similarly, it is possible to grip other shapes of steel driving members by attaching a gripping jig with a hat chuck device. Accordingly, it is sufficient to prepare only a hat chuck device at the construction site, and efficient construction is possible.

  In each of the above embodiments, as a method of installing the gripping jig on the upper end portion of the deformed steel sheet pile or the like, a slit is provided in the gripping jig and both are joined and fixed by welding or the like, or an auxiliary jig without a slit is provided. However, these are only examples, and the method of installing the gripping jig on the deformed steel sheet pile is not limited to these, and various forms are possible. It is.

  FIGS. 9A, 9B, and 9C are perspective views showing several examples of a method of installing the gripping jig 1 on the deformed steel sheet pile 2a or the like. A thick black arrow indicates a position to be gripped by the hat chuck device.

  In FIG. 9A, the gripping jig 1 is placed on the upper end of the wide deformed steel sheet pile 2a, and the two plate-shaped auxiliary jigs 1e1 and 1e2 are gripped with the flanges 22A and 22B of the deformed steel sheet pile 2. It is passed to jig flange portions 12a and 12b of the jig 1 and joined and fixed by welding (reference numerals 17a and 17b). In this example, since the flared angle of the flanges 22A and 22B of the deformed steel sheet pile 1a and the jig flange portions 12a and 12b of the holding jig 1 are the same, both surfaces are on the same plane. The gripping jig 1 can be installed on the deformed steel sheet pile 2a in a uniform manner.

  When the driving of the deformed steel sheet pile 2a with the gripping jig of FIG. 9A is completed, the gripping jig 1 is not necessary, so the auxiliary jigs 1e1 and 1e2 are cut at the lower end of the gripping jig 1. Then, the holding jig 1 is separated from the deformed steel sheet pile 2a. The gripping jig 1 that has been used in this manner can be used again as a gripping jig.

  FIG. 9B is a diagram showing a reuse form of the gripping jig 1 of FIG. Prior to the attachment of the gripping jig 1, two plate-like auxiliary jigs 1f1 and 1f2 are attached by welding (reference numerals 17d and 17c) to a predetermined position of the upper end portion of the deformed steel sheet pile 2a. The upper ends of the auxiliary jigs 1f1 and 1f2 are at the same position as the upper end of the deformed steel sheet pile 2a. When the gripping jig 1 is placed at a predetermined position on the deformed steel sheet pile 2a, the lower ends of the auxiliary jigs 1e1 and 1e2 and the upper ends of the auxiliary jigs 1f1 and 1f2 are opposed to each other. Subsequently, the auxiliary jigs 1e1 and 1e2 and the auxiliary jigs 1f1 and 1f2 are welded (reference numerals 17e and 17f), respectively. Thereby, the holding jig 1 and the deformed steel sheet pile 2a are bonded and fixed.

  FIG. 9C is a view showing still another installation form of the gripping jig 1. In this case, a pair of plate-like auxiliary jigs 1g1 and 1g2 are welded (reference numerals 17a and 17b) to the upper ends of the flanges 22A and 22B of the deformed steel sheet pile 2a, respectively. The upper ends of the auxiliary jigs 1g1 and 1g2 extend above the upper end of the deformed steel sheet pile 2a. When the gripping jig 1 is placed at a predetermined position on the deformed steel sheet pile 2a, the auxiliary jigs 1g1 and 1g2 come into contact with the surfaces of the jig flange portions 12a and 12b of the gripping jig 1 (however, they are welded). Not) That is, the holding jig 1 is installed so that the surfaces of the jig flange portions 12a and 12b of the holding jig 1 and the surfaces of the flanges 22A and 22B of the deformed steel sheet pile 2a are on the same plane. The upper ends of the auxiliary jigs 1g1 and 1g2 extend to the same position as the upper end of the holding jig 1.

  When the upper end portion of the gripping jig 1 installed as shown in FIG. 9C is gripped by the hat chuck device, the overlapping portions of the auxiliary jigs 1g1 and 1g2 and the jig flange portions 12a and 12b are paired with a pair of chucks. Grip at the part. Note that the thicknesses of the auxiliary jigs 1g1 and 1g2 are appropriately set so that such gripping is possible within the range of play of the chuck portion. As a result, at the time of gripping, the gripping jig 1 and the deformed steel sheet pile 2a are coupled by the gripping force of the hat chuck device. Since the load applied to the deformed steel sheet pile 2a during construction is normally in the vertical direction, there is no problem as long as the gripping jig 1 and the deformed steel sheet pile 2a are gripped with sufficient gripping force even if they are not joined and fixed.

  As illustrated in FIG. 9C, in the gripping method according to the present invention, the gripping jig and the deformed steel sheet pile do not necessarily have to be joined and fixed by welding or the like. It is sufficient if the state can be realized. Means for realizing this is added when the gripping jig is installed on a deformed steel sheet pile or the like. The slits, welding, auxiliary jigs and the like provided in the holding jig and / or the deformed steel sheet pile in each of the above embodiments are specific examples of this means.

  Although FIG. 9 illustrates the case of the both-flange gripping method, the present invention can be similarly applied to the case of the both-arm gripping method.

  FIGS. 10A and 10B are external perspective views showing an embodiment in which a plurality of steel plates are joined to produce the gripping jig of the present invention. A gripping jig 1b shown in FIG. 10 (A) sandwiches another steel plate 11 that becomes a jig web portion 11 as a connecting portion between a pair of steel plates that become jig flange portions 12a and 12b. It is manufactured by welding (reference numerals 19a and 19b) at both ends. A gripping jig 1c shown in FIG. 10 (B) has two steel plates 11a and 11b as connecting portions separated in a vertical direction between a pair of steel plates to be jig flange portions 12a and 12b. It is produced by welding (reference numerals 19a, 19b) at both ends.

  10A and 10B, the overall length of the jig web part 11 or 11a, 11b in the vertical direction may be shorter than the overall length of the jig flange parts 12a, 12b. Further, the vertical lengths of the pair of jig flange portions 12a and 12b may be different. The steel plate to be the jig web portion 11 or 11a, 11b serves as a connecting portion for connecting the steel plates to be the jig flange portions 12a, 12b on both sides and maintaining their shape and position, and the jig flange portion. It also serves as a stopper when 12a and 12b are gripped by the hat chuck device and contributes to positioning when chucking.

(A) is a perspective view showing the appearance of a deformed steel sheet pile and a gripping jig to which an embodiment of a method for gripping a deformed steel sheet pile according to the present invention is applied. (B) is X sectional drawing of (A). It is a perspective view which shows the state before joining of a deformed steel sheet pile and a holding jig. (A) is a front view schematically showing a construction example to which the method for gripping a deformed steel sheet pile according to the present invention is applied. (B) is a top view showing only three steel sheet piles and a holding jig. It is a front view which shows roughly the example of another construction to which the holding | grip method of the deformed steel sheet pile by this invention is applied. (A)-(I) is the top view which illustrated the attachment method of the various shaped steel sheet pile and the holding jig of this invention with respect to it. (A)-(F) are the top views which illustrated another Example of the holding jig of this invention, and the attachment method to the deformed steel sheet pile. It is a bottom view which shows schematically another embodiment of the holding method of the deformed steel sheet pile by this invention. (A) (B) is a perspective view which shows schematically another embodiment of the holding method of the lead pile by this invention, respectively. (A) (B) (C) is a perspective view which shows some examples of the method of installing a holding jig in a deformed steel sheet pile, etc., respectively. (A) (B) is the external appearance perspective view which showed the Example which joins a some steel plate and produces the holding jig of this invention. It is a figure which shows schematically the state which hold | gripped the hat-shaped steel sheet pile by the present hat chuck apparatus, (A) is a front view, (B) is a bottom view. It is a figure which shows the holding method of the conventional deformed steel sheet pile. (A) is an example of a deformed steel sheet pile, (B) is a top view with a conventional gripping jig attached, and (C) is a front view.

Explanation of symbols

1, 1a, 1b, 1c Holding jig 1c1-1c4, 1d Auxiliary holding jig 11 Jig web part 12a, 12b Jig flange part 13a, 13b Jig arm part 14a, 14b Jig joint part 15a, 15b Notch Part 17a, 17b, 17c, 17d Welded part 2, 2a, 2b, 2c, 2d Modified steel sheet pile 20A, 20B Half sheet pile 21A, 21B Half sheet pile web 21 Modified sheet pile web 22A, 22B Modified steel sheet pile flange 23A, 23B Modified steel Sheet pile arm 24A, 24B Profile steel sheet pile joint 28 Welded part 3, 3A, 3B, 3C Hat-shaped steel sheet pile (specified shape)
31 Web 32A, 32B Flange 33A, 33B Arm 34A, 34B Joint 4 Hat chuck device (both flange gripping system)
40a, 40b Chuck part 41a, 41b Fixed claw 42a, 42b Movable claw 43a, 43b Fixed claw base 44a, 44b Movable claw base 45 Drive control part 46a, 46b Rotating shaft part 5 Vibro hammer device 6 Hat chuck device (Both arm gripping system) )
7 H-shaped steel 101, 102 Conventional gripping jig

Claims (7)

A pair of chuck portions (40a, 40b) capable of gripping the pair of flanges in the hat-shaped steel sheet pile (3) having a web (31), a pair of flanges (32A, 32B), a pair of arms, and a pair of joints ) Equipped with a hat chuck device (4), a method of gripping a deformed steel sheet pile (2) other than the hat-shaped steel sheet pile (2) or a steel driving member (7),
(A) A pair of jig flange portions (12a, 12b) that can be gripped by the pair of chuck portions of the hat chuck device as well as the pair of flanges of the hat-shaped steel sheet pile, and the pair of jig flange portions Producing a set of integral gripping jigs (1) provided with a connecting portion (11) for connecting
(B) At least a means for bringing the gripping jig and the deformed steel sheet pile or the steel driving member into an integrated state when gripped by the hat chuck device is added, and the deformed steel sheet pile Or a step of installing the gripping jig at the upper end of the steel driving member;
(C) a step of gripping upper end portions of the pair of jig flange portions in the gripping jig by the pair of chuck portions of the hat chuck device, and a deformed steel sheet pile or a steel driving member, Gripping method. A pair of chuck portions (40a, 40b) capable of gripping the pair of arms in the hat-shaped steel sheet pile (3) having a web (31), a pair of flanges (32A, 32B), a pair of arms, and a pair of joints ) Equipped with a hat chuck device (4), a method of gripping a deformed steel sheet pile (2) other than the hat-shaped steel sheet pile (2) or a steel driving member (7),
(A) A pair of jig arm portions (13a, 13b) that can be gripped by the pair of chuck portions of the hat chuck device as well as the pair of arms of the hat-shaped steel sheet pile, and the pair of jig arm portions Producing a set of integral gripping jigs (1) provided with connecting portions (12a, 11, 12b) for connecting
(B) At least a means for bringing the gripping jig and the deformed steel sheet pile or the steel driving member into an integrated state when gripped by the hat chuck device is added, and the deformed steel sheet pile Or a step of installing the gripping jig at the upper end of the steel driving member;
(C) a step of gripping upper end portions of the pair of jig arm portions in the gripping jig by the pair of chuck portions of the hat chuck device, and a deformed steel sheet pile or a steel driving member, Gripping method.   In the step of manufacturing the gripping jig (1), the gripping jig is manufactured by cutting one hat-shaped steel sheet pile into a length that can be gripped by the hat chuck device in the longitudinal direction thereof. The method for gripping a deformed steel sheet pile or a steel driving member according to claim 1 or 2. A pair of chuck portions (40a, 40b) capable of gripping the pair of flanges in the hat-shaped steel sheet pile (3) having a web (31), a pair of flanges (32A, 32B), a pair of arms, and a pair of joints In order to hold the deformed steel sheet pile (2) or the steel driving member (7) other than the hat-shaped steel sheet pile by the hat chuck device (4) provided with a), the upper end portion of the deformed steel sheet pile or the steel driving member A set of integral gripping jigs installed in the
A pair of jig flange parts (12a, 12b) that can be gripped by the pair of chuck parts of the hat chuck device and the pair of jig flange parts are connected to each other equivalent to the pair of flanges of the hat-shaped steel sheet pile. A gripping jig for gripping deformed steel sheet piles or gripping a steel driving member, comprising a connecting portion (11). A pair of chuck portions (40a, 40b) capable of gripping the pair of arms in the hat-shaped steel sheet pile (3) having a web (31), a pair of flanges (32A, 32B), a pair of arms, and a pair of joints In order to hold the deformed steel sheet pile (2) or the steel driving member (7) other than the hat-shaped steel sheet pile by the hat chuck device (4) provided with a), the upper end portion of the deformed steel sheet pile or the steel driving member A set of integral gripping jigs installed in the
A pair of jig arm parts (13a, 13b) that can be gripped by the pair of chuck parts of the hat chuck device and the pair of jig arm parts are connected to the pair of arms of the hat-shaped steel sheet pile. A gripping jig for gripping a deformed steel sheet pile or gripping a steel driving member, comprising a connecting portion (12a, 11, 12b).   A deformed steel sheet pile having a gripping jig, wherein the gripping jig according to claim 4 or 5 is installed and bonded and fixed to an upper end portion thereof.   A steel driving member with a gripping jig, which is a steel driving member, wherein the gripping jig according to claim 4 or 5 is installed and bonded to the upper end portion thereof.

Images