Steel material attaching jig, and steel material installing method

Abstract

To provide a steel material attaching jig which can easily chuck an upper end of a steel material with a chuck provided on a vibro hammer and efficiently perform a work of suspending a steel material.SOLUTION: A steel material attaching jig includes: an erected guide post 2; and a steel material fixing jig 3 attached to the guide post 2 and fixing a steel material I erected on a side of the guide post 2 to the guide post 2. The steel material fixing jig 3 includes: an inner frame 4 disposed at a side of the guide post 2 where the guide post 2 and the steel material I face each other; outer frames 5a and 5b respectively disposed at sides of the guide post 2 and the steel material I opposite the side where the guide post 2 and the steel material I face each other; and a plurality of tie bolts 6, 6 respectively disposed at both sides of the guide post 2 and the steel material I at sides where the guide post 2 and the steel material I are adjacent to each other and are detachably connected to the inner frame 4 and the outer frames 5a and 5b. Multiple steel fixing jigs 3 are attached to the guide posts 2 at intervals.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a steel installation jig for vertically installing steel materials such as steel piles (mainly H-shaped steel piles) and sheet piles, and a method for installing steel materials. When installing steel materials such as H-shaped steel piles and sheet piles with a vibro hammer, the upper end of the steel material can be easily chucked by the chuck provided on the vibro hammer, making it possible to efficiently perform the work of hoisting the steel material. [Background technology]

[0002] The vibro hammer method is a driving method in which a vibro hammer (a vibrating pile driver) is used to transmit forced vibrations to steel materials such as steel piles and sheet piles, rapidly and temporarily reducing the resistance and frictional resistance at the tip of the pile and driving it into the ground.

[0003] In general, a pile or sheet pile lying on the ground is raised vertically, the top end of the pile is chucked by a chuck provided on the vibro hammer, and the pile is then hung in that state to the driving position. The vibro hammer is then operated to drive the pile. The vibro hammer is used by hanging it from a mobile crane or the like.

[0004] Incidentally, the work of erecting and setting steel piles or sheet piles lying on the ground is generally carried out using a crawler crane, and at that time, a lifting hole through which the lifting wire of the crawler crane can be passed is provided at the upper end of the steel pile.

[0005] In particular, in the vibro-combined pressing method (LRB machine) that combines hydraulic pressing using an extendable leader with high-frequency hydraulic variable vibro, two guide chains attached to a chuck equipped on the vibro hammer are used, and two hanging holes for passing the guide chains through are provided at the upper end of the steel pile.

[0006] Also, for example, Patent Document 1 discloses an invention of a driving ruler and a method of driving pile material that can improve the driving accuracy of pile material. Briefly, the invention includes a pair of first guide frames 20 that are installed between a plurality of first receiving materials 13 of the support part 10 and slidably hold the pile material 2 along the driving direction of the pile material 2, and a pair of second guide frames 30 that are installed between a plurality of second receiving materials 14 of the support part 10 and slidably hold the pile material 2 along the driving direction of the pile material 2.

[0007] In addition, by guiding the pile material 2 vertically while driving it into the ground with a vibrating pile driver 3 such as a vibro hammer, the pile material can be slidably clamped at two points along its length, which reliably prevents the pile material from shaking when driven by the vibrating pile driver. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2009-264003 A [Patent Document 2] Japanese Patent Application Publication No. 60-192027 Summary of the Invention [Problem to be solved by the invention]

[0009] However, the task of lifting steel materials lying on the ground with the lifting wires or guide chains not only entails danger as the upper ends of the steel materials swing sideways during the task, but also makes it difficult to chuck the upper ends of the steel materials with the chucks on the vibro hammer, making the task of lifting the steel materials extremely inefficient.

[0010] In particular, with the vibratory press-in method (LRB machine), it is necessary to make two holes at the upper end of the steel material to pass the guide chain through, which posed the problem of an unavoidable reduction in the strength of the steel material due to cross-sectional loss.

[0011] The present invention has been made to solve the above-mentioned problems, and aims to provide a steel installation jig and a steel installation method which can fix steel materials vertically when driving steel materials such as H-shaped steel piles and sheet piles with a vibro hammer, and which allows the upper end of the steel material to be easily chucked by a chuck provided on the vibro hammer, thereby enabling the work of hoisting the steel material to be carried out efficiently. [Means for solving the problem]

[0012] The present invention is a steel erection jig for erecting steel material, comprising an erected guide pillar, and a steel fixing jig that is attached to the guide pillar and fixes the steel material erected on the side of the guide pillar to the guide pillar, wherein the steel fixing jig comprises an inner frame arranged on the side of the guide pillar on the side where the guide pillar and the steel material face each other, a guide pillar-side outer frame and a steel material-side outer frame arranged on the sides of the guide pillar and the steel material opposite the side where the guide pillar and the steel material face each other, and a plurality of tie bolts arranged on both sides of the guide pillar and the steel material on the side where the guide pillar and the steel material are adjacent to each other, and are detachably connected to both ends of the inner frame and the guide pillar-side and steel material-side outer frames, respectively.

[0013] The steel material fixing jigs are attached at intervals in the axial direction (vertical direction) of the guide support, so that even long steel materials can be fixed vertically along the guide support.

[0014] The steel fixing jig comprises a steel holding jig attached to the side of the guide pillar facing the steel material and holding the steel material, and a steel fixing bolt attached to the steel holding jig and cooperating with the steel holding jig to fix the steel material to the guide pillar, and the steel holding jig may be formed in an approximately C-shape when viewed from above, consisting of an attachment portion attached to the guide pillar and steel holding arm portions formed on both side edge portions of the attachment portion and protruding from both sides of the steel material; in particular, by forming the steel holding jig into an approximately C-shape when viewed from above, the steel material can be easily temporarily fixed to the side of the guide pillar.

[0015] Furthermore, if the steel material holding arm portions are formed in multiple stages at intervals on both sides of the steel material, even long steel materials can be held upright in a stable state.

[0016] Another steel installation jig of the present invention includes an erected guide pillar and a steel fixing jig that fixes a long pile erected on the side of the guide pillar to the guide pillar, and the steel fixing jig includes a fixing jig body and fixing bolts that cooperate to clamp both of the opposing flanges of the guide pillar and the long pile, respectively.

[0017] The fixing jig main body may, for example, have a pair of clamping portions protruding from the sides opposite the opposing sides of the opposing flanges of the guide support and the long pile, and is formed in an approximately U-shape when viewed from above.

[0018] The fixing bolt can be screwed into one of the clamping portions and cooperate with the other clamping portion to clamp both the flanges of the guide post and the long pile, thereby fixing the long pile to the guide post.

[0019] Furthermore, it includes a self - standing jig body and a plurality of steel - material fixing jigs that are attached to the jig body and fix a steel material erected through the jig body to the jig body. The jig body includes a pair of main bases, a connecting base disposed between the main bases and connecting the main bases to each other, a pair of columns respectively erected on the pair of main bases, and a horizontal beam erected along the connecting base between the columns. The steel - material fixing jigs are respectively attached to both side portions on the side where the connecting base and the horizontal beam face each other, facing each other in the axial direction of the connecting base and the horizontal beam, and may have play - fitting grooves in which edge portions of the steel material erected through between the connecting base and the horizontal beam are play - fitted on side portions on the facing side of the steel - material fixing jigs.

Advantages of the Invention

[0020] In the present invention, when driving steel materials such as H - shaped steel piles and sheet piles with a vibro - hammer, since the steel materials such as H - shaped steel piles and sheet piles can be vertically erected, the upper end portion of the steel material can be easily chucked by the chuck provided in the vibro - hammer, and the work of lifting the steel material can be carried out extremely efficiently.

Brief Description of the Drawings

[0021] [Figure 1] An embodiment of the jig for temporarily erecting a steel material of the present invention is illustrated. Fig. (a) is a front view, and Fig. (b) is a cross - sectional view taken along line a - a in Fig. 1(a). [Diagram 2] Figs. (a) and (c) are side views of the jig for erecting a steel material shown in Fig. 1, and Fig. (b) is a cross - sectional view taken along line b - b in Fig. 2(a). [Diagram 3] Figs. (a) - (e) are explanatory diagrams showing the procedure of the construction method of an H - shaped steel pile using the jig for erecting a steel material shown in Figs. 1 and 2. [Figure 4] Another embodiment of the jig for erecting a steel material of the present invention is illustrated. Fig. (a) is a front view, and Fig. (b) is a cross - sectional view taken along line c - c in Fig. 4(a). [Diagram 5]Figures (a) and (b) illustrate a modified example of the steel material holder included in the jig for standing steel materials shown in Fig. 4, and are side views of the steel material holding arm portion. [Figure 6] Figures (a)-(e) are explanatory diagrams showing the procedure of the construction method of the H-shaped steel pile using the jig for standing steel materials shown in Figs. 4 and 5. [Figure 7] Another embodiment of the jig for standing steel materials of the present invention is illustrated. Fig. (a) is a front view, and Fig. (b) is a cross-sectional view taken along line d-d in Fig. 7(a). [Figure 8] Another embodiment of the jig for standing steel materials of the present invention is illustrated, and is a plan view. [Figure 9] It is the jig for standing steel materials shown in Fig. 8. Fig. (a) is a cross-sectional view taken along line e-e in Fig. 8, and Fig. (b) is a cross-sectional view taken along line f-f in Fig. 9(a). [Figure 10] It is a plan view showing another embodiment of the jig for standing steel materials of the present invention.

Mode for Carrying Out the Invention

[0022] Figs. 1-3 illustrate one embodiment of the present invention. In the figures, the jig 1 for standing steel materials includes a guide column 2 erected on the ground, and a plurality of steel material fixing jigs 3 attached to the guide column 2 and fixing a steel material (hereinafter referred to as "H-shaped steel pile") I erected on the side of the guide column 2 to the guide column 2.

[0023] The guide column 2 is formed of a shaped steel such as an H-shaped steel, and is vertically erected by being driven into the ground. Further, the guide column 2 is driven to a depth such that it can be pulled out and removed relatively easily. Also, it is driven to a height (the height of the part rising above the ground) at which the H-shaped steel pile I can be erected in a stable state. Furthermore, in principle, the H-shaped steel pile I driven as a permanent pile on-site is used as the guide column 2.

[0024] The steel fixing jigs 3 are attached to the guide pillar 2 at intervals in the axial direction (vertical direction) of the guide pillar 2, and in particular at intervals that allow the H-shaped steel piles I to be erected in a stably state.

[0025] The steel material fixing jig 3 also includes an inner frame 4, outer frames 5a, 5b on the guide pillar side and the steel material side, a plurality of tie bolts 6, 6, a plurality of end fastening nuts 7a, 7b and middle fastening nuts 8, 8.

[0026] The inner frame 4 is arranged horizontally on the side of the guide pillar 2, on the side where the guide pillar 2 and the H-shaped steel pile I face each other, in a direction perpendicular to the axes of the guide pillar 2 and the H-shaped steel pile I.

[0027] The outer frames 5a, 5b are disposed on the sides of the guide pillar 2 and the H-shaped steel pile I, opposite to the side where the guide pillar 2 and the H-shaped steel pile I face each other, parallel to the inner frame 4. The inner frame 4 and the outer frames 5a, 5b are formed from shaped steel such as angle bars and channel steel as well as from steel strips.

[0028] The tie bolts 6, 6 are arranged parallel to the axis perpendicular direction of the guide pillar 2 and the H-shaped steel pile I on both sides where the guide pillar 2 and the H-shaped steel pile I are adjacent to each other. The tie bolts 6, 6 also pass continuously through the through holes 4a, 4a and through holes 5c, 5c formed at both ends of the inner frame 4 and the outer frame 5a, 5b, respectively.

[0029] Then, end tightening nuts 7a are tightened to the ends of the tie bolts 6,6 facing the guide pillar 2, and intermediate tightening nuts 8,8 are tightened to the intermediate parts of the tie bolts 6,6, so that the steel fixing jigs 3,3 of each stage are fixed by tightly constraining the periphery of the guide pillar 2.

[0030] In addition, by tightening the end tightening nut 7b to the end of the tie bolts 6, 6 on the H-shaped steel pile I side, the H-shaped steel pile I attached to the side of the guide pillar 2 is fixed to the side of the guide pillar 2 by being restrained around the inner frame 4, the outer frame 5b on the H-shaped steel pile I side, and the tie bolts 6, 6 on both sides.

[0031] It is possible to vertically attach the H-shaped steel pile I to the side of the guide pillar 2 without tightly restraining the H-shaped steel pile I with the inner frame 4 and the outer frame 5b on the H-shaped steel pile I side and the tie bolts 6, 6 on both sides. However, by tightly tightening the end tightening nuts 7, 7 to firmly fix the H-shaped steel pile I to the guide pillar 2, the H-shaped steel pile I can be vertically attached and prevented from wobbling, and the upper end of the H-shaped steel pile I can be reliably and easily chucked by the chuck 9a provided on the vibro hammer 9.

[0032] Alternatively, the outer frames 5b, 5b may be attached in advance to the ends of the tie bolts 6, 6 on the H-shaped steel pile I side, and a rectangular frame may be formed using the outer frames 5b and inner frames 4 of each stage and the tie bolts 6, 6 on both sides into which the H-shaped steel pile I can be erected. The H-shaped steel pile I may then be erected into the frame from above, and the end tightening nuts 7b, 7b on the H-shaped steel pile I side may then be tightly tightened.

[0033] The H-shaped steel pile I attached to the side of the guide pillar 2 is chucked at its upper end by the chuck 9a provided on the vibro hammer 9 and held vertically, and the end tightening nuts 7b, 7b on the H-shaped steel pile I side are loosened to release the fixation, and then the pile can be hung from the side of the guide pillar 2 and carried out.

[0034] Furthermore, by forming recesses 4b and recesses 5d instead of through holes 4a and 5c at the ends of the inner frame 4 and the outer frames 5a and 5b, respectively, the inner frame 4 and the outer frames 5a, 5b can be attached and removed extremely easily (see Figure 2(c)).

[0035] Next, a method of driving an H-shaped steel pile I using the steel erection jig 1 with a vibro hammer 9 in such a configuration will be described (see Figs. 3(a) to (e)).

[0036] (1) First, a guide pillar 2 is driven into the ground at a point on the site where the H-shaped steel pile I is to be driven (Figure 3(a)), and a steel fixing jig 3 is attached to the guide pillar 2 (Figure 3(b)). In this case, the H-shaped steel pile I for permanent installation, which is driven first, is driven halfway to a depth to serve as a guide pillar 2, and is driven to an appropriate height according to the length of the H-shaped steel pile I to be driven as a permanent pile. Furthermore, multiple steel fixing jigs 3 are attached at appropriate intervals so that the H-shaped steel pile I can be securely fixed to the guide pillar 2.

[0037] (2) Next, the inner frame 4, the outer frame 5a on the guide support 2 side, and the tie bolts 6, 6 are attached to the side of the guide support 2. The inner frame 4 and the outer frame 5a are arranged parallel to the axis perpendicular to the guide pillar 2, and the tie bolts 6, 6 are arranged parallel to the axis perpendicular to the guide pillar 2 and pass through the through holes 4a and 5c of the inner frame 4 and the outer frame 5a. Then, an end fastening nut 7a and a middle fastening nut 8 are fastened to the end and middle of each tie bolt 6, 6 on the guide pillar 2 side, respectively.

[0038] (3) Next, using heavy machinery such as a crawler crane, the H-shaped steel pile I lying on the ground is raised, hung, and vertically attached to the side of the guide pillar 2 (Fig. 3(c)). Then, the outer frame 5b of the H-shaped steel pile I side is attached to the side of the H-shaped steel pile I, and the end tightening nuts 7b, 7b are tightly tightened to the ends of the tie bolts 6, 6 on the H-shaped steel pile I side, thereby fixing the H-shaped steel pile I to the side of the guide pillar 2 (Fig. 3(d)). This allows the H-shaped steel pile I to be firmly fixed to the guide pillar 2, and makes it possible to prevent wobbling, especially at the upper end.

[0039] (4) Next, the vibro hammer 9 is moved directly above the H-shaped steel pile I, and the upper end of the H-shaped steel pile I is chucked and held down by the chuck 9a of the vibro hammer 9. Then, the end fastening nuts 7b, 7b on the H-shaped steel pile I side are loosened to release the fixation, and the H-shaped steel pile I is then lifted from the side of the guide support 2, carried out, and lifted into the driving position. Then, the vibro hammer 9 is operated to drive the pile into the ground.

[0040] Furthermore, in parallel with the driving of the H-shaped steel pile I by the vibro hammer 9, the next H-shaped steel pile I to be driven is erected on the side of the guide pillar 2 and fixed to the side of the guide pillar 2 by the steel erection jig 3, thereby eliminating the waiting time of the vibro hammer 9 and making it possible to drive multiple H-shaped steel piles I in sequence very efficiently.

[0041] Also, when the driving work of the H-shaped steel piles (i) progresses and the point where the H-shaped steel piles (i) are driven becomes far from the installation point of the guide pillar 2, the guide pillar 2 is moved closer to the driving point of the H-shaped steel piles (i) and the steel fixing jig 3 is reattached. In this case, by replacing the steel fixing jig 3 with the nearest H-shaped steel pile (i), the transport distance of the H-shaped steel piles (i) by heavy machinery becomes shorter, and the driving work of the H-shaped steel piles (i) can be performed extremely efficiently.

[0042] (5) Once all planned H-shaped steel piles I have been driven in this way, the steel fixing jig 3 (inner frame 4, outer frames 5a, 5b and tie bolts 6, 6) are removed from the guide support 2, and the guide support 2 is then driven to the end as a permanent pile, completing the pile driving work.

[0043] In addition, the illustrated embodiment is described as an example of driving H-shaped steel piles as steel materials, but it can also be used to erect sheet piles, and the cross-sectional shape of the sheet piles is not particularly limited.

[0044] 4 to 6 show another embodiment of the present invention. In the figures, a steel material installation jig 1 is provided with a guide post 2 erected on the ground and a steel material fixing jig 10 that is attached to the guide post 2 and fixes an H-shaped steel pile I erected on the side of the guide post 2 to the guide post 2.

[0045] The guide pillars described in the embodiment of Fig. 1-3 are used as the guide pillars 2. In principle, H-shaped steel piles A that are driven into the site as permanent piles are used as the guide pillars 2.

[0046] The steel fixing jig 10 is attached to the side of the guide pillar 2 facing the H-shaped steel pile I, and is equipped with a steel holder 11 that holds the H-shaped steel pile I that is erected on the side of the guide pillar 2, and a steel fixing bolt 12 and steel fixing nuts 13, 13 that are attached to the steel holder 11 and cooperate with the steel holder 11 to vertically fix the H-shaped steel pile I to the side of the guide pillar 2.

[0047] The steel material holder 11 is formed in an approximately U-shape in plan view and comprises an attachment portion 11a which is attached to the guide support 2 by welding or by attachment bolts, and a pair of steel material holding arm portions 11b, 11b which are formed on both left and right edge ends of the attachment portion 11a and protrude horizontally from both sides of the H-shaped steel pile I in a direction perpendicular to the axis of the H-shaped steel pile I.

[0048] The pair of steel material holding arm portions 11b, 11b are formed at intervals in the axial direction (vertical direction) of the guide support 2, and are formed in multiple pairs at appropriate intervals in particular so as to stably fix the H-shaped steel piles I.

[0049] The steel material holding bolt 12 is horizontally stretched between the tips of the left and right steel material holding arms 11b, 11b of each stage, and both ends pass through through holes 11c, 11c formed at the tips of the steel material holding arms 11b, 11b. Steel material holding nuts 13, 13 are fastened to both ends of the steel material holding bolt 12 of each stage. By tightly fastening the steel material holding nuts 13, 13 at both ends, the H-shaped steel pile I erected on the side of the guide column 2 is fixed vertically to the side of the guide column 2 by being restrained on the periphery by the steel holders 11 of each stage, the steel material holding bolt 12, and the holding nuts 13.

[0050] In this case, if the steel holding arm portions 11b, 11b are formed at an appropriate interval in the vertical direction, the H-shaped steel pile I can be erected vertically without being tightly restrained by the steel holder 11, steel holding bolt 12 and retaining nut 13. However, by tightly tightening the steel holding nuts 13, 13 to restrain and firmly fix the H-shaped steel pile I, the H-shaped steel pile I can be erected vertically and wobbling of the upper end in particular can be prevented, and the upper end of the H-shaped steel pile I can be securely gripped by the chuck 9a provided on the barblow hammer 9.

[0051] The H-shaped steel pile I thus fixed to the side of the guide pillar 2 can be lifted and carried out from the side of the guide pillar 2 by grasping and holding down its upper end with the chuck 9a provided on the vibro hammer 9 and loosening the steel retaining nuts 13, 13 to release the restraint.

[0052] Furthermore, if the left and right steel material holding arm portions 11b, 11b are attached to the side of the mounting portion 11a so that they can be raised or lowered (rotated vertically), then when the steel material erection jig 1 is stored or transported, the left and right steel material holding arm portions 11b, 11b can be stored along the guide pillar 2, making it easier to handle the steel material erection jig 1 (see Figure 5(a)).

[0053] Furthermore, by forming recesses 11d, 11d instead of through holes 11c, 11c at the tips of the steel-holding arms 11b, 11b, the steel-holding bolt 12 can be attached and removed extremely easily (see FIG. 5(b)).

[0054] Next, a method for driving an H-shaped steel pile I into the ground using the steel erection jig 1 with a vibro hammer 9 will be described with reference to Figs. 6(a)-(e) below.

[0055] (1) First, the guide post 2 is lightly driven into a certain point on the site where multiple H-shaped steel piles (i) are to be driven, and set up so that it can stand on its own (Fig. 6(a)), and a steel material holder 11 is attached to the guide post 2 (Fig. 6(b)). Then, the guide post 2 is driven into the ground to a specified depth (Fig. 6(c)). In this case, the first permanent H-shaped steel pile I is driven halfway to a depth to serve as a guide pillar 2, and the guide pillar 2 is driven to an appropriate height according to the length of the H-shaped steel pile I.

[0056] (2) Next, using heavy machinery such as a crawler crane, the H-shaped steel pile I lying on the ground is raised and vertically set into the left and right steel-retaining arm portions 11b, 11b of the steel retainer 11 (FIG. 6(d)). Then, the steel-retaining bolt 12 is stretched between the tips of the left and right steel-retaining arm portions 11b, 11b, and both ends of each steel-retaining bolt 12 are inserted into the through-holes 11c, 11c at the tips of the arms. Then, the steel-retaining nuts 13, 13 are fastened to both ends of each steel-retaining bolt 12, respectively, to fix the H-shaped steel pile I to the side of the guide pillar 2.

[0057] (3) Next, the upper end of the H-shaped steel pile I is gripped and held down by the chuck 9a of the vibro hammer 9, and the steel material holding nuts 13, 13 fastened to both ends of the steel material holding bolt 12 are loosened to release the fixation, after which the H-shaped steel pile I is lifted from the side of the guide pillar 2 and carried out, and then lifted into the driving position. Then, the vibro hammer 9 is operated to drive the pile.

[0058] In addition, by setting the next H-shaped steel pile I to be driven against the side of the guide pillar 2 and fixing it to the guide pillar 2 in parallel with the driving of the H-shaped steel pile I by the vibro hammer 9, it is possible to drive multiple H-shaped steel piles I in succession and efficiently.

[0059] In addition, when the driving work progresses and the driving point of the H-shaped steel pile I becomes far from the installation point of the guide pillar 2, the guide pillar 2 is moved closer to the driving point of the H-shaped steel pile I, or the steel material holder 11 is replaced with the nearest H-shaped steel pile I. This is preferable because it shortens the transport distance of the H-shaped steel pile I and makes it possible to drive the H-shaped steel pile I very efficiently.

[0060] (4) Once the driving of all the planned H-shaped steel piles I has been completed in this manner, the steel holders 11 are removed from the H-shaped steel piles I used as guide supports 2, and the H-shaped steel piles I used as guide supports 2 are driven to the end, completing the pile driving work.

[0061] In the embodiment, the steel material is described using an H-shaped steel pile as an example, but the steel material can also be used to install sheet piles, and the cross-sectional shape of the sheet pile is not particularly limited.

[0062] Figures 7(a) and (b) show another embodiment of the present invention, in which an H-shaped steel pile attached to the side of a guide pillar can be fixed and released to the guide pillar using a simple steel fixing jig.

[0063] In particular, the steel fixing jig 17 comprises a fixing jig body 18 having a pair of clamping portions 18a, 18a that protrude symmetrically from the side opposite to the opposing sides of both opposing flanges 2a and ha that the guide support 2 and H-shaped steel pile I respectively have, and a fixing bolt 19 that is screwed into one of the clamping portions 18a and cooperates with the other clamping portion 18a to clamp both flanges 2a and ha.

[0064] The fixing jig body 18 is formed in a generally U-shape in plan view, and one or more fixing bolts 19 are attached in the width direction and / or the up-down direction of the flanges 2a and 2b.

[0065] In addition, multiple steel fixing jigs 17 are attached at intervals in the axial direction (up and down direction) of the guide pillar 2 and the H-shaped steel pile I on both sides of the flanges 2a and H of both the guide pillar 2 and the H-shaped steel pile I.

[0066] 8 and 9 also illustrate another embodiment of the present invention, which is particularly used for setting up H-shaped steel piles, and which is easy to install and can be moved freely around the site.

[0067] In the figure, the steel erection jig 1 comprises a steel erection jig main body (hereinafter referred to as the "jig main body") 14 which is assembled so that it can stand on its own, and a number of steel fixing jigs (hereinafter referred to as the "fixing jigs") 15, 15 which are attached to the jig main body 14 and fix H-shaped steel piles I which are erected by passing vertically through the jig main body 14 to the jig main body 14, and is placed on a steel plate 16.

[0068] The jig body 14 comprises a pair of main bases 14a, 14a arranged parallel to the pile driver R in a position facing the pile driver R, a connecting base 14b arranged between the main bases 14a, 14a and connecting the main bases 14a, 14a to each other, supports 14c, 14c erected on the main bases 14a, 14a, respectively, positioned slightly toward the pile driver R, and a laying beam 14d laid between the ends of the main bases 14a, 14a on the opposite side.

[0069] In addition, upper and lower horizontal beams 14e, 14e are erected at intervals in the axial direction (up and down direction) of the pillars 14c, 14c on the side of the pile driver B between the pillars 14c, 14c, and diagonal members 14f, 14f are respectively erected between the pillars 14c, 14c and the floor beam 14d. In particular, an opening A for erecting an H-shaped steel pile I is provided vertically between the connecting base 14b and the upper and lower horizontal beams 14e, 14e.

[0070] Each component that constitutes the jig body 14, such as the main base 14a, is formed from structural steel such as H-shaped steel or square steel pipes, and is assembled by welding or multiple fastening bolts. In particular, each component assembled by the fastening bolts is joined so that it can be disassembled.

[0071] The fixing jig 15 is formed in an approximately U-shape when viewed from above, and two of them are paired and attached to the sides of the connecting base 14b and the upper and lower horizontal beams 14e, 14e within the opening A, facing each other in the axial direction of the connecting base 14b and the upper and lower horizontal beams 14e, 14e, respectively.

[0072] In such a configuration, the H-shaped steel pile I is provisionally fixed to the jig body 14 by engaging the edge ends of the left and right flanges with the opposing fixing jigs 15, 15, respectively, and being erected into the opening A.

[0073] Furthermore, if the fixing jigs 15, 15 are installed so that their positions can be changed in the axial direction of the connecting base 14b and the upper and lower horizontal beams 14e, 14e, and if the connecting base 14b and / or the supports 14c, 14c are installed so that their positions can be changed in the axial direction of the main bases 14a, 14a, then adjustments can be made freely even if the cross-sectional dimensions of the H-shaped steel piles I are different.

[0074] FIG. 10 shows a simplified structure of the steel installation jig shown in FIGS. 8 and 9, which allows H-shaped steel piles I to be installed on the sides of the upper and lower horizontal beams 14e and easily fixed in place.

[0075] Reference numerals 15, 15 denote fixing jigs for fixing H-shaped steel piles I attached to the sides of the upper and lower horizontal beams 14e, 14e to the jig body 14.

[0076] The fixing jigs 15, 15 are formed in a substantially U-shape in plan view, and two of them are attached as a pair to the side portions of the upper and lower horizontal beams 14e, 14e so as to face each other.

[0077] The H-shaped steel pile I, which is attached to the side of the upper and lower horizontal beams 14e, 14e, is temporarily fixed to the side of the jig body 4 by engaging both edge ends of the flange that abuts the side of the upper and lower horizontal beams 14e, 14e with the fixing jigs 15, 15.

[0078] Furthermore, if the fixing jigs 15, 15 are attached so that their positions can be changed in the axial direction of the upper and lower horizontal beams 14e, 14e, they can be freely adjusted even if the cross-sectional dimensions of the H-shaped steel piles I are different. [Industrial Applicability]

[0079] According to the present invention, when using a vibro hammer to drive steel materials such as H-shaped steel piles and sheet piles, the upper end of the steel material can be easily chucked by the chuck provided on the vibro hammer, making the work of hoisting the steel material extremely efficient. [Explanation of symbols]

[0080] 1 Steel material installation jig, 2 Guide support, 2a Flange, 3 steel material fixing jig, 4 inner frame, 4a through hole, 5a: outer frame on the guide support side; 5b: outer frame on the steel side; 5c through hole, 5d recess, 6 tie bolt, 7a, 7b end fastening nuts, 8 middle fastening nut, 9 Vibro hammer, 9a Chuck, 10 Steel fixing jig, 11 Steel holder, 11a fixed part, 11b steel material holding arm portion, 11c through hole, 11d recess, 12 Steel fixing bolt (steel fixing frame), 13 Steel retaining nut, 14: main body of erection jig, 14a: main base, 14b: connecting base, 14c: support, 14d: girders, 14e: horizontal beams, 14f: diagonal members, 15 Steel fixture, 16 Base plate, 17 steel material fixing jig, 18 fixing jig body, 18a clamping portion, 19 Fixing bolts, H-shaped steel piles (steel), pile driver, (c) Flange of H-shaped steel pile.

Claims

1. A steel erection jig for erecting steel material, comprising: an erected guide pillar; and a steel fixing jig that is attached to the guide pillar and fixes the steel material erected on the side of the guide pillar to the guide pillar, wherein the steel fixing jig comprises an inner frame arranged on the side of the guide pillar on which the guide pillar and the steel material face each other; an outer frame on the guide pillar side and an outer frame on the steel material side, respectively, arranged on the sides of the guide pillar and the steel material on the opposite side to the side where the guide pillar and the steel material face each other; and a plurality of tie bolts arranged on both sides of the guide pillar and the steel material on the side where the guide pillar and the steel material are adjacent to each other, and each of the tie bolts is detachably connected to the inner frame and the outer frame on the guide pillar side and the steel material side, respectively.

2. 2. A steel material installation jig according to claim 1, wherein a plurality of said steel material fixing jigs are attached at intervals in the axial direction of said guide support.

3. A steel erection jig for erecting steel material, comprising: an erected guide pillar; and a steel fixing jig attached to the guide pillar and fixing the steel material erected on the side of the guide pillar to the guide pillar, wherein the steel fixing jig is attached to the side of the guide pillar and comprises a steel holding jig for holding the steel material; and a steel fixing frame attached to the steel holding jig and cooperating with the steel holding jig to fix the steel material to the guide pillar, wherein the steel holding jig is formed in an approximately U-shape in plan view from an attachment portion attached to the guide pillar and steel holding arm portions formed on both sides of the attachment portion and holding both sides of the steel material.

4. 4. A steel material installation jig according to claim 3, wherein the steel material gripping arm portion is attached to the guide pillar at intervals in the axial direction of the guide pillar.

5. A steel erection jig for erecting steel materials, comprising an erected guide pillar and a steel fixing jig for fixing a long pile erected on the side of the guide pillar to the guide pillar, wherein the steel fixing jig comprises a fixing jig body and fixing bolts which cooperate to clamp both of the opposing flanges of the guide pillar and the long pile, respectively.

6. A steel erection jig for erecting steel materials, comprising: a self-supporting jig body; and a plurality of steel fixing jigs that are attached to the jig body and fix the steel materials erected by passing through the jig body to the jig body, wherein the jig body comprises a pair of main bases, a connecting base that is arranged between the main bases and connects the main bases, a pair of pillars that are erected on each of the pair of main bases, and a horizontal beam that is erected along the connecting bases between the pillars, and the steel fixing jigs are attached to both sides of the connecting base and the horizontal beam facing each other, facing each other in the axial direction of the connecting base and the horizontal beam, and a loose-fitting groove is provided on the opposing side of the steel fixing jig into which the edge ends of the steel materials erected by passing through the connecting base and the horizontal beam fit loosely.

7. a steel material fixing jig comprising an upright guide pillar and a steel material fixing jig attached to the guide pillar and fixing a steel material uprighted on a side of the guide pillar to the guide pillar, the steel material fixing jig comprising an inner frame arranged on the side of the guide pillar on the side where the guide pillar and the steel material face each other, a guide pillar-side outer frame and a steel material-side outer frame arranged on the side of the guide pillar and the side of the steel material, respectively, on the opposite side to the side where the guide pillar and the steel material face each other, and a plurality of tie bolts arranged on both sides of the guide pillar and the steel material on the side where the guide pillar and the steel material are adjacent to each other and removably connected to the inner frame and the outer frame, respectively, and a vibro hammer; (1) The process of driving the guide post into the ground and erecting it at a certain point within the site. (2) A process of placing the inner frame on the side of the guide pillar where the guide pillar and the steel material face each other, and placing the outer frame of the guide pillar on the side of the guide pillar opposite the side where the guide pillar and the steel material face each other. (3) A process of placing the tie bolts on both sides of the guide pillar and the steel material on the side where the guide pillar and the steel material are adjacent to each other, and connecting them to the inner frame and the outer frame on the guide pillar side, respectively. (4) A step of attaching the steel material to the side of the guide pillar. (5) A process of placing an outer frame of the steel material on the side of the steel material opposite the side where the guide pillar and the steel material face each other, and connecting it to the tie bolt to fix the steel material to the guide pillar. (6) A step of chucking the upper end of the steel material with a chuck provided on the vibro hammer. (7) A process of removing the outer frame arranged on the side of the steel material to release the fixation of the steel material. (8) A process in which the steel material is hoisted to a casting position by the vibro hammer and cast.

8. a steel erection jig comprising a guide pillar to be erected, a steel fixing jig attached to the guide pillar and fixing steel material erected on the side of the guide pillar to the guide pillar, the steel fixing jig being attached to the side of the guide pillar and comprising a steel holding jig for holding the steel material, and a steel fixing frame attached to the steel holding jig and cooperating with the steel holding jig to fix the steel material to the guide pillar, and a method of pouring steel material using a vibro hammer, the method comprising the following steps: (1) The process of driving the guide post into the ground and erecting it at a certain point within the site. (2) A step of attaching the steel material holding jig to the guide support. (3) A process of attaching the steel material to the side of the guide pillar and holding it in the steel material jig. (4) A process of attaching the steel fixing frame to the steel jig and fixing the steel to the side of the guide support by the steel gripper and the fixing frame. (5) A step of chucking the upper end of the steel material with a chuck provided on the vibro hammer. (6) A step of loosening the fixing frame to release the fixation of the steel material. (7) A process of hoisting the steel material into the casting position using the vibro hammer and casting the steel material.

9. 9. The method for driving steel materials according to claim 7 or 8, wherein the guide pillar is a steel material to be driven as a permanent pile.

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