JP2023007681A - Receiving structure of lower construction material for steel pipe pile, and receiving metal fitting of lower construction material for steel pipe pile - Google Patents

Abstract

To provide a receiving structure of lower construction materials and a receiving metal fitting of lower construction materials for steel pipe piles in which lower construction materials such as horizontal connector materials can be installed on and removed from steel pipe piles as a working platform without using fire.SOLUTION: A horizontal connector material 2 is stretched between steel pipe piles 1, 1 as a working platform, and its both ends are supported by the steel pipe piles 1, 1 via receiving metal fittings 4, 4. The receiving metal fitting 4 includes: a pair of upper and lower clamps 5, 5 gripping the steel pipe pile 1; and brackets 6, 6 attached to side portions of the upper and lower clamps 5, 5 and supporting the ends of the horizontal connector material 2. The clamp 5 comprises: a pair of circular arc bodies 7, 7 formed in a semicircular shape along an outer peripheral face of the steel pipe pile 1; a connection pin 8 connecting ends at one end side of the circular arc bodies 7, 7 with each other so as to freely rotate; and a connection bolt 9 connecting ends at the other side of the circular arc bodies 7, 7 so as to be separated. The brackets 6, 6 are attached to side portions of the circular arc bodies 7, 7 so as to vertically face each other. The ends of the horizontal connector material 2 is joined between the brackets 6, 6.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a steel pipe pile lower work material receiving structure and a steel pipe pile lower work material receiving fitting. It is used to support the ends of lower working materials such as timbers, struts, horizontal braces, vertical braces, etc., and the ends of these lower working materials are attached to steel pipe piles without using fire such as welding or gas cutting. It is designed to be easily connected and removed.

In the field of construction and civil engineering, excavation (root cutting) work is carried out prior to the main construction work. is built, and the earth retaining shoring to support the earth retaining wall is temporarily installed inside it (see Fig. 1).

In addition, a temporary gantry is generally constructed on the inside of the earth retaining wall for the purpose of securing a work space for construction machinery and a space for temporary storage of various materials together with the earth retaining shoring (see Fig. 1).

In Fig. 1, the earth retaining wall is constructed with earth retaining piles, sheet piles, etc., and the earth retaining shoring is constructed with wales placed along the earth retaining wall and struts built inside them. , especially long-span struts are supported by shelf piles (supporting piles).

Temporary gantry is installed at intervals in the girder direction and the beam span (span) direction. It is constructed by installing horizontal ties to prevent swaying, etc., and horizontal and vertical braces to prevent swaying of the gantry.

In particular, H-section steel is mainly used for substructure materials such as horizontal ties and support materials such as struts. Gas cutters are mainly used.

However, installation and removal of substructures and struts that use fire, such as welding and gas cutting, require skill, and removal by gas cutting generates a large amount of steel scrap, which is extremely uneconomical. rice field. In addition, in any method, it is necessary to pay sufficient attention to fire, etc. in places where there are combustible materials in the surroundings.

For this reason, in recent years, various methods of installing and removing substructure materials such as struts and horizontal ties on gantry piles and shelf piles without using fire have been studied. With the increasing use of steel pipe piles, it was desired to develop a method for installing and removing struts and substructures without using fire.

For example, Patent Literature 1 discloses an invention of an earth retaining bracket for installing a wale on an earth retaining pile. The earth retaining bracket includes an upper member, a vertical member and a diagonal member, and is attached to the earth retaining pile by a bolt that passes through the bolt through hole of the vertical member and is screwed into a screw hole provided in the earth retaining pile, The wale is laid over the upper member.

In addition, Patent Document 2 discloses an invention of a reinforcement method for a temporary pier substructure in which adjacent supporting piles are connected and reinforced by reinforcing members erected in the transverse direction or longitudinal direction of the bridge axis, Specifically, the ends of the reinforcement are connected to the support piles by annular clamps.

Japanese Patent Application Laid-Open No. 2020-111981 Patent No. 6649917

However, since the earth retaining bracket of Patent Document 1 is attached by passing a bolt through a screw hole provided in the earth retaining pile, it is necessary to form a screw hole in the earth retaining pile, and the bracket is bolted to the earth retaining pile. When installing, there was a risk that the screw holes would be clogged with earth and sand during the installation of the earth retaining piles, making it impossible to tighten the bolts smoothly.

In addition, the reinforcing material of Patent Document 2 is a member that simply connects and reinforces supporting piles adjacent to each other in the transverse direction or longitudinal direction of the bridge axis, and supports lower construction materials such as struts and horizontal connecting materials. It was not constructed to be supported by the body, and its purpose of use was extremely limited.

The present invention has been made in order to solve the above problems, and the installation of lower construction materials such as horizontal ties, struts, horizontal braces, vertical braces, etc. to steel pipe piles installed mainly as gantry piles and shelf piles. To provide a lower work material receiving structure for a steel pipe pile and a lower work material receiving metal fitting for a steel pipe pile that can be removed very easily without using fire such as welding or gas cutting. .

The present invention is an invention of a lower work material receiving structure for a steel pipe pile, comprising a lower work material receiving fitting for supporting an end of a lower work material on a side portion of a steel pipe pile, wherein the lower work material receiving fitting comprises: A clamp for gripping the steel pipe pile is provided, and the clamp rotatably connects a pair of circular arc bodies formed in a semicircular shape along the outer peripheral surface of the steel pipe pile and one end of the circular arc bodies. and a connecting bolt that detachably connects the opposite ends of the circular arc body, and in particular, a substructure such as a horizontal connecting material to a steel pipe pile as a gantry pile or a shelf pile. Installation and removal of struts and struts can be performed very easily without using fire such as welding or gas cutting.

By mounting a plurality of the clamps spaced apart in the axial direction of the steel pipe pile, the ends of the lower construction material can be firmly joined to the steel pipe pile.

Also, a bracket can be attached to the side of the clamp, and the end of the lower construction material such as a horizontal joint can be easily joined to the bracket by bolting. In addition, by bolting the ends of the lower members to the brackets via connecting pieces, the ends of the lower members can be joined in the vertical and oblique directions.

In addition, by attaching clamping metal fittings for sandwiching and joining the end of the lower work to the side of the clamp, the end of the lower work can be easily joined to the side of the steel pipe pile. In addition, by rotatably attaching the clamping hardware to the side of the clamp, the ends of the lower workpieces can be joined in any horizontal or vertical direction.

Since the lower construction material receiving bracket is detachably attached to the steel pipe pile as the gantry pile or the shelf pile by a clamp having a connection bolt, the horizontal tie member to the steel pipe pile as the gantry pile or the shelf pile. It is very easy to install and remove substructures and struts of shoring without using fire such as welding or gas cutting.

In addition, when installing substructure materials and struts, the tightening torque of the connecting bolts that fix the clamps to the gantry piles is used for management, so there are no problems such as poor welding, and skilled workers are not required can also ensure a certain level of quality.

Furthermore, since no fire is used when installing and removing substructures and struts, installation and removal work can be done even if combustible materials are present in the surrounding area, and scrapping of steel pipe piles and substructures is avoided. It is extremely economical because steel pipe piles, substructures and struts can be used repeatedly.

It is a partial perspective view of an earth retaining shoring and a temporary gantry. A lower framework of a temporary gantry consisting of a steel pipe pile as a gantry pile, a horizontal tie member, and a vertical brace. FIG. 4 is a cross-sectional view of a joint with a tie member; Fig. (a) is a plan view of a bracket having a bracket on one side of the clamp, and Fig. (b) is a modification of the bracket having brackets on both sides of the clamp. A plan view, and FIG. (c) is a plan view of a bracket having brackets on four sides of the clamp. A lower framework of a temporary gantry consisting of steel pipe piles as gantry piles and horizontal tethers. A front view, and FIG. (c) is a cross-sectional view. It is a partial front view of a lower framework of a temporary gantry consisting of steel pipe piles as gantry piles and vertical braces. FIG. 1(a) is a partial plan view and FIG. FIG. 1(a) is a front view, FIG. 1(b) is a side view, and FIG. Fig. (a) is a partial cross-sectional view, and Fig. (b) is a side view of a joint between a steel pipe pile as a gantry pile and a vertical brace. Fig. (a) is a front view, Fig. (b) is a cross-sectional view, and Fig. (c) is a plan view of a support metal fitting, showing a state in which a strut is supported by a support metal fitting on a steel pipe pile as a shelf pile. It is a diagram. Fig. 1(a) is a front view and Fig. 1(b) is a cross-sectional view showing a state in which a strut is supported and fixed to a steel pipe pile as a shelf pile by a receiving metal fitting and a fixing metal fitting. Fig. (a) is a vertical cross-sectional view, and Fig. (b) is a plan view showing a connecting portion of a lower work piece such as a horizontal joint member and a receiving metal fitting.

FIGS. 1 to 3 show an embodiment of the present invention, in which steel pipe piles are arranged at predetermined intervals as gantry piles of a temporary gantry, and horizontal tethers and vertical braces, etc., are installed as lower construction materials between the steel pipe piles. 1 illustrates a temporary gantry consisting of

In the figure, a horizontal connecting member 2 and a vertical brace 3 are installed between steel pipe piles 1, 1 facing each other. It is joined by material receiving metal fittings (hereinafter referred to as “receiving metal fittings”) 4 , 4 .

The receiving metal fittings 4 are attached to a pair of upper and lower clamps 5, 5 that hold the side portion of the steel pipe pile 1 and to the side portions of the upper and lower clamps 5, 5, respectively, and a pair of upper and lower clamps connected to the end portion of the horizontal connecting material 2. It is composed of brackets 6,6.

A pair of upper and lower clamps 5, 5 are formed by connecting a pair of circular arc bodies 7, 7 formed in a semicircular shape in a plan view along the outer peripheral surface of the steel pipe pile 1 and one end side ends of the circular arc bodies 7, 7. It is composed of a connecting pin 8 that is horizontally rotatably connected and a connecting bolt 9 that detachably connects opposite ends (free end side ends) of the arc bodies 7 and 7 .

Connecting ribs 10, 10 facing each other in the circumferential direction of the steel pipe pile 1 are formed at opposite ends of the arc bodies 7, 7, and a connecting bolt 9 is detachably tightened between the connecting ribs 10, 10.

The pair of upper and lower clamps 5, 5 are attached separately in the pipe axis direction (vertical direction) of the steel pipe pile 1, and the connecting ribs 10, 10 are overlapped with each other, and the connecting bolt 9 is strongly tightened. It is detachably attached to the steel pipe pile 1 .

The pair of upper and lower brackets 6, 6 are L-shaped when viewed from the side, face the sides of the upper and lower circular arc bodies 7, 7 in the vertical direction, and protrude parallel to the diametrical direction of the upper and lower clamps 5, 5. attached to the

A pair of upper and lower brackets 6, 6 are attached to the upper and lower circular arc bodies 7, 7 at intervals of approximately 90 degrees in the circumferential direction. It is attached to the side (see Figures 1(b) and (c)).

The pair of upper and lower brackets 6, 6 are detachably attached to the sides of the circular arc bodies 7 by means of mounting bolts 11, respectively. are formed at equal intervals in the circumferential direction of the circular arc body 7, even after the upper and lower clamps 5 and 5 are attached to the steel pipe pile 1, the brackets 6 and 6 can be attached in accordance with the installation direction of the horizontal tie member 2. You can freely change the position.

The ends of the horizontal connecting member 2 are fitted between the upper and lower brackets 6, 6 thus formed, and connecting bolts 12, 12 are tightened between the upper and lower brackets 6, 6 and the ends of the horizontal connecting member 2, respectively. , the end of the horizontal connecting member 2 is detachably joined between the upper and lower brackets 6,6.

The vertical braces 3, 3 are installed in an X shape between the steel pipe piles 1, 1 facing each other, and the ends of the vertical braces 3, 3 are connected to the steel pipe piles 1, 1 facing each other via the receiving metal fittings 4 and the connecting pieces 13. (FIGS. 2(a)-(c)). For example, one side of the upper and lower circular arc bodies 7, 7 (see FIG. 2(a)), symmetrical both sides (see FIG. 2(b)), or four horizontal sides of the vertical braces 3, respectively. The end portion is joined to the receiving metal fitting 4 via the connecting piece 13 .

The connecting piece 13 is fitted between the upper and lower brackets 6 , 6 and detachably attached by tightening connecting bolts 12 , 12 between the upper and lower brackets 6 , 6 and the connecting piece 13 .

Both ends of each vertical brace 3 are detachably joined to the connecting pieces 13 by tightening the connecting bolts 14 between the connecting pieces 13 and the ends of the vertical braces 3 .

Here, since the ends of the vertical brace 3 are connected to the upper and lower brackets 6, 6 via the connection piece 13 by the connection bolts 12 and 14, the vertical brace 3 can move in the water direction and the vertical direction with the connecting portion as the axis. It can rotate in both directions, so that even if the steel pipe piles 1, 1 facing each other are tilted, this problem can be easily absorbed.

Moreover, the same bracket can be used as the bracket 4 that joins the end of the horizontal tie member 2 to the steel pipe pile 1 and the bracket 4 that joins the end of the vertical brace 3 to the steel pipe pile 1 .

FIGS. 4(a) to 4(c) show another embodiment of the present invention, in which steel pipe piles as gantry piles are arranged at predetermined intervals, and lower construction materials are erected as horizontal ties between the steel pipe piles. It is a diagram illustrating a partial frame of a temporary gantry consisting of.

In the figure, a horizontal connecting material 2 is installed between the steel pipe piles 1, 1 facing each other, and both ends of the horizontal connecting material 2 are attached to the sides of the steel pipe piles 1, 1 with lower construction material receiving metal fittings (hereinafter "receiving metal fittings"). joined by 15,15.

The receiving fitting 15 is composed of a clamp 5 that grips the side of the steel pipe pile 1 and a clamping fitting 16 that clamps the end of the horizontal connecting member 2. The clamp 5 is described in the embodiment of FIGS. 1 and 2. organized along the street.

The clamping metal fitting 16 includes a metal fitting body 16a attached to the side portion of the clamp 5 so as to be rotatable in a vertical plane, and a plurality of vertical tightening bolts 16b and horizontal tightening bolts 16c screwed into the side portions of the metal fitting body 16a. ing.

The metal fitting main body 16a is formed in a short tubular shape having a substantially rectangular cross section penetrating in one direction. The vertical tightening bolts 16b are screwed into the upper and lower ends (FIG. 4(a)) or one of them (FIG. 4(b)) of the metal fitting body 16a, and the horizontal tightening bolts 16c are screwed to the outer side facing the steel pipe pile 1. They are screwed to the located side portions, both penetrate the metal fitting main body 16a, and by being tightened, the side portions of the horizontal connecting member 2 are strongly sandwiched and fixed to the metal fitting main body 16a.

In such a configuration, both ends of the horizontal connecting member 2 are passed through the metal fitting main body 16a, and the vertical tightening bolts 16b and the horizontal tightening bolts 16c screwed into the respective side portions of the metal fitting main body 16a are strongly tightened to achieve horizontal jointing. Both ends of the material 2 can be fixed to the fitting body 16a.

In addition, since the metal fitting body 16a is attached to the side portion of the clamp 5 so as to be rotatable in the vertical plane, even if the steel pipe piles 1, 1 facing each other are tilted, the horizontal movement between the steel pipe piles 1, 1 can be secured. The joint material 2 is installed horizontally, and both ends can be securely joined to the side parts of the steel pipe piles 1, 1.例文帳に追加In addition, a horizontal tie that is slightly longer than the interval between the steel pipe piles 1, 1 can be used without any problem.

The cross-sectional shape of the metal fitting main body 16a is not particularly limited, and if the metal fitting main body 16a has a circular cross-sectional shape, a circular steel pipe (steel pipe) can be used as the horizontal connecting member 2.

FIGS. 5 to 8 are also another embodiment of the present invention, and are part of a temporary gantry consisting of steel pipe piles arranged as gantry piles and substructures erected as vertical braces between the steel pipe piles. Fig. 4 illustrates a frame;

In the figure, a pair of vertical braces 3, 3 are installed in an X-shape between steel pipe piles 1, 1 facing each other at a predetermined interval, and both ends of each vertical brace 3, 3 are attached to the sides of the steel pipe piles 1, 1 to form substructures. They are joined by material receiving metal fittings (hereinafter referred to as “receiving metal fittings”) 17 , 17 .

The receiving metal fitting 17 is composed of a clamp 5 that grips the side portion of the steel pipe pile 1 and a clamping metal fitting 18 that is attached to the side portion of the clamp 5 and clamps the end portion of the vertical brace 3 . The clamp 5 is constructed as described in the embodiment of FIGS. 1 and 2. As shown in FIG.

The holding metal fitting 18 includes a fixed plate 18a integrally attached to the side of the clamp 5 and a rotating plate 18b attached to the side of the fixed plate 18a so as to be rotatable in a vertical plane along the fixed plate 18a. there is

The fixed plate 18a and the rotary plate 18b are formed in the shape of a rectangular plate with approximately the same size. A pair of arc-shaped guide grooves 18c, 18c are formed on the rotary plate 18b around the rotary shaft, and a pair of guide pins 18d, 18d are attached to the fixed plate 18a to loosely fit in the guide grooves 18c, 18c. ing.

As a result, the rotary plate 18b can freely rotate within the vertical plane within the length of the guide grooves 18c, 18c together with the lower material clamping portions 18e and 18f, which will be described later.

After the orientation of the vertical place 3 is determined, the guide pin 18d may be completely tightened so as not to rotate the lower material holding portions 18e and 18f, or may be left alone. By completely tightening the guide pin 18d, the end of the vertical brace 3 can be rigidly connected, and by loosening it, it can be pinned.

Further, lower work clamping portions 18e and 18f that rotate together with the rotating plate 18b are attached to the side portion of the rotating plate 18b, and the ends of the vertical brace 3 are clamped and fixed to the side portions of the lower work clamping portions 18e and 18f. A plurality of tightening bolts 18g are screwed together.

The lower work clamping portions 18e and 18f are formed in a short tubular shape having a substantially rectangular cross section penetrating in one direction. In addition, the lower work clamping portions 18e and 18f are attached to the side portion of the rotating plate 18b so as to be double stacked in the diametrical direction of the steel pipe pile, and each rotates independently and freely in the vertical plane. ing.

The vertical tightening bolts 18g are screwed into the upper and lower end portions of the lower work clamping portions 18e and 18f or one of them, respectively, pass through the side portions of the lower work clamping portions 18e and 18f, and are tightened to tighten the vertical braces 3. The ends of the vertical brace 3 are screwed so as to be fixed to the lower work fixing portions 18e and 18f, respectively, by tightly pinching the sides.

In such a configuration, both ends of the vertical brace 3 are passed through the lower work clamping portions 18e and 18f, respectively, and the vertical tightening bolts 18g are strongly tightened so that both ends of the vertical brace 3 are secured to the lower work fixing portions 18e and 18f. It is designed to be fixed at 18f.

In addition, even if a construction error occurs in the installation interval (span) between the steel pipe piles 1, 1, the construction error can be absorbed by sliding the ends of the vertical braces 3 within the lower work fixing part 18e or 18f. This eliminates the need to cut the ends of the vertical braces 3 or the like.

In addition, since the lower work clamping portions 18e and 18f are attached to the side portion of the clamp 5 so as to be rotatable in the vertical plane, the ends of the plurality (two) of the vertical braces 3 extending in two directions are attached to the steel pipes. The sides of the pile 1 are adapted to be joined together. Also, the vertical brace 3 is doubled to reinforce the space between the steel pipe piles 1,1.

The cross-sectional shape of the lower work material holding portions 18e and 18f is not particularly limited, and if the cross-sectional shape of the lower work material holding portions 18e and 18f is circular, a circular steel pipe (steel pipe) is used as the vertical brace 3. can also

FIGS. 9(a) to 9(c) show another embodiment of the present invention, which is suitable for installing a horizontal tie member with a relatively small cross section between opposing steel pipe piles. Briefly, the clamp 5 of the bracket 4 is one (single step), and a pair of brackets 6, 6 are attached to the outer side of the arc bodies 7, 7 of the clamp 5, and the brackets 6, 6 are horizontally connected. The ends of the material 2 are detachably connected by connecting bolts 12 .

FIGS. 10(a) and 10(b) show another embodiment of the present invention, in which a strut 19 erected as a lower construction material on the side of a steel pipe pile 1 arranged as a shelf pile of an earth retaining shoring. The end of the strut 19 is supported by a lower work fitting (hereinafter referred to as "receiving fitting") 20, and the strut 19 is fixed on the receiving fitting 20 by a lower work fixing fitting (hereinafter referred to as "fixing fitting") 21. there is

As the steel pipe pile in this case, the steel pipe pile arranged as the gantry pile of the temporary gantry can be used.

The receiving metal fittings 20 are arranged apart from each other in the pipe axis direction of the steel pipe pile 1, and are attached to a plurality of clamps 5, 5 for gripping the steel pipe pile 1, and one side portion of the clamps 5, 5, and the upper and lower clamps 5, 5, and a bracket 23 attached to the connecting body 22 and on which the strut 19 is placed.

The connecting body 22 is made of a steel pipe, shaped steel, plate, or the like, and can be expanded and contracted in the axial direction of the steel pipe pile 1, so that the distance between the upper and lower clamps 5, 5 can be freely changed.

In addition, in order to make the connecting body 22 expandable and contractable in the pipe axis direction of the steel pipe pile 1, for example, a plurality of long members made of shaped steel etc. are tied together so as to be slidable in opposite directions of the pipe axis direction It is conceivable to use a fastening bolt or the like to fix both of them with a predetermined stretchable length.

The bracket 23 includes an attachment portion 23a detachably bolted to the side portion of the connecting body 22, and a strut mounting portion 23b extending horizontally in the diameter direction of the steel pipe pile 1 from the upper end portion of the attachment portion 23a. and one or a plurality of diagonal members 23c obliquely arranged between the strut mounting portion 23b and the mounting portion 23a to form a triangular shape in a side view.

The attachment portion 23a, the strut mounting portion 23b, and the diagonal member 23c are all made of a steel pipe, shaped steel, plate, or the like, and are configured in the same manner as the connecting body 22 so that their lengths can be changed. As a result, struts 19 having different diameters can be easily handled.

According to this embodiment, a plurality of upper and lower clamps 5, 5 are arranged in the pipe axis direction of the steel pipe pile 1, and the bracket 23 is formed in the frame shape of a right-angled triangle when viewed from the side, so that the strength of the metal fitting itself is large. Cross-sectional struts 19 can also be supported without problems.

In addition, the fixing metal fitting 21 is basically configured to have a shape and structure that are vertically symmetrical with the receiving metal fitting 20, and is configured to be used as the receiving metal fitting 20 by being turned upside down.

Specifically, a plurality of (two) upper and lower clamps 5, 5 that are spaced apart in the pipe axis direction of the steel pipe pile 1 and hold the steel pipe pile 1, and attached to one side of the clamps 5, 5 A connecting body 22 that connects between the upper and lower clamps 5, 5, and a bracket 24 that is attached to the connecting body 22 and fixes the strut 19 placed on the bracket 23 by pressing it on the bracket 23. consists of

In particular, the bracket 24 includes a mounting portion 24a detachably bolted to the side portion of the connecting body 22, and a fixing portion 24b extending horizontally in the diameter direction of the steel pipe pile 1 from the lower end of the mounting portion 24a. , and a plurality of diagonal members 24c arranged obliquely between the fixed portion 24b and the mounting portion 24a to form a triangular shape in a side view.

The mounting portion 24a, the strut fixing portion 24b, and the inclined portion 24c are all made of a steel pipe, shaped steel, plate, or the like, and are configured similarly to the connecting body 22 so that their lengths can be changed. As a result, struts 19 having different diameters can be easily handled. According to this embodiment, not only can the strut 19 be simply supported on the side portion of the shelf pile 1, but the strut 19 can be firmly fixed.

FIGS. 11(a) and 11(b) show another embodiment of the present invention, in which dimensional construction errors such as the arrangement interval (span) of steel pipe piles are corrected between lower construction materials such as receiving metal fittings and horizontal connecting materials. It is made so that it can be easily absorbed at the junction of the

More specifically, the joint hole 6a at the end of the horizontal connecting member provided in the bracket 6 of the receiving metal member 4 is formed as an elongated hole having a long axis in the axial direction of the horizontal connecting member 2. As shown in FIG. Adjusting pieces 25a and 25b are inserted on both sides of the connecting bolt 12 of the horizontal connecting member 2 penetrating the joint hole 6a.

As the adjusting pieces 25a and 25b, a plurality of pieces having different lengths are prepared in advance, and the optimum one is inserted according to the length of the gap on both sides of the connecting bolt 12. As shown in FIG.

INDUSTRIAL APPLICABILITY The present invention enables easy installation and removal of substructures such as horizontal joints and struts in temporary structures such as temporary gantry and earth retaining without using fire such as welding and gas cutting.

1 Steel pipe pile 2 Horizontal connecting material 3 Vertical brace 4 Receiving metal fitting (lower construction material receiving metal fitting)
5 clamp 6 bracket 7 arc body 8 connecting pin 9 connecting bolt
10 connecting rib
11 Mounting bolt
12 Connection bolt
13 connecting piece
14 Connection bolt
15 Receiving metal fittings (receiving metal fittings for lower work)
16 clamping bracket
17 Receiving metal fittings (receiving metal fittings for lower work)
18 Clamping bracket
19 Struts
20 Receiving metal fittings (receiving metal fittings for lower work)
21 Fixing bracket (lower work fixing bracket)
22 concatenation
23 Bracket
24 Bracket
25a adjustment piece
25b adjustment piece

Claims (7)

A lower work material receiving structure for a steel pipe pile comprising a lower work material receiving fitting for joining an end of a lower work material to a side portion of a steel pipe pile, wherein the lower work material receiving fitting grips the steel pipe pile. The clamp includes a pair of arc bodies formed in a semicircular shape along the outer peripheral surface of the steel pipe pile, a connecting pin that rotatably connects the ends of the arc bodies at one end, and the arc. A lower construction material receiving structure for a steel pipe pile, characterized by comprising a connection bolt for detachably connecting opposite ends of a body. 2. The lower work material receiving structure for a steel pipe pile according to claim 1, wherein a plurality of said clamps are provided spaced apart in a pipe axial direction of said steel pipe pile. 3. The support structure for a steel pipe pile according to claim 1 or 2, further comprising a bracket attached to a side portion of the clamp and to which an end of the lower work is connected. Lower work receiving structure. 4. The lower work material receiving structure for a steel pipe pile according to claim 3, wherein the end portion of the lower work material is joined to the bracket via a connecting piece. 3. The structure for receiving a lower work material for a steel pipe pile according to claim 1 or 2, further comprising a clamping metal fitting attached to a side portion of the clamp and connected to an end of the lower work material, wherein the clamping metal fitting is attached to the lower work material. A lower work material receiving structure for a steel pipe pile, comprising a metal fitting body through which the end of the metal fitting body penetrates, and a tightening bolt that is screwed into the side part of the metal fitting body and clamps the end of the lower work material. 6. The lower work material receiving structure for a steel pipe pile according to claim 5, wherein said clamping fitting is rotatably attached to a side portion of said clamp. A lower work receiving fitting for joining an end of a lower work to a side of a steel pipe pile, comprising a clamp for gripping the steel pipe pile, the clamp having a semicircular shape along the outer peripheral surface of the steel pipe pile. a pair of arcuate bodies formed in two, a connecting pin for rotatably connecting the ends of the arcuate bodies at one end, and a connecting bolt for detachably connecting the opposite end parts of the arcuate bodies. A lower construction material receiving bracket for steel pipe piles characterized by:

Images