JP4129223B2 - Steel pipe sheet pile and steel pipe sheet pile connection structure - Google Patents

Description

  The present invention relates to a steel pipe sheet pile adopted for construction of a bridge foundation and the like and a connecting structure of steel pipe sheet piles.

  Today, steel pipe sheet pile foundations are indispensable as one of the bridge foundations. When a foundation structure such as a pier is constructed in water, a (temporary) cut-off work is performed with a steel pipe sheet pile for cutting the periphery of the target structure.

  The steel pipe sheet pile 1 used for the cut-off work is one in which a joint 3 is formed on the left and right peripheral sides of the steel pipe 2 as shown in FIGS. 9 to 11, and these joints 3 are connected to each other in order. There are various combinations of the joint 3 such as a box shape and a T shape, a mutual C shape, a C shape and a T shape, and the illustration here is an example.

  Moreover, although the said steel pipe sheet pile 1 may be driven with the driving | running (pile driving) machine by a diesel pile hammer, this has a big noise vibration accompanying driving | running and becomes a construction pollution. Therefore, a method of press-fitting with a hydraulic jack or a vibro hammer while reducing the insertion resistance by earth auger excavation is also employed, but in each case, the steel pipes 2 are set one by one.

  In this way, it is very troublesome to insert the steel pipe 2 into the excavation hole one by one or construct it by placing it, and there is much insertion resistance at the joint 3 part during construction. It is easy to bend and it is difficult to ensure the vertical accuracy of the steel pipe sheet pile 1 itself.

  Further, when the steel pipe sheet pile 1 is set in the excavation hole in advance of the earth auger excavation as described above, if a multi-axis auger machine is used for the earth auger, a plurality of excavation holes are simultaneously formed. Although it is possible to arrange the steel pipe sheet pile 1 one by one as described above, the number of man-hours is not reduced.

  In addition, it is said that construction by the construction method is technically difficult when the water depth exceeds 10 m in the case of soft ground and exceeds 15 m in the case of solid ground. In particular, in the case of the single steel pipe sheet pile cut-off method, there is an administrative notice that the method should not be adopted in deep water, and there is a defect that the water stoppage cannot be satisfied.

  On the other hand, when a horizontal external force acts on the steel pipe sheet pile foundation, a vertical shearing force acts on the joint 3 portion. When this shear force becomes larger than the shear strength of the joint, the displacement deformation of the joint portion increases rapidly, and the degree of decrease in the bending rigidity of the entire steel pipe sheet pile foundation also increases.

  To eliminate this inconvenience, the overall strength of the steel pipe sheet pile can be increased, multiple steel pipes can be driven simultaneously, construction time can be greatly reduced, and multiple pipes are pre-bonded with a defined accuracy. By doing so, there is a steel pipe sheet pile that has high construction accuracy and improved vertical accuracy (see, for example, Patent Document 1).

As shown in FIG. 12, the steel pipes 2, 2 arranged in parallel are integrated with the H-section steel 4, which is a connecting member having an H-shaped cross section in which a flange end edge is joined to the peripheral surface of each steel pipe 2. The steel pipe sheet pile 1 is connected to the steel pipe 2 on the side opposite to the interconnecting side of the steel pipe 2, and the joint is also H-shaped in cross section, and the flange edge is connected to the peripheral surface of the steel pipe 2. The male joint 7 is slightly smaller than the female joint 8, and the two-type steel pipe sheet pile 1 provided with such a joint is connected by fitting between the joints. The filler 9 is filled.
JP 2003-138558 A

  The steel pipe sheet pile described in JP-A-2003-138558 is designed to prevent water contamination by preventing the injection material from flowing out from the joint gap when the injection work for water stop is performed in the joint. The gap between the joints can be sealed, and filling of mortar or the like that requires rigidity according to the purpose is possible. By the filling, a further water-stopping effect can be obtained and a high-strength joint can be obtained. .

  In such a steel pipe sheet pile, sufficient rigidity is already secured, and it is considered that there is no need to obtain further rigidity, but the water stop between joints is due to the fitting of the H-shaped steel. Due to the structure, there is room for further improvement of the water stop effect.

  The object of the present invention is to solve the inconvenience of the conventional example, as well as a steel pipe sheet pile provided with joints on both sides of a single steel pipe as shown in FIGS. It is an object of the present invention to provide a steel pipe sheet pile and a steel pipe sheet pile connection structure that can further improve the water stoppage between joint play and do not decrease the rigidity.

In order to achieve the above object, the invention according to claim 1 is a steel pipe sheet pile in which a plurality of joints for connecting steel pipes are provided at both ends of the steel pipes arranged in the steel pipe sheet pile wall construction direction. The flange end edge is connected to the peripheral surface of the steel pipe as a male male or female joint, and the male joint is slightly swung so that it can be fitted into the space surrounded by the flange inner surface and web surface of the female joint. In addition, a T-shaped connecting member is protruded outward from the male joint web so that the top of the connecting member is parallel to the web, and the T-shaped connecting member is connected to the female joint web. The gist is that a notch into which the member is inserted is formed.

In the invention according to claim 2, steel pipes arranged in a plurality in the steel pipe sheet pile wall construction direction are integrally connected by a connecting member of H steel whose flange end edge is coupled to the peripheral surface of each steel pipe, and the connecting member In the steel pipe sheet pile provided with a joint on the opposite side of the steel pipe connection side, the joint is also an H steel male joint or female joint, and the flange end edge is coupled to the peripheral surface of the steel pipe. As a small swing so that it can be fitted into the space surrounded by the side surface and the web surface, a coupling member having a T-shaped cross section is formed from the web of the male joint so that the top of the coupling member is parallel to the web. The gist of the invention is that a notch into which the T-shaped coupling member is inserted is formed on the web of the female joint.

  The invention according to claim 3 is a steel pipe sheet pile provided with joints for connecting steel pipes at both ends of the steel pipes arranged in the steel pipe sheet pile wall construction direction, wherein the joint is a flange end as a male or female joint of H steel. The edge is connected to the peripheral surface of the steel pipe, and the male joint is slightly swung so that it can fit into the space surrounded by the flange inner surface and the web surface of the female joint. A projecting piece parallel to the web is projected oppositely, a gap is formed between the tips of both projecting pieces, and an outward angle-shaped projecting piece that fits the projecting piece is projected from the web of the female joint. This is the gist.

In the invention according to claim 4, steel pipes arranged in a plurality in the steel pipe sheet pile wall construction direction are integrally connected by a connecting member of H steel whose flange end edge is coupled to the peripheral surface of each steel pipe, and the connecting member In the steel pipe sheet pile provided with a joint on the opposite side of the steel pipe connection side, the joint is also an H steel male joint or female joint, and the flange end edge is coupled to the peripheral surface of the steel pipe. As a small swing so that it can be fitted into the space surrounded by the side surface and the web surface, a protruding piece parallel to the web is projected from the flange end of the male joint, and between the ends of both protruding pieces. The gist is that a gap is formed and an outward angle-shaped projecting piece that fits into the projecting piece is projected from the web of the female joint.

The invention according to claim 5 is a steel pipe sheet pile provided with joints for connecting steel pipes to both ends of the steel pipes arranged in the steel pipe sheet pile wall construction direction, wherein the joint is a flange end as a male or female joint of H steel. The edge is connected to the peripheral surface of the steel pipe, and the male joint is cross-sectioned from the web of the male joint so that it can be fitted to the space surrounded by the flange inner surface of the female joint and the web surface. A T-shaped coupling member projecting outward so that the top of the coupling member is parallel to the web, and forming a notch into which the T-shaped coupling member is inserted into the web of the female joint; The gist of the invention is that the top of the T-shaped coupling member is inserted inside the web of the female joint, and the steel pipes are connected to each other by fitting of a plurality of joints.

According to a sixth aspect of the invention, a steel pipe cross for a plurality of sequences in the steel pipe sheet pile wall construction direction, integrally connected to at tethers of H steel flange edges are attached on the outer periphery of the steel pipe, by the tether In the steel pipe sheet pile provided with a joint on the opposite side of the steel pipe connection side, the joint is also an H steel male joint or female joint, and the flange end edge is coupled to the peripheral surface of the steel pipe. As a small swing so that it can be fitted into the space surrounded by the side surface and the web surface, a coupling member having a T-shaped cross section is formed from the web of the male joint so that the top of the coupling member is parallel to the web. Projecting outward, forming a notch into which the T-shaped coupling member is inserted into the web of the female joint, and inserting a trough of the T-shaped coupling member into the inner side of the female joint web. It is necessary to connect sheet piles by fitting multiple joints. It is an.

  According to the first, second, fifth, and sixth aspects of the present invention, when the male joint and the female joint are fitted, the top of the T-shaped coupling member is located inside the web of the female joint. Inserted into. Therefore, even if water enters the joint from the overlapping portion of the flange on one side of the male joint and the female joint, the intruded water travels from the flange to the web, and further to the T-shaped coupling member. After flowing into the inside of the, it flows in the direction of the flange on the opposite side. Therefore, the distance through which water flows becomes longer than before, and the water stopping action is improved.

  The invention according to claim 7 is the first space surrounded by the inner surface of the web of the female joint, the flange and the peripheral surface of the steel pipe by the fitting of the male joint and the female joint, the outer surface web of the female joint and the male joint. The gist is that the second and third spaces surrounded by the inner surface of the flange and the outer surface of the web and defined by the T-shaped coupling member are formed as a water stop space.

  According to the seventh aspect of the present invention, the space formed between the joints by the fitting of the male joint and the female joint is the first, second and third by the flange, the web and the T-shaped coupling member. It is divided into spaces. Therefore, even if water enters the joint from the overlapping portion of the flange on one side of the male joint and the female joint, the intruded water travels from the flange to the web and enters the first space (for example, the second space). Enter from here, further through the T-shaped coupling member, enter the second space (for example, the first space), and further pass through the T-shaped coupling member, the third space (for example, the third space) And then reaches the flange on the opposite side, so that the water stop action is improved.

  The gist of the invention described in claim 8 is that the first, second and third spaces are filled with a filler such as concrete.

  According to the eighth aspect of the present invention, a further water-stopping effect can be obtained by filling a filler such as concrete, and the presence of the T-shaped coupling member can also enhance the adhesion between the joint steel and the water-stopping material. Thus, even if a notch is provided in the web of the female joint, it is possible to prevent the flange of the female joint from opening to the outside, thereby preventing deformation of the joint.

  The invention according to claim 9 is a steel pipe sheet pile provided with joints for connecting steel pipes to both ends of the steel pipes arranged in the steel pipe sheet pile wall construction direction, wherein the joint is a flange end as a male or female joint of H steel. The edge is connected to the peripheral surface of the steel pipe, and the male joint is slightly swung so that it can fit into the space surrounded by the flange inner surface and the web surface of the female joint. A projecting piece parallel to the web is projected oppositely, a gap is formed between the tips of both projecting pieces, and an outward angle-shaped projecting piece that fits the projecting piece is projected from the web of the female joint. The gist of the invention is to insert the tip of the angle-shaped projecting piece into the projecting piece through the gap between the projecting pieces and fit the tip of the angle-shaped projecting piece and the projecting piece.

The invention of claim 10 wherein the steel pipe cross for a plurality of sequences in the steel pipe sheet pile wall construction direction, integrally connected to at tethers of H steel flange edges are attached on the outer periphery of the steel pipe, by the tether In the steel pipe sheet pile provided with a joint on the opposite side of the steel pipe connection side, the joint is also an H steel male joint or female joint, and the flange end edge is coupled to the peripheral surface of the steel pipe. As a small swing so that it can be fitted into the space surrounded by the side surface and the web surface, a protruding piece parallel to the web is projected from the flange end of the male joint, and between the ends of both protruding pieces. Forming a gap and projecting an outward angle-shaped protruding piece that fits into the protruding piece from the web of the female joint, and the tip of the angled protruding piece is connected to the protruding piece via the gap between the protruding pieces. Insert inside and fit the tip of the angle-shaped protrusion and the protrusion It is an Abstract that.

  According to the present invention of claim 3, claim 4, claim 9, and claim 10, in a state where the male joint and the female joint are fitted, not only the flanges of both joints are superposed, but also inside thereof. The projecting piece, the tip of the angle-shaped projecting piece, and the web of the female joint are superposed in triplicate. Therefore, even if water enters the joint from the overlapped portion of the flange on one side of the male and female joints, the water on the other side must be bent several times through the overlapped portion by the protruding piece from the flange. Therefore, the water flowing distance becomes longer than before, and the water stopping action is improved.

  The gist of the invention described in claim 11 is that ribs are respectively provided on the outer side of the flange of the male joint and the inner side of the flange of the female joint at positions where the opposing surfaces do not face each other in front. is there.

  According to the present invention of claim 11, since the ribs are disposed between the overlapping flanges, the ribs abut each other at the side, and the flanges overlap when the upper surface of the rib abuts the opposing flange. The water can be further stopped.

  As described above, the steel sheet pile according to the present invention can increase the length of the inflowing water by interposing the coupling member between the joint play, and can improve the water stoppage. In addition to further improving the water-stopping property, it is possible to prevent a decrease in rigidity due to the interposition of the coupling member.

  Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of one unit showing a first embodiment of a steel pipe sheet pile of the present invention, FIG. 2 is a plan view of one unit showing an embodiment of a double-type steel pipe sheet pile, and FIG. 3 is a steel pipe sheet pile of the present invention. FIG. 1 is a plan view showing an embodiment of the connecting structure of FIG. 1. In the case of a single steel pipe 2, as shown in FIG. 1, a male joint 7 made of H steel is provided on one peripheral side and a male joint 8 made of H steel is provided on the other peripheral side. It was.

  Moreover, when the steel pipe sheet pile 1 is a double type of the steel pipe 2, as shown in FIG. 2, the steel pipe sheet pile 1 is used as a connecting member in which the flange edges are joined to the peripheral surfaces of the steel pipes 2 in parallel with each other. The shape steel 4 is integrally connected with an interval corresponding to the width of the H-shape steel 4, and a male joint 7 made of H steel and a female joint 8 made of H steel are provided on the opposite side of the interconnection. I made it.

  This H-section steel 4 may be obtained by rolling a shape steel, or may be independently assembled at a factory or the like by appropriate welding. When using rolled steel, the left and right edges of the flange 4a are welded to the circumferential surface of the steel pipe, and the parallel flange 4a and the steel pipes 2 and 2 form a sealed space 5 surrounding the four sides. In the figure, 4b is a web.

  The male joint 7 and the female joint 8 have a basic structure similar to the connecting member of the steel pipe 2, and the flange 7a, 8a and the webs 7b, 8b are combined with flanges 7a, 8a having an H-shaped cross section. , 8a are joined to the peripheral surface of the steel pipe 2. The male joint 7 is slightly smaller than the female joint 8.

  In addition to such a structure, in the present invention, a coupling member 10 having a T-shaped cross section is projected from the center of the web 7b of the male joint 7 outward by welding or the like. The connecting member 10 has a lower end of a T-shaped base portion 10a connected to the web 7b, and the top portion 10b protrudes in parallel with the web 7b. The width of the top portion 10b is shorter than the width of the web 7b.

  On the other hand, the web 8b of the female joint 8 is formed with a notch 11 into which the middle of the base portion 10a of the coupling member 10 is inserted.

  The fitting between the male joint 7 and the female joint 8 is performed by inserting the flange 7a of the male joint 7 between the flanges 8a of the female joint 8, and superimposing the flanges 7a and 8a, so that the tip of the flange 7a is connected to the web 8b of the female joint 8. The base portion 10a of the coupling member 10 is inserted into the notch 11 and the top portion 10b enters the inside of the web 8b of the female joint 8 while approaching.

  As a result, a sealed space surrounded by the flanges 7 a and 8 a and the web 7 b is formed, and this sealed space is divided into three spaces by the coupling member 10. The first space 12 a is a space in which the top portion 10 b is inserted and is surrounded by the flange 8 a of the female joint 8, the web 8 b and the peripheral surface of the steel pipe 2, and the second space 12 b is one of the flanges 7 a of the male joint 7. And the web 7b, the web 8b of the female joint 8, and the base portion 10a of the coupling member 10, and the third space 12c is the same as the second space 12b, the other of the flange 7a, the web 7b, the female This is a space surrounded by the web 8 b of the joint 8 and the base 10 a of the coupling member 10.

  The first to third spaces 12a, 12b, 12c are for water stoppage, and the spaces 12a, 12b, 12c are filled with a filler 9, such as concrete or mortar, using a tremy tube. You can also.

  Since the steel pipe sheet pile 1 connected by fitting the male joint 7 and the female joint 8 in this way further has a coupling member 10 in the sealed space formed here in the joint portion, Even if water enters the second space 12b in the sealed space from the overlapping portion of the flanges 7a and 8a, the intruded water passes through the base portion 10a of the coupling member 10 and passes through the notch 11 to reach the top portion 10b. 1 flows into the first space 12a, then travels again through the base 10a of the coupling member 10 and enters the third space 12c, and then reaches the overlapping portion of the flanges 7a and 8a on the other side.

  Therefore, since the flow distance of intrusion water from the outside to the inside of the steel pipe sheet pile 1 bypasses the first to third spaces 12a, 12b, and 12c by the interposition of the coupling member 10, the water stopping function becomes longer. Will improve.

  Further, by filling the first to third spaces 12a, 12b, and 12c with the filler 9, the water stop effect is further enhanced.

  And by providing the notch 11 in the web 8b of the female joint 8, the opposing flange 8a is likely to spread outward in a C shape, but the coupling member 10 is embedded in the filler 9, Adhesive force between the filler 9 and the joint steel is increased, and the opposing flange 8a can be prevented from spreading outward and can be prevented from being deformed.

  FIGS. 6 to 8 show a second embodiment. As a member for enhancing the rigidity of the coupling between the male joint 7 and the female joint 8 and for preventing water stop, the male joint 7 is directed from the front end of the flange 7a. At the same time, projecting pieces 13a and 13b parallel to the web 7b are projected, and a gap 14 is formed between the tips of the projecting pieces 13a and 13b.

  On the other hand, from the side of the female joint 8, outward angle-shaped projecting pieces 15a, 15b that fit into the projecting pieces 13a, 13b are projected from the web 8b, and the tips of the angle-shaped projecting pieces 15a, 15b are projected to the projecting parts. It inserts inside the protruding pieces 13a and 13b through the gap 14 between the pieces 13a and 13b, and the tip ends of the angle-shaped protruding pieces 15a and 15b and the protruding pieces 13a and 13b are fitted.

  Further, ribs 16a and 16b are respectively provided on the outer side of the flange 7a of the male joint 7 and the inner side of the flange 8a of the female joint 8 at positions where the opposed surfaces do not face each other.

  When the male joint 7 and the female joint 8 are fitted in this way, both flanges 7a and 8a are superposed, and an angular protrusion is formed in the gap 14 in the space surrounded by the superposed portion and the webs 7b and 8b. The pieces 15a and 15b are inserted, and the angle-shaped protruding pieces 15a and 15b and the protruding pieces 13a and 13b are fitted. In this state, the tip portions of the angle-shaped projecting pieces 15a and 15b, the projecting pieces 13a and 13b, and the web 8b are superposed in a triple manner.

  Further, since the ribs 16a and 16b abut against each other and the upper surface abuts against the opposing flanges 7a and 8a, the ribs 16a and 16b are interposed between the overlapping flanges 7a and 8a. Not only can the water stop further, but also the side surfaces of the ribs 16a and 16b can abut against the pulling force in the direction in which the steel pipes 2 are separated from each other. The rigidity can be further increased.

  Therefore, even if water enters the joint from the overlapping portion of the flanges 7a and 8a on one side of the male joint 7 and the female joint 8, the intruded water is projected from the flanges 7a and 8a to the projecting pieces 13a and 13b and the angle-shaped projecting pieces. Since it does not reach the flanges 7a and 8b on the other side unless it is bent a plurality of times through the overlapping portion by 15a and 15b, the distance that the water flows becomes longer than before and the water stopping action is improved.

  Moreover, the rigidity of the coupling between the male joint 7 and the female joint 8 is further improved by the fitting between the projecting pieces 13a and 13b and the angle-shaped projecting pieces 15a and 15b.

It is a top view which shows 1st Embodiment of 1 unit of the steel pipe sheet pile of this invention. It is a top view which shows 1st Embodiment of 1 unit of the 2 type steel pipe sheet pile of this invention. It is a top view of the principal part which shows 1st Embodiment of the connection structure of the steel pipe sheet pile of this invention. It is a top view which shows 1st Embodiment of the connection structure of the steel pipe sheet pile of this invention. It is a top view which shows 1st Embodiment of the connection structure of the double-type steel pipe sheet pile of this invention. It is a top view which shows 2nd Embodiment of 1 unit of the steel pipe sheet pile of this invention. It is a top view which shows 2nd Embodiment of 1 unit of the 2 type steel pipe sheet pile of this invention. It is a top view of the principal part which shows 2nd Embodiment of the connection structure of the steel pipe sheet pile of this invention. It is a top view which shows the 1st example of the conventional steel pipe sheet pile. It is a top view which shows the 2nd example of the conventional steel pipe sheet pile. It is a top view which shows the 3rd example of the conventional steel pipe sheet pile. It is a top view of the connection structure of the conventional steel pipe sheet pile.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steel pipe sheet pile 2 Steel pipe 3 Joint 4 H-shaped steel 4a Flange 4b Web 5 Sealed space 7 Male joint 8 Female joint 7a, 8a Flange 7b, 8b Web 9 Filler 10 Connecting member 10a Base 10b Top part 11 Notch 12a 1st space 12a 12b 2nd space 12c 3rd space 13a, 13b Projection piece 14 Crevice 15a, 15b Angle-shaped projection piece 16a, 16b Rib

Claims (11)

In steel pipe sheet piles with joints connecting steel pipes at both ends of the steel pipes arranged in the steel pipe sheet pile wall construction direction, the joints are H steel male joints and female joints, and flange edges are connected to the circumferential surface of the steel pipe to is intended, as the ones somewhat small size as the male joint can be fitted in a space surrounded by the flange inner surface and the web surface of the female coupling, the coupling member of T-shaped cross-section from the male coupling web, the A steel pipe sheet pile, characterized in that a notch into which the T-shaped coupling member is inserted is formed on the web of a female joint so as to project outward so that the top of the coupling member is parallel to the web. A plurality of steel pipes arranged in the steel pipe sheet pile wall construction direction are integrally connected by a connecting member of H steel whose flange edge is joined to the peripheral surface of each steel pipe, and a joint is formed on the opposite side of the steel pipe connecting side by the connecting member. The steel pipe sheet pile is provided with a flange end edge connected to the peripheral surface of the steel pipe as a male or female joint of H steel, and the male joint is surrounded by the flange inner surface and the web surface of the female joint. As a small swing so as to fit in the space, a coupling member having a T-shaped cross section is projected from the web of the male joint so that the top of the coupling member is parallel to the web. A steel pipe sheet pile, wherein a notch into which the T-shaped coupling member is inserted is formed in the web of the female joint. In steel sheet pile having a joint for connecting steel pipes mutually opposite ends of the steel pipe to a plurality of sequences in the steel pipe sheet pile wall construction direction, the joint on the circumference flange end edge of the steel pipe as YuTsugi hand or female joints of steel H The male joint is slightly swung so that it can be fitted into the space surrounded by the inner surface of the flange and the web surface of the female joint, and is parallel to the web facing away from the flange end of the male joint. A steel pipe sheet pile characterized by projecting projecting pieces, forming a gap between the tips of both projecting pieces, and projecting outward angle-shaped projecting pieces that fit into the projecting pieces from the web of a female joint . A plurality of steel pipes arranged in the steel pipe sheet pile wall construction direction are integrally connected by a connecting member of H steel whose flange edge is joined to the peripheral surface of each steel pipe, and a joint is formed on the opposite side of the steel pipe connecting side by the connecting member. The steel pipe sheet pile is provided with a flange end edge connected to the peripheral surface of the steel pipe as a male or female joint of H steel, and the male joint is surrounded by the flange inner surface and the web surface of the female joint. A projecting piece parallel to the web is projected from the flange end of the male joint so that it can be fitted into the space, and a gap is formed between the ends of both projecting pieces. A steel pipe sheet pile, characterized in that an outward angle-shaped projecting piece that fits into the projecting piece is projected from the web. In steel pipe sheet piles with joints connecting steel pipes at both ends of the steel pipes arranged in the steel pipe sheet pile wall construction method, the joints are H steel male joints and female joints, and flange edges are connected to the circumferential surface of the steel pipe to is intended, as the ones somewhat small size as the male joint can be fitted in a space surrounded by the flange inner surface and the web surface of the female coupling, the coupling member of T-shaped cross-section from the male coupling web, the The top of the coupling member is projected outwardly so as to be parallel to the web, a notch into which the T-shaped coupling member is inserted is formed on the web of the female joint, and the top of the T-shaped coupling member is formed. A steel pipe sheet pile connection structure, wherein the steel pipe is inserted into the female joint web and the steel pipes are connected to each other by fitting between the joints. A plurality of steel pipes arranged in the steel pipe sheet pile wall construction direction are integrally connected by a connecting member of H steel whose flange edge is joined to the peripheral surface of each steel pipe, and a joint is formed on the opposite side of the steel pipe connecting side by the connecting member. The steel pipe sheet pile is provided with a flange end edge connected to the peripheral surface of the steel pipe as a male or female joint of H steel, and the male joint is surrounded by the flange inner surface and the web surface of the female joint. As a small swing so as to fit in the space, a coupling member having a T-shaped cross section is projected from the web of the male joint so that the top of the coupling member is parallel to the web. A notch into which the T-shaped coupling member is inserted is formed in the web of the female joint, and the top portion of the T-shaped coupling member is inserted inside the web of the female joint, and the steel pipes are connected to each other by fitting with each other. Steel pipe sheet pile connection structure The first space surrounded by the inner surface of the web of the female joint, the flange, and the peripheral surface of the steel pipe by the fitting of the male joint and the female joint, the outer surface of the female joint, the inner surface of the flange of the male joint, and the outer surface of the web coupling structure is surrounded, according to claim 5 or claim 6 steel sheet pile according the second and the third space is being formed as a water stop space defined by the coupling member of T-shaped with the. The steel pipe sheet pile connection structure according to claim 7, wherein the first, second and third spaces are filled with a filler such as concrete. In steel sheet pile having a joint for connecting steel pipes mutually opposite ends of the steel pipe to a plurality of sequences in the steel pipe sheet pile wall construction direction, the joint on the circumference flange end edge of the steel pipe as YuTsugi hand or female joints of steel H The male joint is slightly swung so that it can be fitted into the space surrounded by the inner surface of the flange and the web surface of the female joint, and is parallel to the web facing away from the flange end of the male joint. Protruding pieces are provided, a gap is formed between the tips of both protruding pieces, and an outward angle-shaped protruding piece is inserted from the web of the female joint into the inside of the protruding piece through the gap between the protruding pieces. The angled protruding piece is inserted into the protruding piece through the gap, and the angled protruding piece is overlapped with the protruding piece to fit together. Connected structure. A plurality of steel pipes arranged in the steel pipe sheet pile wall construction direction are integrally connected by a connecting member of H steel whose flange edge is joined to the peripheral surface of each steel pipe, and a joint is formed on the opposite side of the steel pipe connecting side by the connecting member. The steel pipe sheet pile is provided with a flange end edge connected to the peripheral surface of the steel pipe as a male or female joint of H steel, and the male joint is surrounded by the flange inner surface and the web surface of the female joint. A projecting piece parallel to the web is projected from the flange end of the male joint so that it can be fitted into the space, and a gap is formed between the ends of both projecting pieces. An outward angle-shaped projecting piece that fits into the projecting piece is projected from the web, and the tip end of the angle-shaped projecting piece is inserted into the projecting piece through the gap, And the projecting piece are overlapped and fitted The connection structure of the tube sheet pile. 11. The connection of steel pipe sheet piles according to claim 10 , wherein ribs are respectively provided on the outer side of the flange of the male joint and the inner side of the flange of the female joint at positions where opposing surfaces do not face each other in front. Construction.

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