JP2020111894A - Joint structure of wall body constituent member, wall body constituent member using joint structure, wall body using wall body constituent member, and method of constructing wall body using wall body constituent member - Google Patents

Abstract

To provide a joint structure capable of ensuring a required slit width in a tubular member.SOLUTION: The present invention includes a tubular joint 36 that is fixed to a predetermined portion of a wall member 32 and serves as a female joint into which a male joint is inserted. A fitting slit 36a extending in the longitudinal direction is provided in the tubular joint, and a slit width adjusting member 38 for narrowing the slit width is installed near the fitting slit. The slit width adjusting member is made of a steel member and is fixed near the fitting slit by fusion welding or mechanical means.SELECTED DRAWING: Figure 2

Description

INDUSTRIAL APPLICABILITY The present invention relates to a joint structure of wall body constituent members constituting a wall body used as a water body structure (revetment, quay wall, breakwater, diversion wall, etc.) or land structure (retaining wall, earth retaining wall, etc.), and the joint. The present invention relates to a wall body forming member using a structure, a wall body using the wall body forming member, and a method for constructing a wall body using the wall body forming member.

FIG. 16: is a figure which showed an example of the wall body structure (double steel sheet pile wall) formed by the wall body installed in the boundary which separates the front side and the back side. The wall body 80 shown in FIG. 16 includes a pair of front walls 82 and a rear wall 84, a pair of partition walls 86 and 88, and a joint structure 90 that joins these walls at a corner portion.

Such a joint structure 90 is generally formed by installing a tubular joint with slits (for example, a steel pipe with slits) in a wall member (for example, a hat-shaped steel sheet pile). Then, by inserting and inserting the male joint (for example, the joint portion of the hat-shaped steel sheet pile) into the slit of the tubular joint with the slit serving as the female joint, the wall body constituent members are connected. .. The method of installing the above-mentioned slitted tubular joint in the wall body component is roughly classified into a method of attaching a tubular member provided with a slit in advance to the wall body component by welding, and a method of mounting the tubular member in the wall body component. Two methods are conceivable: a method of providing a slit in the tubular member after attaching by welding.

The former method has the following problems. That is, although residual stress due to its manufacture is accumulated in the tubular member, it is difficult to accurately predict the accumulated state in advance. On the other hand, if the tubular member is cut in the longitudinal direction by an appropriate means, the residual stress accumulated in the tubular member is released, but as described above, the accurate accumulation state of the residual stress cannot be predicted. It is difficult to predict the slit width caused by cutting accurately in advance. When a tubular member provided with a slit is attached to a wall member by welding, the welded part shrinks as it cools, so the slit width widens, but the amount of widening of the slit width is accurately predicted in advance. It's also difficult.

The latter method has the following problems. That is, not only the residual stress generated during the manufacturing but also the residual stress due to welding is accumulated in the tubular member, and when the tubular member is cut in this state by an appropriate means in the longitudinal direction, a slit width equal to or larger than the cutting margin is obtained. However, it is difficult to accurately predict the slit width because the slit width depends on the accumulated state of accumulated residual stress.

On the other hand, when inserting the male joint into the female joint, if the width of the slit of the tubular member is too large, the gap between the male joint and the slit becomes large, and earth and sand was applied to the backing material. In this case, there is also an inconvenience that earth and sand are sucked out from the gap. In such a case, it is conceivable to use rubble stones as the backfill material in order to prevent the backfill material from being sucked out, but the rubble stones are more expensive than earth and sand, and there is also the problem of poor procurement.

As described above, since it is difficult to accurately predict the slit width provided in the tubular member, it may be necessary to cut a plurality of times to secure a predetermined slit width, which increases the manufacturing cost. There was a problem that the production period was long. In addition, the slit shape may exhibit a non-straight state, which is a quality problem. On the other hand, if the slit width provided in the tubular member is larger than the planned/designed value, as described above, a gap is created between the insertion portion of the male member to be inserted in the slit and the slit, and the soil is removed from the gap. There was a problem of leakage. Further, if the slit width is smaller than the planned/designed value, the male member cannot be inserted into the slit, or if the male member is forced to be inserted into the slit, frictional heat causes a tubular member or a male member. There was a problem that was melted.

The present invention was developed in view of such a situation, and is a joint structure of a wall body constituent member capable of ensuring a required slit width in a tubular member, and a wall body structure using the joint structure. An object of the present invention is to provide a member, a wall body using the wall body constituent member, and a method for constructing a wall body using the wall body constituent member.

The joint structure of the wall body constituting member constituting a part of the wall body described in claim 1 of the present application is a female joint fixed to a predetermined portion of the wall body constituting member and having a male joint fitted therein. A tubular joint, wherein the tubular joint is provided with a fitting slit extending in the longitudinal direction, and a slit width adjusting member for narrowing the slit width is installed in the vicinity of the fitting slit. To do.

The joint structure of the wall body constituting member that constitutes a part of the wall body described in claim 2 of the present application is the joint structure of claim 1, wherein the slit width adjusting member is formed of a steel member, It is characterized in that it is fixed in the vicinity of the fitting slit by fusion welding means or mechanical means.

A joint structure of a wall body constituting member that constitutes a part of a wall body according to claim 3 of the present application is the joint structure according to claim 1 or 2, wherein the tubular joint is filled with a filler. It is characterized by being present.

The joint structure of a wall body constituting member forming a part of the wall body according to claim 4 of the present application is the joint structure according to claim 3, wherein the filler is solid such as styrofoam or urethane foam. It is characterized by being a filler.

According to the joint structure of the wall body constituting member that constitutes a part of the wall body described in claim 5 of the present application, in the joint structure of claim 4, a cut is provided at a predetermined portion of the filler. It is a feature.

The joint structure of the wall constituting member constituting a part of the wall according to claim 6 of the present application is the joint structure according to claim 3, wherein the filler is a bituminous material, urethane, rubber or soil cement. It is characterized by being a time-curable filler such as.

The wall component member according to claim 7 of the present application has the joint structure according to any one of claims 1 to 6.

The wall body described in claim 8 of the present application is characterized by being formed using the wall body constituent member described in claim 7.

The method for constructing a wall body according to claim 9 of the present application is characterized in that a wall body is formed using the wall body constituting member according to claim 7.

According to the joint structure of the present invention, the slit width adjusting member is installed after the fitting slit having a slightly larger width is provided in the longitudinal direction of the tubular joint, so that it can be relatively easily adapted to the planned/designed width. It is possible to obtain a fitting slit that fits, and easily prevent earth and sand leakage. Further, by filling the inside of the tubular joint in which the slit width adjusting member is installed with the filler, it is possible to more surely and easily prevent earth and sand leakage. In addition, by providing a cut in the filler filled inside the tubular joint, the male member can be easily inserted, and the earth and sand leakage can be prevented more reliably. Further, by constructing a wall body constituting member using the joint structure, a wall body using the wall body constituting member, and a wall body using the wall body constituting member, a mechanically favorable joint structure is obtained. In addition, the risk of sediment leakage can be avoided.

It is the top view which showed some wall bodies in which the wall body structural member provided with the joint structure for steel sheet piles of this invention was installed. 2A is an enlarged view of the portion 2a of FIG. 1, FIG. 2B is an enlarged view of the portion 2b of FIG. 2A, and FIG. It is a figure for explaining a narrowed state. It is a series of figures which showed various forms of the cylindrical joint of the joint structure of FIG. It is a series of figures which showed another various form of the cylindrical joint of the joint structure of FIG. It is the figure which showed another form of the cylindrical joint of the joint structure of FIG. It is the figure which showed another form of the cylindrical joint of the joint structure of FIG. It is the figure which showed another form of the cylindrical joint of the joint structure of FIG. It is the figure which showed another form of the cylindrical joint of the joint structure of FIG. It is the top view which showed a part of wall body in which the wall body structural member provided with the joint structure for steel pipe sheet piles of this invention was installed. 10A is an enlarged view of the portion 10a of FIG. 9, FIG. 10B is a view for explaining a state in which the slit width is narrowed by the slit width adjusting member, and FIG. It is an enlarged view of another form of the portion 10a. FIG. 11A is a view similar to FIG. 10A when a T-shaped joint is used as the male joint, and FIG. 11B illustrates a state in which the slit width is narrowed by the slit width adjusting member. 11C is a view similar to FIG. 11A in the case where the slit width adjusting member is installed only on one side of the slit. FIG. 12A is a view similar to FIG. 10A in the case where a T-shaped joint is used as the male joint and a pair of angle steels is used as the female joint, and FIG. 12B is a slit width adjustment. FIG. 12C is a view for explaining a state in which the slit width is narrowed by the member, and is a view similar to FIG. 12A when the slit width adjusting member is installed only on one side of the slit. FIG. 13(a) is a view showing a state in which a U-shaped steel sheet pile is branched from a wall body formed by a steel pipe sheet pile, and FIG. 13(b) is an enlarged view of a portion 13b of FIG. 13(a). is there. FIG. 14(a) is a schematic view showing a wall component member installed at the boundary between the sea and land, and FIGS. 14(b) and 14(c) are lines 14b and 14c in FIG. 14(a). It is the figure seen along with -14b and 14c. Fig. 15(a) is a diagram showing a form in which the filler is filled in the tubular joint, and Figs. 15(b) and 15(c) show cuts in the filler of Fig. 15(a). It is the figure which showed the form. It is the figure which showed an example of the wall body structure formed of the conventional wall body.

(Joint structure for steel sheet pile)
First, the joint structure in the case where a steel sheet pile is used as the wall component member will be described. 1 is a plan view showing a part of a wall formed by a steel sheet pile, FIG. 2(a) is an enlarged view of a portion 2a of FIG. 1, and FIG. 2(b) is a view of FIG. 2(a). It is an enlarged view of the part 2b.

The wall body 10 shown in FIG. 1 has a box body 20 formed by assembling a pair of front walls 12, a rear wall 14 and a pair of partition walls 16, 18 into a rectangular shape when seen in a plan view. The pair of front walls 12, the rear wall 14, and the pair of partition walls 16 and 18 are configured by connecting wall body constituent members made of desired steel sheet piles (for example, hat-shaped steel sheet piles) through fitting joints. .. An internal space 22 inside the box 20 is filled with a filling material (not shown).

The joint structure 30 is installed at the joint between the front wall 12 and the rear wall 14 and the ends of the partition walls 16 and 18.

A joint structure according to a preferred embodiment of the present invention, which is indicated by reference numeral 30 as a whole in FIG. 2(a), is a wall structure member in the example shown in FIGS. 1, 2(a) and 2(b). Is fixed to the hat-shaped steel sheet pile 32.

The hat-shaped steel sheet pile 32 includes a flange 32a, an arm portion 32b, and a joint portion 32c that mainly resist a bending moment when a load such as earth pressure is applied, and a web 32d that mainly resists a shearing force. More specifically, in the hat-shaped steel sheet pile 32, a pair of webs 32d are continuously arranged so as to expand outward from both edges of the flange 32a, and each web 32d is arranged substantially parallel to the flange 32a. Thus, the arm portions 32b are continuously arranged, and the joint portions 32c are continuously provided to the respective arm portions 32b.

An upper opening claw 32c1 is formed on one side of the joint portion 32c of the hat-shaped steel sheet pile 32, and a lower opening claw 32c2 is formed on the other side of the joint portion 32c. The upper opening claw 32c1 and the lower opening claw 32c2 are formed in shapes complementary to each other, and the upper opening claw 32c1 of the joint portion 32c of one hat-shaped steel sheet pile 32 is joined to the adjacent hat-shaped steel sheet pile 32 of the other. By fitting the lower opening claw 32c2 of the portion 32c, or by connecting the lower opening claw 32c2 of the joint portion 32c of one hat-shaped steel sheet pile 32 to the upper opening claw of the joint portion 32c of the other adjacent hat-shaped steel sheet pile 32. By fitting 32c1, it is possible to fit a desired number of hat-shaped steel sheet piles 32.

The joint structure 30 includes a tubular joint 36 fixed to the back surface of the flange 32a of the hat-shaped steel sheet pile 32 by welding 34. The tubular joint 36 is formed of an annular cross-section member (for example, a circular steel pipe or a square steel pipe). The tubular joint 36 is provided with a fitting slit 36a extending in the longitudinal direction at a predetermined portion in the cross-sectional direction.

A slit width adjusting member 38 for narrowing the slit width is provided on each of both edges of the fitting slit 36a of the tubular joint 36. That is, as shown in FIG. 2C, the initial width of the fitting slit 36a is B+2×ΔB, but the required slit width B can be obtained by installing the slit width adjusting member 38. Note that ΔB may have different values such as ΔB1 and ΔB2. In this case, the initial width of the fitting slit 36a is B+ΔB1+ΔB2, but the required slit width B can be obtained by installing the slit width adjusting member 38. The slit width adjusting member 38 is fixed to the tubular joint 36 by fusion welding means, but may be fixed to the tubular joint 36 by using mechanical means (not shown). The welding when fixing the slit width adjusting member 38 to the tubular joint 36 by welding may be continuous welding or intermittent welding. If intermittent welding is adopted, processing cost can be reduced and processing period can be shortened.

The gap formed by the fitting slit 36a and the male joint fitted therein is defined by JIS A5523 (hot-rolled steel sheet pile for welding) and JIS A5528 (hot-rolled steel sheet pile). It is desirable to install the slit width adjusting member 38 so as to be approximately the same as the clearance of the fitting portion. The specific value of the gap is about 1 mm to 5 mm. The gap is preferably narrow as long as it does not hinder the placement of the wall component.

The slit width adjusting member 38 is formed of a steel member. As the slit width adjusting member 38, various members such as flat steel (see FIG. 3A and FIG. 3B), round bar (see FIG. 3C and FIG. 3D), square bar (See FIGS. 3E and 3F), angle steel (see FIGS. 4A to 4D), and the like are used.

Further, the slit width adjusting member 38 may be installed only on one edge of the fitting slit 36a, not on both edges (see FIGS. 5A and 5B). If it is installed only on one edge, the processing cost and the processing period can be shortened.

In the example shown in FIGS. 1 to 5, the tubular joint 36 is formed of an annular cross-section member, but as shown in FIGS. 6A and 6B, the tubular joint 36 is tubular with a pair of angle steels. The joint 36 may be formed.

An example in which a hat-shaped steel sheet pile is used as the wall component member has been described, but the configuration of the joint structure is substantially the same even when other steel sheet piles are used. FIG. 7 is a diagram showing an example in which the joint portions on both sides of the U-shaped steel sheet pile 40 are cut to install the tubular joint 36, and the tubular joint 36 is also installed on the outer surface of the flange. In the cylindrical joint 36, a slit width adjusting member 38 is installed at the edge of the fitting slit 36a, as in the example shown in FIGS.

FIG. 8A and FIG. 8B are views showing an example in which the tubular joint 36 is installed on the normal-line bent portion steel sheet piles 42 and 44 used at the bending points of the driving normal. Similarly to the example shown in FIGS. 1 to 7, the tubular joint 36 shown in FIGS. 8A and 8B has the slit width adjusting member 38 installed at the edge of the fitting slit 36a. There is. In addition, the normal bending part steel sheet piles 42 and 44 are made by assembling two joined steel sheet piles at a predetermined angle and joining them together (normally, the normal bending portion steel sheet piles are referred to as deformed steel sheet piles). In the present application, this is also referred to as a wall body constituting member).

In addition, the tubular joint 36 may be provided over the entire length of the main body of the wall body, or may be shorter than the total length, and a predetermined range (at least the sediment present on the back surface of the wall may cause sediment leakage). It may be provided over the range).

(Joint structure for steel pipe sheet pile)
Next, a joint structure in the case where a steel pipe sheet pile is used as the wall component member will be described. 9 is a plan view showing a part of a wall body formed by a steel pipe sheet pile, and FIG. 10(a) is an enlarged view of a portion 10a of FIG.

The wall body 50 shown in FIG. 9 is formed by fitting a plurality of steel pipe sheet piles 52 (five pieces are shown in FIG. 9) through a joint described later, and is constructed between the sea and the land. (In FIG. 9, the right side is shown as the sea and the left side is shown as the land (sand)).

The joint structure 54 for the steel pipe sheet pile 52 has a pair of tubular joints 56 provided at portions of the steel pipe sheet pile 52 opposed to each other in the diametrical direction. The tubular joint 56 is formed by an annular cross-section member (for example, a circular steel pipe). The tubular joint 56 is provided with a slit 56a extending in the longitudinal direction (y direction) at a predetermined portion in the cross-sectional direction. Then, the slits 56a of the tubular joint 56 of one of the steel pipe sheet piles 52 are fitted into the slits 56a of the tubular joint 56 of the other adjacent steel pipe sheet pile 52 to combine the desired number of steel pipe sheet piles 52. You can

A slit width adjusting member 58 for narrowing the slit width is provided at the edge of the fitting slit 56a of the tubular joint 56. That is, as shown in FIG. 10B, the initial width of the fitting slit 56a is B+ΔB, but the required slit width B can be obtained by installing the slit width adjusting member 58. Although the slit width adjusting member 58 is fixed to the tubular joint 56 by fusion welding means, it may be fixed to the tubular joint 56 by using mechanical means (not shown). Although two slit width adjusting members 58 are installed in FIG. 10A, the number of slit width adjusting members 58 installed may be one (see FIG. 10C).

FIG. 11 shows another form of joint structure. That is, instead of the pair of tubular joints 56, the joint structure includes a tubular joint (female joint) 56 provided at one of the diametrically opposed portions of the steel pipe sheet pile 52 and a diametrical direction of the steel pipe sheet pile 52. It has a T-shaped joint (male joint) 60 provided at the other of the facing portions. The tubular joint 56 is formed by an annular cross-section member (for example, a circular steel pipe). The tubular joint 56 is provided with a slit 56a extending in the longitudinal direction (y direction) at a predetermined portion in the cross-sectional direction. By inserting the T-shaped joint 60 into the slit 56a of the tubular joint 56, A desired number of steel pipe sheet piles 52 can be combined.

A slit width adjusting member 58 for narrowing the slit width is provided at the edge of the fitting slit 56a of the tubular joint 56. That is, as shown in FIG. 11B, the initial width of the fitting slit 56a is B+2×ΔB, but the required slit width B can be obtained by installing the slit width adjusting member 58. Note that ΔB may have different values such as ΔB1 and ΔB2. In this case, the initial width of the fitting slit 36a is B+ΔB1+ΔB2, but the required slit width B can be obtained by installing the slit width adjusting member 38. Although the slit width adjusting member 58 is fixed to the tubular joint 56 by fusion welding means, it may be fixed to the tubular joint 56 by using mechanical means (not shown). Although two slit width adjusting members 58 are installed in FIG. 11A, the number of slit width adjusting members 58 installed may be one (see FIG. 11C).

FIG. 12 shows a joint structure of still another form. That is, in this joint structure, instead of the pair of tubular joints 56, the tubular joint (female joint) 62 is provided at one of diametrically opposed portions of the steel pipe sheet pile 52 and is formed of a pair of chevron steel. And a T-shaped joint (male joint) 60 provided at the other of the diametrically opposed portions of the steel pipe sheet pile 52. In the tubular joint 62, the gap between the pair of chevron steels becomes the slit 62a extending in the longitudinal direction (y direction), and the T-shaped joint 60 is inserted into the slit 62a of the tubular joint 62 to obtain a desired number of pieces. The steel pipe sheet piles 52 can be joined together.

A slit width adjusting member 64 for narrowing the slit width is provided at the edge of the fitting slit 62a of the tubular joint 62. That is, as shown in FIG. 12B, the initial width of the fitting slit 62a is B+2×ΔB, but the required slit width B can be obtained by installing the slit width adjusting member 64. Note that ΔB may have different values such as ΔB1 and ΔB2. In this case, the initial width of the fitting slit 36a is B+ΔB1+ΔB2, but the required slit width B can be obtained by installing the slit width adjusting member 38. Although the slit width adjusting member 64 is fixed to the tubular joint 62 by fusion welding means, it may be fixed to the tubular joint 62 by using mechanical means (not shown). In FIG. 12A, two slit width adjusting members 64 are installed, but the number of slit width adjusting members 64 installed may be one (see FIG. 12C).

The slit width adjusting members 58 and 64 are formed so that the gaps formed by the fitting slits 56a and 62a and the male joints fitted therein are in accordance with the description in the section of the joint structure for steel sheet pile. It is desirable to install it. The specific value of the gap is about 1 mm to 5 mm. In addition, it is the same as in the case of the joint structure for the steel sheet pile that the gap is preferably narrow as long as it does not hinder the driving of the wall constituting member.

FIG. 13A is a diagram showing a state in which the U-shaped steel sheet pile 40 is branched from the wall body formed by the steel pipe sheet pile 52. The joint portion of the U-shaped steel sheet pile 40, which is a male joint, is fitted into the fitting slit 56a of the tubular joint 56, which is fixed to the steel pipe sheet pile 52 and serves as a female joint. As shown in FIG. 13B, a slit width adjusting member 58 is installed on the tubular joint 56.

The tubular joint 56, which is a female joint, may be provided over the entire length of the wall body forming member main body, as in the tubular joint 36 for steel sheet pile, or may be shorter than the overall length, and the predetermined range (at least, It may be provided over a range where the earth and sand existing on the back surface of the wall body may cause the earth and sand leakage. FIG. 14: is a schematic diagram which showed the example of installation to a wall body structural member of a female joint and a male joint. In FIG. 14( b ), a female joint is installed in the upper half of one side of the wall component member, a male joint in the upper half of the other side of the wall component member, and a guide part in the lower half. Is installed. FIG. 14C is the same as the example of FIG. 14B except that the guide portion is intermittently installed. The guide portion is useful for improving the fitting workability of the joint, particularly when the wall member is a steel pipe sheet pile. The upper end of the wall component is usually embedded in the upper concrete (see FIG. 14(a)).

(Joint structure filled with filler)
Preferably, the tubular joint is filled with a solid filler 46. Explaining the tubular joint 36 as an example, as shown in FIG. 15A, the inside of the tubular joint 36 is filled with a filler 46. As the filler 46, for example, a solid filler (styrofoam, urethane foam, etc.) or a time-curable filler (bituminous material, urethane, rubber, soil cement, etc.) is used. By filling the inside of the tubular joint 36 with the filler 46, it is possible to more reliably and easily prevent earth and sand leakage.

Further, when a solid filler (styrofoam, urethane foam, etc.) is used as the filler 46, a cut 46a may be provided at a predetermined portion of the filler 46 (FIG. 15(b), FIG. 15( See c)). By providing the cut 46a, when the male member is inserted into the fitting slit 36a, the male member is inserted into the cut 46a, the filler 46 is smoothly broken, and the gap is eliminated. Leakage can be prevented.

The filler 46 and the cut 46 a to the filler 46 are similarly applied to the tubular joints 56 and 62.

(Wall body, construction method of wall body)
A desired wall body is constructed by appropriately connecting or combining the wall body constituent members having the above-mentioned joint structure and using a predetermined construction method. Not only the double-wall type, but also various structures using wall structure members such as steel sheet piles and steel pipe sheet piles listed in the design standards such as "Technical standards and explanations for port facilities". It can be applied to formats (preliminary type, freestanding type, shelf type, etc.).

The present invention is not limited to the above-described embodiments of the invention, and various modifications are possible within the scope of the invention described in the claims, and they are also included in the scope of the invention. It goes without saying that it is one.

10 Walls 12, 14 Front Walls, Rear Walls 16, 18 Partition Walls 20 Box 22 Internal Space 30 Joint Structure for Steel Sheet Pile 32 Wall Body Components (Hat Shaped Steel Sheet Pile)
34 Welding 36 Cylindrical joint 36a Slit for fitting 38 Slit width adjusting member 40 Wall component member (U-shaped steel sheet pile)
42 wall component (steel sheet pile with normal bending part)
44 Wall body component (steel sheet pile with bent normal)
46 Filler 46a Break 50 Wall 52 Steel pipe sheet pile 54 Joint structure for steel pipe sheet pile 56 Cylindrical joint 56a Fitting slit 58 Slit width adjusting member 60 T-type joint (male joint)
62 Cylindrical Joint Made of Angle Steel 62a Fitting Slit 64 Slit Width Adjusting Member 80 Wall (Prior Art)
82, 84 front wall, rear wall 86, 88 partition wall 90 joint structure

The joint structure of the wall body constituting member forming a part of the wall body described in claim 1 of the present application is a female joint fixed to a predetermined portion of the wall body constituting member and having a male joint fitted therein. A tubular joint is provided, which extends in the longitudinal direction in the tubular joint and is provided with a fitting slit having a width larger than a required width, and the outer surface of one of both edges of the fitting slit or one edge A slit width adjusting member for narrowing the width of the fitting slit so as to have the required slit width is installed on the outer surface .

Claims (9)

A joint structure of wall member constituting a part of the wall,
A tubular joint fixed to a predetermined portion of the wall body forming member and serving as a female joint into which a male joint is fitted,
The cylindrical joint is provided with a fitting slit extending in the longitudinal direction,
A joint structure, wherein a slit width adjusting member for narrowing the slit width is installed near the fitting slit. The joint structure according to claim 1, wherein the slit width adjusting member is formed of a steel member and is fixed in the vicinity of the fitting slit by fusion welding means or mechanical means. The joint structure according to claim 1 or 2, wherein a filler is filled inside the tubular joint. The joint structure according to claim 3, wherein the filler is a solid filler such as styrofoam or urethane foam. The joint structure according to claim 4, wherein a cut is provided at a predetermined portion of the filling material. The joint structure according to claim 3, wherein the filler is a time-curable filler such as a bituminous material, urethane, rubber, or soil cement. A wall body constituent member having the joint structure according to any one of claims 1 to 6. A wall body formed using the wall body constituent member according to claim 7. A method of constructing a wall body, which comprises forming a wall body using the wall body constituent member according to claim 7.

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