JPH0442491B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to joints for steel sheet piles used in reclamation work, bank protection work, embankment construction work, etc., and particularly relates to joints for steel sheet piles used in land reclamation work, bank protection work, embankment construction work, etc. Concerning sheet pile joints.

[Conventional technology]

Water-stopping steel sheet piles used for land reclamation work, bank protection work, embankment construction work, etc. are connected at both ends with mating ears and then poured and buried to prevent the collapse of earth walls before and after continuous steel sheet piles. However, since such steel sheet piles can only expand, contract, bend, and twist in each interlocking direction due to the displacement of the ground, they can only deform within the elastic limit of the steel, so the steel sheet piles can be easily disengaged. Alternatively, the steel sheet piles may be destroyed or deformed, or structures connected to the steel sheet piles may be damaged, which may impair the required functions of the steel sheet piles. Particularly in gutter pipe structures, the steel sheet pile waterstop wall undergoes large displacements due to uneven settlement and rear earth pressure, and these displacements are transmitted to the parapet waterstop walls, which maintains the overall structure of the gutter pipe and maintains its safety. There was a risk of loss.

In order to solve this problem, the present applicant proposed a joint for steel sheet piles, as disclosed in Japanese Patent Application Laid-Open No. 60-62325. In this joint, a flexible water-stopping member made of rubber, synthetic resin, etc. is extended along the opposite ends of the plate-like parts between the plate-like parts that have joints with adjacent steel sheet piles. If the steel sheet pile waterstop wall undergoes large displacement due to uneven settlement or rear earth pressure, the joint will expand, contract, bend, or otherwise deform due to the displacement of the steel sheet pile. This can effectively prevent disengagement and destructive deformation of the steel sheet piles, as well as damage to structures connected to the steel sheet piles.

[Problem that the invention seeks to solve]

The above-mentioned steel sheet pile joints can effectively produce the above effects if the expected displacement of the steel sheet piles due to ground subsidence, etc. is less than the allowable displacement of the flexible water-stopping member of the joint. If the ground at the site is extremely soft and there is significant ground subsidence, and the displacement of the steel sheet pile exceeds the allowable displacement of the flexible water-stopping member,
The flexible water-stopping member may be damaged due to excessive deformation, and the function of the joint may be impaired.

The present invention solves the above-mentioned problems in steel sheet pile joints, and provides a steel sheet pile joint equipped with an excessive deformation prevention mechanism that can prevent damage caused by excessive deformation of a flexible water stop member in the event of large ground changes. The purpose is to provide

[Means to solve problems]

The steel sheet pile joint of the present invention that achieves the above object is:
A flexible water-stopping member made of rubber, synthetic resin, etc. is installed so as to extend along the opposite ends of the plate-shaped parts between the plate-shaped parts that have joints with adjacent steel sheet piles. This joint for steel sheet piles is characterized in that a stopper means is provided between the plate-like parts to limit relative displacement in the longitudinal direction of the plate-like parts to a predetermined value or less.

In addition, the steel sheet pile joint of the present invention according to another structure for achieving the above object includes a flexible water-stopping member made of rubber, synthetic resin, etc. between the plate parts having the joining joint part with the adjacent steel sheet pile. In a steel sheet pile joint formed by extending and straddling the opposite ends of plate-shaped parts, one of the plate-shaped parts is arranged so as to protrude from the other by a predetermined length, and this The present invention is characterized in that a stopper member extending above the other plate-like part is fixed to the top of one of the protruding plate-like parts.

Furthermore, another feature of the present invention is that a plurality of steel sheet pile joints configured as described above are used in combination.

[Effect]

According to the present invention, by providing the stopper means between the plate parts to limit the relative displacement in the longitudinal direction between the plate parts to a predetermined value or less, ground subsidence exceeding the allowable displacement amount of the flexible water stop member is caused. Even in such a case, the displacement of the flexible water stop member is limited to within the allowable displacement amount.

Further, according to the present invention, one of the plate-shaped parts is arranged so as to protrude from the other by a predetermined length, and the top of the one of the plate-shaped parts that protrudes is placed above the other plate-shaped part. By fixing the extending stopper member, if ground subsidence that exceeds the allowable displacement of the flexible water stop member occurs on the side of the protruding plate part, the stopper member will also be fixed as the protruding plate part sinks. By sinking and the stopper member coming into contact with the top surface of the other plate-like part, the displacement of the flexible water-stopping member is limited to within the allowable displacement amount.

Furthermore, according to the present invention, by using a plurality of joints in combination, the uneven subsidence of the ground is larger than the allowable limit displacement of one joint, and the relative displacement between the plate parts of one joint is If the amount of displacement due to uneven settlement cannot be absorbed by the joint alone, the displacement of one joint can be absorbed by the relative displacement between the plate parts of other joints before the allowable limit displacement of this joint is exceeded. Absorbs the amount of displacement.

〔Example〕

A first embodiment of a joint for steel sheet piles according to the present invention is described below.
As shown in FIG. In the following explanation,
A case will be described in which the joint according to the present invention is used as a joint for water-stop steel sheet piles for gutter pipes installed in embankment construction, but it goes without saying that the application of the joint for steel sheet piles of the present invention is not limited to this. .

When installing water intake/drainage sluices across a river embankment, as shown in Figure 2, install the sluices on the inside of the sluice pipe, on the outside of the levee, and at other appropriate locations within the sluice pipe body. A concrete impermeable wall b is provided that extends from a to both sides and above, and a steel sheet pile impermeable wall d consisting of a plurality of steel sheet piles c is provided on both sides and directly below this concrete impermeable wall b, and directly below the gutter pipe body. By doing so, damage to the embankment and the gutter pipe due to the generation of seepage water flow along the gutter pipe is prevented. We will also refer to them as gutter pipes). When installing water intake/drainage gutter pipes, excavate the part where the gutter pipes will be buried in the embankment e as shown by the dotted line f, and then install the concrete impermeable wall b.
A plurality of steel sheet piles c are driven into both sides and directly below the gutter pipe main body a, and a steel sheet pile water-blocking wall d is created.
After forming the gutter pipes, the gutter pipes and the impermeable wall d are backfilled.

Two steel sheet pile joints 1 are provided on both sides of the concrete impermeable wall b inside the steel sheet pile impermeable wall d. This steel sheet pile joint 1 is of the type disclosed in Japanese Patent Application Laid-Open No. 60-62325 filed by the present applicant, etc., except for the stopper means which is a feature of the present invention, and is of the type shown in Fig. 2. An enlarged plan view of the portion indicated by A is shown in FIG.

In FIG. 1, a joint 1 is located on both sides of a flexible water stop member 3 made of rubber, synthetic resin, etc.
It is composed of a long plate-like part 2 having a joining joint part 2a with the steel sheet pile c and a fixing part 2b of the flexible water stop member 3,
The mounting part 3a of the flexible water stop member 3 is overlapped with the fixing part 2b of the plate-like part 2, the contact plate 4 is applied, and the parts are fastened with bolts and nuts 5. That is, the flexible water stop member 3 is provided astride between the plate-like parts 2, 2 so as to extend along the plate-like parts 2, 2. Note that the shape of the flexible water stop member 3 is not limited to the illustrated example, and may be a flat plate or a corrugated plate 1.
Any material may be used as long as it can follow the displacement of the steel sheet pile while maintaining water-stopping properties, such as a plate-shaped body having a plurality of hollow parts.

In the embodiment shown in FIG. 1, the stopper means 10 includes at least one load-bearing member support made of L-shaped steel or the like, which is fixed to the plate portions 2, 2 in a generally horizontal position by a method such as welding. Members 6, 6 (Fig. 3) and the pair of load-bearing member supporting members 6, 6
It consists of a load-bearing member 7 made of a steel rod, a wire rope (the outer surface of which is coated with rubber, synthetic resin, etc. if necessary), etc., which is loosely fitted into a through hole 6a formed in the hole 6a. In this embodiment, the load-bearing member 7 is threaded at both ends, and nuts 8, 8 having an outer diameter larger than the diameter of the through hole 6a are screwed together. These nuts 8, 8 constitute a locking portion that prevents the load-bearing member from coming off from the through holes 6a, 6a. The length L1 between the inner ends of the locking parts 8, 8 of the load-bearing member 7 is the length L1 of the load-bearing member supporting member 6,
It is formed to be larger than the distance L2 between the outer sides of 6 by a predetermined value. Further, the through holes 6a, 6a of the load-bearing member supporting members 6, 6 allow the load-bearing member 7 to tilt to a predetermined angle within the through holes 6a, 6a when a relative displacement occurs in the longitudinal direction between the plate-like parts 2, 2. The diameter is set to a sufficient size, or the holes are set to be parallel to each other in the longitudinal direction of the plate-like portions 6, 6. In addition, the locking parts 8, 8 have through holes 6a,
It is sufficient as long as it can prevent withdrawal from 6a.
The shape etc. are not limited to the illustrated example.

At least one set of the stopper means 10 consisting of the pair of load-bearing member supporting members 6, 6 and the load-bearing member 7 is provided in each joint, but in order to obtain sufficient strength, the stopper means 10 is as shown schematically in FIG. It is preferable to provide a plurality of stopper means 10 over the entire length of the joint 1. In this case, when driving steel sheet piles, in the underground part (the part below the dotted line f in Fig. 2), the more stopper means 10 there are, the more difficult it becomes to drive the joint 1, so the number of stopper means 10 in this part should be a relatively small number, or the stopper means 10 should not be provided all the way, and the stopper means 10 should be kept in place on the ground where the joint is exposed and does not pose an obstacle during pouring (the part above the dotted line f in Fig. 2). It is preferable to increase the number of means 10. Further, the stopper means 10 may be provided not only on one side of the joint but also on both sides.

Next, the operation of the steel sheet pile joint according to the above embodiment will be explained.

Due to uneven subsidence of the ground, etc., one of the plate parts 2, 2 of the first joint 1 in a pair of joints 1, 1 sinks, and one plate part 2 becomes smaller than the other plate part 2. When displaced in the longitudinal direction, the load-bearing member 7 slides in the through hole 6a while being inclined, until the inner end surfaces of the locking portions 8, 8 of the load-bearing member 7 abut against the outer surfaces of the load-bearing member supporting members 6, 6. Relative displacement of one plate-like part 2 with respect to the other plate-like part 2 is allowed. The uneven subsidence of the ground is larger than this allowable limit displacement, and the plate-like parts 2, 2 of the first joint
If the displacement due to uneven settlement cannot be absorbed only by the relative displacement between the joints, the second
Among the plate-like parts 2, 2 of the joint 1, the plate-like part 2 on the side adjacent to the first joint 1 sinks and is displaced in the longitudinal direction with respect to the plate-like part 2 on the other side. Absorbs the amount of displacement that cannot be absorbed due to displacement of the joint. For example, the allowable limit displacement of each joint is 500mm.
600mm on the first fitting side when set to
If unequal settlement occurs, the first joint will absorb 500mm of displacement, and the second joint will absorb the remaining 100mm of displacement. However, the first
It is not always the case that the second joint operates only after the relative displacement of the first joint reaches the allowable limit displacement, but there are cases where both joints operate together, and when one reaches the permissible limit displacement, the second joint does not operate until the second joint Of course, the above displacement can be absorbed by the other joint. If the values of L1 and L2 are set appropriately so that this relative displacement amount is below the allowable limit displacement of the flexible water stop member 3, the displacement amount of the flexible water stop member 3 due to ground subsidence can be suppressed within the allowable displacement amount. be able to.

In addition, if the horizontal diameter or hole width of the through holes 6a, 6a is made larger than the diameter of the load-bearing member 7 to some extent, the joint 1 will not only be deformed due to shearing due to uneven subsidence of the ground, but also due to rear earth pressure. It is also possible to cope with torsional deformation of the joint 1 to some extent.

4 and 5 show other embodiments of the joint according to the invention. FIG. 4 is a front view showing the upper end of the joint 1, and FIG. 5 is an enlarged perspective view showing the load-bearing member support member. In each of the following embodiments, the same parts as those in the embodiment shown in FIGS. 1 to 3 are designated by the same reference numerals, and detailed explanation thereof will be omitted.

In the embodiment shown in FIGS. 4 and 5, the stopper means 10 includes at least one pair of load-bearing member supporting members 16 provided on the plate-shaped portions 2, 2 in a generally horizontal position by a method such as welding. 16 (Figure 4)
A flexible load-bearing member 17 such as a chain is connected at both ends to the pair of load-bearing member supporting members 16, 16. The load-bearing member supporting member 16 is L
It is made of a shaped steel or the like, and is fixed to the plate-shaped part 2 at a fixed part 16a, and a load-bearing member connecting part 16c having flexibility is rotatably pivoted to the upright part 16b. A load-bearing member 17 such as a chain is connected to this load-bearing member connecting portion 16c. Note that the load-bearing member connecting portion 16c is not limited to the semicircular arc-shaped annular member as shown in the figure, and the load-bearing member 17 is not limited to the semicircular arc-shaped annular member as shown in the figure. It may be of any shape as long as it has the function of being able to move to a certain state. The load-bearing member 17 having flexibility has a length corresponding to the load-bearing member connection points 18, 18 in the load-bearing member supporting members 16, 16.
It is formed so that it is larger than the distance L3 between them. As the flexible load-bearing member 17, various materials such as a chain and a rubber-coated steel wire can be used.

The operation of the embodiment shown in FIGS. 4 and 5 is similar to that of the embodiment shown in FIGS.
is displaced in the longitudinal direction with respect to the other plate-shaped part 2,
The load-bearing member 17 is displaced in the diagonal direction of the joint 1 from the hanging state shown in FIG. If the length of the load-bearing member 17 is L4, then
If the values of L3 and L4 are appropriately set so that this amount of displacement is below the allowable limit displacement of the flexible water stop member 3, the amount of displacement of the flexible water stop member 3 due to ground subsidence can be held within the allowable displacement amount. I can do it.

In this embodiment, as the stopper means 10, a load-bearing member 17 having bending flexibility such as a chain is used, so that not only the shearing deformation of the joint 1 due to uneven subsidence of the ground but also the twisting deformation of the joint 1 due to rear earth pressure etc. It can also function as a stopper even when the eyes are wide open.

FIG. 6 shows another embodiment of the joint according to the present invention, and is a front view showing the upper end of the joint 1.

In the embodiment of FIG. 6, the stopper means 10
At least one pair of load-bearing member supporting members 6, 6, which are provided diagonally to each other in the plate-shaped portions 2, 2 and are formed with through holes 6a, 6a for supporting the load-bearing member;
Through-hole 6 formed in the pair of load-bearing member supporting members 6, 6
Steel rods and wire ropes loosely fitted into a and 6a (the outer surface is covered with rubber, synthetic resin, etc. if necessary)
It consists of a load-bearing member 7 consisting of, etc. Like the load-bearing member 7 of the embodiment shown in FIGS. 1 to 3, the load-bearing member 7 has locking portions 8, 8 having a diameter larger than the diameter of the through holes 6a, 6a or the width of the hole at both ends, and The length between the inner ends of the locking parts 8, 8 is larger than the length between the outer sides of the load-bearing member supporting member by a predetermined value L5.

The joint of this embodiment is suitable for installation in a location where uneven ground subsidence is expected to occur only on one side of the plate parts 2, 2. When the plate-shaped part 2 on the left side in the figure is displaced in the longitudinal direction with respect to the other plate-shaped part 2 due to uneven subsidence of the ground, the load-bearing member 7 slides within the through hole 6a of the load-bearing member support member 6 on the left side,
Relative displacement of one plate-like part 2 with respect to the other plate-like part 2 is allowed until the inner end surface of the locking part 8 on the lower end side of the force-bearing member 7 comes into contact with the outer surface of the left-side force-bearing member supporting member 6. If the value of L5 is appropriately set so that this relative displacement is below the allowable limit displacement of the flexible water stop member 3, the amount of displacement of the flexible water stop member 3 due to ground subsidence can be suppressed within the allowable displacement amount. can.

In this embodiment, the rotation moment applied to the load-bearing member support members 6, 6 is smaller than the embodiments shown in FIGS. 1 to 3, and the load applied to the load-bearing member support members 6, 6 is small, so that the stopper means 10 The number of installations can be reduced.

FIG. 7 shows another embodiment of the present invention, and is a front view showing the upper end of the joint 1. In the embodiment shown in FIG. 7, parts that are the same as those in the embodiments shown in FIGS. 4 and 5 are denoted by the same reference numerals and detailed explanations will be omitted.

In the embodiment of FIG. 7, the stopper means 10
At least one pair of load-bearing member supporting members 16, 16 provided in the plate-like parts 2, 2 in diagonal directions to each other;
A load-bearing member 1 having flexibility such as a chain whose both ends are connected to these load-bearing member supporting members 16, 16.
7, and the force-bearing member 17 is formed so that its length is larger by a predetermined value than the distance between the connection points 18, 18 of the force-bearing member supporting member.

This embodiment, like the embodiment shown in FIG. 6, is suitable for installation in a location where uneven ground subsidence is expected to occur only on one side of the plate-shaped parts 2, 2. The operation of this embodiment is also similar to that of the embodiment shown in FIG.
When displaced in the longitudinal direction, the force-bearing member 17 is displaced from the hanging state shown in FIG. 7 to the taut state, allowing relative displacement between the plate-like parts 2, 2.
If the predetermined value in which the length of the load-bearing member 17 is longer than the distance between the connection points 18 and 18 is L6, then the value of L6 is set so that this relative displacement amount is equal to or less than the allowable limit displacement amount of the flexible water-stopping member 3. By appropriately setting , the amount of displacement of the flexible water stop member 3 due to ground subsidence can be suppressed within the allowable amount of displacement.

In this embodiment, as in the embodiment shown in FIG. 6, the load applied to the load-bearing member supporting members 16, 16 is small, so that the number of stopper means installed can be reduced. Further, in this embodiment, a force-bearing member 17 having flexibility such as a chain is used as a stopper means.
4 and 5, the stopper function can be exerted not only against shear deformation of the joint 1 but also against large openings due to torsional deformation.

FIG. 8 shows still another embodiment of the joint according to the present invention, in which FIG. 8a is a front view showing the upper end of the joint 1, and FIG. 8b is a plan view of the joint 1.

In the embodiment of FIG. 8, the stopper means 10
, a protruding member 21 provided on one plate-shaped part 2 so as to protrude through the cardboard 20, and the plate-shaped parts 2, 2.
A force-bearing member 23 made of a rigid body such as a steel material and having a U-shaped cross section is pivotally connected to the other plate-like portion 2 via a pin 22 or the like so as to straddle the one plate. A slot 24 extending in the longitudinal direction of the load-bearing member 23 is formed on the side of the shaped portion 2, and the protruding member 21 is loosely fitted into the slot 24 so as to be slidable along the slot 24.

The operation of this embodiment is similar to that of the embodiment shown in Figs. , while the protruding member 21 slides within the slot 24, the load-bearing member 23 is displaced in an oblique direction, and as shown in FIG.
As shown by the dotted line, the protruding member 21 is inserted into the slot 24.
Relative displacement between the plate-like parts 2 and 2 is allowed until the plate-like parts 2 and 2 come into contact with the outer end portions of the plate-like parts 2 and 2. Therefore, by appropriately setting the length of this slot, etc., the amount of displacement of the flexible water stop member can be held within the allowable amount of displacement.

FIG. 9 is a modification of the embodiment shown in FIG. 8, and is a front view showing the upper end of the joint 1. In the embodiment shown in FIG. 8, the load-bearing member 23 is pivotally attached to one of the plate-like parts 2, but in the embodiment shown in FIG. A pair of slots 24, 24 are formed at both ends of the load-bearing member, and a pair of protruding members 2
1 and 21 are loosely fitted into the slots 24 and 24 so as to be slidable along the corresponding slots 24 and 24, respectively.

The operation of this embodiment is almost the same as that of the embodiment shown in FIG. 8, but since a pair of slots are formed,
The allowable relative displacement amount of the plate portions 2, 2 can be increased accordingly.

FIG. 10 shows still another embodiment of the joint according to the present invention, and is a front view showing the upper end of the joint 1.

In the embodiment of FIG. 10, the stopper means 1
0 is the stopper means 10 in the embodiment of FIG.
In addition, a projection member 25 is provided to protrude from one plate-like part 2, and a protrusion member 25 is pivotally connected to the other plate-like part 2 by a pin 26 so as to diagonally straddle the plate-like parts 2, 2. It further includes a force-bearing member 27 made of a rigid body such as steel and having a U-shaped cross section. This load-bearing member 27 is formed with a slot 28 extending in the longitudinal direction of the load-bearing member 27 on the side of the one plate-shaped portion 2, and the protrusion member 25 is loosely fitted into the slot 28 so as to be slidable toward the inside of the slot 28. has been done. The structure and operation of the upper stopper mechanism are the same as those shown in FIG. 8, so a description thereof will be omitted.

The joint of this embodiment is suitable for installation in a place where uneven ground subsidence is expected to occur only on one side of the plate parts 2, 2, and the joint of the load-bearing member 2
7 is installed diagonally with the plate-like part 2 on the side where ground subsidence is expected (in the illustrated example, the left-hand plate-like part) facing upward. When the plate-like part 2 on the left side in the figure sinks due to uneven subsidence of the ground and is displaced relative to the other plate-like part 2, the protrusion member 25 slides toward the inside of the slot 28, and the load-bearing member 27 rotates. death,
When the load-bearing member 27 reaches the generally horizontal position shown in dotted lines in the figure, the projection member 25 engages the inner end of the slot 28. Therefore, the load-bearing member 2 is placed above.
3, the plate-like parts 2, 2 approach each other and the distance between the plate-like parts 2, 2 decreases. 25 is stopped by engaging the inner end of slot 28. Therefore, it is possible to limit excessive compressive deformation of the flexible water-stopping member 3 due to the mutual approach of the plate-shaped parts 2, 2, and it is possible to prevent damage to the flexible water-stopping member 3 due to such compressive deformation. can. or fitting 1
It is possible to prevent the joining joint portion 2a from separating from the adjacent steel sheet pile c.

In the embodiment of FIG. 10, the upper stopper mechanism employs the same mechanism as that of FIG. 8, but it is not limited to this, and can be combined with the stopper mechanism of any of the embodiments described above.

11 and 12 show still other embodiments of the joint according to the present invention, FIG. 11 is a diagram schematically showing the state of the joint in normal times and during ground subsidence, and FIG. FIG. 12b is a front view showing the upper end of the joint, and FIG. 12b is a side view thereof.

This example also shows that the uneven settlement of the ground is caused by the plate portions 2 and 2.
This is suitable for installation in locations where it is expected that the problem will occur only on one side. In this embodiment, as shown in Fig. 11, the plate portion 2 on the side where uneven settlement is expected (left side in the figure) is arranged in advance so as to protrude by a predetermined length L7, and this protrusion is On the top of one plate-shaped part 2, the other plate-shaped part 2 is attached.
A stopper mechanism is formed by fixing a stopper member 30 extending upwardly.

A specific example of this stopper member 30 is shown in FIG. 12.

The box-shaped stopper member 30 is on one side (left side in the figure)
It is fixed to the top surface 2c of the plate-like part 2 by a method such as welding, and is reinforced with brackets 31, 31. The stopper member 30 projects above the other plate-shaped portion 2. Before the joint 1 is cast, the end of the stopper member 30 on the other plate-like part 2 side is connected to the horizontal plate 32 in order to facilitate the casting work.
It is fixed to the upper end of the other plate-shaped part 2 by a method such as welding by a joint member 32 consisting of a vertical plate 32b and a vertical plate 32b. Further, a vibrohammer gripping member 33 made of a steel plate is fixed to the top surface of the stopper member 30 by welding or the like. Note that the stopper member 30 is not limited to the box shape, but may have other shapes such as an I-shape or a U-shape. When the successor member 32 and the vibrohammer gripping member 33 on which the joint 1 thus formed is cast are cut by a method such as fusing, the joint 1 is installed in the state shown in FIG. 11a.

When one of the protruding plate parts 2 sinks due to ground subsidence, the stopper member 30 also sinks, as shown in FIG. 11b, and the stopper member 30 comes into contact with the top surface of the other plate part 2. Since the displacement of the flexible water stop member 3 is limited to the amount of sinking L7 of the stopper member 30, the amount of sinking of the stopper member 30
By setting L7 to be less than or equal to the permissible displacement limit of the flexible water-stopping member 3, damage to the flexible water-stopping member due to excessive deformation can be prevented. If the uneven subsidence of the ground is larger than the allowable limit displacement L7 of the left joint 1, the gap between the plate parts 2 and 2 of the adjacent right joint 1 will be removed before the allowable limit displacement L7 of the left joint 1 is exceeded. Due to the relative displacement, the amount of displacement that could not be absorbed by the left joint 1 can be absorbed.

〔Effect of the invention〕

As described above, according to the present invention, since the stopper means for limiting the relative displacement of the plate-shaped parts in the longitudinal direction between the plate-shaped parts to a predetermined value or less is provided between the plate-shaped parts, the permissible displacement amount of the flexible water-stopping member is Even if the ground subsidence exceeds the amount, the displacement of the flexible water-stopping member is limited to within the allowable displacement amount, and damage to the flexible water-stopping member due to excessive deformation can be prevented.

Further, according to the present invention, one of the plate-shaped parts is arranged so as to protrude from the other by a predetermined length, and the top of the one of the plate-shaped parts that protrudes is placed above the other plate-shaped part. Since the stopper member to be extended is fixed,
If ground subsidence exceeding the allowable limit displacement of the flexible water-stopping member occurs on the side of the protruding plate, the stopper member also sinks as the protruding plate subsides, and the stopper member displaces the other plate. By coming into contact with the top surface of the shaped portion, the displacement of the flexible water stop member is limited to within the allowable displacement amount, and damage due to excessive deformation can be prevented.

Furthermore, according to the present invention, by using a plurality of joints in combination, the uneven subsidence of the ground is larger than the allowable limit displacement of one joint, and the relative displacement between the plate parts of one joint is If the amount of displacement due to uneven settlement cannot be absorbed by using only one joint, the amount of displacement that could not be absorbed by the displacement of one joint can be absorbed by the relative displacement between the plate parts of other joints. Even large uneven settlements can be dealt with by appropriately increasing the number of joints combined.

Note that the plurality of joints to be combined are not necessarily connected directly adjacent to each other, and one or more steel sheet piles may be interposed between the joints.

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the joint according to the present invention, FIG. 2 is a front view of the same embodiment, FIG. 3 is a perspective view of the load-bearing member support member 6 of FIG. 1, and FIG. A front view showing another embodiment of the joint according to the present invention, FIG. 5 is a perspective view of the load-bearing member support member 16 of FIG. 4,
FIG. 6 is a front view showing another embodiment of the joint according to the present invention, FIG. 7 is a front view showing another embodiment of the joint according to the present invention, and FIGS. 8a and 8b are joints according to the present invention. 9 is a front view showing another embodiment of the joint according to the present invention, and FIG. 10 is a front view showing another embodiment of the joint according to the present invention. , FIG. 11 is a front view schematically showing still another embodiment of the joint according to the present invention, and FIG.
Figures 2a and 2b are a front view and a side view showing one specific example of the same embodiment. DESCRIPTION OF SYMBOLS 1... Joint, 2... Plate-shaped part, 3... Flexible water stop member, 10... Stopper means, 30... Stopper member.

Claims (1)

[Scope of Claims] 1. A flexible water-stopping member made of rubber, synthetic resin, etc. is provided between plate-shaped parts having joints with adjacent steel sheet piles so as to extend along opposite ends of the plate-shaped parts. A joint for steel sheet piles which is installed across the plate parts, characterized in that a stopper means is provided between the plate parts to limit relative displacement in the longitudinal direction between the plate parts to a predetermined value or less. Fittings. 2. The stopper means includes at least one pair of load-bearing member supporting members provided in the plate portion at a generally horizontal position and having a through hole for supporting the load-bearing member; The load-bearing member is loosely fitted into the hole, and the load-bearing member has locking portions at both ends, and the length between the inner ends of the locking portions at both ends is longer than the distance between the outer sides of the load-bearing member supporting member. The steel sheet pile joint according to claim 1, wherein the steel sheet pile joint has a large diameter. 3. The stopper means includes at least one pair of load-bearing member supporting members provided in a substantially horizontal position on the plate-shaped portion, and a flexible load-bearing member having both ends fixed to the pair of load-bearing member supporting members. 2. The steel sheet pile joint according to claim 1, wherein the flexible load-bearing member has a length greater than the distance between each fixing point of the load-bearing member in the load-bearing member support member. 4. The stopper means includes at least one pair of load-bearing member supporting members formed with through holes for supporting the load-bearing members provided diagonally to each other in the plate-like portion, and a plurality of support members of the pair of load-bearing member supporting members. The load-bearing member is loosely fitted into the through hole, and the load-bearing member has locking portions at both ends, and the length between the inner ends of the locking portions at both ends is the length between the outer sides of the load-bearing member supporting member. The steel sheet pile joint according to claim 1, wherein the joint is larger than the diameter of the steel sheet pile. 5. The stopper means includes at least one pair of load-bearing member support members provided diagonally to each other on the plate-shaped portion, and a flexible load-bearing member whose both ends are connected to the pair of load-bearing member support members. 2. The steel sheet pile joint according to claim 1, wherein the load-bearing member having flexibility has a length larger than a distance between connection points of the load-bearing member in the load-bearing member supporting member. 6. The stopper means includes a protruding member provided to protrude from one side of the plate-like part, and a force-bearing member made of a rigid body pivotally connected to the other plate-like part so as to straddle the plate-like part. The load-bearing member is provided with a slot extending in the longitudinal direction of the load-bearing member on the side of the one plate-shaped portion, and the projecting member is loosely fitted into the slot so as to be slidable along the slot. The steel sheet pile joint according to claim 1, characterized in that: 7. The stopper means includes a pair of protruding members provided to protrude from each of the plate-like parts, and a load-bearing member made of a rigid body disposed so as to straddle the plate-like parts, A pair of slots extending in the longitudinal direction of the load-bearing member are formed at each end of the member, and the pair of projecting members are slidably inserted into the slots along corresponding ones of the pair of slots. The steel sheet pile joint according to claim 1, wherein the joint is loosely fitted. 8. The stopper means consists of a protruding member provided to protrude from one side of the plate-like part, and a rigid body pivoted to the other side of the plate-like part so as to straddle the plate-like part in an oblique direction. The load-bearing member is further provided with a slot extending in the longitudinal direction of the load-bearing member on the side of the one plate-like portion, and the projecting member is slidably inserted into the slot toward the inside of the slot. 8. The protruding member is loosely fitted into the slot, and when the load-bearing member rotates and reaches a substantially horizontal position, the protruding member engages with the inner end of the slot. Steel sheet pile joints described in . 9 A flexible water-stopping member made of rubber, synthetic resin, etc. is installed so as to extend along the opposite ends of the plate-shaped parts between the plate-shaped parts having joints with adjacent steel sheet piles. In a joint for steel sheet piles, one of the plate-like parts is arranged so as to protrude from the other by a predetermined length, and the top of one of the protruding plate-like parts is placed above the other plate-like part. A joint for steel sheet piles, characterized in that a stopper member that extends to is fixed. 10. The steel sheet pile joint according to claim 1, wherein a plurality of the joints are used in combination.