JPH0625409B2 - Cap concrete block for steel sheet pile wall - Google Patents

Description

TECHNICAL FIELD The present invention relates to a shade concrete block for steel sheet pile wall.

[Prior Art] Conventionally, a steel sheet pile wall in which steel sheet piles are continuously cast with their claw portions engaged with each other is generally used as a quay wall of the sea, rivers, etc. or a retaining wall on the ground. The upper portion of the steel sheet pile wall is well-shaped, and in the case of a quay wall, a cap concrete block 1 is applied as shown in FIG. 6 in order to form a mounting structure such as a fender. In this concrete cap block 1, for example, vertical and horizontal reinforcing bars 3 are fixed to the upper part of a steel sheet pile wall in a cage shape, a concrete formwork is set on the outer periphery thereof, and then concrete 4 is placed in the concrete formwork. After hardening, the mold is removed and the shade concrete block 1 is formed as described above.

[Problems to be Solved by the Invention] In the prior art, since the material is brought into the quay or the like provided with the steel sheet pile 2 to carry out the bar arrangement and the concrete pouring, that is, the work for the on-site casting. It takes a long time, and the concrete placed requires curing time. Furthermore, in order to cast concrete in-situ, it is necessary to position the shade concrete block above the water surface, and it is troublesome to carry out the above-mentioned reinforcing work and to install and remove the concrete block formwork having a complicated shape. there were. As a means for solving such a problem, Japanese Patent Laid-Open No. 52-154227 discloses a method in which two precast plates and a canopy block are cast and integrated with concrete. Since it is placed, the construction cost and construction period cannot be significantly reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a cap concrete block for a steel sheet pile wall that can be easily provided on the steel sheet pile wall in a short time.

[Means for Solving the Problem] In the present invention, a cap concrete block provided on an upper portion of a steel sheet pile wall in which claw portions are engaged and steel sheet piles are continuously cast is placed along the upper portion of the steel sheet pile wall. The side plate part provided along the steel sheet pile wall is connected to one side of the top plate part to be formed, and the top plate part and the side plate part are integrally formed by precasting, and the adjacent top plate parts face each other. The side surfaces are formed with step portions that engage with each other.

[Operation] The top plate part that is integrally formed with the precast concrete block is placed on top of the steel sheet pile wall, and the side plate part is set along the steel sheet pile wall, and then the shade concrete block is fixed to the steel sheet pile wall. To do.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

Reference numeral 11 is a steel sheet pile, and a steel sheet pile wall 13 is formed by engaging the mutual claw portions 12 and continuously driving. In addition, this steel sheet pile wall 13
The upper part 14 of the is set at almost the same height as the water surface 15.

16 is a shade concrete block, the shade concrete block 16 is formed with a top plate portion 17 to be placed on the upper portion 14 of the steel sheet pile wall 13, and the front side below the front side which is one side of the top plate portion 17 is A side plate portion 18 is vertically provided along the steel sheet pile wall 13 side. The cap concrete block 16 in which the top plate portion 17 and the side plate portion 18 are integrally formed is manufactured in advance in a factory by precasting. And this shade concrete block
A through hole 19 for fixing is formed in the side plate portion 18 of 13.
The through hole 19 and the steel sheet pile wall 13 facing the through hole 19
A screw rod 21 is inserted into the through hole 20 formed in the and the nuts 22 are screwed to both ends of the screw rod 21 to attach the cap concrete block 16 to the steel sheet pile.
It can be fixed to 13. Further, the top plate portion 17
A mounting hole 23 for fixing is vertically provided at the rear end of the lower surface of the, and an angled mounting seat 24 is fixed to the upper end on the back side of the steel sheet pile 13, and the mounting seat 24 is inserted into the mounting seat 24. The bolt 25 is screwed into the mounting hole 23. Alternatively, the mounting hole 23 may be a vertically provided through hole, a screw rod may be inserted therethrough, and nuts may be screwed on both ends of the screw rod to fix the both. 26
Is a tie rod whose one end is connected to the steel sheet pile wall 13, and 27 is a washer made of a rubber plate. 28 is an elastic plate such as rubber interposed between the upper portion 14 and the top plate portion 17. The cap concrete block 16 has a top plate portion 17 placed along the upper portion 14 of the steel sheet pile wall 13, and the side surfaces of the adjacent top plate portions 17 facing each other have step portions 29 that engage with each other. Is formed, and water is stopped by this step portion 29.

Next, the operation of the above configuration will be described.

A steel sheet pile so that the upper part 14 is approximately at the same level as the water surface 15 in advance.
A steel sheet pile wall 13 is formed by connecting 11 continuously. Next, the cap concrete block 16 is suspended by a crane (not shown) or the like so that the side plate portion 18 is along the steel sheet pile wall 13 and the top plate portion 17 is the steel sheet pile wall.
After mounting on the upper part 14 of 13, the screw rod 21 is inserted into the through holes 19 and 20, and nuts 22 are screwed on both ends of the screw rod 21 to fix the shade concrete block 13 to the steel sheet pile wall 13. . Next, insert the bolt 25 into the mounting seat 24 and insert the steel sheet pile wall 13 and the top plate 17
Is to be fixed.

As described above, since the shade concrete block 16 is manufactured in advance by precasting and set on the steel sheet pile wall 13, the shade concrete block 16 can be fixed by fixing the both with the screw rod 21 and the bolt 25. ,
The work can be completed in a short time by eliminating the bar arrangement and concrete placement on the site, and the work period can be shortened by eliminating the curing period on site. In addition, the work cost can be reduced and the construction is not affected by the weather because there is no need for the on-site reinforcement work and the installation and removal of complicated concrete block formwork.

Further, since the shade concrete block 16 is made of precast, it can be installed even in an underwater portion, so that the upper portion 14 of the steel sheet pile wall 13 can be set at substantially the same height as the water surface. For this reason steel sheet pile
The length of 11 can be shortened and the cost can be reduced.
Further, the quality of the shade concrete block 16 can be improved. Further, at the time of repair, the cap concrete block 16 can be easily replaced by loosening the screw rod 21 and the bolt 25.

Moreover, the shade concrete block 16 includes a top plate portion 17 and a side plate portion 18.
Since it is integrally formed into an L shape, it can be easily manufactured and the appearance of the upper part of the steel sheet pile wall 13 can be improved. Further, since the top plate portion 17 is placed on the upper portion 14 of the steel sheet pile wall 13, the stability is excellent. Further, by forming the step portion 29 on the side surface of the shade concrete block 16, the contact area with the adjacent shade concrete block 16 can be increased, and as a result, the water blocking effect can be improved and the step portion 29 can be formed.
Due to the mutual engagement, alignment and the like at the time of installation can be easily performed.

4 and 5 show a second embodiment and a third embodiment, the same parts as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In the second embodiment, one cap concrete block
A flat surface 31, a tapered surface 32 as a step portion, a flat surface 33, a convex portion 34 as a step portion and a flat surface 35 are formed on one side surface of 16A, and the other cap concrete block 16 facing the one side surface 16A.
On the other side surface of B, a flat surface 31A, a tapered surface 32A that is a step,
A flat surface 31A, a stepped recess 24A, and a flat surface 35A are formed, and these are abutted to each other to form the shade concrete blocks 16A and 16B in parallel. A water blocking packing 36 made of an elastic material such as rubber is provided between the tapered surfaces 32, 32A.
Is provided.

Therefore, water leakage and the like can be prevented by the abutting portions of the tapered surfaces 32 and 32A and the water blocking packing 36.

In the third embodiment, one cap concrete block
Flat surface 37 on one side of 16A, tapered surface 38 that is a step, flat surface
39, a circular convex portion 40 as a step and a flat surface 41 are formed, and another shade concrete block facing the one side surface
On the other side of 16B, a flat surface 37A and a tapered surface 38 that is a step
A, flat surface 39A, stepped circular recess 40A and flat surface 41
A is formed, and a water blocking packing 42 is provided on the tapered surfaces 38, 38A to perform water blocking treatment.

Note that the present invention is not limited to the above-described embodiment, and various modifications such as fixing a mounting seat such as an angle to the shade concrete block side and fixing the mounting seat to the steel sheet pile wall through the mounting seat are possible. Is.

[Advantages of the Invention] The present invention relates to a cap concrete block provided on an upper portion of a steel sheet pile wall in which steel sheet piles are continuously cast by engaging claw portions, and a ceiling plate placed along the upper portion of the steel sheet pile wall. A side plate part provided along the steel sheet pile wall is provided continuously on one side of the part, and these top plate part and side plate part are integrally formed by precasting, and on the opposite side surfaces of the adjacent top plate part. By forming the step portions that engage with each other, it is possible to reduce the work at the site and shorten the construction cost and construction period, and by forming the step portions on the side surface of the top plate, The contact area on the side surface of the part can be increased to improve the water blocking effect, and the alignment at the time of installation can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing the first embodiment, FIG. 2 is the same plane sectional view, FIG. 3 is a longitudinal sectional view, and FIG. 4 is a plan view of the second embodiment.
FIG. 5 is a plan view of the third embodiment, and FIG. 6 is a sectional view of a conventional example. 11 …… Steel sheet pile, 12 …… Claw part 13 …… Steel sheet pile wall, 14 …… Upper part 16 …… Shape concrete block 17 …… Top plate part, 18 …… Side plate part 29 …… Step part 32, 32A, 38 , 38A ... Tapered surface (step) 34, 40 ... Convex (step) 24A, 40A ... Recess (step)

Claims (1)

[Claims] 1. A cap concrete block provided on an upper portion of a steel sheet pile wall in which steel sheet piles are continuously cast by engaging a claw portion, and a top plate portion placed along the upper portion of the steel sheet pile wall. A side plate portion provided along the steel sheet pile wall is continuously provided on the side, and the top plate portion and the side plate portion are integrally formed by precasting, and the side surfaces facing each other of the adjacent top plate portions are mutually engaged. A cap concrete block for a steel sheet pile wall, which is characterized in that a step portion is formed.