JP3013207U - Concrete Kasagi block - Google Patents

Abstract

(57) [Summary] [Construction] A concrete cap stand having a U-shape, having an opening 16 at the top and a protruding bottom 14 provided on one side of the bottom so as to match the shape of the recess of the steel sheet pile 1. block. [Effect] In-situ casting with concrete is extremely reduced. Since the projecting bottom is formed on the bottom of the concrete shade block, the strength and stability can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a concrete capping block for finishing a sea wall constructed by steel sheet piles on rivers and coasts, since the upper end surface of the steel sheet pile after construction impairs the landscape.

[0002]

[Prior art]

 In this type of revetment made of steel sheet piles on rivers and coasts, the upper end surface of the steel sheet piles after construction is unstable, and there is a problem in strength, and the landscape is impaired. The upper end surface of the sheet pile was wrapped and reinforced to improve the landscape. This prior art will be described. As shown in FIG. 6, in order to mount a long wooden square timber 2 having a cross section of a predetermined size on the front surface, a water thread is stretched to a predetermined height, and the front timber material is aligned with the water thread. The set pin 8 is welded, and then the back corner block set pin 6 is similarly welded.

After placing the wooden lumber 2 on the square timber retaining pins 8 and 6 welded to the front and back sides in this way, the bottom plate lumber retaining pin 7 at the back of the front is welded at the same height as the upper surface of the wooden lumber 2.

Next, a large number of bottom plate materials 3 cut out in a shape that fits the unevenness of the steel sheet pile 1 are prepared and placed in advance, and the convex ends of the bottom plate materials 3 are placed on the bottom plate material retaining pins 7 on the back front side. After placing the other end of the above on the wooden block 2, lightly nail it with a few thin nails so that it will not move when pouring fresh concrete.

Next, the chamfering member 9 is attached to a predetermined position in advance, and the front plate member 4 having a bolt hole is provided as shown in FIG.

Next, the separate bolt 10 is passed through a bolt hole provided in the front plate member 4 in advance and fixed to the front plate member 4 with a countersunk nut 12 and a square nut 13. The end face of the steel sheet pile 1 is located near the middle of the separate bolt 10. Weld both at a position that contacts.

On the back side, as shown in FIG. 6, the back plate member 5 without the chamfering member 9 is nailed to the wooden square member 2 by aligning the upper end with the front plate member 4. Of course, the back plate member 5 also has bolt holes at predetermined positions, so it is necessary to insert bolts through these bolt holes.

Thus, like the front plate member 4, the back plate member 5 is also tightened and fixed at a predetermined position with the countersunk nut 12 and the square nut 13.

Here, the back side is backfilled to the height of the separate bolt 10 and a little pressure is applied. It is assumed that the soil on the back side is filled with the steel sheet pile 1 at the height of the back timber retaining pin 6 after being driven.

With the above, the work of the formwork is completed, and after arranging the necessary amount of rebar, pouring fresh concrete from the opening on the top surface and allowing the concrete to solidify, the two ends of the separate bolt 10 The square nut 13 is removed, the back surface backfill material is dug to remove the wooden timber 2 and the back plate material 5, and the backfill material is refilled and pressed.

The front plate 4 is also removed together with the wooden timber 2, and the tip of the separate bolt 10 protruding forward and backward is twisted with a wrench to remove the separate bolt 10 together with the countersunk nut 12 at the constricted portion 11. Can be done. Next, mortar is filled in the hole from which the dish nut 12 has been removed, and finally the front corner timber retaining pin 8 is melt-cut to finish the work for attaching the steel sheet pile 1 to the shed.

In the above process, since the bottom plate material 3 is wrapped in concrete and cannot be removed, it remains as it is. The above-mentioned items have been generally known.

[0013]

[Problems to be solved by the device]

 However, the seawall protection technology for steel sheet piles on rivers and coasts in the above-mentioned conventional technology has been carried out by enclosing and reinforcing the upper end surface of steel sheet piles with cast-in-place concrete to improve the landscape. As shown in Fig. 2, the end face of the sheet pile is "Ω-shaped with its mouth wide open" and every other one is driven by alternately inverting the front and back faces. It was not easy to process and assemble the formwork when casting concrete on site.

Further, in the conventional method of capping the upper end surface of the steel sheet pile, the driven steel sheet pile is deformed by a unit of several mm due to the influence of earth pressure at the time of driving. However, the front surface of the steel sheet pile also had some irregularities, and there was a problem that it was not finished in a straight line.

In view of these circumstances, the present invention substantially eliminates the need for machining and assembling of a formwork for in-situ casting of concrete, and most of the concrete part is a mass-produced prone U-shaped projecting bottom part. It is an object of the present invention to provide a concrete cap stand block that can be mass-produced in advance by using the cap stand block having the above structure and can reduce concrete casting in situ as much as possible.

[0016]

[Means for Solving the Problems]

 SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has a U-shape, an opening is provided at the top, and a protruding bottom is provided on one side of the bottom so as to match the shape of the recess of the steel sheet pile, and the side wall is provided. A technical means called a concrete cap block is characterized in that a bolt insertion hole is provided, and the sheet pile is pressed against the protruding bottom of the cap block by a bolt to prevent leakage when pouring fresh raw material. Adopted.

[0017]

[Action]

 As a result of adopting the above technical means, the present invention is such that the concealed U-shaped concrete cap placing blocks having a protruding bottom at the bottom are sequentially arranged side by side with the projecting bottom facing downward, Since it can be fixed to the sheet pile, it is not necessary to process or assemble the formwork for casting concrete in-situ, and it is possible to drastically reduce the amount of concrete cast in place. Moreover, since it has a protruding bottom, it is possible to enhance strength and stability.

[0018]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, one embodiment of a method for constructing a steel sheet pile wall by a concrete cap block will be described with reference to FIGS.

A steel sheet pile and a concrete cap stand block according to one embodiment of the present invention will be described. As can be understood from FIGS. 3 to 5, the concrete cap stand block of the present invention has an inverted U-shape, has an opening 16 at the top, and conforms to the shape of the recess of the steel sheet pile 1 at one side of the bottom. The protruding bottom 14 is provided so as to do so. Since the concrete cap stand blocks are supplied by factory production, the quality is stable, the site work is greatly reduced, the materials required for installation are reduced, and it is economical and quick. It enables the construction work. It is more advantageous to increase the wall thickness of the concrete shade block in order to reduce the amount of cast-in-place concrete.

The revetment method using the concrete cap stand block of the present invention will be described below with reference to FIGS. 1 and 2. First, similarly to the conventional method, a water thread is stretched to a predetermined height, and the block bottom receiving metal fitting 21 is welded to the steel sheet pile 1 in accordance with the water thread.

Positioning metal fittings 18 are installed on the upper end of the steel sheet pile 1 on the water channel side so as to determine the distance from the concrete shed block 15 to be covered. Next, the concrete shade placing block 15 having the protruding bottom 14 at the bottom is placed on the receiving metal fitting 21 and pulled toward the shore until it hits the positioning metal fitting 18.

The back side (shore side) of the steel sheet pile 1 is backfilled to the height of the block bottom receiving metal fitting 21 to be filled with pressure, and oil paper 23 is laid on the upper portion of the receiving metal fitting 21 and then projected, as in the conventional method. If the concrete U-shaped concrete capping block 15 having the bottom 14 is lifted by a truck crane or the like and lowered from above the steel sheet pile 1 so as to cover the steel sheet pile 1, the concrete side of the concrete capping block 15 has a waterway side. It will be placed on the metal fitting 21, and the shore will be placed on the filled soil and the metal fitting 21. Next, the positioning metal fitting 18 is provided on the shore-side protruding portion of the steel sheet pile 1 to finely adjust and fix the interval, and the bolt hole 24 provided on the shore-side side surface of the capping block 15 is provided with the bolt 19 to support the capping The distance between the block 15 and the steel sheet pile 1 is finely adjusted and fixed.

Next, raw concrete is poured through the opening 16 in the upper part of the inverted U-shaped concrete cap placing block 15 and is driven until it becomes horizontal with the upper part of the opening 16. The opening 16 at the top of the shade block 15 may be rectangular or circular.

Especially, by using the concrete cap stand block of the present invention, the special and expensive separate bolt 10 is not required, and the front plate member 4 and the rear plate member 5 are not assembled and the concrete formwork is removed. Since there is no work, it is particularly effective when the construction is rushed during the dry season.

[0025]

[Effect of device]

 As a result of adopting the above configuration, the present invention can obtain the following effects. (1) In-situ casting with concrete is extremely reduced. (2) Since the curing of concrete is unnecessary, the construction period can be shortened. (3) Since a protruding bottom is formed on the bottom of the concrete shade block, the strength and safety can be improved. (4) Bolt insertion holes were provided on the side wall of the concrete cap block, and the sheet pile was pressed against the protruding bottom of the cap block by the bolts to prevent leakage during injection of ready-mixed concrete.

[Brief description of drawings]

FIG. 1 is an explanatory side view of a construction method in which a positioning bracket is provided on both sides of a waterway side and a shore side by a concrete shade block which is an embodiment of the present invention.

FIG. 2 is an explanatory plan view of a construction method using a concrete shade block which is one embodiment of the present invention.

FIG. 3 is an explanatory side view of a concrete shade block in the embodiment.

FIG. 4 is an explanatory plan view of the concrete shade block in the embodiment.

FIG. 5 is an explanatory bottom view of the concrete shade block in the embodiment.

FIG. 6 is an explanatory vertical cross-sectional view of a conventional casting method in a conventional example.

[Explanation of symbols] 1 ... steel sheet pile 2 ... wooden timber 3 ... bottom plate 4 ... front plate 5 ... rear plate 6 ... rear square plate retaining pin 7 ... bottom plate retaining pin 8 ... front square member Stopping pin 9 ... Chamfering material 10 ... Separate bolt 11 ... Constricted part 12 ... Disc nut 13 ... Corner nut 14 ... Projecting bottom 15 ... Kasaya block 16 ... Opening 17 ... Bolt hole 18 ... Positioning bracket 19 Bolt 20 Packing material 21 Receiving bracket 23 Oil paper 24 Bolt hole

Claims (2)

[Scope of utility model registration request] 1. A concrete cap stand block having a U-shape, having an opening at the top, and having a protruding bottom provided on one side of the bottom so as to match the shape of the recess of the steel sheet pile. 2. The concrete capping block according to claim 1, wherein a bolt insertion hole is provided in a side wall of the concrete capting block, and the sheet pile is pressed by a bolt against a protruding bottom of the capping block.