JP2002061168A - Breakwater for sheet pile wall and its construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a breakwater for a sheet pile wall easy to construct and withdraw, and its construction method. SOLUTION: The breakwater 1 for the sheet pile wall comprises a rising part 2 having a rising wall for preventing the entry of waves and a base part 4 for supporting the rising part 2 on the head of the steel sheet pile wall 3. The base part 4 has a tap cut-off portion 5 of an elastic material adapted to be internally fitted to a hollow portion 3a at the upper end of one steel sheet pile and detachably and firmly fixed thereto and a latch portion 6 adapted to contact the steel sheet pile at its upper end of along the outer periphery thereof. By using the latch portion 6 to latch the wave-proof wall 1 to the upper end of the sheet pile wall and operating the cut-off portion 5 for fixation with the cut-off of water, the wave-proof wall for the sheet pile wall is constructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet pile breakwater wall provided above a temporary wall made of steel sheet piles for repairing bridge piers (for example, seismic retrofitting work), and particularly to a method of constructing the same. The present invention relates to a sheet wall for a sheet pile wall, which can be easily constructed and removed, and a method of constructing the same.

[0002]

2. Description of the Related Art FIG. 10 is a longitudinal sectional view showing a conventional steel pipe sheet pile wall and its breakwater wall. Bridge pier 101 for work such as repair
When the steel pipe sheet pile wall 102 is cast around the work, the upper obstacle of the bridge sheet beam 103 and the girder support 104 is restricted by the upper obstacle.
If there is a risk of receiving high waves from a marine pier or the like because it must be formed low nearby, in order to prevent the intrusion, conventionally, a sheet pile wall 102 is cast and a similar short sheet pile is placed on the upper end thereof. By further welding and adding 105, a wave barrier was formed between the upper end of the sheet pile wall and the girder support.

[0003]

However, since the sheet pile 105 to be replenished cannot be hung due to an upper obstacle, it is necessary to separately provide a holding means at the time of welding.
In addition, since continuous welding is required for waterproofing, a large welding load is involved, and furthermore, when removing the sheet pile wall 102 after the completion of the construction, it is necessary to first cut the gas barrier wall 105 and remove it. There was a heavy burden in terms of construction period and cost.

[0004] It is an object of the present invention to provide a breakwater wall for a sheet pile wall, which can be easily constructed and removed, and a method of constructing the same.

[0005]

In order to solve the above-mentioned problems, an upright portion for forming an upright wall for preventing invasion of waves is provided,
In a sheet pile wall breaking wall comprising a base part supporting the upright part on the head of the steel sheet pile wall, the base part is fitted in a hollow part at the upper end of one steel sheet pile and fixed detachably and closely. A sheet pile wall comprising a plug-shaped water-stop portion made of a resilient material or a filling-type elastic bag that can be expanded and expanded by internal pressure, and a hook portion that can contact the upper end of the steel pipe sheet pile along the outer periphery thereof. Construct a breakwater wall.

The sheet pile wall is supported on the upper end of the steel pipe by a seat-shaped hook, and can be detachably adhered and fixed to the upper end of the steel pipe by a plug-shaped water-stop portion made of an elastic material. Therefore, it is possible to form a detachable wave-preventing wall. In particular, if an elastic bag is applied, when air is supplied to the elastic bag, it can be tightly fixed to the steel pipe head by expanding the diameter of the water blocking portion. Further, since a water-proof wall that can be detached by reducing the diameter of the exhaust gas and can be easily attached and detached by pneumatic force can be configured, both detachability and water-stopping fixability can be satisfied.

The upright portion is constituted by a filling-type elastic bag which can be expanded and expanded beyond the diameter of the steel pipe by internal pressure, so that when the elastic bag of the upright portion is expanded and expanded, it is densely provided with an adjacent portion, It can prevent inundation when receiving waves. The upright portion is formed in a range extending above at least one of the steel pipe sheet piles adjacent to at least one of the steel pipe sheet piles, and is provided with a plurality of the base portions that support the sheet pile. Further, in a sheet pile wall breaking wall comprising an upright portion forming an upright wall for preventing the invasion of waves and a base portion supporting the upright portion on the head of a U-shaped steel sheet pile wall, the base portion is made of steel. A parallel part parallel to the surface of the sheet pile wall, a locking part for parallel locking the parallel part at a fixed distance side of the U-type steel sheet pile, and closing between the parallel part and the U-type steel sheet pile With the provision of the water stop portion made of the elastic material, the upright wall with the water stop portion can be detachably formed at the upper end of the U-shaped steel sheet pile wall. In addition, the breaking wall is hung on the upper end of the sheet pile wall by the hanging portion of the sheet pile wall breaking wall,
By the method of constructing a sheet wall for a sheet pile wall comprising the procedure of applying the water stopping portion to fix the water, the sheet wall for a sheet pile wall can be detachably and simply constructed. In addition, the following means can be applied. The elastic bag of the upright portion communicates with the elastic bag of the mounting portion, so that the step of fixing to the steel pipe head and the step of inflating and forming the upright portion can be processed by a single air supply operation. Removal is the same. The elastic bag of the upright portion is formed of a single bag of a rubber-like elastic film, and is provided with a supply / discharge port for adjusting the internal pressure, so that the filling / discharging operation of the upright portion can be performed independently from the adjacent portion. , Which can be opened and closed. The water stopping portion is formed by a filling type elastic bag body which can be expanded and expanded by the internal pressure, and has a water supply / discharge port for adjusting the internal pressure, so that the water stopping portion can be attached and detached by adjusting the air supply while securing the water stopping fixation. Becomes easier. The water stop portion is provided with a turnbuckle as a contact adjusting means for adjusting the gap between the parallel portion and the U-shaped steel sheet pile on the upright portion, whereby the water stop fixation is secured by the contact adjustment, Moreover, attachment and detachment become easy.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a configuration example of a minimum unit of a breakwater wall for a steel pipe sheet pile wall of the present invention. The wave-break wall 1, which is the minimum unit, includes an upright portion 2 for forming an upright wall for preventing the penetration of waves, and a base portion 4 for supporting the upright portion 2 on the head of the steel pipe sheet pile wall 3. A plug-shaped water-stop portion 5 made of an elastic material which can be fitted in the hollow portion 3a at the upper end of one steel pipe sheet pile so as to be detachably adhered and fixed;
A hook portion comprising a ring-shaped seating surface 6 that can contact the upper end surface 3b of the steel pipe sheet pile along the outer periphery thereof, and a handle 7 at the top.
Is provided.

The upright portion 2 is formed of a rubber-like elastic film into a filling type elastic bag so as to be able to expand up and down by internal pressure and expand and expand beyond the diameter of the steel pipe. Is also formed by a filling type elastic bag body which can be expanded and expanded by the internal pressure, communicates with the elastic bag body of the upright portion 2, and has a supply / discharge port 5b which can be connected to an air supply hose 5a for adjusting the internal pressure. Is provided.

FIG. 2 is a perspective view when the break wall of FIG. 1 is mounted. In the breakwater wall 1 having the above-described configuration, when the water stop portion 5 and the upright portion 2 are expanded by fitting the water stop portion 5 at the upper end of each steel pipe of the sheet pile wall 3 and supporting it with the seat surface 6 and supplying air. The upright portions 2 can be closely connected to each other to form an integrated upright wall.

At this time, the breakwater wall 1 is supported on the upper end of the steel pipe by the seating surface 6 and can be detachably adhered and fixed to the upper end of the steel pipe by the plug-shaped water blocking part 5 made of an elastic material. In addition, by inflating and expanding the elastic bag body of the upright portion 2 beyond the diameter of the steel pipe, it is possible to prevent infiltration between adjacent members. If the exhaust diameter is reduced, it can be easily removed. Therefore, the step of fixing the upper and lower bags to the steel pipe head by communicating the upper and lower bags and the step of expanding and forming the upright portion 2 can be processed by a single air supply operation. The breakwater can be easily attached and detached by force.

FIG. 3 is a plan view showing an example in which the block type break wall is formed in a circular shape, and FIG. 4 is a perspective view showing an example in which the block type break wall is formed in series. In the following, description of the same members will be omitted by giving the same reference numerals. The block-type breakwater wall 11 comprises a connecting base 12 in which a plurality of base parts to be adjacent to each other are connected by a flexible material, and an integral standing part 13 on the connecting base 12, and connecting fasteners 14 at both ends. , 14 are provided. The above connection base 12
The water stop section is appropriately selected and configured according to the use conditions.
Since the block-type breakwater wall 11 can collectively process the supply and discharge operations, by connecting the block-type breakwater wall 11, an arc wall or a series wall that can be attached and detached efficiently and collectively can be configured.

FIG. 5 is a front view showing an application example of the breakwater wall of the present invention. When the breakwater wall 21 is formed by including the above-described minimum unit of the breakwater wall 1 in at least one place, the upright part 2 of the minimum unit of the breakwater wall 1 is expanded and contracted by the air supply / exhaust operation, whereby The area extending from the upper end of the perforated steel sheet pile wall 3 to the girder support 22 is closed by the breakwater wall 21 to reliably prevent the intrusion of waves and to secure the entrance of workers and materials as necessary. it can.

FIG. 6 is a front view showing an example in which another type of upright wall is constituted by the breakwater wall of the present invention. The breakwater wall 31 is provided on the connection base 12 provided with the plurality of water stopping portions 5.
2 is attached. The barrier member 32 is provided with fasteners 33 at both ends thereof so as to be connectable to an adjacent part. In this case, as the barrier member 32, an appropriate wave preventing wall material such as a metal plate can be selected.

FIG. 7 is a plan view of a break wall for a U-shaped steel sheet pile wall,
FIG. 8 is a sectional view taken along line AA of FIG. The breakwater wall 41 includes an upright portion 42 that forms an upright wall for preventing the invasion of waves, a hook portion 44 that supports a lower portion 42a of the lower portion 42a on the head of the U-shaped steel sheet pile wall 43, and a lower portion 42a of the upright portion 42. And a water shut-off portion 45 made of an elastic material for closing between the U-shaped steel sheet piles 43. Also,
Turnbuckle 46 as a contact adjusting means of water stopping part 45
Is installed between the upper portion of the upright portion 42 and the upper end of the steel sheet pile wall 43.

The upright portion 42, including its lower portion 42a, is formed in a shape parallel to the surface of the steel sheet pile wall 43, and the lower portion 42a of the upright portion 42 is fixed as a parallel portion parallel to the side of the U-shaped steel sheet pile 43. It is hooked by the hook 44 at a distance.

The water stopping portion 45 is provided with a supply / discharge port (not shown) for adjusting the internal pressure, and is constituted by a filling-type elastic bag which can be expanded and expanded by the internal pressure, thereby securing the water stopping and fixing properties. The detachability can be ensured by adjusting the air supply. The turnbuckle 46 can adjust the gap between the lower portion 42a of the upright portion 42 and the U-shaped steel sheet pile by inclining the upright portion 42 in a minute angle range by the shortening operation, so that the turnbuckle 46 functions as contact adjustment means, It is possible to increase the water stopping performance of the water stopping portion 45 and obtain a strong fixing force.

FIG. 9 is a view similar to FIG. 8 showing an example of the structure of another contact adjusting means. The upper part of the upright part 42 and the steel sheet pile wall 43
Turnbuckle 4 acting in the direction of tension between the upper ends of
The abutment adjusting means is constituted by erection of 7. When the turnbuckle 47 is extended, the upright portion 42 is extended.
Can be inclined in a minute angle range, so that the gap between the lower portion 42a of the upright portion 42 and the U-shaped steel sheet pile 43 can be adjusted as described above.

As described in detail above, the break wall for sheet pile wall according to the present invention is configured such that the main body of the wave break wall is hung on the upper end of the sheet pile by the hook portion, and the water stop portion is actuated to prevent the upper wall from being damaged. Without being restricted by the above, it is possible to secure the water-stopping fixability and to easily construct a detachable structure.

[0020]

The breakwater for sheet pile wall of the present invention has the following effects. The breakwater for sheet pile wall is supported on the upper end of the steel pipe by a seat-shaped hook, and can be detachably adhered and fixed to the upper end of the steel pipe by a plug-shaped water-stop portion made of an elastic material. In addition, an upright wall with a water stopping portion can be detachably formed at the upper end of the U-shaped steel sheet pile. Therefore, the breakwater can be detachably constructed without being restricted by the upper obstacle.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration example of a minimum unit of a breakwater wall for a steel pipe sheet pile wall of the present invention.

FIG. 2 is a perspective view when the breakwater wall of FIG. 1 is mounted.

FIG. 3 is a plan view showing an example in which a block type breakwater wall is configured in a circular shape.

FIG. 4 is a perspective view showing an example in which block-type breakwaters are arranged in series.

FIG. 5 is a front view showing an application example of the breakwater wall of the present invention.

FIG. 6 is a front view showing an example in which another type of upright wall is constituted by the breakwater wall of the present invention.

FIG. 7 is a plan view of a breakwater wall for a U-type steel sheet pile wall.

8 is a sectional view taken along line AA of FIG. 7;

FIG. 9 is a view similar to FIG. 8, showing a configuration example of another contact adjusting means.

FIG. 10 is a longitudinal sectional view showing a conventional steel pipe sheet pile wall and its breakwater wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wave prevention wall 2 Standing part (elastic bag) 3 Steel pipe sheet pile wall 3a Hollow part 3b Upper end surface 4 Base part 5 Waterproof part (elastic bag) 6 Ring-shaped seating surface (hook part) 11 Block type waveproof wall DESCRIPTION OF SYMBOLS 12 Connecting base 13 Standing part (elastic bag) 21 Wave prevention wall (gateway) 31 Wave prevention wall 32 Barrier member (standing part) 41 Wave prevention wall 42 Standing part 42a Lower part of standing part (parallel part) 43 U-shaped steel sheet pile wall 44 Hanging part 45 Water stopping part 46, 47 Turnbuckle (contact adjustment means)

Claims (5)

[Claims] An upright portion for forming an upright wall for preventing intrusion of waves, and a base portion for supporting the upright portion on a head portion of a steel sheet pile wall, wherein the base portion is A plug-shaped water-stop portion made of an elastic material which can be fitted in a hollow portion at the upper end of a single steel pipe sheet pile and which can be detachably adhered and fixed, or a filled-type elastic bag which can be expanded and expanded by an internal pressure. A seam wall for sheet pile wall, comprising a hook portion that can contact the upper end of the steel pipe sheet pile along the same. 2. The breakwater wall for sheet pile wall according to claim 1, wherein the upright portion is formed by a filling type elastic bag body which can expand and expand beyond the diameter of the steel pipe by internal pressure. 3. The sheet pile according to claim 1, wherein the upright portion is formed in a range extending above at least one of the steel pipe sheet piles, and includes a plurality of the base portions that support the sheet pile. Breakwater for walls. 4. A sheet pile wall breaking wall comprising an upright portion forming an upright wall for preventing invasion of waves and a base portion supporting the upright portion on the head of a U-shaped sheet pile wall. Is a parallel part parallel to the surface of the steel sheet pile wall, a locking part for parallel locking this parallel part at a fixed distance side of the U-type steel sheet pile, and a parallel part and a U-type steel sheet pile. A breakwater wall for a sheet pile wall, comprising: a water-blocking portion made of an elastic material for closing the gap. 5. A water-stopping fixation of the sheet pile wall according to claim 1 or 4, wherein the sheet wall is hooked on the upper end of the sheet pile wall by the hooking portion of the sheet wall wall. Method of building a breakwater for sheet pile wall.