JPH0711136B2 - Water structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water area structure used as a revetment structure, a breakwater, or the like in a harbor, a river, or the like.

[Conventional technology]

BACKGROUND ART Conventionally, as a water area structure, a self-standing sheet pile wall or a tie rod type sheet pile wall composed of a sheet pile wall connected to an anchor member via a tie rod is known.

On the other hand, as disclosed in Japanese Patent Publication No. 58-54203, a large number of connecting vertical pipes having fitting joints on both sides and inclined pipes having fitting joints on both sides. Welded through the members to form a steel jacket,
In addition, a large number of jackets are arranged in parallel in a standing manner on the subseabed ground, and the jackets are fixed by piles inserted into the vertical pipe body and the inclined pipe body and driven into the subseabed ground, and the adjacent jackets are fitted together. A jacket type water body structure in which a steel pipe sheet pile is inserted between vertical pipe bodies with joints and between inclined pipe bodies with fitting joints and the steel pipe sheet piles are driven into the water bottom ground is also known.

[Problems to be Solved by the Invention]

In the case of the self-supporting sheet pile wall and the tie rod type sheet pile wall, the external force acting on the sheet pile wall increases dramatically with the deepening of the water in the construction site of the water area structure, and thus the cross section of the steel sheet pile forming the sheet pile wall is large. Tend to change.

However, the size of the cross section of the steel sheet pile is limited in terms of manufacturing, and the use of a large cross section steel sheet pile not only increases the construction cost but also requires a large steel sheet pile driver and a work boat. Therefore, the equipment cost is also high.

Also, in the case of a jacket-type water area structure, a large and expensive jacket structure is required, as well as a large number of piles and steel pipe sheet piles, which increases the construction cost and the construction period, and the adjacent jackets. Since there is a gap between the lower portion of the steel pipe sheet pile inserted and placed between the inclined pipe bodies with the fitting joint and the lower portion of the pile inserted and placed in the inclined pipe body, the gap The soil behind may be extruded from there, which may destroy the seawall.

It is an object of the present invention to provide a water area structure that can be constructed with a stable water area structure at low cost and in a short construction period by using an ordinary sheet pile.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, in the water area structure of the present invention, the receiving metal fittings 10 are fixed by welding at predetermined positions in the longitudinal direction of the steel sheet pile 1 at intervals in the left-right direction, and the piles of the connecting member main body 11 are provided. The steel cylinder 12 is connected to one end on the 4 side, and the base ends of the arms 16 are fixed to the left and right sides of the other end of the connecting member body 11 on the steel sheet pile 1 side, and the tip of the arm 16 is fixed. To
An insertion member 17 that engages with the receiving metal fitting 10 is fixed, a time-curable filling material 20 is filled in a space between the pile 4 and the steel cylinder 12, and the steel sheet pile 1, the arm 16 and the connection. The time-curable filler 20 is provided in the void formed by the other end of the member body 11.
Is filled.

[Action]

Since the superstructure and the underwater connecting member 6 serve as a fulcrum with respect to the sheet pile wall 3 on the soil stop side, the bending moment generated in the sheet pile wall 3 is reduced, and the external force acting on the sheet pile wall 3 is the same as that of the superstructure. Since the water is transmitted to the piles 4 driven on the water bottom ground 5 in front of the sheet pile wall 3 through the underwater connecting member 6 located below, the displacement of the sheet pile wall 3 is smaller than that in the case of only the sheet pile wall.

〔Example〕

 The present invention will now be described in detail with reference to the illustrated example.

FIG. 5 and FIG. 6 show a steel sheet pile with a bracket used in an embodiment of the present invention, in which a longitudinal direction of a steel sheet pile 1 made of a steel pipe sheet pile having fitting joints 8 and 9 on both left and right sides. On the front surface of the intermediate portion in the direction, a pair of receiving fittings 10 made of a vertical pipe having a slit extending in the vertical direction are fixed by welding at intervals in the horizontal direction.

7 to 9 show an underwater connecting member 6 with a sealing material used in an embodiment of the present invention, in which one end of a horizontal connecting member main body 11 made of a square steel pipe is
A pair of brackets 13 fixed to the steel cylinder 12 are connected by horizontal bolts 14, and a rubber annular seal material 15 is fixed to the lower part inside the cylinder 12 with an adhesive or the like, and the connecting member main body 11 The base ends of the vertical arms 16 are fixed to the left and right sides of the other end of the, and an insertion member 17 made of a vertical small-diameter steel pipe is fixed to the distal ends of the arms 16 by welding. A base end portion of the rubber lower seal member 18 located between the members 17 is fixed to a lower portion of the other end portion of the connecting member body 11 with an adhesive or the like, and further to the base end portions on the left and right sides of the arm 16. The base end of a rubber side seal member 19 extending to the side of the insertion member 17 is fixed by welding or the like.

1 to 4 show a first embodiment of the present invention, which is a steel sheet pile 1 made of a steel pipe sheet pile having a receiving metal fitting 10 and a steel sheet pile made of a steel pipe sheet pile having no receiving metal fitting. 2 and 2 are alternately arranged and driven into the ground in a state of being meshed with each other to form the sheet pile wall 3, and the receiving metal fitting 10 in the steel sheet pile 1 is at a slightly higher level than the water bottom ground 5. Alternatively, a pile 4 which is arranged so as to be in contact with the ground surface of the water bottom and is made of a steel pipe pile in front of each of the steel sheet piles 1, that is, offshore.
Are arranged, the intervals between the steel sheet piles 1 and the piles 4 are set to be equal, and the lower portions of the piles 4 are cast on the water bottom ground 5.

The tubular body 12 and the annular seal 15 in the underwater connecting member 6 with the sealing material shown in FIGS. 7 to 9 are fitted into the pile 4 from above, and a pair of inserting members in the underwater connecting member 6 are provided.
17 is inserted from above into a pair of receiving metal fittings 10 in the steel sheet pile 1, and the connecting member main body 11 in the underwater connecting member 6 is arranged at a level slightly higher than the upper surface of the water bottom ground 5, and the pile 4 and the tubular body A time-curable filler 20, such as mortar or concrete, is filled between the underwater connecting member 6 and the end of the underwater connecting member 6 and the steel sheet pile 1 with a metal fitting, and the upper end of the sheet pile wall 3 and the pile 4 are filled. A superstructure 7 consisting of a concrete slab is erected and fixed to the upper end, and earth and sand 21 are attached to the back of the sheet pile wall 3.
Is filled.

FIG. 10 shows a second embodiment of the present invention, in which the steel sheet pile 1 with the receiving metal fitting in the sheet pile wall 3 and the pile 4 are connected through the horizontal two-stage underwater connecting member 6. However, other configurations are similar to those of the first embodiment.

FIG. 11 shows a third embodiment of the present invention, in which a steel sheet pile 1 with a receiving metal fitting in a sheet pile wall 3 and a pile 4 are a horizontal lower stage underwater coupling member 6A and an inclined upper stage underwater coupling member.
Although connected via 6B, other configurations are the same as in the case of the first embodiment.

When carrying out the present invention, any steel sheet pile other than the steel pipe sheet pile may be used as the steel sheet pile. Furthermore, as shown in FIGS. 12 and 13, the tubular body 12 may be fixed to one end of the connecting member body 11 by welding or the like.

[Effects of the Invention] Since the present invention is configured as described above, it has the effects described below.

Since the superstructure and the underwater connecting member 6 play a role of a fulcrum with respect to the sheet pile wall 3 on the soil stop side, the bending moment generated in the sheet pile wall 3 can be remarkably reduced, and therefore, the steel sheet pile used for the sheet pile wall 3 Since the cross section of the sheet pile is small, the construction cost can be reduced, and the external force acting on the sheet pile wall 3 strikes the water bottom ground 5 in front of the sheet pile wall 3 through the superstructure and the underwater connecting member 6 therebelow. Since it is transmitted to the piles 4 installed, the displacement of the sheet pile wall 3 can be significantly reduced compared to the case where only the sheet pile wall is used, and the weight of the steel material to be used is not only small, but also the manufacturing cost is reduced. It is extremely economical because it does not use a high jacket structure, and after the normal piling construction of the sheet pile wall 3 and the pile 4, the sheet pile wall 3 is installed.
Since it is only necessary to connect the pile 4 and the pile 4 via the underwater connecting member 6, the construction is simple and the construction can be performed with high efficiency as compared with the jacket type steel revetment structure. Furthermore, since the steel sheet piles are meshed with each other to form the continuous soil stop side sheet pile wall 3, there is no risk of soil coming out of the sheet pile wall 3 and safety is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 4 show a water area structure according to a first embodiment of the present invention, wherein FIG. 1 is a vertical sectional side view, and FIG.
The drawing is a cross-sectional view taken along the line AA of FIG. 1, FIG. 3 is a partially cutaway vertical side view showing a part of the water body structure in an enlarged scale, and FIG. 4 is a cross-sectional view taken along the line BB of FIG. is there. FIG. 5 is a partially cutaway front view of a steel sheet pile with a bracket used in an embodiment of the present invention,
6 is an enlarged sectional view taken along the line CC of FIG. 5, FIG. 7 is a plan view of an underwater connecting member used in the embodiment of the present invention,
FIG. 8 is a partially longitudinal side view thereof, and FIG. 9 is DD of FIG.
It is a line sectional view. FIG. 10 is a vertical sectional side view showing a water body structure according to a second embodiment of the present invention, FIG. 11 is a vertical sectional side view showing a water body structure according to a third embodiment of the present invention, and FIG. 12 is an underwater connection. FIG. 13 is a partially longitudinal side view showing a part of another example of the member, and FIG. 13 is a plan view thereof. In the figure, 1 and 2 are steel sheet piles, 3 are sheet pile walls, 4 are piles, 5 are submerged grounds, 6 are underwater connecting members, 7 is superstructure, 8
And 9 are mating joints, 10 is a receiving metal fitting, 11 is a connector main body, 12
Is a metal fitting, 14 is a bolt, 15 is a rubber annular seal material, 17 is an insertion member, 18 is a rubber lower seal material, 19 is a rubber side seal material, and 20 is a time-curable filler.

Claims (1)

[Claims] 1. A bracket is provided at a predetermined position in the longitudinal direction of the steel sheet pile 1.
10 are fixed by welding at intervals in the left-right direction, the steel cylinder 12 is connected to one end of the connecting member body 11 on the pile 4 side,
A base end of an arm 16 is fixed to both left and right sides of the other end of the connecting member body 11 on the steel sheet pile 1 side, and an inserting member 17 that engages with the receiving metal fitting 10 is provided at a tip end of the arm 16. Fixed,
The space between the pile 4 and the steel cylinder 12 is filled with the time-curable filling material 20, and the space formed by the steel sheet pile 1, the arm 16 and the other end of the connecting member body 11 is stored in the space. An aquatic structure filled with a curable filler 20.