JP3984537B2 - Aquatic structure with water chamber - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a water body structure having a recreational water chamber provided in a water area such as a harbor or a fishing port.
[0002]
[Prior art]
Conventionally, a pile-type pier structure as shown in FIG. 34 of Patent Document 1 (Japanese Patent Application Laid-Open No. 8-35219) is widely known as a water structure provided in a water area such as a harbor. This pile-type pier structure according to this prior art is constructed by placing steel pipe piles at intervals of about 5 m in the normal direction (structure extension direction) and in the cross-sectional direction, and the heads of these steel pipe piles are mutually connected by reinforced concrete beams. The floor slab is arranged between the beams.
[0003]
In the case of the conventional pile-type pier structure, there were the following problems from the aspect of reflected wave countermeasures.
(1) Since the installation interval of piles in the normal direction (structure extension direction) is as wide as about 5 m, there is almost no energy loss that leads to reduced reflected wave height when the wave passes through this part.
(2) Since a large lifting pressure acts on the pile-type pier structure due to waves incident between the piles, a large pulling force is generated in the pile. Therefore, in order to ensure the stability of the structure, it is necessary to increase the length of the pile, increase the diameter of the cross section of the pile, increase the number of piles, etc., leading to higher cost and longer construction period. There was a case.
(3) In addition, in order to cope with a large lifting pressure, it is necessary to increase the cross-section of the beam member and floor slab member in the superstructure, which may increase the cost and prolong the construction period.
[0004]
On the other hand, the applicant of the present invention has already disclosed a water body structure having a water reserving chamber in which the above-mentioned problem (1) is noted in Patent Document 1. However, it can be said that the aquatic structure having the water reserving room still has room for improvement in terms of improvement of the wave-dissipating efficiency and simplification of the structure.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-35219 FIG. 1 and FIG.
[0006]
[Problems to be solved by the invention]
The present invention was made to eliminate the disadvantages of the prior art described above, and its purpose is to reduce the reflected wave height of waves incident from between the piles, and to reduce the lifting pressure acting on the structure, thereby reducing the structure. It is to realize stability and simplification of structure.
[0007]
[Means for Solving the Problems]
(1) In the first invention, a plurality of upper transmission wall body constituent members having joints continuously in a member longitudinal direction from a predetermined position below the ground surface of the water bottom ground to a predetermined position below the water surface, An upper transmission wall body having a water passage slit on the upper side is configured by being placed on the water bottom ground by means such as casting or non-casting in the fitted state, and the upper transmission wall body constituting member The head is connected to the structure extension direction connecting material A, and the rear wall constituting member is disposed on the water bottom ground by means such as placing or not placing at a position away from the upper transmission wall by a predetermined distance. A rear wall is configured, and a head of the rear wall member is connected to a structure extension direction connecting member B, and the structure extension direction connecting member A and the structure extension direction connecting member B are in a cross-sectional direction. Connected by connecting material, the structure extension An upper coupling portion A2 is formed so as to include an intersection portion between the direction coupling material A and the cross-sectional direction coupling material, and an upper coupling portion is included so as to include an intersection portion between the structure extension direction coupling material B and the cross-sectional direction coupling material. A portion B2 is formed, a water reserving chamber is formed between the upper permeation wall body and the rear wall body, and a filling material is disposed between the upper permeation wall body and the rear wall body, A layer is formed, and a sheath tube is extrapolated to a non-joint portion at an upper portion of a joint of the predetermined upper transmission wall member, thereby forming an upper transmission wall member with a sheath tube. The upper end of the diagonal member is connected to the upper joint B, and the space between the sheath tube and the non-joint part of the upper transmission wall member is made of a time-curable material. The water structure is characterized in that a rating is formed by filling.
(2) In the second invention, in the first invention, the upper transmission wall body is composed of an upper transmission wall body constituent member and wall axial constituent members for supporting an axial load of members arranged at intervals of several. In addition, the member axial load supporting wall constituting member is the upper transmission wall constituting member with a sheath tube, and a lower end portion thereof reaches the supporting ground.
(3) In a third aspect based on the first or second aspect, the rear wall body includes a rear wall body constituent member and a member axial direction load supporting wall body constituent member disposed every several. The member axial load supporting wall constituting member is arranged at a position facing the upper transmission wall constituting member with a sheath tube, and its lower end portion reaches the supporting ground. To do.
(4) The fourth invention is characterized in that, in the first to third inventions, a wave-dissipating projecting body is provided on a side surface of the diagonal member.
(5) The fifth invention is characterized in that, in the first to fourth inventions, the surface of the lower layer of the water reserving chamber has an arbitrary shape by a horizontal plane or a slope, or a combination of a horizontal plane and a slope.
(6) The sixth invention is characterized in that, in the fifth invention, a surface protective layer is formed on the surface of the lower layer of the water reserving chamber.
(7) The seventh invention is characterized in that, in the first to sixth inventions, the cross-sectional connecting material is made of reinforced concrete or steel reinforced concrete.
(8) An eighth invention is characterized in that, in the first to sixth inventions, the cross-section direction connecting member is a corrosion-resistant or non-corrosive shaped steel or a steel pipe steel tube.
(9) A ninth invention is characterized in that, in the first to eighth inventions, a backing material is disposed to a height as appropriate behind the rear wall.
(10) In a tenth aspect based on the first to ninth aspects, the rear wall body constituting member is a joint continuously in the longitudinal direction of the member from at least a predetermined position below the ground surface of the water bottom to a predetermined position below the water surface. The rear transmission wall member is provided as an upper transmission wall body having a water passage slit on the upper side.
(11) In an eleventh aspect based on the first to tenth aspects, the upper transmission wall member and the rear wall member are steel pipe sheet piles.
(12) In a twelfth aspect based on the first to ninth aspects, the rear wall constituting member is a steel sheet pile.
(13) In a thirteenth invention according to the first and fourth to twelfth inventions, the upper transmission wall member and the rear wall member are made of a time-curable material such as concrete in which the bottom wall member is disposed on the water bottom ground. It is supported by the lower part support body.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an aquatic structure having a water reservoir according to the first embodiment of the present invention will be described with reference to FIGS. The water body structure 1 according to the first embodiment includes an upper transmission wall body 2 constructed on the left side in the figure, and a rear wall body constructed at a predetermined interval behind the upper transmission wall body 2 (right side in the figure). 3 is connected by an upper work 4. Further, a water reserving chamber 5 is formed between the upper transmission wall 2 and the rear wall 3.
[0009]
The upper transmission wall body 2 of the first embodiment is configured by interconnecting a plurality of upper transmission wall body constituting members 7 that are placed in the bottom bottom ground 6 along the structure extending direction. Each upper transmission wall member 7 is a steel pipe sheet pile in which joints are formed on the left and right, and the joint of the upper transmission wall member 7 is, for example, as shown in FIG. It is comprised from the female joint 9 of the steel pipe with a fitting groove | channel.
[0010]
Further, the joint of each upper transmission wall member 7 is at least from a predetermined position below the ground surface of the water bottom ground 6 to a predetermined position below the water surface 10 in a state where the upper transmission wall member 7 is driven on the water bottom ground 6. It arrange | positions so that a member longitudinal direction may be followed. That is, in the upper transmission wall body 2, the joint meshes from a predetermined position below the ground surface of the water bottom ground 6 to a predetermined position below the water surface 10 to form a wall body, while on the upper side from a predetermined position below the water surface 10, A water passage slit 11 is formed between the upper transmission wall members. The upper end of the upper transmission wall 2 is coupled to the structure extension direction connecting member A (30) in the upper work 4.
[0011]
Here, in the example of FIG. 2, the water passage slits 11 are formed between all the upper transmission wall members 7, but may be provided at intervals for one or a plurality of joints. Further, the length of the water passage slit 11 in the member axial direction is not necessarily constant, and may be different among the respective upper transmission wall body constituting members 7. Furthermore, the slit 11 for water flow may be provided intermittently in the longitudinal direction [both are not shown].
[0012]
The rear wall body 3 of the first embodiment is configured by interconnecting a number of rear wall body structural members 12 that are placed on the water bottom ground 6 along the structure extension direction. The rear wall body constituting member 12 of the first embodiment is a steel pipe sheet pile in which joints are formed on the left and right in the same manner as the upper transmission wall body constituting member 7, and is near the upper end portion from a predetermined position below the ground surface of the water bottom ground 6. It differs from the upper transmission wall body structural member 7 in that the joint is formed continuously in the longitudinal direction of the member. That is, in the rear wall 3 of the first embodiment, the joint is engaged at least from a predetermined position below the ground surface of the bottom bottom ground 6 to form an impermeable wall. And the upper end part of the back wall 3 is couple | bonded with the structure extension direction connection material B (31) in the superstructure 4. As shown in FIG.
[0013]
The steel pipe sheet piles constituting the upper transmission wall body 2 and the rear wall body 3 are provided with several member axial direction load support wall body constituting members 14 whose length is set so that the lower end reaches the support ground 13. It is used for. Therefore, the upper transmission wall 2 and the rear wall 3 are stably supported by the member axial load supporting wall constituting member 14 that is placed up to the support ground 13.
[0014]
Further, the structure extension direction connecting member A and the structure extension direction connecting member B are connected by a cross-section connecting member 15 to form an upper work 4. In the first embodiment, the superstructure 4 is formed by the structure extension direction connection material A and the structure extension direction connection material B, and the cross-section direction connection material 15 made of reinforced concrete and integrated with the floor slab. An upper coupling portion A2 (16) is formed at the intersection between the structure extension direction connecting member A and the cross section direction connecting member 15, and above the intersection between the structure extension direction connecting member B and the cross section direction connecting member 15. A joint B2 (17) is formed.
[0015]
A filling material 18 such as earth and sand is filled between the upper transmission wall body 2 and the rear wall body 3 to a predetermined height, and an intermediate filling material is provided between the upper transmission wall body 2 and the rear wall body 3. A water reserving chamber 5 having a top surface of 18 as a bottom surface is formed. Seawater enters and exits the water reserving chamber 5 from the water passage slit 11 of the upper transmission wall 2. And since the energy loss generate | occur | produces in the wave which injects from the slit 11 for water flow of the water reserving room 5, and the wave reflected by the back wall 3, the reflected wave height can be reduced. Further, since the lifting pressure due to the incident wave is also reduced, the structure of the superstructure 4 can be simplified.
[0016]
Further, the ratio of the lower wall portion and the upper water passage slit 11 in the upper transmission wall body 2 is adjusted, and the width of the water reserving chamber 5 (the interval between the upper transmission wall body 2 and the rear wall body 3) is changed. Thus, the reflected wave reduction effect can be controlled. Further, by adjusting the length of the water passage slits 11 individually, finer control of the reflected wave reduction effect becomes possible.
[0017]
Furthermore, a surface protective layer 19 is provided on the bottom surface of the water reserving chamber 5 (the top surface of the filling material 18). In the first embodiment, the surface protective layer 19 is a horizontal plane, but may be an arbitrary shape such as a slope or a combination of a horizontal plane and a slope [not shown].
[0018]
Further, between the upper transmission wall body 2 and the rear wall body 3, diagonal members 20 extending obliquely downward from the rear wall body side toward the upper transmission wall body side are arranged at regular intervals, and the horizontal direction of the structure body The load-bearing performance and deformation performance are improved. The upper end portion of the diagonal member 20 is integrated with the upper coupling portion B <b> 2 (17), and the lower end portion of the diagonal member 20 is connected to the outer periphery of the sheath tube 21 that is extrapolated to the upper transmission wall body constituting member 7. .
[0019]
FIG. 6 is a view showing a joint portion between the sheath tube 21 and the upper transmission wall constituting member 7. On the outer peripheral surface of the upper transmission wall constituting member 7 corresponding to the sheath tube mounting portion and the inner peripheral surface of the sheath tube 21, a protrusion 22 for preventing slippage is fixed. And the sealing 23 is arrange | positioned in the bottom face part of the sheath pipe | tube 21 so that the bottom of the space with an upper permeation | transmission wall body structural member may be plugged up. Then, a space is formed by filling the space between the upper transmission wall body constituting member 7 and the sheath tube 21 with a curable material 24 such as mortar through a grout injection hose and the like, thereby forming a score. Yes. In the present invention, the horizontal load resistance and deformation performance of the water structure can be adjusted by adjusting the number of installation positions of the diagonal member 20 and the installation position of the sheath tube.
[0020]
Further, a wave-dissipating projecting body 25 is provided at an intermediate portion of the diagonal member 20 in the first embodiment in order to further improve the wave-dissipating effect. FIG. 7A is a transverse cross-sectional view of a structural example of a reinforced concrete wave-dissipating protruding body 26 having a cylindrical cavity, and FIG. 7B is formed using a steel pipe 27 and a steel plate 28 in a substantially rhombic cross section. It is a cross-sectional view of a structural example of the projecting body 25 for wave elimination. After any of the wave-dissipating protrusions 25 are extrapolated to the diagonal member 20, the time-curable material 24 such as mortar is filled between the diagonal member 20 and the wave-dissipating protrusions 25 to be in place. Fixed. Further, the steel plate 28 may be directly attached to the diagonal member 20 by welding without using the steel pipe 27.
[0021]
FIG. 8 is a side view of a water structure 1a having a water reserving chamber according to the second embodiment. Note that in the following second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
[0022]
The water body structure 1a of the second embodiment is different from the first embodiment in that a water passage slit 11 is formed between the rear wall members 12 and the rear wall 3 is an upper transmission wall. To do. Moreover, the superstructure 4 of 2nd Embodiment is formed only by the structure extension direction connection material A, the structure extension direction connection material B, and the cross-section direction connection material 15 made from reinforced concrete, and the superstructure 4 does not have a floor slab. It is.
[0023]
FIG. 9 is a side view of a water body structure 1b having a water reserving chamber according to the third embodiment. The third embodiment is an example in which the cross-sectional connection member 15 that connects the structure extension direction connection member A and the structure extension direction connection member B has a steel reinforced concrete structure.
[0024]
Moreover, FIG. 10 is a side view of the water body structure 1c having the water chamber of the fourth embodiment. The fourth embodiment is an example in which the upper transmission wall constituting member 7 and the rear wall constituting member 12 are supported by a lower portion support 32 made of a temporally curable material such as concrete disposed on the water bottom ground 6. In addition, as shown in FIG.10 (b), about the water body structure of 4th Embodiment, the bottom part support body 32 may be constructed | assembled by digging up a water bottom ground and setting up a time-hardening material.
[0025]
As mentioned above, although this invention has been demonstrated based on embodiment, the technical scope of this invention is not limited only to said embodiment. For example, the rear wall member may be formed of a steel sheet pile, and a backing material may be disposed to an appropriate height behind the rear wall [both are not shown].
[0026]
【The invention's effect】
According to the present invention, the following effects can be obtained.
(1) Since energy loss occurs in the wave incident from the slit for water passage formed in the upper transmission wall body and the wave reflected by the rear wall body, the reflected wave height (reflectance) can be reduced. .
(2) Since the lifting pressure of the wave incident at the same time is reduced, the structure of the superstructure can be simplified.
(3) By adjusting the ratio between the lower wall portion of the upper transmission wall body and the upper water passage slit, or by changing the width of the water reserving chamber (the distance between the upper transmission wall body and the rear wall body), The reflected wave reduction effect can be controlled. Further, by adjusting the length of the water passage slit in the member axial direction, finer control of the reflected wave reduction effect becomes possible.
(4) By adjusting the number of diagonal materials installed and the position of the sheath tube, the horizontal load bearing capacity and deformation performance of the water structure can be adjusted.
(5) The effect of reducing reflected waves can be further controlled by providing a wave-dissipating protrusion on the diagonal member.
(6) Since the sheath tube (including the diagonal member connected to the sheath tube) is directly inserted and placed in the joint-free portion above the joint of the upper transmission wall constituting member, the sheath tube is disclosed in Patent Document 1. There is no need to use a steel pipe pile for insertion (including diagonal members connected to the sheath pipe). For this reason, the structure is simplified, the economy is improved, and the construction period can be shortened.
[Brief description of the drawings]
FIG. 1 is a side view of a water body structure having a water reserving chamber according to a first embodiment.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
3 is a cross-sectional view taken along the line BB in FIG.
4 is a plan view of FIG. 1. FIG.
FIG. 5 is a view showing an example of a wall joint structure.
FIG. 6 is a view showing a joint portion between a sheath tube and an upper transmission wall member.
FIG. 7 is a cross-sectional view of a structural example of a wave-extinguishing projecting body.
FIG. 8 is a side view of a water structure having a water reserving chamber according to a second embodiment.
FIG. 9 is a side view of a water body structure having a water reserving chamber according to a third embodiment.
FIG. 10 is a side view of a water body structure having a water reserving chamber according to a fourth embodiment.
[Explanation of symbols]
1, 1a, 1b, 1c Water body structure 2 Upper permeation wall body 3 Rear wall body 4 Upper work 5 Reservoir chamber 6 Submarine ground 7 Upper permeation wall structural member 7a Joint 8 Male joint 9 Female joint 10 Water surface 11 Water passage slit 12 rear wall constituting member 12a joint 13 supporting ground 14 member axial load supporting wall constituting member 15 cross-section connecting member 16 upper joint A2
17 Upper coupling part B2
18 Filling material 19 Surface protective layer 20 Diagonal material 21 Sheath tube 22 Protrusion 23 Sealing 24 Temporarily hardened material 25 Protruding member 26 for wave breakage 27 Protruding member for wave breaking made of reinforced concrete 27 Steel tube 28 Steel plate 29 Steel member 30 Structure Extension direction connecting material A
31 Structure extension direction connecting material B
32 Lower support

Claims (13)

A large number of upper transmission wall body constituent members having joints continuously in the longitudinal direction of the member from a predetermined position below the ground surface of the water bottom ground to a predetermined position below the water surface are formed on the water bottom ground with the joints fitted. An upper transmission wall body having a water passage slit on the upper side is configured by being placed by means of placing or non-placement, and the head of the upper transmission wall body constituting member is a structure extension direction connecting member Connected to A,
The rear wall member is arranged at a position away from the upper transmission wall by a predetermined distance by means such as placing or non-casting on the bottom of the water, and the rear wall member is configured. Is connected to the structure extension direction connecting member B,
The structure extension direction connection material A and the structure extension direction connection material B are connected by a cross-sectional direction connection material, and include an intersection of the structure extension direction connection material A and the cross-section direction connection material. An upper coupling part A2 is formed, and an upper coupling part B2 is formed so as to include an intersection of the structure extension direction coupling member B and the cross-sectional direction coupling member, and the upper transmission wall body and the rear wall body A water chamber is formed between
An intermediate filling material is disposed between the upper transmission wall body and the rear wall body to form a lower water chamber lower layer, and a sheath pipe is provided at the non-joint portion at the upper part of the joint of the predetermined upper transmission wall member. An upper transmission wall member with a sheath tube is formed by extrapolation, and a lower end portion of an oblique member is connected to the sheath tube, and an upper end portion of the oblique member is connected to an upper coupling portion B, A water area structure having a water reserving chamber, characterized in that a gap is formed between the non-joint portion of the upper transmission wall constituting member and a time-hardening material is filled therein. The upper transmission wall body is composed of an upper transmission wall body structural member and a member axial load support wall body structural member disposed every several, and the member axial load support wall body structural member is: It is the said upper transmission wall body structural member with a sheath pipe, The lower end has reached the support ground, The water body structure which has a water reservoir of Claim 1 characterized by the above-mentioned. The rear wall body is composed of rear wall body constituting members and member axial load supporting wall body constituting members arranged at intervals of several, and the member axial load supporting wall body constituting member is the sheath. The water reserving chamber according to any one of claims 1 and 2, characterized in that it is disposed at a position facing the upper transparent wall constituting member with a pipe, and a lower end thereof reaches the support ground. A body of water structure.   The water body structure having a water-reserving chamber according to any one of claims 1 to 3, wherein a wave-dissipating protruding body is provided on a side surface of the diagonal member.   5. The water area structure having a water reserving chamber according to claim 1, wherein the surface of the lower layer of the water reserving chamber has a horizontal plane or a slope, or an arbitrary shape by a combination of a horizontal plane and a slope, or the like. object.   6. The water area structure having a water reserving chamber according to claim 5, wherein a surface protective layer is formed on a surface of the water reserving chamber lower layer.   The cross-sectional connecting material is made of reinforced concrete or steel-framed reinforced concrete, and the water area structure having a water reserving chamber according to any one of claims 1 to 6.   7. The water structure having a water-reserving chamber according to claim 1, wherein the cross-sectional connecting member is a corrosion-resistant or non-corrosive shaped steel or a steel pipe steel tube.   The water structure having a water-reserving chamber according to any one of claims 1 to 8, wherein a backing material is disposed up to a suitable height behind the rear wall.   Using the rear transmission wall member having a joint continuously in the longitudinal direction of the member from at least a predetermined position below the ground surface of the water bottom ground to a predetermined position below the water surface as the rear wall member. The water body structure having a water reserving chamber according to any one of claims 1 to 9, wherein the upper permeating wall body has a water passage slit.   The upper permeable wall body constituting member and the rear wall body constituting member are steel pipe sheet piles, and the water area structure having a water-reserving chamber according to any one of claims 1 to 10.   The water body structure having a water-reserving chamber according to any one of claims 1 to 9, wherein the rear wall member is a steel sheet pile.   The upper transmission wall member and the rear wall member are supported by a lower part support member made of a time-curable material such as concrete disposed on the water bottom ground. The water body structure which has a reclaimed water chamber of any one of 1-12.

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