JPH07259084A - Pile, pile wall, and constructing method for pile wall - Google Patents

Abstract

PURPOSE:To ensure the strength of a steel pile and prevent rust generation by driving steel pile into the ground, and providing a covering member made of concrete alongside the steel pile. CONSTITUTION:A steel pile 2 is driven, and a covering member 3 made of concrete is provided using the steel pile 2 as a guide in the direction of its rising. A fluid coupling member 6 consisting of grout such as mortar is fitted by pressure into the gap between the covering member 3 and steel pile 2, which are coupled together by hardening of the coupling member 6. Thus a pile 1 is achieved in which the pile 2 and member 3 are consolidated. Because of using steel pile 2 as the core and driving it first, the pile 1 of this structure has a strength inherent in the steel pile 2. Further because the member 3 consisting of concrete encloses the easy-to-corrode areas, for example rusting, the steel pile 2 as the core is prevented from rusting, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile used for a revetment wall, a river wall and other retaining walls, a pile wall using the pile and a method for constructing the pile wall.

[0002]

2. Description of the Related Art In the construction of retaining walls, steel sheet piles,
The use of steel piles such as steel pipe sheet piles has been performed conventionally. This construction is carried out by driving the steel piles at a predetermined pitch so that the joint portions (grips) of the steel piles described above are engaged with each other. By driving the steel piles in this manner, adjacent steel piles are connected to each other to construct a pile wall.
On the other hand, concrete piles are also used. In this case, concrete piles are placed so as to be joined to each other, and a waterproofing material is filled in the joint portion of the adjacent concrete piles to form a retaining wall.

[0003]

Although the steel pile itself has strength, it has the drawback of rusting. For this reason, rust is generated from a portion in water in a short period of time, the rust spreads over the entire steel pile over time, the aesthetic appearance is deteriorated, and the original strength of the steel pile is also reduced. On the other hand, concrete piles have corrosion resistance against rust and the like, but their strength is low. Therefore, in order to obtain a predetermined strength, it is necessary to increase the cross-sectional area, which results in a large weight and a large size, which makes it difficult to drive and lowers work efficiency. The present invention compensates for the drawbacks of both such steel piles and concrete piles,
The purpose is to provide a pile having both advantages. Moreover, this invention aims at providing the pile wall which can have a long-term strength and aesthetics by using this pile. Another object of the present invention is to provide a construction method capable of suitably constructing this pile wall.

[0004]

The pile of the present invention comprises a steel pile and
This steel pile is provided with a covering member made of concrete for covering a predetermined outer peripheral portion in the length direction in a state of being connected to the steel pile. In this pile, since the outer peripheral portion of the steel pile is covered with the covering member made of concrete, the covering portion has corrosion resistance. Therefore, by placing the exposed portion of the steel pile in the ground and locating the coating portion of the coating member in water, the contact portion between the steel pile and water is eliminated, and rust can be prevented. Further, the pile of the present invention is a steel pile whose lower part is driven into the ground and stands up on the ground, and the steel pile so that the lower part is embedded in the ground while covering the outer periphery of the above-ground part of this steel pile. It is characterized in that it is provided with a covering member made of concrete that is cast along it, and a joining member for joining the steel pile and the covering member to each other. This pile is along the steel pile after placing,
Since a covering member made of concrete is cast and necessary portions are covered with the covering member, it has corrosion resistance. In addition, since the steel pile is originally driven, the strength of the steel pile is high and the characteristics of the steel pile that can be easily driven can be utilized. The joining member joins the steel pile and the covering member to each other and integrates them. The pile wall of the present invention is driven along each steel pile so that a plurality of steel piles having a predetermined interval in which the lower portion is driven into the ground and rises above the ground and other adjacent covering members are mutually joined. It is provided with a covering member made of concrete that is installed and has its lower part rooted in the ground and that covers the outer periphery of the above-ground portion of each steel pile, and a joining member that mutually joins each steel pile and the covering member. It is characterized by In this pile wall, since the covering members made of concrete are joined to the steel piles that are placed at a predetermined interval in a jointed manner, the covering members can be joined to each other for soil retention and the like. Further, each pile has both the corrosion resistance of the covering member and the strength of the steel pile. The pile wall may be filled with a water blocking material at the joint portion between the adjacent covering members, or the adjacent covering members may have an uneven fitting structure, or a combination thereof may be used. As a result, the covering members can be firmly and reliably connected, so that not only soil retention but also water stoppage is possible. It is also possible to attach a decorative member such as painting or tiling to the covering member on the pile and the pile wall as described above, which improves the aesthetic appearance. The construction method of the pile wall of the present invention is
A step of driving a plurality of steel piles at a predetermined pitch, and a covering member made of concrete that covers the outer periphery of each steel pile after the casting is placed along the steel piles by joining with other adjacent covering members. Characterized by comprising a step of rooting the lower part in the ground, and a step of joining the covering member and the steel pile to each other by a joining member when placing each covering member to each steel pile To do. In this construction, the strength of the steel pile placing step is high, and the characteristics of the steel pile, which is easy to place, can be fully utilized.
Then, since the coating member made of concrete is cast on each steel pile after driving, the corrosion resistance of the coating member can be imparted to the pile wall. Further, the steel pile and the covering member are firmly integrated with each other by joining them together with the joining member.

[0005]

In the pile of the present invention, since the outer peripheral portion of the steel pile is covered with the covering member made of concrete, the covering portion has corrosion resistance and can prevent rusting. Further, the pile of the present invention is formed by placing a covering member made of concrete along the steel pile after driving and covering a necessary portion with the covering member and connecting the steel pile and the covering member to each other with a connecting member. Therefore, it has corrosion resistance. Further, the characteristics of the steel pile, which has high strength and is easy to place, can be utilized. A plurality of steel piles are driven at a predetermined pitch, and a covering member made of concrete that covers the outer circumference of each steel pile after driving is driven along the steel pile by joining with other adjacent covering members and the lower part is When piled in the ground and driving each covering member to each steel pile, the covering member and the steel pile are connected to each other by a connecting member to form a pile wall.

[0006]

1 and 2 show an embodiment of a pile 1 of the present invention. The pile 1 includes a steel pile 2 and a covering member 3 that covers the steel pile 2. The steel pile 2 has a circular cross-section structure, and is driven into the ground 4 at a predetermined depth and rises above the ground.
The steel pile 2 may be placed by press fitting, striking, or vibration pressurization. At the time of this placement, as will be described later,
Since the steel pile alone is not attached with the covering member 3, the characteristics of the steel pile having high strength can be utilized, the placing means can be freely selected, and the placing can be performed easily. In FIG. 1, reference numeral 5 is an underwater portion in a river, lake, sea or the like, and the steel pile 2 is driven from the underwater portion 5 so as to rise above the water surface.

The covering member 3 is cast along the steel pile 2. The covering member 3 is formed of concrete into a substantially triangular tube shape, and is driven in the rising direction using the steel pile 2 after driving as a guide. Since this driving is performed by using the steel pile 2 as a guide and extrapolating to the outside thereof, it can be easily performed with a small pressure such as indentation. When driving the covering member 3, the lower part is placed in the ground 4. It is carried out so that it will enter a shallow invasion state. This covering member 3 has its root portion 3a.
It is driven so as to pass through the underwater portion 5 and cover the steel pile 2 on the water surface. Therefore, the underwater portion of the steel pile 2 which is easily rusted can be surely covered.

With respect to the gap between the covering member 3 and the steel pile 2,
As shown in FIG. 2, a fluid joint member 6 made of grout such as mortar is press-fitted, and the coating member 3 and the steel pile 2 are mutually joined by hardening thereof. Thereby, the steel pile 2 and the covering member 3 are firmly joined to each other to form the pile 1. Pile 1 of this structure
Has the strength of the steel pile 2 because the steel pile 2 is used as the core material and the steel pile 2 is driven first. Further, since the covering member 3 made of concrete covers a necessary portion (underwater portion 5 in the illustrated example) that is easily corroded such as rusting, it is possible to prevent rusting or the like of the steel pile 2 serving as the core material. Even if rusted, it does not spread beyond a certain level and the strength of the steel pile 2 does not decrease. Further, in the illustrated example, since the covering member 3 also covers the ground portion of the steel pile 2, rust is not visible and the appearance is not deteriorated.

Although steel piles having a circular cross section are used in the illustrated example, steel piles having a polygonal cross section such as a triangle or a rectangle may be used. The same applies to the covering member, as long as it has a tubular shape with a cross section such as a circle, a rectangle, and an ellipse.

FIG. 3 shows another example of a connecting member for connecting the steel pile 2 and the covering member 3. As the connecting member, a fastener 7 such as a bolt is used, and these can be firmly connected by screwing or driving so as to penetrate the steel pile 2 from the outer surface of the covering member 3.

4 to 6 show an embodiment of construction of a pile wall according to the present invention. First, as shown in FIG. 4, steel piles 2 are driven in the ground 4 at a predetermined pitch. The driving pitch is set so that the covering members are in a joined state. This casting is performed so that the steel pile 2 passes from the underground 4 through the underwater portion 5 and rises from the water surface. After placing the steel pile 2,
As shown in FIG. 5, a covering member 3 made of concrete is placed along each steel pile 2 by pushing or the like. This casting is carried out so that the lower part of the covering member 3 is rooted in the ground 4, but the covering members 3 adjacent to each other by the casting are in the state of being joined to each other, the above-ground portion including the underwater portion 5 of each steel pile 2. Cover. Since the covering member 3 is formed by casting a preformed product and covers the steel pile 2, the covering member 3 can be easily attached and the construction period can be shortened.

FIG. 6 shows the covering member 3 after the covering member 3 has been cast.
A fluid joint member 6 made of mortar between the steel pile 2 and the steel pile 2.
Shows the state of being filled and bonded by press fitting or the like. Thereby, the pile wall in which the covering members 3 are joined to each other is completed. Since this pile wall has the strength of the steel piles 2 of each pile 1 and the corrosion resistance of the covering member 3, the pile wall can have strength and beauty for a long period of time, and can surely retain soil.

FIG. 7 shows another embodiment of the pile wall of the present invention.
In this embodiment, the recess 15 is formed in the joint surface of the adjacent covering members 3.
Is formed, and the recess 15 is filled with a water blocking material 8 such as water blocking mortar. The filling of the water blocking material 8 eliminates a gap between the covering members 3 so that not only soil retention but also water blocking can be performed.

FIG. 8 shows a state in which adjacent covering members 3 are connected to each other by a joint member 9. The joint members 9 are connected to each other by fitting them in the longitudinal direction of the adjacent covering members 3, which has an advantage of preventing mutual displacement of the covering members 3 and a water blocking effect.

FIG. 9 shows another example of joining the covering member 3,
The convex portion 10 is formed on one of the covering members 3 and the concave portion 11 is formed on the other adjacent covering member 3, and the concave portions 11 are joined to each other by a concavo-convex fitting structure. By such concave-convex fitting, the adjacent covering members 3 are firmly joined to each other, and the filling of the water blocking material becomes unnecessary. Further, the steps can be simplified because the covering members 3 can be joined to each other at the same time they are placed.

FIG. 10 shows a decoration process on the surface of the covering member 3. A wood plate, a tile plate, a ceramic plate, a plastic plate, and other decorative plates 12 are attached to the surface of each covering member 3 by fastening or fastening materials 13 such as bolts and nails. The decorative plate 12 makes the concrete skin of the covering member 3 invisible, and at the same time, the cosmetic property of the decorative plate 12 is imparted. Therefore, the appearance is improved. To impart this decorative property, paint or colored cement may be applied to the surface of the covering member 3,
The surface of the covering member 3 may be subjected to a satin finish, a coloring finish, or a concavo-convex finish, which can be appropriately selected.

[0017]

The pile of the present invention has a large strength of the steel pile because the covering member made of concrete covers the outer surface of the steel pile.
Has excellent corrosion resistance of the covering member, can suppress rust generation,
Moreover, the appearance does not deteriorate for a long period of time. In the pile wall of the present invention, since the covering member made of concrete is placed in a joined state with respect to the steel piles that are placed at a predetermined pitch, soil retention and the like can be reliably performed, and the strength and the covering member of the steel pile are provided. It has both corrosion resistance. The method of constructing a pile wall of the present invention is to pour a steel pile having high strength and easy to pour at a predetermined pitch, and then piling a covering member made of concrete along the steel pile. It can be installed quickly.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a driving state of a pile of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view showing another example of the connecting member.

FIG. 4 is a front view showing construction of a pile wall of the present invention.

[Figure 5] Front view showing the next stage of pile wall construction

FIG. 6 is a cross-sectional view from the plane of an example of a pile wall.

FIG. 7 is a cross-sectional view of a pile wall using a waterproofing material from a plane.

FIG. 8 is a cross-sectional view showing an example of interconnection of covering members.

FIG. 9 is a sectional view showing a concavo-convex fitting structure.

FIG. 10 is a cross-sectional view of an example of decoration processing.

[Explanation of symbols]

 1 Pile 2 Steel pile 3 Covering member 4 Underground 5 Underwater portion 6 Joining member 7 Fastening member 8 Water stop material

Claims (10)

[Claims] 1. A pile comprising a steel pile and a covering member made of concrete for covering a predetermined outer peripheral portion of the steel pile in a longitudinal direction in a combined state with the steel pile. 2. A steel pile whose lower portion is driven into the ground and rises above the ground, and a steel pile which is driven along the steel pile so as to cover the outer periphery of the above-ground portion of the steel pile and the lower portion to be embedded in the ground. A pile provided with a covering member made of concrete to be installed, and a joining member for joining the steel pile and the covering member to each other. 3. The pile according to claim 1, wherein the outer surface of the covering member is decorated. 4. A plurality of steel piles each having a lower portion which is driven into the ground and rises above the ground and having a predetermined interval, and the steel piles are driven along the respective steel piles so as to be joined to other adjacent covering members. A pile wall having a covering member made of concrete that covers the outer circumference of the above-ground portion of each steel pile and a lower part of which is embedded in the ground, and a connecting member that connects the steel pile and the covering member to each other. 5. The pile wall according to claim 4, wherein a joint portion between adjacent covering members is filled with a water blocking material. 6. The pile wall according to claim 4, wherein adjacent covering members are joined by a concave-convex fitting structure. 7. The pile wall according to claim 4, wherein the outer surface of the covering member is provided with a decorative property. 8. A method of driving a plurality of steel piles at a predetermined pitch and joining a covering member made of concrete for covering the outer periphery of each steel pile after the casting with another adjacent covering member along the steel pile. And the step of placing the lower part in the ground, and the step of connecting the covering member and the steel pile to each other by a connecting member when placing each covering member on each steel pile. How to construct a pile wall. 9. The method of constructing a pile wall according to claim 8, wherein a water blocking material is filled in a joint portion between adjacent covering members. 10. The method for constructing a pile wall according to claim 8, wherein the surface of the covering member after driving is subjected to decoration treatment.