Sheet Pile Wall

Abstract

To provide a sheet pile wall that shortens the construction period of an earth retaining wall for an excavation trench formed by cutting a road surface. [Solution] A plurality of sheet piles 12 are arranged with strip-shaped portions 16 on both side edges that are parallel to the retaining wall surface, and the opposing side edges of adjacent sheet piles 12 are welded together to form an integrated wall of a plurality of sheet piles 12. A reinforcing body 20 is provided that intersects with all of the integrated sheet piles 12 and is fixed to these sheet piles 12. If a hook 30 for suspending a sheet pile wall 28 is provided on the shoulder of the cut road surface, a construction method in which the sheet pile wall 28 is suspended and then the bottom end is covered with soil can be adopted.

Description

[Technical field]

[0001] This device relates to sheet pile walls used in construction such as burying water pipes. [Background technology]

[0002] When carrying out construction such as burying water pipes, a part of the road is excavated to a specified depth. At this time, an earth retaining wall is formed in the excavation trench. In general, sheet piles are driven into the ground at the bottom of the excavation trench one by one along the wall surface, and the earth retaining wall is completed by connecting them together (Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-324328 [Patent Document 2] Utility Model Registration No. 3003414 Summary of the Invention [Problem to be solved by the invention]

[0004] The known prior art has the following problems to be solved. For example, it takes time to drive sheet piles, each about 30 cm wide and 150 cm high, into the excavation trench one by one in order. Since waterworks and gas works are often carried out on roads with heavy pedestrian and vehicular traffic, it is desirable to shorten the time that traffic is blocked as much as possible. This device was made with the above points in mind, and is primarily intended to shorten the construction period of earth retaining walls. [Means for solving the problem]

[0005] The following configurations are each a means for solving the above problems.

[0006] <Configuration 1> A sheet pile wall is used as a retaining wall for an excavation trench formed by cutting a road surface, and is characterized in that it is made up of a number of sheet piles, whose opposing side edges are welded together when the sheet piles are lined up on a flat surface to form an integrated wall made up of a number of sheet piles, and is provided with reinforcing bodies that intersect all of the integrated sheet piles and are fixed to these sheet piles.

[0007] <Configuration 2> A sheet pile wall as described in configuration 1, characterized in that each sheet pile has a strip-shaped portion parallel to the retaining wall surface arranged on both side edges, and the opposing strip-shaped portions of adjacent sheet piles are welded to each other.

[0008] <Configuration 3> A sheet pile wall as described in configuration 1 or 2, characterized in that a hook for suspending the sheet pile wall on the shoulder of the cut road surface is fixed to the upper end of one of the sheet piles. Effect of the Invention

[0009] By welding multiple sheet piles together in advance and reinforcing them with reinforcing members, the work time required to form an earth retaining wall in an excavation trench can be shortened. Even without driving the lower end of the sheet pile wall into the ground at the bottom of the excavation trench, a retaining wall can be formed by piling up soil after hanging it. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1(a) is a front view of a first embodiment of the sheet pile wall of the present invention, and FIG. 1(b) is a front view of a modified example. [Diagram 2] FIG. 2 is an explanatory diagram of the connecting structure of the sheet pile wall of the present invention. [Diagram 3] This is a cross-sectional view of a cutting groove in which a sheet pile wall of the present invention has been constructed. [Figure 4] This is a front view of multiple sheet pile walls of this invention lined up and installed. [Diagram 5] This is a cross-sectional view of a cutting groove showing the construction procedure of the sheet pile wall in Example 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS EXAMPLES

[0011] As shown in Fig. 1(a), the sheet piles 12 are, for example, arranged in parallel and are welded together to form an integrated structure. This connection is performed in a factory before the sheet piles 12 are brought to the site. Fig. 2 shows a top view of the connection state of these sheet piles 12. As is well known, each sheet pile 12 is processed into a corrugated shape. When these sheet piles 12 are arranged on a flat surface, the opposing side edges are welded together to form a sheet pile wall 28 made up of multiple sheet piles.

[0012] When the sheet piles 12 are lined up on a flat surface such as a flat floor, if the opposing parts of the side edges of adjacent sheet piles that are at the same height from the plane are welded together, all the sheet piles will be integrated in a state where they are lined up flat on that plane. They are integrated in the state shown in Figure 2. Therefore, as shown in Figure 2, each part of the reinforcing body 20 is directly in contact with all the sheet piles 12 and welded to them, resulting in a sheet pile wall with high overall strength.

[0013] In the embodiment of Figure 2, strip-shaped portions 16 of an appropriate width are provided on both side edges of the sheet pile 12 in the portion parallel to the retaining wall surface (portion surrounded by a dashed line). Adjacent sheet piles 12 are arranged so that their strip-shaped portions 16 face each other. In this state, the strip-shaped portions 16 of adjacent sheet piles 12 are welded to each other. Welded connections 18 (Figure 1) may be provided in several places to maintain the strength of the connection. In this way, multiple sheet piles 12 are integrated. Furthermore, rod-shaped or plate-shaped reinforcing members 20 are welded to all of the sheet piles 12 so as to intersect with all of the sheet piles 12, thereby obtaining a sheet pile wall 28.

[0014] In this way, even if many sheet piles 12 are connected, the sheet pile wall 28 does not deform, and it is easy to transport it to the construction site. As shown in Figure 3, when the reinforcing body 20 is fixed to the surface of the sheet pile 12 facing the inside of the excavation trench 24, a support 36 for supporting the sheet pile wall 28 on the inside of the excavation trench 24 can be attached to this reinforcing body 20.

[0015] The sheet pile wall 28 shown in Fig. 1(b) is made by integrating about two or three sheet piles 12, which is fewer than that shown in (a). As shown in Fig. 4, sheet pile walls 28 of an appropriate width are arranged and constructed according to the length of the excavation trench 24. It is recommended to use a combination of a wide sheet pile wall 28 as shown in Fig. 1(a) and a narrow sheet pile wall 28 as shown in (b).

[0016] When the reinforcing body 20 is arranged on the surface facing inward of the excavation trench 24, as shown in Figure 4, when multiple sheet pile walls 28 are placed side by side, the reinforcing bodies 20 can be connected together using appropriate connectors 34. EXAMPLES

[0017] As shown in FIG. 3, in this embodiment, an inverted L-shaped hook 30 is fixed to the upper end 32 of the sheet pile. This hook 30 is used to hang the sheet pile wall 28 on the shoulder 26 of the excavated road surface. As shown in FIG. 3, the upper end of the sheet pile wall 28 can be positioned by driving the lower end of the sheet pile wall 28 into the bottom of the excavation trench 24, so construction can be completed easily. If the hook 30 bites into the shoulder 26 of the road surface, it also serves to prevent the sheet pile wall 28 from falling before the support 36 is attached. In this case, the lower end of the sheet pile wall 28 can be driven in only slightly, making construction easier. Any number of hooks 30 can be attached at appropriate intervals according to the width of the sheet pile wall 28.

[0018] Also, as shown in Fig. 5, it is possible to use a hook 30 to hang the sheet pile wall 28 on the shoulder 26 of the road surface, and then cover the bottom of the sheet pile wall 28 with soil, creating the same state as if the sheet pile wall 28 had been driven in. By adopting a construction method in which the sheet pile walls 28 are hung and arranged on the retaining wall surface of the excavation trench 24, and finally the bottom of the sheet pile wall 28 is covered with soil and fixed, the conventional work of driving the sheet piles 12 one by one becomes unnecessary, and an earth-retaining wall can be constructed in a short time, which is the same as the conventional method. This construction method can be used for both the sheet pile wall 28 in Fig. 1(a) and the sheet pile wall 28 in Fig. 1(b). [Explanation of symbols]

[0019] 12 Yaita 16 Belt 18 Welded joints 20 Reinforcement 24 Excavation trench 26 Shoulder 28 Sheet Pile Wall 30 Hook 34 Connector

Claims

1. A sheet pile wall is used as a retaining wall for an excavation trench formed by cutting a road surface, and is characterized in that it is made up of a number of sheet piles, whose opposing side edges are welded together when the sheet piles are lined up on a flat surface to form an integrated wall made up of a number of sheet piles, and is provided with reinforcing bodies that intersect all of the integrated sheet piles and are fixed to these sheet piles.

2. A sheet pile wall as described in claim 1, characterized in that each sheet pile has a strip-shaped portion parallel to the retaining wall surface arranged on both side edges, and the opposing strip-shaped portions of adjacent sheet piles are welded together.

3. 3. A sheet pile wall as claimed in claim 1 or 2, characterized in that a hook for suspending the sheet pile wall on the shoulder of the cut road surface is fixed to the upper end of one of the sheet piles.

Images