JPS5944420A - Steel material for sheathing wall - Google Patents

Abstract

PURPOSE:To produce an economical steel material having a high rigidity by providing couplers for connection on both ends of a longer flange in an unequal- sided H-shaped steel material in wich the width of one flange is longer than that of the other flange. CONSTITUTION:Soil cement pillars or soil cement asphalt pillars 11 are formed in rows under the ground 10, and steel materials 9 for a sheathing wall are penetrated. The steel materials 9 are coupled with each other under the guidance of couplers for connection and penetrated, and the adjacent steel materials are connected with the couplers 4 in order. The steel materials having a high rigidity per unit weight ratio and a high economy can be easily connected even for nonlinear portions or corner portions because the steel material is made into unequal-sided H-shaped one.

Description

[Detailed description of the invention] The present invention relates to steel materials used when forming retaining walls.

Conventionally, this type of steel has been used, for example, as shown in Fig. 1, with a cross-sectional shape (5) provided with connecting joints (4) at both ends, or with equal sides as shown in Fig. 2. Connecting joints (4) at both ends of each flange (7) of the H-shaped steel (6)
It is well known that the establishment is just in case. However, the steel shown in Figure 1 has a smaller ductility per unit weight than the equilateral H-shaped steel (6) shown in Figure 2, and a thicker steel must be used to obtain the necessary rigidity. This would be uneconomical. In addition, since the flanges (7) of the one shown in Figure 2 are equilateral, if the retaining wall is non-straight in cross section or has a -, when forming these, please refer to Figure 3. As shown in the figure, the flanges (7) of adjacent equilateral H-shaped steel (6) get in the way and cannot be connected, and in this equilateral H-shaped steel (6), both ends of one flange (7) The number of connecting joints (4) is excessive and there is a problem with this fair economy.

The present invention was invented in view of the above points, and its purpose is to use scalene H-shaped steel, which has high rigidity per unit weight ratio and is economical. To provide a steel material for a mountain retaining wall that can be reliably connected even when forming a mountain retaining wall having.

In the present invention, the width of one flange (1) is the same as that of the other flange (1).
2) Regarding a steel material for a mountain retaining wall, which is characterized by having a scalene H-beam steel (3) longer than the width, with connecting joints (4) provided at both ends of the longer flange, :;fil. It is. This will be explained in detail below using examples. FIG. 4 shows an example of the steel material (9) for retaining walls according to the present invention, in which one of the flanges of the conventional narrow H-shaped steel is extended to both sides to extend the extension part (8).
) with a flange (1).

Therefore, the flange (1) having this extension (8) has a longer width than the other flange (2). A connecting joint part (4) having a C-shaped cross section, a hook shape, etc. is further provided at the tip of the extension part (8) existing at both ends of the longer flange (1). Here, to show a specific example of the steel material (9) for retaining walls of the present invention, in FIG. 4, A=4
00, B=600, B'=200, tl=4.
5 +u+, t2= 61nls ts= 18 r
ss, but it goes without saying that it is not necessarily limited to the above numerical values. Therefore, soil cement columns and soil cement asphalt columns (river etc.) are formed on the ground (10), and when these soil cement columns and soil cement asphalt columns (+1) are unhardened, steel materials for retaining walls ( 9) and insert the steel material (9) for the next retaining wall.
Insert the joint part (4) for all connections while engaging as a guide, connect the steel materials (9) for adjacent retaining walls with the joint part (4) for connection, and in the same way, connect the retaining walls one after another. In this way, the steel material for retaining walls (9) is used to form retaining walls made of soil cement, soil cement asphalt, etc. as the entire core material. Here, the steel material (9) for the mountain retaining wall becomes a stress member of the mountain retaining wall, and also serves as a water-stopping member by being connected by the connecting joint part (4). In the above example, steel material (9) for retaining walls, soil cement as the entire core material,
Although an example of a retaining wall made of soil cement asphalt etc. is shown, the steel material for retaining wall of the present invention (9) directly into the ground (IO) is shown.
A retaining wall may be formed by erecting the retaining wall using the impact method, vibration method, or press-fitting method, and connecting the connecting joints (4) of adjacent copper materials (9) for retaining walls. Of course.

By the way, in the steel material (9) for retaining walls of the present invention, one flange fi+ is longer than the other flange (2), so even when the retaining wall is non-linear or has a corner part, the fifth As shown in the figure, the shorter flanges (21+21) of adjacent steel materials (9) for retaining walls can connect the longer flanges (21+21) without interfering with each other.

In the present invention, as described above, in the scalene H-shaped steel where one flange width is longer than the other flange width, connecting joint portions are provided at both ends of the longer flange.
While maintaining the shape of H-shaped steel, there are no excess parts, and the rigidity per unit weight ratio is high, making it economical.Also, although it is an H-shaped steel, it is a scalene H-shaped steel, so it can connect connecting joints. In this regard, even if the parts are in a non-linear shape or at a corner part, they can be connected without the flanges on the other side becoming a hindrance since they have a connecting joint part.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional example, Fig. 9J2 is a sectional view of another conventional example, Fig. 3 is an explanatory diagram of an example in which the coring part cannot be connected in the conventional example of Fig. 2, and Fig. 4 is a sectional view of the conventional example. A sectional view of an embodiment of the invention, and FIG. 5 is a sectional view showing an example of use of the same as above, in which (1) is a flange, (2) is a flange, (3) is a scalene H-shaped steel, (4) is a connecting joint part. Agent Patent Attorney Ishi 1) Cho Shichi (6) Figure 1 Prisoner 2 Figure 3

Claims (1)

[Claims] [11] A steel material for a mountain retaining wall, characterized in that the scalene H-shaped steel has one flange width longer than the other flange width, and a connecting joint portion is provided at both ends of the longer flange.