JPS5913607B2 - Steel box frame construction method - Google Patents

Description

[Detailed Description of the Invention] The present invention is applicable to civil engineering works, especially on unstable or unstable ground such as mountainsides, forest roads, embankments, river banks, etc. This relates to the box-frame construction method.

As for the steel box frame which is used by filling the inside with stones, the present applicant has already filed Utility Model Application No. 49-26004 (Utility Model Application No. 5
There is a steel box frame for civil engineering works (No. 2-39298), in which the joints of the component parts are made vertically rotatable, making the entire box frame flexible, and it is soft and weak. It has the excellent effect of being able to be constructed on the ground, and by filling the interior with stone, stability is maintained and it can be used as a gravity-type structure with long-term durability. Even if each box frame itself is flexible, each steel box frame is connected with pins on unstable ground where it is likely to occur, making it impossible to respond to or follow the ground.

The present invention has been made to solve these problems, and each steel box frame can be slid up and down, making it possible to construct a steel box on unstable ground that is prone to uneven settlement or uneven ground. The aim is to provide a box-frame construction method.

Examples of the steel box frame construction method according to the present invention will be described below.

First of all, the structure of the steel box frame 1 will be explained with reference to FIG. ,
Vertical frame rods 4 made of H-shaped members with connecting plates 3 fixedly attached to both upper and lower ends are arranged, and the left and right ends and the middle of each horizontal frame rod 2 and the connecting plates 3 are connected and fixed with bolts and nuts. A rectangular frame 5 is formed at the front and rear.

Between the four corners of the front and rear rectangular frames 5, and between the upper and lower middle portions, horizontal rods 7 made of H-shaped members with connecting plates 6 fixedly installed at both front and rear ends are arranged. Both upper ends of the frame rod 4 and the connecting plate 6 are connected and fixed with bolts and nuts to form a rectangular parallelepiped framework.

On the front, rear, left, and right sides of this framework, a plurality of vertical rods 8 made of H-shaped members are arranged at regular intervals in parallel with the vertical frame rods 4, and both upper and lower ends of the vertical rods 8 are connected to the horizontal frame rods 2 and 4. It is connected and fixed to the horizontal rod 7 with bolts and nuts.

Further, on the lower surface of the framework, horizontal rods 9 made of a plurality of H-shaped members are arranged at regular intervals in parallel with the horizontal rod 7, and both front and rear ends of the horizontal rods 9 are connected and fixed to the horizontal frame rods 2 with bolts and nuts. There is.

Then, after filling the upper surface of the framework with stones of 200 mm or more when in use, a plurality of horizontal bars 9 made of H-shaped members are arranged at regular intervals parallel to the horizontal bars 7, and both front and rear ends of the horizontal bars 9 are placed on the horizontal frame bars. 2 with bolts and nuts to form the box frame 1.

However, on one side of the box frame 1, in this example, on the right side, a clamping rod 11 made of a pair of T-shaped members is bolted to the front and rear surfaces of the middle part of each vertical frame rod 4, with a spacer 10 interposed therebetween. It is connected and fixed with a nut and protrudes outward.

A bolt hole is bored at the tip of this clamping rod 11.

Next, construction of the steel box frame construction method of the present invention using the steel box frame 1 having such a structure will be explained.

Assemble the steel box frame 1 on the ground in a place to prevent erosion and flow of earth and sand, and similarly assemble the steel box frame 1 next to it as shown by the chain line, as well as the right side of the previously assembled steel box frame 1. The vertical frame rod 4 on the left side of the adjacent steel box frame 1 is placed between a pair of clamping rods 11 protruding outward from the front and rear surfaces of the middle part of each vertical frame rod 4 of the frame.
A bolt is inserted into the bolt hole at the tip of the clamping rod 11, and a nut is tightened to prevent the vertical frame rod 4 disposed inside the clamping rod 11 from coming off, and the steel box frame is 1 are connected so that they do not separate in the left and right direction.

Thereafter, the steel box frames 1 are successively assembled and connected in the same manner to form a steel box frame group as shown in Fig. 2a, and each steel box frame 1 is filled with stones, and stones are placed on the top surface at regular intervals. The horizontal rod 9 is arranged parallel to the horizontal rod 7, and both front and rear ends thereof are connected and fixed to the horizontal frame rod 2, and the construction of the steel box frame structure 12 is completed.

As described above, in the steel box frame structure 12 made by the steel box frame construction method of the present invention, each steel box frame 1 can slide in the vertical direction, so that the ground is leveled as shown by the chain line in Fig. 2a. Even if the steel box frame 12 is unevenly settled, only the steel box frame 1 installed on the sunken ground is lowered, so that the entire steel box frame 12 is not deformed and is stable.

Furthermore, even when the steel box frame structure 12 is fabricated by the steel box frame construction method of the present invention on ground with severe elevation as shown in Fig. 2, each steel box frame 1 can be slid up and down. Since the steel box frames 1 can be stably installed on the ground, the connecting parts of the steel box frames 1 will not be damaged.

The steel box frame 1 in the above embodiment is of the type that is stacked on top of each other, but in the case of the type that is connected above,
As shown in FIG. 3, the connecting plates 3 at both the left and right ends of each upper horizontal frame rod 2 and the intermediate connecting plates 3 and the connecting plates 6 at both front and rear ends of the upper horizontal frame rod 7 project upward as shown in FIG. It is preferable to connect the lower ends of each vertical frame rod 4 at the same time.

In addition, bolt holes are drilled at the tips of the pair of clamping rods 11 that connect each steel box frame 1, so that when the vertical frame rod 4 of the adjacent steel box frame is arranged within the pair of clamping rods 11, The bolts are inserted and tightened with nuts to prevent the vertical frame rods 4 from coming off, but the vertical frame rods 4
For example, as shown in FIG. 4, the tips of a pair of clamping rods 11 are each bent outward in an L shape, and a grooved plate 13 is attached to the bent portion to secure the bolts and nuts. It may also be tightened by hand.

In addition, since the clamping rods 11 have a length of about
Since it does not come out from between the pair of clamping rods 11, it is also possible to leave the ends of the clamping rods 11 open as shown in FIG.

Further, the clamping rod 11 is fixed to the vertical frame rod 4 with bolts and nuts, but it may also be fixed by welding.
Further, the clamping rod 11 is not limited to the T-shaped member, but may be a groove-shaped member, an H-shaped member, or the like.

Of course, the members constituting the steel box frame 1 are not limited to H-shaped members, but may also be channel-shaped members, L-shaped members, square steel pipes, and the like.

Furthermore, a clamping rod 11 is attached to the intermediate front and rear surfaces of the vertical frame rod 4 of the steel box frame 1.
By increasing the number of spacers 10 interposed during installation and increasing the dimension between the pair of front and rear clamping rods 11, the connected steel box frame 1 can be rotated in the front-back direction, so that it can be rotated in the horizontal direction. It can be constructed stably by adapting to curved terrain.

As detailed above, the steel box frame structure made by the steel box frame construction method of the present invention has each steel box frame connected so that it can slide up and down and filled with stones. When construction is performed on rough ground or unstable ground with many ups and downs, each steel box frame can be adapted to the ground, and if uneven settlement occurs, only the steel box frame in that area will follow. can be done.

Therefore, deformation of the entire steel box frame structure can be prevented, and without damaging the connecting portions of each steel box frame, the entire steel box frame structure is stabilized by adapting to the ground, and does not collapse.

Further, the steel box frame construction method of the present invention has excellent effects such as extremely simple assembly and construction because the steel box frames need not be connected with pins but only have to be connected so as to be able to slide up and down.

[Brief explanation of drawings]

Figure 1 is a perspective view of the steel back box frame used in the steel box frame construction method of the present invention, and Figures 2 a and b show the steel box frame construction method of the present invention using the steel box frame, respectively. FIG. 3 is a perspective view showing a modified example of the steel box frame, and FIGS. 4 and 5 are perspective views showing partially modified examples of the connecting portion of the steel box frame. be. 1...Steel box frame, 2...Horizontal frame rod, 3.
...Connecting plate, 4...Vertical frame rod, 5...
... Rectangular frame, 6 ... Connection plate, T ... Horizontal rod, 8 ... Vertical rod, 9 ... Horizontal rod, 10
...Spacer, 11 ... Clamping rod, 1
2... Steel box frame structure, 13... Channel plate.

Claims (1)

[Claims] 1 Steel box frames consisting of rectangular frames are arranged in sequence in the left and right direction, and adjacent steel box frames are connected so as to be slidable in the vertical direction to form a steel box frame group, and the latter steel box frames A steel box frame construction method characterized by building a steel box frame structure by filling the inside with stones.