JPS602314Y2 - Lining element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to a lining element for use, for example, in permanent construction.

Conventionally, many of the lining elements used in permanent construction, such as tunnel construction, are made of commercially available H-shaped steel.

As shown in Fig. 3, this is a commercially available H-shaped steel 101.
, 102 are connected (10
3, female joints 104 and 105 are attached to both edges in the longitudinal direction to facilitate connection in the width direction.

This lining element is installed at a position indicated by reference numeral 109 when, for example, a tunnel 108 is to be constructed below the road line 107 as shown in FIG.
It is used for the purpose of preventing earth and sand from entering the area where construction work such as tunnel excavation and tunnel wall construction is being carried out.

However, conventional lining elements that use H-shaped steel welded as they are leave quite deep grooves on both sides except for the central cavity, so a large amount of earth and sand gets stuck in these grooves during installation work, making it difficult to handle. However, in order to alleviate this drawback to some extent, an extra step such as separately attaching earth retaining plates 106 to both sides as shown in FIG. 3 is required, which is disadvantageous in that it increases the processing cost.

This invention was made in view of the above circumstances, and its purpose is to provide a lining element that has excellent functions in terms of strength and joint accuracy as a permanently constructed lining element. be.

This invention will be explained below based on embodiments shown in the drawings.

What is shown in FIGS. 1a and 1b is a first example of the lining element according to this invention.

What is indicated by the reference numeral 1 in the figure is the element main body, and this element main body 1 has long flat plates 2a, 2a arranged parallel to each other on the upper and lower surfaces, and side plates 3a, 3a, and is constructed as an integral columnar body having a hollow portion 4.

By the way, both side edges 3b, 3b of the side plates 3a, 3a are bent at a predetermined angle in the direction of the hollow portion 4,
Approximately V-shaped grooves 5 are formed at the joints with the flat plates 2a, 2a, that is, at each corner of the element body 1.

In other words, if expressed in the opposite way, both side plates 3a, 3a are bent outward so that their respective central parts are separated from each other, and their outer surfaces are almost flush with both side edges of the flat plate. is set to .

On the other hand, both side edges of the flat plates 2a, 2a have female joints 6 (
In this embodiment, it has a dovetail shape.

), one side of which is the top and bottom (the right side in the figure)
Female joints 6, 6 are fitted with female joints having dovetail slits 7, 7 on the left and right sides.

What is shown in FIGS. 2a-'c are the second, third, and fourth examples.

First, in the second example shown in Figure a, the side edges 10b, 10b of the side plates 10a, 10a are formed into a substantially hook shape. It will be very good.

The third example shown in the figure is one in which both side plates 20a, 20a are bent at the center along the longitudinal direction to form a substantially dogleg shape. Although the space at the connecting part is a little larger than that, the space can be made very small compared to the conventional type.

The fourth example shown in FIG. can.

In the figure, the same components as shown in the first example are denoted by the same reference numerals, and their explanations will be omitted.

Further, although the explanation has been given as an example in which no reinforcing member is interposed in the hollow portion 4 on each side, for example, at a predetermined interval from the side plate.

Therefore, an appropriate number of reinforcing members may be interposed.

Next, the operation of this invention with the above configuration will be explained.

First, talking about manufacturing, as the lining element is clear from the above-mentioned structure, it is quite long and hollow, so it is technically quite difficult to form it by one molding. It is also disadvantageous in terms of cost.

Therefore, the flat plates 2a, 2a and the side plates 3 that constitute the upper and lower surfaces are
A and 3a are prepared separately and assembled integrally by welding.

In this welding, the groove portion 5 formed in a part of the corner...
This is done using a method to create a strong weld.

On the other hand, the functional action of the lining element is the side plate 3ay3.
Bend the side edge of a at an appropriate angle to form a flat plate 2a,
Since the groove 5 is formed at the corner of the joint with the side plate 3a, the fitting device of the female joint 8 can be smoothly fitted, and the side plate 3a
, 3a can be given appropriate elasticity.

In addition, the outer surface of the side plate 3 at 3 a is made to protrude flush with both side edges of the flat plates 2 a and 2 a disposed on the upper and lower surfaces, respectively, so that the space for the joint after connection can be reduced.

Furthermore, although the joints between the side plates 3a, 3a and the flat plates 2a, 2a are bent, they are set at positions much closer to the side edges of the flat plates 2a, 2a than in conventional lining elements. The side edge supporting force of the flat plates 2a, 2a is very strong.

Therefore, during pouring, the female joint 6 and the female joint 8 are not bent and can be smoothly connected.

Since this invention has the above-described structure and operation, it is easy to manufacture and has sufficient strength, and moreover, smooth connection can be performed without deformation of each joint.

In addition, the joint has a narrow space, which reduces the space clogged with dirt, etc., and conversely, the space for concrete pouring can be widened, resulting in a significant improvement in strength and other excellent effects.

[Brief explanation of drawings]

Fig. 1a is a perspective view showing a first embodiment of the lining element according to the invention, and Fig. 2a is a sectional view of the same.
"c is a cross-sectional view showing the second, third, and fourth embodiments, respectively; FIG. 3 is a perspective view showing an example of a conventional lining element; and FIG. 4 is a lining element for tunnel construction as an example. It is a simplified perspective view showing the application location of the element. 1... Element main body, 2a... Flat plate, 3 C? 10 at 20 at 30
a...Side plate, 4...Hollow part, 5...
...Groove, 6...Female joint, 8...
Female fitting.

Claims (1)

[Claims for Utility Model Registration] A hollow columnar element body 1 whose cross-sectional shape is approximately rectangular due to mutually parallel flat plates 2a, 2a and both side plates 3at3a disposed between the flat plates 2a, 2a.
and a lining element configured to connect the element main body 1 and another element main body to be connected via male and female joints provided therein, the element main body 1 having both flat plates 2a, 2a. is provided with male joints 6, 6 on one side of both longitudinal edges, and a female joint 8° on the other side. 8 is provided, and both side plates 3at3 of the element main body 1
(a) is a lining element characterized in that each central portion thereof is bent outward so as to be spaced apart from each other;