JP7051182B2 - Lining board - Google Patents

Description

The present invention relates to a lining plate that can be used in combination with a standard lining plate as well as being able to increase the strength.

When constructing underground structures such as subway construction and underground buried pipe construction, excavation work is performed from the surface to the ground to form an underground space. The opening on the ground surface of the underground space is covered with a lining plate when the construction of the underground structure is being carried out. As a result, the road surface is formed by the lining plate, and vehicles and pedestrians can pass on the lining plate even during the construction of the underground space.

The lining plate is formed in a rectangular shape by arranging a plurality of shaped steels in parallel, and is laid over a girder temporarily provided at an opening on the ground surface. The standard lining plates have a width of about 1 m, a length of 2 m, a length of 3 m, 4 m, and the like, and the thickness thereof is about 20 cm.

Such a lining board is also laid on the gantry constructed at the construction site, and is also laid on the pier when constructing the pier.

In order to efficiently perform the work of laying the lining plate on the girder material and the work of removing the lining plate from the girder material after the construction is completed, Patent Document 1 describes a large lining plate. There is. This large lining plate is formed by connecting a plurality of lining plates of standardized sizes with bolts at the long sides.

Japanese Unexamined Patent Publication No. 2013-174066

Conventionally, lining plates having a plurality of lengths have been standardized, but the thickness of each is unified to about 20 cm. Therefore, the weight of the construction machine and the civil engineering machine that can run on the lining plate is limited, and the heavy construction machine and the like cannot work on the lining plate.

However, in recent years, in order to improve the efficiency of construction of subway structures, there is an increasing need for heavy construction machines and the like to work on lining boards. In order to increase the strength of the lining plate, it is necessary to increase its thickness, but a thick lining plate cannot be used in combination with a lining plate standardized to a thickness of 20 cm.

At the construction site where the lining plate is laid, if there is an area where high strength is not required adjacent to the area where high strength is required, a standardized lining plate and a high-strength lining plate are used. It is inevitable to use in combination.

The present invention has been made based on the above-mentioned technical background, and an object of the present invention is to provide a lining plate that can be used in combination with a standard lining plate while increasing the strength.

In order to solve the above problems, the lining plate of the present invention according to claim 1 is a plurality of shaped steels provided with parallel front and back flanges and a web integrated with the front and back flanges. A rectangular lining plate main body formed by arranging the lining plates in parallel, a mounting surface formed on the web by cutting out the back sides of both ends of the lining plate main body, and fixed to the mounting surface. The thickness of the mounting portion is made to correspond to the thickness of the standard lining plate having a bottom plate forming a mounting portion to be mounted on the girder at both ends of the lining plate main body and having a uniform thickness over the entire length. It is characterized in that the thickness of the region between the mounting portions is made thicker than that of the mounting portion.

In the invention of claim 1, the lining plate of the present invention according to claim 2 is provided with a slit to be inserted into the web in the bottom plate, and the bottom plate and the web are fixed at the slit portion. It is characterized by.

According to the third aspect of the present invention, in the invention according to the first or second aspect, the length of the mounting portion in the long side direction of the lining plate body is at least 1.5 times the width dimension of the girder material. It is characterized by the fact that.

The present invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein side plates are attached to both side surfaces of the lining plate main body, and between both ends of the side plates and the bottom plate. Is characterized by providing a communication gap for communicating the inside and the outside of the lining plate main body.

According to the present invention, mounting portions formed by notching are provided at both ends of the lining plate, and the area between the mounting portions, that is, the thickness of the trunk portion is thicker than the thickness of the mounting portion. Therefore, the lining plate is strengthened and can withstand a high load. Even if the thickness of the mounting portion is made thinner than the thickness of the trunk portion, a large bending stress is not applied to the mounting portion, so that the lining plate can withstand a high load.

Moreover, by reducing the thickness of the mounting part, the thickness of the lining plate as a standard product having the same overall length and the thickness of the mounting part can be set to be the same, so that the thickness can be mixed with the standard product. The lining plate of the present invention can be used together.

It is a perspective view which shows the surface side of the lining plate which is one Embodiment. It is a perspective view which shows the back side of the lining plate of FIG. It is a plan view of FIG. It is a plan view of FIG. FIG. 3 is a front view of FIG. 3 with the side plate removed. (A) is a vertical sectional view of the H-shaped steel constituting the lining plate, (B) is a sectional view taken along line AA in (A), and (C) is a front view showing a side plate. FIG. 5 is an enlarged front view of part B in FIG. FIG. 3 is an enlarged view showing an end surface of the lining plate main body as seen from the direction of the line CC in FIG. FIG. 3 is an enlarged cross-sectional view taken along the line DD in FIG. It is a perspective view which shows the state which a plurality of lining plates are attached to the girder material. It is a perspective view which shows the back side of FIG. It is a perspective view which shows the state which two sets of lining plates are shifted in the length direction and attached to a girder. It is a perspective view which shows the back side of FIG.

The lining plate 10 shown in FIGS. 1 and 2 has a rectangular lining plate main body 12 formed by arranging and joining four shaped steels 11 in parallel. As shown in FIGS. 6A and 6B, each shaped steel 11 has a flange 13 on the front side and a flange 14 on the back side, and both flanges 13 and 14 extend in parallel with each other. It is united via the web 15. The shaped steel 11 is an H-shaped steel having flanges 13 and 14 and a web 15 integrated at the central portion in the width direction thereof, and having an H-shaped cross section.

Regarding the lining plate 10, in this specification, the upper surface when used is defined as the front side, and the lower surface is defined as the back side. As shown in FIG. 1, the flange 13 on the front side is provided with a pattern called a striped pattern. The flange 14 on the back side is also patterned, but the pattern is omitted in the drawings such as FIG.

In FIGS. 1 and 3, of the four shaped steels 11, the inner two are indicated by the reference numerals 11a and the outer two are indicated by the reference numerals 11b.

A notch 16 is provided on the back side of both ends of each shaped steel 11 in a range of length E from the end face, and the flange 14 on the back side is cut off in the range of the notch 16 and the web 15 is formed. The back part of the steel is partially excised. By cutting out the back side portion of the web 15, mounting surfaces 17 are formed at both ends of the shaped steel 11.

In this way, four shaped steels 11 having mounting surfaces 17 formed at both ends thereof are arranged in parallel, and the flanges 13 and 14 of the adjacent shaped steels 11 are butted against each other, and the sides of the butted flanges 13 and 14 are abutted against each other. By welding the sides, all the shaped steels 11 are joined to form the lining plate main body 12. Since the lining plate main body 12 has four shaped steels 11, four mounting surfaces 17 are provided on the webs 15 on the back sides of both ends of the lining plate main body 12, as shown in FIGS. 4 and 5. Is formed.

As shown in FIGS. 5 and 7, the bottom plate 18 is abutted against the mounting surface 17 and mounted. As shown in FIG. 4, the bottom plate 18 is formed with a slit 19 to be inserted into the web 15, and by inserting the slit 19 into the web 15, the bottom plate 18 is assembled to the shaped steel 11. The bottom plate 18 is welded to the web 15, and the slit 19 is also welded to the web 15.

The area of the bottom plate 18 corresponding to the mounting surface 17 is the mounting portion 20, and the mounting portions 20 to be mounted on the girder are formed at both ends of the lining plate main body 12.

As shown in FIGS. 3 and 7, reinforcing plates, that is, stiffener plates 21 and 22 connecting the front flange 13 and the bottom plate 18 are fixed to the outer shaped steel 11b of both ends of the lining plate main body 12. ing. The strength of the four corners of the lining plate main body 12 is enhanced by these stiffener plates 21 and 22. Further, at the position of the step portion 15a formed on the web 15 by the notch portion 16, the stiffener plate 23 for connecting the front side flange 13 and the bottom plate 18 and the stiffener plate for connecting the bottom plate 18 and the back side flange 14 are connected. 24 is fixed. The stiffener plate 24 has a length corresponding to the width of the flange 14 on the back side. Further, a plurality of stiffener plates 25 are fixed to each shaped steel 11 so as to be located in a region between the stepped portions 15a at both ends. Each of the stiffener plates 21 to 25 is attached to the shaped steel 11 by welding.

The side plates 26 shown in FIG. 6C are fixed to both side surfaces of the lining plate main body 12 by welding, and the outer surfaces of the outer shaped steel 11b are covered. The lining plates 27 are fixed to both end faces of the lining plate main body 12 by welding, and the end faces of the respective shaped steels 11 are covered. As shown in FIGS. 1 and 2, the outer peripheral surface of the lining plate main body 12 is subjected to a decorative finish treatment by the side plate 26 and the cover plate 27, respectively.

As shown in FIG. 3, when the length of the lining plate main body 12 is L and the width is W, the length L is about 4 m and the width W is about 1 m. Further, the length E of the mounting portions 20 provided at both ends of the lining plate main body 12 is about 61 cm. However, the length L of the lining plate main body 12 can be any length such as, for example, about 5 m by changing the length of the shaped steel 11. Further, the width W of the lining plate main body 12 can be made into various dimensions by changing the number of shaped steels 11.

Assuming that the thickness of the mounting portion 20 of the lining plate main body 12 is S and the thickness of the region between the mounting portions 20, that is, the region inside the stepped portions 15a at both ends is T, the thickness S is about 20 cm, and the thickness T. Is about 25 cm. The thickness S of the mounting portion 20 is the same as the thickness of a standard lining plate having a uniform thickness over the entire length, that is, the thickness of the standard product. On the other hand, the core portion of the lining plate 10 in the region other than the mounting portion 20, that is, between the step portions 15a at both ends, is formed to be thicker than the standard product.

As shown in FIG. 5, in the lining plate main body 11, the bottom plate 18 of the mounting portion 20 is abutted against the girder member 31 and mounted on the girder member 31. When a heavy construction machine is placed on the lining plate 10, the largest bending stress is applied to the central portion of the lining plate 10 in the length direction, but the trunk portion becomes thicker than the mounting portions 20 at both ends. Therefore, the lining plate 10 can sufficiently withstand heavy heavy machinery work. Moreover, since the thickness S of the mounting portions 20 at both ends of the lining plate 10 is set to be the same as the thickness of the standard product, the standard lining plate and the lining plate 10 (not shown) on the same girder 31 are used. Even if the standard product and the lining plate 10 are mixed together, a step does not occur between the surface of the standard product and the surface of the lining plate 10. Therefore, the construction machine and the civil engineering machine can smoothly run on the surface of the lining plate 10, and the workability of the construction work at the work site can be improved.

When the lining plate 10 is mounted on the girder member 31, the lining plate 10 is lifted and conveyed by a hanging machine such as a crane. Even when the lining plate 10 is removed from the girder member 31, it is lifted and transported by the hanging machine. As shown in FIGS. 1 and 3, engagement holes 35 for engaging the hooks of the hanging machine are provided at the four corners of the lining plate main body 12.

In order to prevent the lining plate 10 from shifting in the length direction with respect to the girder 31 when the lining plate 10 is installed on the girder 31, the four corners of the back surface of the bottom plate 18 are provided. As shown in FIG. 2, the deck piece 36 is detachably attached by the mounting bracket 37. When the lining plate 10 is arranged on the girder member 31, the deck piece 36 faces the side surface of the girder member 31 with a slight gap, and the lining plate 10 is prevented from slipping and moving.

A rubber pad 38 is attached to the end of the bottom plate 18, and when the lining plate 10 is installed on the girder material 31, the rubber pad 38 comes into contact with the surface of the girder material 31. As a result, noise is suppressed when a vehicle or a construction machine runs on the lining plate 10.

The back side portion of the mounting portion 20 of the side plate 26 is cut out, and the narrow portions 39 on the front side of both end portions extend to the end surface of the lining plate main body 12. The width V of each narrow portion 39 is set to a dimension narrower than the thickness S of the lining plate main body 12, and a communication gap 40 is formed between both ends of the side plate 26 and the bottom plate 18. There is. The communication gap 40 communicates the inside and the outside of the lining plate main body 12, and dust or the like that has entered the inside through the engagement hole 35 or the like can be discharged to the outside through the communication gap 40.

FIG. 10 is a perspective view showing a state in which a plurality of lining plates are attached to the girder material, and FIG. 11 is a perspective view showing the back side of FIG.

FIG. 10 shows a case where a lining plate 10 is used to cover an opening hole formed by excavation work from the ground surface to the ground in, for example, a subway work. The girder member 31 is supported by a girder support beam 32 extending in a direction perpendicular to the girder member 31. FIG. 10 shows a part of the girder member 31 and the girder support beam 32 at the construction site.

Two lining plate groups 41 and 42 are formed by four lining plates 10, and both lining plate groups 41 and 42 are arranged in series. Depending on the size of the opening, other lining plates may be arranged in series with the lining plates 41 and 42, and other lining plates may be arranged on both sides of the lining plates 41 and 42, respectively. 10 may be arranged.

Since the narrow portion 39 of each side plate 26 extends to both end faces of the lining plate 10, even if a plurality of lining plates 10 are arranged in parallel, the total length is between the adjacent lining plates 10. There is no gap over. As a result, the vehicle or the work vehicle can safely travel on the lining plate 10.

FIG. 12 is a perspective view showing a state in which two sets of lining plate groups 41 and 42 are displaced in the length direction and attached to the girder member 31, and FIG. 13 is a perspective view showing the back side of FIG.

In FIGS. 12 and 13, the ends of the girder members 31 are supported by the girder support beams 32 in a state of overlapping in the horizontal direction. Therefore, both ends of the lining plate 10 arranged on the girders 31 overlapping in the horizontal direction are mounted on the portions of the two girders 31. At this time, the deck piece 36 of the lining plate 10 is removed from the lining plate 10. In this way, both ends may be arranged at the overlapped portion of the girder member 31, so that the length of the mounting surface 17 at both ends, that is, the long side direction of the lining plate body 12, as shown in FIG. The length E of the mounting portion 20 in the above is set to 1.5 times the width dimension of the girder member 31. Thereby, the lining plate 10 can be used in various arrangement patterns.

As described above, the invention made by the inventor has been specifically described based on the embodiments, but the embodiments disclosed in the present specification are exemplary in all respects and are limited to the disclosed technology. It is not something that will be done. That is, the technical scope of the present invention is not limitedly interpreted based on the description in the above-described embodiment, but should be interpreted in accordance with the description of the scope of claims. All changes are included as long as they do not deviate from the stated technology and the equivalent technology and the gist of the claims.

For example, the lining plate 10 of the present invention is applied not only to cover an opening on the ground surface of an underground space, but also to cover an opening of a temporary gantry or a reinforced concrete building constructed at a construction site. Can be done.

The lining plate of the present invention can be applied to cover an opening on the ground surface of an underground space when constructing an underground structure.

10 lining plate 11 shaped steel 12 lining plate main body 13, 14 flange 15 web 16 notch 17 mounting surface 18 bottom plate 19 slit 20 mounting part 21 to 25 stiffener plate 26 side plate 27 lining plate 31 girder 35 engagement hole 36 Deck piece 37 Mounting bracket 38 Rubber pad 39 Narrow part

Claims (4)

A rectangular lining plate body formed by arranging a plurality of shaped steels having parallel front and back flanges and an integral web on the front and back flanges in parallel.
A mounting surface formed on the web by cutting out the back sides of both ends of the lining plate body.
It has a bottom plate fixed to the mounting surface and forming a mounting portion to be mounted on the girder at both ends of the lining plate main body.
The lining plate is characterized in that the thickness of the mounting portion is made to correspond to the thickness of the standard lining plate having a uniform thickness over the entire length, and the thickness of the region between the mounting portions is made thicker than the mounting portion. .. A slit to be inserted into the web is provided in the bottom plate, and the bottom plate and the web are fixed at the slit portion.
The lining plate according to claim 1, wherein the lining plate is characterized by the above. The length of the mounting portion in the long side direction of the lining plate main body was set to at least 1.5 times the width dimension of the girder material.
The lining plate according to claim 1 or 2, wherein the lining plate is characterized by the above. Side plates were attached to both side surfaces of the lining plate main body, and a communication gap was provided between both ends of the side plate and the bottom plate to communicate the inside and the outside of the lining plate main body.
The lining plate according to any one of claims 1 to 3, wherein the lining plate is characterized by the above.

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