JP2543118Y2 - Groove welding type steel lining plate and grooved welding type steel lining plate with resin coating material - Google Patents

Description

[Detailed description of the invention]

[0001]

Industrial Applicability The present invention has irregularities on the outer surface of a flange, which is a main structural member, of a steel lining plate used for lining the road surface for various road surface excavation works or for attaching a slab to a pier. The dimension ranges d, g, i, and d shown in FIG.
The present invention relates to a steel lining plate and a steel lining plate with a resin coating material using a H-shaped steel with a groove at the tip of a flange, which has k and l linear chamfers and has irregularities on the outer surface of the flange.

[0002]

2. Description of the Related Art A steel lining plate or a steel lining plate with a resin coating material is used for lining of a road surface due to a road surface excavation work such as a subway work, a floor slab of an erection pier, and the like. Conventionally,
The main constituent members of this steel lining plate have grid-like irregularities 3 on the outer surfaces of flanges 1 and 2 shown in FIG.
However, a flat H-shaped steel is used. As shown in FIG. 10, the steel lining plate is a panel in which a plurality of H-shaped steels 5 having irregularities on the outer surface of a flange, which are main members, are arranged side by side and butt welded on the upper surface or upper and lower surfaces. The stiffener 7 and the side plate 8 are further provided in the H-shaped steel groove portion, and the cover plate 9 and other members are provided as covers for both end surfaces. This lining plate is used as it is, and in order to further prevent noise / vibration and slippage during running of the vehicle, a resin coating material 10 in which various resins and aggregates are kneaded is applied to the surface of the lining plate. There are coated lining boards, and these lining boards are used by laying them on the road surface according to various construction conditions.

The reason why the lattice-shaped irregularities 3 are provided on the outer surface of the flange of the H-section steel 5 which is a main member of the lining plate shown in FIG. 9 is as follows. That is, the coating material 1
In the case where the coating material 10 is used without applying the coating material 10 to prevent slippage of a vehicle or a pedestrian, and when the coating material 10 is applied to the portion, the unevenness 3 is caused by the surface layer of the coating material 10 and the H-shaped steel 5. It has an important role in improving the adhesion at the boundary between the parts.

[0004]

[Problems to be Solved by the Invention] FIG.
0 is a detailed view showing a cross section including a butt weld, in which a coating material is applied to the upper surface of the lining plate, 3 is a flange outer surface having H-shaped steel grid-like irregularities, 10 is a coating material, and 11 is a coating material. It is a weld (bead) by continuous welding. That is, since the front end of the flange is sharp and sharp, the weld bead is raised by e (hereinafter referred to as extra height) when welding is performed, and the film thickness m of the coating material at the welded portion is other than the welded portion. It becomes smaller by the extra height e with respect to the film thickness n of the coating material. However,
The coating portion of the welded portion has a lower resistance to the repeated impact force of the passing vehicle than the other coating portions, and FIG.
The cracks 12 due to the fatigue shown in (b) tend to occur and eventually become separated. In addition, when the coating material has a small thickness, rainwater reaches the H-type steel surface layer boundary surface quickly,
There is a disadvantage that the adhesion at the interface between the coating material and the surface layer of the H-shaped steel is hindered, and the coating material is easily peeled off. As a means for solving this drawback, there is a method of increasing the film thickness m of the coating material. However, the film thickness n becomes unnecessarily thick at most portions other than the welded portion 11, which increases the manufacturing cost and causes a problem. .

On the other hand, when the coating material is not applied to the upper surface of the lining plate, the welding bead surplus height forms a linear convex shape on the lining road surface, and thus the tire slip phenomenon during running of a bicycle or a motorcycle. In addition, there are traffic problems such as the pedestrians getting stuck at their feet.

In a conventional lining plate in which a plurality of H-section steels having irregularities on the outer surface of the flange are arranged in parallel and the upper or upper and lower flange ends are welded and joined, there is no groove at the flange end. The extra height e is large and has the above problem.

In order to solve the above problems, the present invention provides a conventional lining plate in which a plurality of H-section steels having irregularities on the outer surface of the flange are arranged in parallel and the upper or upper and lower flange tips are welded and joined. An object of the present invention is to provide a lining plate in which a groove is provided at the tip of a flange of an H-section steel having irregularities on the outer surface of the flange and welded and joined to reduce an extra height e of a weld bead.

[0008]

The gist of the present invention is as follows: (1) A straight chamfer of a dimension range d, g, i, k, l shown in FIG. A groove-welded steel cover comprising a plurality of H-shaped steels having a groove on the outer surface of the flange and having an uneven surface formed on the outer surface of the flange in parallel with each other in an I-shape. Work plate (2) Flange groove with irregularities on flange outer surface with linear chamfer of dimension range d, g, i, k, l shown in FIG. A steel lining with a groove-welded coating material, characterized in that a plurality of H-shaped steels in parallel with each other are arranged in parallel in an I-shape, and the joining surfaces provided with the grooves are welded together and a coating material is further provided on the upper surface. It is a board.

[0009]

The operation of the present invention will be described in detail below together with the operation.

FIG. 1 shows dimension ranges d, g, i, and d shown in FIG.
FIG. 4 is a perspective view of an H-shaped steel with a groove at the tip of a flange having k and l straight chamfers and having irregularities on the outer surface of the flange. That is, irregularities 3 are formed on the outer surface of the flange provided with a so-called groove 13 by chamfering the depth h in the Y-axis direction and the width W in the X-axis direction linearly at four locations outside the top, bottom, left and right flanges.
A grooved H-section steel having

When the upper and lower surfaces of a plurality of H-section steels are to be welded in parallel, the grooves 13 are provided at four locations outside the tips of the upper, lower, left and right flanges of the H-section steel, and only the upper surface is welded. In this case, the groove 13 may be provided at two places outside the tip of the H-shaped steel upper, lower, left and right flanges. However, even when welding is performed only on the upper surface, the groove 13 is provided at four places outside the tip of the H-shaped steel upper, lower, left and right flanges, so that the upper surface flange groove can be received and unloaded at a production factory and processed and assembled. Even when the application portion is not constant, the groove application portion always comes to the upper surface, so that the groove portion can be welded.

[0012] A flanged groove with a groove at the tip of the flange having irregularities on the outer surface of the flange with linear chamfers of dimensions d, g, i, k and l shown in FIG. As shown in FIG. 2, a plurality of the H-shaped steels are arranged side by side with the shape steel as a main constituent member, and the top end of the upper flange or the top end of the upper and lower flanges is continuously subjected to groove welding 14 in the length direction to cover the panel. Produce a work board. At this time, the groove depth h and the groove width w, which are the dimensions of the groove 13, are not infinitely selectable, and have a limited range in terms of welding technology and utilization technology.

Normally, the production of a lining plate is carried out under industrial conditions because welding is usually performed under constant welding conditions. FIG. 3 shows a groove with the same and constant welding conditions. The relationship between the groove area S when the dimension was changed and the extra height e of the weld bead after welding was obtained by a field experiment. The dimensions of the H-section steel used in this experiment are shown in FIG. 1, web height 190 (H) × flange width 197 (B) × web thickness 5 (t ₁ ) × flange recess thickness 7
(T ₂ ) × flange convex part thickness 9 (t ₃ ) mm, which is the main size for manufacturing a normal lining plate. In addition, welding of a groove or the like is an automatic carbon dioxide gas arc welding method that is industrially common and has a low production cost. FIG. 4 shows a proper weld bead shape, and is also a symbol explanatory diagram of the extra height e and the groove area S in FIG. 3, and the groove area S is represented by a groove depth h × a groove width w. , And serves as an index of the extra height e of the weld bead.
In FIG. 3, point a has no current groove (zero groove area).
The extra height e is shown, where e = 2.4 mm. The extra height decreases as the groove area increases.

In the figure, 16 vertical lines have a groove area S of 4.0.
Although it is a line of mm ² , the surplus height e is indicated by a point b at the lower limit line in application technology, and e = 1.6 mm. The reason for this is that after making a lining board with a coating material and laying it on site,
The lengthwise continuous welded portion 6 shown in FIG. 10 has been set based on the knowledge that is the limit of the presence or absence of the crack 12 after the target life has passed. On the other hand, the vertical line 17 has a groove area S = 1.
Although it is a line of 4 mm ² , it is the upper limit line in the welding technique, and the extra height e is indicated by the point c, and e = −0.2 mm. The reason will be described below.

FIG. 7 shows the state of the weld bead at the welded portion. FIG. 7A shows that when the groove area S is large, a wavy variation 2 due to an insufficient amount of welded bead in the length direction.
2 occurs and reduces the strength of the weld. In severe cases, the molten metal flows down and burn-through 23 occurs.
Similarly, in (b), when the groove area S is large, the edge of the weld bead does not fill the groove, the amount of welding is apparently insufficient, and a dent 24 is generated at the end, and this portion is a cause of stress concentration. And lower the strength of the weld.

On the other hand, the straight line 20 has a groove depth h of the minimum value 1.2.
This represents the groove width w with respect to the groove area S in the case of mm. Since this is also obtained by w = S / h, the maximum value of w is j
The point is 11.67 mm, and the minimum value is 3.33 mm at the k point. However, w on the side where the groove area S is large is 11.6 at the maximum.
As shown in (d) of FIG. 6, the end of the weld bead does not fill the groove due to a phenomenon similar to (b) as shown in (d) of FIG. 24 concave
And the problem that the extra height e is increased by the extent that the weld bead end is not filled with the groove is caused by additional experiments. The maximum value is corrected and set to 6 mm, and the point is indicated by l. A straight line 21 connects the point 1 and the point d, and a range between 1 and d is a change range of the groove depth h. The reason why the groove depth h = 1.2 mm is set to the maximum value is the same as that described with reference to FIG.

From the above, in the relationship between the groove width w and the groove depth h with respect to the appropriate groove area S shown in FIG. 5, the appropriate groove dimensions and h are the points d, g and i. , Point k, and point l.

FIG. 6 shows the range of the relationship between the groove depth h and the groove width w, which are appropriate groove dimensions in FIG. Point d in the figure, g
The point, the i point, the k point, and the l point correspond to the same symbols in FIG. 4, and an area surrounded by the d point, the g point, the i point, the k point, and the l point has an appropriate groove depth h, And the width of the groove width w. The numerical values of each point are as follows. That is, point d is h = 3.2 mm, w = 4.38 mm, and point g is h = 3.2 mm.
mm, w = 1.7 mm, point i is h = 2.35 mm, w =
1.7 mm, k point is h = 1.2 mm, w = 3.33 m
The points m and l are h = 1.22 mm and w = 6.0 mm.

A straight bevel having a dimension range d, g, i, k, l shown in FIG. In the type steel, the relationship between the groove area S when the dimension of the groove is changed and the weld bead extra height e after welding is determined by an experiment at a production plant, and the groove area S is groove depth h × groove. A relational expression that is represented by the width w and serves as an index of the extra height e of the weld bead has been confirmed.

Here, the extra height e of the weld bead
In the above, 1.6 mm in height of the welding margin of the upper limit line in application technology is the applicable upper limit range as a product. In addition, 1.6 mm of welding margin height of an upper limit line is based on the knowledge that it is the maximum value for preventing cracking of the coating material on the weld bead portion in the lining board with resin coating.

A groove depth h and a groove width w which are applicable ranges of the welding margin height e are selected, and a plurality of H-section steels having irregularities on a flange outer surface provided with a groove at a flange end are arranged in parallel. When the coating material is applied to the surface of the lining plate on which the groove welding joint 14 has been performed, a large film thickness m is ensured, the resistance to the impact of vehicle traffic is increased, and the effect of preventing the cracking of the coating material and the film thickness As m increases, the permeation resistance of rainwater also increases, and the effect of preventing separation at the interface between the coating material 10 and the H-section steel 5 at the surface layer is large. Here, as the coating material, for example, there is a coating material obtained by kneading an acrylic resin and a special aggregate such as ceramic.

When the coating material is not applied to the surface of the lining plate on which the groove welding connection 14 has been made, the surface of the lining plate on which the groove welding connection 14 has been made has a conventional welding height e, which is a conventional value. Since it is smaller, it is possible to solve problems in traffic such as a bicycle / motorcycle, a tire slip phenomenon during running, and a pedestrian's stepping on a foot.

The unevenness of the outer surface of the H-section steel flange plays a large role in preventing the separation between the coating material 10 and the H-section steel 5 at the interface between the coating layer and the H-section steel 5. In combination with the effect of preventing cracking and peeling, the effect of improving the service life of the lining plate with the coating material is high.
Further, the groove depth h and the groove width w, which are the applicable ranges of the weld height e, are maximum 3.2 mm to minimum 1.2 m.
m and the groove width w are a maximum of 6.0 mm to a minimum of 1.7 mm, and have been partially corrected.

[0024]

Next, the present invention is shown in FIG.
A steel lining plate and a steel lining with a resin coating material using an H-shaped steel with a flange end groove having a linear chamfer of dimensions d, g, i, k and l shown in FIG. The result of an example in which a board is prototyped and laid on a road surface will be described. The size of the H-section steel, which is a main component of the lining plate, is web height 190 (H) x flange width 197.
(B) × web thickness 5 (t ₁₎ × flange recess thickness 7
(T ₂ ) × Flange convex part thickness 2 mm, groove depth 2.5 (h), groove width 3.0 (w) m outside flange tip
The coating material 10 provided with a coating material 10 on the upper surface with a lining plate shown in FIG.
Two types of lining plates without 0 were produced. The continuous welding in the length direction of the top end portion of the upper flange shown in FIG. 8 was performed under welding conditions usually manufactured by an automatic carbon dioxide welding method.

As a result, the height e of the welding margin after the production of the lining plate was reduced to 1.2 mm from 2.7 mm without the groove, and a good lining plate having no welding defects was obtained. . Also,
When this lining plate was actually laid on a road surface, a coating material was applied to the continuous welding portion in the length direction of the top end of the top flange, and good cracking and peeling of the coating material did not occur. The result was obtained. In the case where the coating material was not applied, the tires were excellent without slipping of the tires during running of the bicycle or the motorcycle and no catching of the foot of the pedestrian.

[0026]

[Effects of the Invention] From the present invention, the production cost is increased when a coating material is applied to the surface of the lining plate by providing an appropriate groove outside the tip of the H-shaped steel flange having an irregular surface on the outer surface of the flange. Without doing so, it is possible to eliminate the cracking and peeling phenomena of the coating material and to improve the life of the lining plate. In addition, even when the coating material is not applied to the lining plate, since the extra weld height e is small,
This has made it possible to prevent the slip phenomenon of bicycles and motorcycles and to ensure the safety of traffic.

[Brief description of the drawings]

FIG. 1 is a perspective view of a grooved H-section steel having irregularities on the outer surface of a flange.

FIG. 2 is a perspective view of the groove-welded steel lining plate of the present invention.

FIG. 3 is an explanatory graph of a range of a groove area in a relationship between a groove area and an extra height of a grooved H-shaped steel used in the present invention.

FIG. 4 is an illustration of a symbol for an appropriate weld bead shape, illustrating FIG. 3;

FIG. 5 is an explanatory graph of an appropriate range of a groove depth and a groove width with respect to a groove area based on the groove area range of FIG. 3;

FIG. 6 is a graph showing a relationship between an appropriate groove depth and a groove width of an H-shaped steel with a groove used in the present invention.

FIGS. 7 (a), (b), (c), and (d) are explanatory diagrams of welding defects outside the proper ranges of FIGS. 3, 5, and 6. FIG.

8A is a sectional view of FIG. 2, and FIG. 8B is an enlarged sectional view of a portion B.

FIG. 9 is a perspective view of an H-section steel having irregularities on an outer surface of a flange used for a conventional lining plate.

FIG. 10 is a perspective view of a conventional steel lining plate.

11A is a cross-sectional view of FIG. 10, FIG. 11B is a cross-sectional view showing a state in which a crack has occurred in the coating material, and FIG.
FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Upper flange 2 ... Lower flange 3 ... Unevenness of flange outer surface 4 ... Flange end surface 5 ... H-shaped steel 6 ... Butt welded part 7 ... Stiffener 8 ... Side plate 9 ... Cover plate 10 ... Coating material 11 ... Welded part (bead) DESCRIPTION OF SYMBOLS 12 ... Crack 13 ... Groove 14 ... Groove welded part 15 ... H-shaped steel with groove 16 ... Lower limit line of groove area S 17 ... Upper limit line of groove area S 18 ... Groove depth h Maximum straight line 19 ... Lower limit line of groove width w 20 ... Minimum straight line of groove depth h 21 ... Upper limit line of groove width w 22 ... Waving variation due to insufficient bead welding 23 ... Blank 24: concave shape of weld bead end 25: unfilled weld bead

Claims (2)

(57) [Scope of request for utility model registration] 1. A dimension range d, g, i, k, l shown in FIG.
A plurality of H-shaped steels having a groove with a flange tip having irregularities on the outer surface of the flange provided with a straight chamfer in parallel with each other in an I-shape; Pre-welded steel lining plate. 2. A dimension range d, g, i, k, l shown in FIG.
In the state where a plurality of H-shaped steels with a flange tip having an unevenness on the outer surface of the flange provided with a linear chamfer are arranged side by side in an I-shape, the upper surface of the lining plate having a welded joint of the provided surfaces is provided. A steel lining plate with a groove welding type coating material, characterized by having a material layer.