TWI518230B - Lining plate - Google Patents

Description

Liner

The present invention is mainly directed to a lining plate constructed by joining H-section steels for use in the field of civil engineering construction.

When the lining is used for underground work such as an urban area, a floor is installed to secure traffic above the work space, and a floor is installed. Fig. 9 shows an example of the lining plate. The lining plate is arranged such that a plurality of H-shaped steels 1 are arranged side by side to weld the flange end portion 4, and after the side plate 3 is attached, it is configured to have a flat rectangular shape with a thickness and by a transverse rib ( Cross rib) 13 and strengthened.

In general, as a function of the lining, (1) load resistance and durability against the passage of the vehicle, (2) surface friction resistance for generating propulsion by the tire of the vehicle, and (3) reduction of vehicle traffic. In order to satisfy the function of the above (1), the size of the H-shaped steel used as the member, the size of the welded portion, and the size of the side plate or the lateral rib are specified in the steel liner.

Patent Document 1 describes a lining plate in which a projection shape is provided on the outer surface of the flange portion of the H-shaped steel constituting the lining, and a rubber material having air bubbles inside is attached to the back surface thereof to have an anti-vibration function and a sound absorbing function. The back material and the functions of (2) and (3) above are satisfied. As shown in Fig. 8, the shape of the projection 21 on the outer surface of the flange portion of the H-section steel is a lattice-like shape in the longitudinal direction of the H-shaped steel and the longitudinal direction of the H-shaped steel. Unlike rails with rails, etc., it is necessary to assume that the car advances in all directions, and thus the shape of the projections is set in such a manner that the sliding frictional resistance is effective in all directions.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 7-247506

[Patent Document 2] Japanese Patent Laid-Open No. 62-107802

However, in order to improve the sliding frictional resistance performance at the time of raining or to improve the level of noise and vibration countermeasures, surface coating is often applied to the surface protrusions by a resin material or a pitch material.

The lattice-shaped projection shape shown in Fig. 8 is considered to play an important role in fixing the surface coating layer. However, it is originally set on the premise of direct exposure, and it is not determined to be applied to the surface coating layer. In the prior art lattice-like projection shape, projections are formed in two directions, so that at least two types of calender rolls are required, and the number of rolling passes must be two or more. (Figure 7)

Accordingly, it is an object of the present invention to provide a lining plate having an outer surface protrusion shape which improves the fixing property of the surface coating layer and has a lower processing cost than previously.

The problem of the present invention can be achieved by the following means.

A lining plate in which a plurality of H-shaped steels having the same cross-sectional shape are aligned and connected in a height direction and a longitudinal direction of the outer surface of the flange, wherein the H-shaped steel is formed in a stripe shape in one direction on the outer surface of the flange. Protrusion.

2. A lining plate with flanges of a plurality of H-shaped steels having the same cross-sectional shape The height of the outer surface is aligned with the longitudinal direction, and the lining plate is characterized in that the H-shaped steel has a stripe-like projection formed on the outer surface of the flange in the longitudinal direction.

A lining plate in which a plurality of H-shaped steels having the same cross-sectional shape are formed by aligning the heights of the outer surface of the flange with the longitudinal direction, and the lining plate is characterized in that stripes are formed along the longitudinal direction of the outer surface of the flange. The H-shaped steel having the projections is alternately connected to the H-shaped steel having the stripe-like projections formed on the outer surface of the flange at right angles to the longitudinal direction.

A lining plate in which a plurality of H-shaped steels having the same cross-sectional shape are formed by aligning the heights of the outer surface of the flange with the longitudinal direction, and the lining plate is characterized in that stripes are formed on the outer surface of the flange along the longitudinal direction. The H-shaped steel of the protrusion is alternately connected to the H-shaped steel having no protrusion on the outer surface of the flange.

A lining plate obtained by aligning a plurality of H-shaped steels having the same cross-sectional shape with a height and a longitudinal direction of a flange outer surface, wherein the lining plate is characterized in that it is at right angles to the longitudinal direction of the outer surface of the flange The H-shaped steel in which the stripe-like projections are formed in the direction is alternately connected to the H-shaped steel having no protrusion on the outer surface of the flange.

6. The lining according to any one of 1 to 5, wherein a protrusion height of the strip-shaped protrusion on the outer surface of the flange of the H-shaped steel is 1.0 mm or more, and a ratio of the protrusion height to the protrusion interval is 0.07 or more and 0.2 under.

According to the present invention, it is possible to reduce the processing cost required for the formation of the projections by processing the lattice-like projections on the outer surface of the flange of the H-shaped steel, and thus it is possible to obtain the fixing property of the surface coating layer and the lattice-shaped projection shape. A liner that is equal or superior and inexpensive, and thus very useful in industry.

The lining plate of the present invention is characterized in that an H-shaped steel in which stripe-like projections are formed in one direction on the outer surface of the flange is used. Hereinafter, the present invention will be described in detail using the drawings.

Fig. 1 is a view for explaining a lining plate according to an example of the present invention, and Fig. 2 is a view for explaining an H-shaped steel used in the lining plate shown in Fig. 1. Figs. 1 and 2 each show an external view as seen from obliquely above.

The lining plate is formed by arranging a plurality of H-shaped steels 1 having the same cross-sectional shape with the height of the flange outer surface 11 in the longitudinal direction, and welding the end portions 4 of the adjacent flanges to each other. The H-shaped steel 1 which is the end of the lining plate has the side plate (plate-like member) 3 attached between the upper and lower flanges on the side which becomes the side surface of the lining. In the H-section steel 1, the longitudinal direction is the rolling direction, and the flange outer surface 11 of the H-section steel 1 has a stripe-like projection formed by processing a plurality of protrusions 21 at equal intervals in the longitudinal direction.

Fig. 3 is a view for explaining a stripe-like projection 21 in which the ratio of the projection height h to the projection interval P is h/P in order to secure the surface coating and to obtain the frictional force required for traveling of the vehicle. Provide for it.

According to the road bridge (specifications for highway The estimated frictional force (shear load) estimated from the T live load (large vehicle wheel load) used in bridges, bridges and elevated roads is 45kN in terms of test body width. (Sometimes referred to as the level of friction (45kN) produced by the T live load). In the present invention, as a performance target, a shear load of about 90 kN or more which is about twice the safety rate when the long-term supply is performed with respect to the above-described working friction level can be ensured, and the surface coating of the lining can be ensured. Fixation.

‧ Wheel load (T live load) 100kN (per wheel)

‧ Load 100kN × 1.4 = 140kN

Coefficient of friction on dry pavement (asphalt)

μ=0.8 or so

‧The frictional force = 140kN × 0.8 = 1212kN (per wheel)

‧Test body width is converted to 45kN

Test body width (200mm) / tire width (500mm) × 112 = 45kN

Table 1 shows the results of investigations on the influence of the protrusion height h and the protrusion interval P on the fixing strength of the surface coating. The test body was cut from a H-shaped steel having a stripe-like projection (the height of the projection was 0 mm to 2.5 mm, the projection interval was 10 mm, 0 ≦ h / P ≦ 0.25), and the surface portion was coated.

After the load jig is attached to each test body by a reactive acrylic strong adhesive (tensile shear strength of 24 N /mm ² or more), the surface coating fixing portion is fixed in a state where the vertical direction is restricted. The horizontal shear load is obtained by punching horizontally.

Fig. 6 shows the relationship between the ratio h/P of the protrusion height h and the protrusion interval P and the maximum horizontal shear load. If h/P is less than 0.07, the effect of the protrusion is insufficient, and the surface coating is smooth and sufficient fixation cannot be obtained. As a result, the shear endurance of about 90 kN or more which is a target performance cannot be achieved.

On the other hand, when h/P exceeds 0.2, shear damage of the surface coating itself occurs, and the fixing strength is not improved, so it is set to 0.07 ≦h/P ≦ 0.2. In order to ensure the fixing property of the surface coating layer, the protrusion height h is set to 1.0 mm or more in order to prevent the surface from adhering to dust even when the surface coating operation is performed.

The outer surface of the flange in which the strip-shaped projections are processed in the H-section steel is set to be two-sided or single-sided depending on the surface of the lining which must be surface-coated. In the flange outer surface 11 of the H-shaped steel 1, the strip-shaped projections in which the plurality of projections 21 are arranged at equal intervals in the longitudinal direction are vertical rollers which are provided with grooves at equal intervals in the circumferential direction of the roller during hot pressing. (For example, the U2 vertical roll 100 of Fig. 7) is processed.

The lining of the present invention is a shape along the outer surface of the flange of the H-shaped steel. Since the H-shaped steel has a stripe-shaped one-direction projection in the longitudinal direction, the processing cost required for the projection formation can be reduced as compared with the conventional lattice-like projection shape.

The most inexpensive method of forming protrusions at present is a method of simultaneously forming protrusions in the calendering of H-shaped steel (Patent Document 2). In the present invention, the projection shape is a one-direction projection, whereby the projection can be formed by one type of rolling rolls and the number of times of the number of rolling passes, and the manufacturing cost of the H-shaped steel can be reduced by about 10%.

Further, by forming the protrusion shape as a stripe-shaped one-direction protrusion, the number of defects of the protrusion is smaller than that of the previous protrusion shape (lattice shape), and the contact surface of the protrusion (steel material) and the surface coating material is increased, so that the surface The adhesion of the coating is improved.

The lining of the present invention can provide an excellent horizontal shear load even if the lining of the vehicle is disposed in parallel with the direction of the strip-like projections. However, it is more preferable to set in an orthogonal manner under bad conditions.

Fig. 4 is a perspective view showing an oblique upper side of a lining plate which has an H-shaped steel having a strip-shaped projection in the longitudinal direction of the H-shaped steel on the outer surface of the flange and an H-shaped steel having an orthogonal direction on the outer surface of the flange. Stripe-shaped H-shaped steels are alternately arranged. The protrusion height h of each H-shaped steel is 1.0 mm or more, and is set to 0.07 ≦h/P ≦ 0.2.

In the illustrated lining, an excellent horizontal shear load can be obtained regardless of the direction in which the vehicle travels, and thus it is suitable for intersections and the like. Here, in order to form the illustrated lining, two types of H-shaped steel are required. However, since the processing cost of each H-beam is higher than the previous protrusion shape (lattice shape) as described above Since it is inexpensive, it can be manufactured as a lining board at substantially the same cost as the lining of the previous protrusion shape (lattice shape).

Fig. 10 is a perspective view showing an obliquely upward appearance of a lining plate in which H-shaped steel having stripe-like projections in the longitudinal direction of the H-shaped steel on the outer surface of the flange and H-shaped steel having no protrusion on the outer surface of the flange are alternately arranged. The protrusion height h of the H-shaped steel having protrusions is 1.0 mm or more, and is set to 0.07 ≦h/P ≦ 0.2. The cost can be further reduced by locally using the non-protrusive H-beam. Since the surface coating layer of a resin-based material or a pitch material is an elastic material, if it has a protrusion locally on the surface of the lining, the fixing force can be transmitted without causing cracks or breakage, and thus such a structure is also possible.

Fig. 11 is a perspective view showing the oblique upper side of the lining plate in which the H-shaped steel having the strip-shaped projections having the H-shaped steel length orthogonal direction on the outer surface of the flange and the H-shaped steel having no protrusion on the outer surface of the flange are alternately arranged. to make. The protrusion height h of the H-shaped steel having protrusions is 1.0 mm or more, and is set to 0.07 ≦h/P ≦ 0.2. The cost can be further reduced by locally using the non-protrusive H-beam. Since the surface coating layer of a resin-based material or a pitch material is an elastic material, if it has a protrusion locally on the surface of the lining, the fixing force can be transmitted without causing cracks or breakage, and thus such a structure is also possible.

In addition, the figure up to the figure shows the structure which has the protrusion of the both upper and lower surfaces of the lining board, It is set as the structure which has the protrusion on the upper surface of the lining which becomes a vehicle passage surface.

[Example]

The test for confirming the fixing strength of the surface coating was carried out using H-shaped steel having different processing conditions on the outer surface of the flange. Table 2 shows the test body. Use first A test body of a protrusion shape (lattice-like protrusion) of the prior art, a test body of the shape (striped protrusion) of the present invention, and a test body having no protrusion as a reference.

Each test body was cut from a H-shaped steel having projections of various shapes by a length of 200 mm, and the surface portion was coated. The test was carried out by using a reactive propylene-based strong adhesive (tensile shear strength of 24 N /mm ² or more) on each test piece to fix the vertical direction after mounting the load jig. In the state, the surface coating fixing portion is horizontally punched. The height of the projections was set to 1.0 mm for both the lattice-like projections and the strip-shaped projections, and the lattice-like projections and the strip-shaped projections were all set to 10 mm in terms of the projection interval.

Figure 5 shows the relationship between the horizontal shear load and the amount of punching slip. The maximum shear load of the surface coating portion is the same as that in the shape of the present invention (striped protrusion) and the shape of the previous protrusion (lattice-like protrusion). However, the initial shear rigidity (represented by the amount of slip to obtain the maximum shear load) is significantly higher in the shape (striped protrusion) of the present invention than the shape of the protrusion of the prior art. In the shape of the present invention, the surface coating portion does not largely slide with the H-shaped steel, and it is confirmed that the fixing property of the surface coating layer is improved as compared with the shape of the protrusion of the prior art.

Further, in the case of the test body having the protrusion (the shape of the present invention (striped protrusion) and the protrusion shape (lattice protrusion) of the prior art), both are higher than the friction level (45 kN) generated according to the T live load. In contrast, the test body having no protrusion is lower than the friction level (45 kN) generated according to the T live load, and the fixing strength is insufficient.

1‧‧‧H-beam

2‧‧‧ lattice-like protrusions

3‧‧‧ side panels

4‧‧‧ End

5‧‧‧Humpless H-beam

11‧‧‧Flange outer surface

13‧‧‧ transverse ribs

21‧‧‧ Protrusion

100‧‧‧U2 vertical roller

200‧‧‧F vertical roll

H‧‧‧protrusion height

P‧‧‧protrusion interval

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing an obliquely upward plan view of a lining plate according to an example of the present invention.

Fig. 2 is a top plan view showing an oblique view of an H-shaped steel used in the lining plate shown in Fig. 1;

Fig. 3 is a view for explaining a stripe-like projection.

Fig. 4 is a top plan view showing the lining of the lining plate of another example of the present invention.

Fig. 5 is a view showing a relationship between a horizontal shear load and a punching slip amount.

Fig. 6 is a graph showing the relationship between the ratio h/P of the protrusion height h and the protrusion interval P and the maximum horizontal shear load.

Fig. 7 is a view for explaining a method of processing a lattice-shaped projection shape.

Fig. 8 is a view for explaining a shape of a lattice-shaped projection.

Figure 9 is a diagram illustrating a lining.

Figure 10 is a plan view showing the slanting plate of another example of the present invention Appearance map.

Fig. 11 is a perspective top plan view showing a lining plate of another example of the present invention.

1‧‧‧H-beam

21‧‧‧ Protrusion

H‧‧‧protrusion height

P‧‧‧protrusion interval

Claims (5)

A lining plate is formed by arranging a plurality of H-shaped steels having the same cross-sectional shape except for the strip-shaped projections at a height and a longitudinal direction of the outer surface of the flange, wherein the lining plate is at least a part of the above-mentioned H The flange outer surface of the steel strip having the stripe-like projections is surface-coated, and the lining plate is characterized in that the H-shaped steel has a stripe-like projection formed in one direction on the outer surface of the flange, and the flange of the H-shaped steel The protrusion height of the stripe-shaped protrusions on the outer surface is 1.0 mm or more and 2.5 mm or less, and the ratio of the protrusion height to the protrusion interval is 0.07 or more and 0.2 or less. A lining plate is formed by arranging a plurality of H-shaped steels having the same cross-sectional shape except for the strip-shaped projections at a height and a longitudinal direction of the outer surface of the flange, wherein the lining plate is at least a part of the above-mentioned H The outer surface of the flange of the steel strip having the stripe-like projections is surface-coated, and the lining plate is characterized in that the H-shaped steel has a stripe-like projection formed on the outer surface of the flange in the longitudinal direction, and the flange of the H-shaped steel. The protrusion height of the stripe-shaped protrusions on the outer surface is 1.0 mm or more and 2.5 mm or less, and the ratio of the protrusion height to the protrusion interval is 0.07 or more and 0.2 or less. A lining plate is formed by arranging a plurality of H-shaped steels having the same cross-sectional shape except for the strip-shaped projections at a height and a longitudinal direction of the outer surface of the flange, wherein the lining plate is at least a part of the above-mentioned H Steel profile The outer surface of the flange having the stripe-like projections is applied by surface coating, and the lining plate is characterized in that an H-shaped steel having stripe-like projections formed on the outer surface of the flange in the longitudinal direction is joined to the outer surface of the flange The H-shaped steel in which the strip-shaped projections are formed in the direction perpendicular to the longitudinal direction is alternately connected, and the projection height of the strip-shaped projections on the outer surface of the flange of the H-shaped steel is 1.0 mm or more and 2.5 mm or less, and the ratio of the projection height to the projection interval It is 0.07 or more and 0.2 or less. A lining plate is formed by arranging a plurality of H-shaped steels having the same cross-sectional shape except for the strip-shaped projections at a height and a longitudinal direction of the outer surface of the flange, wherein the lining plate is at least a part of the above-mentioned H The outer surface of the flange having the strip-like projections of the steel is surface-coated, and the lining is characterized in that the H-shaped steel having the stripe-like projections formed on the outer surface of the flange in the longitudinal direction is free from the outer surface of the flange. The projection H-shaped steel is alternately connected, and the projection height of the stripe-shaped projection on the outer surface of the flange of the H-shaped steel is 1.0 mm or more and 2.5 mm or less, and the ratio of the projection height to the projection interval is 0.07 or more and 0.2 or less. A lining plate is formed by arranging a plurality of H-shaped steels having the same cross-sectional shape except for the strip-shaped projections at a height and a longitudinal direction of the outer surface of the flange, wherein the lining plate is at least a part of the above-mentioned H The outer surface of the flange of the steel having the strip-like projections is surface-coated, and the lining is characterized in that the outer surface of the flange is formed at a right angle to the longitudinal direction. The H-shaped steel having the stripe-shaped projections is alternately connected to the H-shaped steel having no protrusion on the outer surface of the flange, and the protrusion height of the stripe-shaped projection on the outer surface of the flange of the H-shaped steel is 1.0 mm or more and 2.5 mm or less. The ratio of the protrusion intervals is 0.07 or more and 0.2 or less.