JPH10152806A - Road surface lining board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the handling and strength of a road surface lining board to be used for the site of underground work, and to reduce the noise in traveling of a vehicle and the dislocation of the lining board, and also to enable safe traveling. SOLUTION: A main frame 1 is constituted by erecting side plates and end plates 1c around a bottom plate. Longitudinal beams and transverse beams are provided along the undersurface of the bottom plate of the main frame 1. A plurality of dowels 4 are arranged on the bottom plate of the main frame 1 at intervals. Reinforcing steel members such as principal bars 5 and arrangement bars 6 are arranged inside the main frame 1. At both end hollow spaces of the longitudinal beams, L-shaped sectional chambers 15 consisting of an end sectional chamber part 15a and a side sectional chamber part 15b which are extended along the corner are provided. Openings 16 for communicating the sectional chamber 15 with the inside of the main frame 1 are formed, and expansive concrete is placed inside the main frame 1 and the sectional chambers 15, and then it is hardened and cured. A stopper engaging with the horizontal beams is fitted in the lower position of the side sectional chamber part 15a constituting the sectional chamber 15 through protective plates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface lining plate suitable for use when temporarily forming a road surface after excavating a road, for example, when performing underground work such as a subway or an underpass. It is.

[0002]

2. Description of the Related Art When performing various underground works under a road, if the work cannot be maintained as a road due to the work reaching just below a road surface, the road itself is also excavated and excavated. After removal, the method of assembling columns and girders using H-section steel, etc., and placing a so-called lining plate such as a flat iron plate or concrete plate on it to form a temporary road surface is generally widely used. Has been adopted.

[0003]

However, this type of lining plate is mounted on a girder as described above and serves as a temporary road surface until the completion of construction, and is transported, laid, removed or relocated. Since such operations are frequently performed, they must be extremely strong and sufficiently lightweight. From the point of view of the construction environment, care should be taken not to cause any inconvenience to the workers and nearby residents. In consideration of the following points, the conventional lining plate using a flat iron plate has a problem that large noise and slippage occur when the vehicle is traveling, and the lining plate using the slab plate is relatively In addition to the heavy weight, there is a problem in strength, and there is also a problem that cracks and the like are easily generated.
In addition, in the case of this lining plate, there is a risk that a gap occurs between the lining plates due to the vehicle running and being rotated while being dragged.

The present invention has been made in view of the above circumstances, and enables a vehicle to travel safely, has low noise, is excellent in handleability and strength, and furthermore, has a road surface cover with little deviation due to the traveling of the vehicle. It is intended to provide a plate.

[0005]

In order to achieve the above object, a road lining plate according to claim 1 is installed on a girder bridged over an underground construction site, and temporarily mounted on the construction site. A road surface lining plate for securing a road surface, wherein a pair of side plates and an end plate are erected around a bottom plate to form a flat box-shaped upper surface opening, and along a bottom plate lower surface of the body frame. A hollow box-shaped vertical girder and horizontal girder extending horizontally and vertically of the main body frame, and a plurality of dowels arranged at intervals on a bottom plate of the main body frame,
Reinforcement steel materials such as main bars and force bars arranged in the main body frame, and end partition chamber portions extending along the corners of the main body frame at hollow portions at both ends of the stringer. An L-shaped compartment composed of side compartments, an opening formed in the bottom plate and communicating between the compartment and the main body frame, and concrete cast in the main body frame and the compartment. It is characterized by being constituted.

According to a second aspect of the present invention, there is provided the road surface lining plate according to the first aspect, wherein:
A stopper is provided for engaging with the spar. According to a third aspect of the present invention, there is provided a road surface lining plate according to the first or second aspect, wherein an expansive concrete containing an expanding agent is used as the concrete.

[0007] The road surface lining plate according to the fourth aspect is the first aspect of the invention.
3. The road surface lining plate according to claim 1, wherein the dowel is formed by cutting and raising the dowel upward from the bottom plate. According to a fifth aspect of the present invention, there is provided a road surface lining plate according to the fourth aspect, wherein the dowel is formed to have a shape gradually widened as the distance from the bottom plate increases.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a road lining plate according to an embodiment of the present invention. FIG. 1 is a plan view of the entire road surface lining plate before concrete placement, and FIG. 2 is a partial cross-sectional side view after concrete placement. In these figures, the reference numeral 1 denotes a main body frame. , 2 and 3 are vertical and horizontal columns. The main body frame 1 is formed in a flat rectangular box shape whose upper surface is opened by a bottom plate 1a, both side plates 1b, and both end plates 1c, and a plurality of dowels 4 are provided on the bottom plate 1a in a suitable manner in the vertical and horizontal directions of the bottom plate 1a. They are arranged at intervals.

In the example of the embodiment shown in FIG. 1, a so-called cut-and-raise type bevel is shown as each of the bevels 4. It is bent. Further, in the main body frame 1, necessary reinforcing steel materials such as the main reinforcing bar 5, the distribution bar 6, and the like are arranged in a lattice shape. The upper edges of both side plates 1b and both end plates 1c of the main body frame 1 are formed by bending approximately 90 ° inward, respectively, so as to form horizontal strip-shaped edge plates 1b ', 1b.
c 'are formed respectively, and these edge plate portions 1b',
The portion 1c 'is fixed to the bottom plate 1a via swash plates 7 intermittently arranged along the edge plate portions 1b' and 1c '(fixed by welding both ends of the swash plate 7). .

As shown in FIGS. 3 and 4, the stringer 2 is formed in a hollow box shape, and is formed on the lower surface of the main frame 1, that is, along the lower surface of the bottom plate 1a in the longitudinal direction of the main frame 1. Two are provided so as to extend parallel to each other in the (vertical direction). A hollow box-shaped horizontal girder 3 is also provided between the vertical girder 2 and the lower surface of the bottom plate 1a.
A total of seven are provided so as to extend in the inter-direction (lateral direction). Both the vertical girder 2 and the horizontal girder 3 at both ends are provided at positions slightly inward on the lower surface of the main body frame 1. Each of the horizontal beams 3 is formed to have a height smaller than that of the vertical beams 2.

A rubber plate 9 mounted on one side of an upper surface of a horizontal girder 8 made of H-section steel or the like is attached to a lower surface of both ends of the vertical girder 2 via a sole plate 10. Further, on the lower surface near both ends of the vertical girder 2, as shown in FIG. 2, the lining plate itself is displaced in the direction of the horizontal girder 8 in a state where the lining plate itself is inserted between the adjacent horizontal girder 8. Stoppers 11 are provided to prevent this. In the illustrated example, the stopper 11 is mounted by cutting a channel steel or the like into an appropriate length and welding the lower surface of the girder 2 to the lower surface of the stringer 2 via a protection plate 12. Each of the stoppers 11 is attached to a position closer to the outside in the width direction of the longitudinal girder 2 for the reason described later.

On the other hand, hanging hooks 13 are provided at the center in the width direction near both ends in the longitudinal direction of the main body frame 1, respectively. Also, the hollow portions at both ends of the two vertical beams 2 are shown in FIG.
As shown in the figure, the partition wall 14 is formed in each of the L-shaped compartments 15. Furthermore, each of these compartments 15
As shown in FIG. 1, the upper bottom plate 1a is provided with L-shaped openings 16 (two illustrated in the figure) which are cut out in a form corresponding to the planar shape of the compartments 15. The interior and the compartment 15 are designed to communicate with each other. The compartments 15 extend along the corners below the main body frame 1, respectively. The compartments 15 include an end compartment 15 a along the end of the main body frame 1 and a side portion of the main body frame 1. It is configured in an L-shape including a side compartment 15b along the side. The stopper 11 is provided in the compartment 1
5 is attached via a protection plate 12 to the lower side of the side compartment 15b that constitutes 5. The bottom plate 1a on the cross beam 3 located at the center is also provided with an opening 17 for communicating the inside of the cross beam 3 with the inside of the main body frame 1. In addition,
In FIG. 1, reference numeral 31 denotes a tape for closing a hole of the bottom plate 1a formed by cutting and raising the dowel 4, and reference numeral 32 in FIG. It is a rib.

Each of the compartments 15 and the central horizontal beam 3
The expansive concrete C containing an expansive agent is cast from each of the openings 16 and 17, and the expansive concrete C is similarly cast into the main body frame 1. The expansive concrete C is a concrete having a property of hardening while expanding due to the action of an expansive agent. As an expansive agent suitable for imparting this property, for example, Denka CS
A, Asanojibukaru (all are trade names) and the like.

In the road surface lining plate constructed as described above, the expansive concrete C cast in the main body frame 1, the compartments 15, and the center cross beam 3 must be cured until it is hardened. However, due to the restraining action of the main body frame 1, the concrete C is subjected to a compressive action, and as a result, the so-called prestress is substantially introduced into the hardened concrete C. Becomes Therefore, the road surface lining plate having the concrete layer in such a state is extremely durable and hardly generates cracks and the like.

Here, the reinforcing steel materials such as the dowels 4, the main bars 5, the distribution bars 6, etc. on the bottom plate 1a not only function to simply reinforce and bond the concrete C, but also resist expansion action until the concrete C hardens. And the concrete C is restrained by the restraining action from the outside of the body frame 1.
In other words, the effect of effectively introducing prestress into the skin is exhibited. Further, the concrete C in the main body frame 1 is hardened integrally with the concrete C in each of the compartments 15 and the central girder 3. Due to these effects, the road lining plate after hardening of the concrete C becomes extremely strong due to the added strength of both the vertical girder 2 and the horizontal girder 3.

Further, since most of the vertical girder 2 and the horizontal girder 3 are hollow, they are relatively lightweight and easy to handle, thereby facilitating operations such as transportation, laying, removing or relocating. In addition, since the road surface lining plate according to the illustrated example is mainly composed of concrete C, noise and vehicle slippage are unlikely to occur as in a general road surface. Since the concrete C is cast in each compartment 15 and is integrated with the concrete C in the main body frame 1, the portion immediately below each compartment 15 is a horizontal girder 8 as shown in FIG. Even if a live load is applied to the lining plate in a state where it is placed on top, it exhibits sufficient strength to withstand this. Further, since the stopper 11 is welded to the lower surface of the stringer 2, there is no possibility that the stopper 11 is unnecessarily dropped due to corrosion or the like.

The compartment 15 into which the concrete C is cast has an L-shape composed of an end compartment 15a and a side compartment 15b extending along the corner of the main frame 1. The road surface lining plate is transported, laid or moved, and even if the corner is hit during handling, the damage to the corner can be significantly reduced, and the vehicle It is possible to eliminate distortion or the like of a corner portion to which a particularly large force is applied during traveling. Moreover, below the side compartment 15b, that is, near the side of the bottom plate 1a,
Since the stopper 11 that engages with the horizontal girder 8 is provided, it is possible to reliably prevent the road surface lining plate from being displaced particularly in the direction of rotation during traveling of the vehicle.

In addition, since expansive concrete is used as the concrete C to be cast, prestress is introduced into the concrete C that has been cast and hardened and cured.
Even in severe use as a lining plate, an excellent effect of sufficiently withstanding cracks and the like can be achieved without generating cracks and the like. The plurality of dowels 4 are simply the bottom plate 1
Since it is formed by cutting and raising a, the manufacturing cost can be significantly reduced as compared with a case where a plurality of separate dowels are provided on the bottom plate 1a by welding or the like. In addition, since the vertical girder 2 and the horizontal girder 3 at both ends are arranged slightly inward from the side and end surfaces of the main body frame 1, the horizontal girder 8
Any one of the plurality of lining plates arranged above can be easily taken out, whereby the lining plate can be easily laid, removed and relocated.

As shown in FIG. 5, the dowels 4 formed on the bottom plate 1a of the main body frame 1 have a shape that gradually widens as the distance from the bottom plate 1a increases. Properties can be further improved, and a lining plate in which the bottom plate 1a and the concrete C are further firmly integrated can be obtained.
In addition, it is possible to eliminate the necessity of bending the tip portion in order to improve the biting property with the concrete C, and it is possible to reduce the number of processing steps and reduce the manufacturing cost. Note that the size of the lining plate is not limited to the above, and for example, when the length in the longitudinal direction is changed, the number of the cross beams 3 is naturally changed accordingly. .

[0020]

As described above, according to the road surface lining plate of the present invention, the following effects can be obtained. According to the road surface lining plate according to claim 1, a pair of side plates and an end plate are erected around the bottom plate to form a flat box-shaped upper surface opening, and the lower surface of the bottom plate of the main body frame has A hollow box-shaped vertical girder and horizontal girder extending vertically and horizontally along the main body frame, a plurality of dowels arranged at intervals on a bottom plate of the main body frame, and reinforcing bars arranged in the main body frame. Reinforced steel materials such as main bars and distribution bars,
L-shaped compartments extending along the corners of the main body frame at the hollow portions at both ends of the longitudinal girder, and openings formed in the bottom plate for communicating the compartments with the inside of the main body frame. , And concrete cast in the main body frame and the compartment, so that the overall structure is very strong,
In addition, it can be made sufficiently light, which makes it easy to carry, lay, remove or relocate,
In addition, since the upper surface serving as the road surface is formed of concrete, slip and noise are less likely to occur, and cracks and the like do not occur even in severe use as a lining plate. It works. Moreover,
Since the compartment in which the concrete is poured is L-shaped extending along the corner of the main body frame and has a high strength, the corner is formed when transporting, laying or relocating the road surface lining plate. Even when the vehicle is hit, it is possible to greatly reduce the damage to the corners and to eliminate the distortion of the corners to which a particularly large force is applied during running of the vehicle.

According to the second aspect of the present invention, since the stopper which engages with the spar is provided below the side compartment, that is, near the side of the bottom plate, the road lining plate is provided when the vehicle is running. It is possible to reliably prevent the plate from shifting particularly in the rotating direction. According to the road surface lining plate according to the third aspect, since expansive concrete is used as the concrete to be laid, as a result of the prestress being introduced into the hardened and cured concrete that has been laid, the resulting lining plate has Even under severe use, there is an excellent effect that cracks or the like can be sufficiently prevented without generating cracks or the like.

According to the road surface lining plate of the fourth aspect, since a plurality of dowels are formed by simply cutting and raising the bottom plate, it can be compared with a case where a plurality of separate dowels are provided on the bottom plate by welding or the like. Thus, the manufacturing cost can be significantly reduced. According to the road surface lining plate of the fifth aspect, the width is gradually widened as the distance from the bottom plate increases, so that the dough of the dowel to the concrete can be enhanced, and the bottom plate and the concrete can be further firmly integrated. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view of a road surface lining plate for explaining a configuration and a structure of a road surface lining plate according to an embodiment of the present invention.

FIG. 2 is a side view showing a cross section of a part of the road lining plate for explaining a configuration and a structure of the road lining plate according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along the line AA in FIG. 2, illustrating a configuration and a structure of the road surface lining plate according to the embodiment of the present invention.

FIG. 4 is a front view showing a cross section of a part of the road surface lining plate for explaining the configuration and structure of the road surface lining plate according to the embodiment of the present invention.

FIG. 5 is a perspective view of a part of a bottom plate for explaining another example of the dowel formed on the bottom plate constituting the road surface lining plate according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body frame 1a Bottom plate 1b Side plate 1c End plate 2 Vertical girder 3 Horizontal girder 4 Dowel 8 Horizontal girder 5 Main girder 6 Distributor 11 Stopper 15 Division room 15a End division room part 15b Side division room part 16 Opening C concrete

Claims (5)

[Claims] 1. A road lining plate installed on a girder bridged over an underground construction site to secure a temporary road surface on the construction site, wherein a pair of side plates and an end plate are provided around a bottom plate. A main body frame that is erected and formed in a flat box shape with an upper surface opening; a hollow box-shaped vertical girder and a horizontal girder extending vertically and horizontally along the lower surface of a bottom plate of the main body frame; A plurality of dowels arranged at intervals on the bottom plate, reinforcing steel materials such as main bars and force bars arranged in the main body frame, and An L-shaped compartment formed by an end compartment and a side compartment extending along a corner of the body frame, and formed in the bottom plate to communicate the compartment with the inside of the body frame. A road surface lining plate comprising an opening and concrete poured into the main body frame and the compartment. 2. A road surface lining plate according to claim 1, wherein a stopper is provided below said side compartment to engage with said spar. 3. The road surface lining plate according to claim 1, wherein an expansive concrete containing an expansive agent is used as the concrete. 4. The road surface lining plate according to claim 1, wherein the dowel is formed by cutting and raising the bottom from the bottom plate. 5. The road surface lining plate according to claim 4, wherein the dowel is formed in a shape that is gradually widened as being away from the bottom plate.