JP3865875B2 - Asphalt mat - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an asphalt mat used in, for example, the ocean.
[0002]
[Prior art]
Conventionally, asphalt mats used in the ocean, for example, the bottom of the installation structure is used for scouring prevention so that it is not dug by waves, or when the caisson is submerged in water, it is stable In order to obtain the installation state, it may be used as an anti-sliding material, and in particular, the asphalt mat for anti-sliding is attached to the bottom of the caisson.
[0003]
The asphalt mat has the same size as the bottom of the caisson, and some of the large asphalt mats have vertical and horizontal dimensions exceeding 10 m.
[0004]
[Problems to be solved by the invention]
Asphalt mats and caissons are built on floating dogs. However, from the viewpoint of cost, it is desired to shorten the usage time in order to make the usage fee of floating dogs as low as possible.
[0005]
For this purpose, as shown in FIG. 13, an asphalt mat 105 having a wire mesh / rebar (not shown) as a reinforcing member embedded in the asphalt mastic 101 and a hook 103 for suspension at both ends is provided. Are assembled in advance at a different location and divided into sizes that can be transported to a truck or the like.
[0006]
Asphalt mat 105 carried by a truck or the like is configured such that hanging tool 107 is hooked on hook 103 and lifted by crane 109 and laid on a floating dog as shown in FIG. When it is lifted by, it bends greatly with its own weight.
[0007]
For this reason, if the asphalt mats 105 are arranged without gaps, it is difficult to align the ends, and depending on the feeling, joints 111 are formed as shown in FIG. The joint 111 can be eliminated by filling with blown asphalt, but it is desirable that the gap is as small as possible from the viewpoint of workability.
[0008]
Further, when the caisson is made of a concrete plate, the concrete is poured from above the asphalt mat 105, so that the asphalt mat 105 is laid in advance in the caisson outer form 113 as shown by the phantom line in FIG. At this time, aside from the central portion, there is a problem that the hanging tool 107 hits the outer caisson mold 113 in the end region close to the mold, and it is difficult to lay the asphalt mat 105 by the hanging means.
[0009]
Therefore, an object of the present invention is to provide an asphalt mat that can be suspended in a substantially horizontal state.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, firstly, an asphalt mastic formed to a predetermined thickness is embedded in at least the asphalt mastic and has a reinforcing reinforcing bar having a support leg , and the upper side along the reinforcing bar is A plurality of opened openings are provided, and a reinforcing reinforcing bar is provided with an exposed hanging part that faces the inside of the opening without protruding upward from the opening .
[0011]
Second, in the asphalt mastic formed in a predetermined thickness, provided with reinforcing bars for reinforced with a support leg, the reinforcing bars for the reinforcement, providing a hook member which is exposed to project from the upper asphalt mastic.
[0013]
And as a preferred embodiment, the hanging portion is formed integrally with the reinforcing bar or separated from the reinforcing bar.
[0014]
According to the asphalt mat, since the hook member is in an exposed state, it will be able to hung a sling crane Te direct hook, becomes very preferable in view of workability. In addition, since the asphalt mat is suspended in a substantially horizontal state, the end portions of the asphalt mat can be easily aligned and can be laid without gaps .
[0016]
Further, since the reinforcing bars are positioned at a predetermined height when the reinforcing bars are set in the mold, the reinforcing bars can be embedded at an accurate position in the asphalt mat.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to FIGS. 1 to 8.
[0018]
FIG. 1 shows an asphalt mat. In the asphalt mat 1, a lattice-like wire net 5 and a reinforcing bar 7 are respectively embedded in an asphalt mastic 3. In some cases, a reinforcing material such as a glass cloth is buried outside.
[0019]
The reinforcing bars 7 are arranged at predetermined intervals in the vertical and horizontal directions, and the cross portions are integrally fixed by binding wires.
[0020]
The reinforcing bars 7 arranged laterally (in the left-right direction in FIG. 1) are provided with hanging portions 9 formed at predetermined intervals, support legs 13 and 14 for maintaining the reinforcing bars 7 at a predetermined height , and caisson main body 15 Bonded iron wires 19 that are coupled to the reinforcing bars 17 are provided.
[0021]
The suspending portion 9 has a shape that is continuous with the rebar 7 by bending the rebar 7 upward in a U shape, and is formed on the top surface of the asphalt mastic 3 as shown in FIG. It has an exposed structure facing the inside of the opening without protruding upward from the opening 21.
[0022]
As shown in FIG. 3, the support legs 13, 14 are located at the lower left and lower right so that the reinforcing bar 7 is positioned at a predetermined height between the hanging part 9 and the hanging part 29 with both legs open. By bending in a U shape in this order, the shape is continuous with the reinforcing bar 7.
[0023]
The combined iron wire 19 is a so-called annealed iron wire that can be bent freely by hand, and is provided so as to protrude from between the support leg portion 13 and the support leg portion 14 and above each asphalt mastic 3 from each suspension portion 9. ing.
[0024]
Next, how to make the asphalt mat 1 will be described. As shown in FIG. 5, a plurality of reinforcing bars 7 having the hanging portions 9 that are long in the left-right direction are arranged in the asphalt mold 23. At this time, since the reinforcing bars 7 are positioned at a predetermined height by the support legs 13 and 14, next, vertical reinforcing bars are arranged so as to cross the reinforcing bars 7, and the reinforcing bars arranged vertically and horizontally are arranged. Bundling the cross part with a binding wire.
[0025]
Next, the lattice-shaped wire mesh 5 is set from above and set so that the hanging portion 9 protrudes from the mesh of the mesh, and is bound to the reinforcing bar 7 with a binding wire.
[0026]
Next, the combined iron wire 19 connected to the reinforcing bar 7 between the support leg portion 13 and the support leg portion 14 is raised upward, and is driven to the lower half by the asphalt mastic 3.
[0027]
Next, as shown in FIG. 6, a cylindrical tube 25 called a void is placed on the hanging portion 9 and fixedly supported. In this case, the cylindrical tube 25 may be fixed and set in advance before placing the asphalt mastic 3. Subsequently, the remaining upper half is driven by the asphalt mastic 3, and after a certain time, the cylindrical tube 25 is removed so that the exposed suspended portion 9 faces the opening 21 as shown in FIG. 1 is obtained.
[0028]
The asphalt mat 1 thus configured is transported while being stacked on a truck or the like. At this time, since the suspending portion 9 does not protrude from the opening portion 21, it can be stacked without any trouble, and if the connecting iron wire 19 is bent sideways, there is no trouble in the stacking.
[0029]
Next, as shown in FIG. 7, when the lifting tool 27 is hooked on the hanging portion 9 and lifted by the crane 29, the asphalt mat 1 is suspended in a substantially horizontal state. As a result, alignment becomes easy, and it is correctly laid out as shown in FIG.
[0030]
Moreover, it becomes possible to lay along the mold without hitting the mold.
[0031]
After laying is completed, the connecting iron wire 19 is connected to the hanging portion 9 as shown in FIG. Thereby, it becomes possible to couple | bond each connection iron wire 19 with the predetermined space | interval with respect to the reinforcing bar 17 used as the caisson main body 15 before placing concrete.
[0032]
In addition, although the suspending part 9 has a shape that is continuous with the reinforcing bar 7, the hanging part 9 may be formed as a separate member and retrofitted to the reinforcing bar 7 as shown in FIG. 9.
[0033]
Or as shown in FIG. 10, it is good also as a means which welds the member which served as the suspension part 9 and the support leg part 13 with respect to the straight reinforcing bar 7 integrally.
[0034]
FIG. 11 shows another embodiment.
[0035]
That is, it is an asphalt mat 1 the lower portion 9 is exposed to protrude from the asphalt mastic 3 upward hanging.
[0036]
In this case, the hanging part 9 may have a shape that is continuous with the reinforcing bar 7, or may be a separate member as shown in FIG. The other components are the same as those in FIG. 1, and thus the same reference numerals are used and detailed description thereof is omitted.
[0037]
Therefore, according to this embodiment, the asphalt mat 1 can be supported in a substantially horizontal state by the hanging portion 9. The end portions of the asphalt mat 1 can be easily aligned and correctly laid out.
[0038]
On the other hand, since it is not necessary to make the opening 21, the opening manufacturing step can be omitted, which is very preferable in terms of workability. In the case of this embodiment, as shown by the phantom line, it can be stacked and transported by using the intermediate finishing plate 31.
[0039]
In addition, in this embodiment, the asphalt mat for preventing sliding that is attached to the bottom of the caisson has been described, but the bottom of the structure submerged in the sea is prevented from being scraped by waves. It can also be used as an asphalt mat for use. In addition, although not shown in the figure, a reinforcing member is formed by embedding reinforcing bars framed in a lattice shape in an asphalt mastic formed to a predetermined thickness, and a hanging part formed of a separate member is provided on the reinforcing bar. It may be an asphalt mat.
[0040]
【The invention's effect】
As described above, according to the present invention, it becomes possible to directly hang and hang a crane suspension by the exposed suspension portion, which is very preferable in terms of workability. Further, since the asphalt mat can be suspended in a substantially horizontal state, it is easy to align the end portions of the asphalt mat, and the asphalt mats can be arranged without gaps.
Further, when the reinforcing bar is set in the mold, it is positioned at a predetermined height by the support leg portion, so that the reinforcing bar can be embedded at an accurate position in the asphalt mat .
[Brief description of the drawings]
FIG. 1 is a schematic sectional view of an asphalt mat according to the invention of FIG.
FIG. 2 is a plan view showing a partial cut of an asphalt mat.
FIG. 3 is a perspective view of a part of a reinforcing bar in which a hanging part is integrally formed.
FIG. 4 is a front view of a reinforcing bar.
FIG. 5 is an explanatory diagram in which reinforcing bars are set in a formwork.
6 is an explanatory diagram in which a combined iron wire is raised from the reinforcing bar of FIG. 5 and a lower half is driven. FIG.
FIG. 7 is an explanatory view showing a state in which an asphalt mat is suspended by a crane.
FIG. 8 is an explanatory diagram in which asphalt mats are arranged.
FIG. 9 is an explanatory view of a part in which the hanging part is a member different from the reinforcing bar.
FIG. 10 is an explanatory view of an embodiment in which a member having a hanging part and a supporting leg part is welded to a reinforcing bar.
FIG. 11 is an explanatory view similar to FIG. 1 in which the hanging portion is directly projected upward from the asphalt mastic.
FIG. 12 is an explanatory view of a part in which a hanging part protrudes upward from an asphalt mastic as a member separate from a reinforcing bar.
FIG. 13 is a schematic plan view of an asphalt mat showing a conventional example.
FIG. 14 is an explanatory view showing a suspended state of a conventional example.
FIG. 15 is an explanatory view showing a laying state of a conventional example.
[Explanation of symbols]
3 Asphalt mastic 7 Reinforcing bar 9 Hanging part 27 Hanging tool

Claims (6)

The asphalt mastic formed in a predetermined thickness is provided with reinforcing bars that are embedded in at least the asphalt mastic and have support legs, and a plurality of openings that are open upward along the reinforcing bars. rebar, asphalt mat, characterized in that a suspended portion exposed facing the open interior without protruding from the opening to the upper.   The asphalt mat according to claim 1, wherein the hanging portion is integrally formed with the reinforcing bar.   The asphalt mat according to claim 1, wherein the hanging portion has a separate shape from the reinforcing bar. Inside the asphalt mastic formed in a predetermined thickness to, providing a reinforcement for reinforcing equipped with a support leg, the reinforcing bars for the reinforcement, provided with a hook member is exposed to project from the upper surface of the asphalt mastic upward Asphalt mat characterized by.   The asphalt mat according to claim 4, wherein the suspended portion is formed integrally with the reinforcing bar.   The asphalt mat according to claim 4, wherein the hanging portion has a separate shape from the reinforcing bar.

Images