KR20170008310A - Protective structural body with flexible structure - Google Patents

Abstract

It is an object of the present invention to provide a protective structure of a hydraulic structure capable of reducing the impact force transmitted to a protective structure while reducing the collapse of a collapse such as an avalanche.
(10) having flexibility which forms an opening allowing permeation of the mouth constituting the disintegrating object, and a supporting means (20) for supporting the reducing material (10), wherein a plurality of reducing materials (10, 10) are stacked at a predetermined interval, and a plurality of reducing materials (10, 10) are arranged so as to face the inclined plane (31) in an intersecting direction.

Description

{PROTECTIVE STRUCTURAL BODY WITH FLEXIBLE STRUCTURE}

The present invention relates to a protective structure of oil structure in which various collapses, especially avalanches, are captured and captured.

As the avalanche protection structure, steel structures represented by reinforced concrete retaining walls or barrier walls provided with lateral members spaced apart from each other (Patent Documents 1 and 2) and flexible structures typified by a flexible net between a plurality of supports 3, 4).

The impact receiving surface of the steel structure is formed of a hard material such as concrete or steel as a steel surface. The oil structure is formed as a flexible surface such as a wire rope or a wire mesh, as a shock absorbing surface.

Patent Document 1: JP-A-7-180116 Patent Document 2: JP-A-8-13425 Patent Document 3: JP-A-2001-107322 Patent Document 4: JP-A-2012-225036

The conventional protection structure has the following problems.

<1> While the evaluation and development of tax reduction techniques for unstable solids such as rockfall are proceeding, evaluation and development of tax reduction technologies for deformations made of fine particles such as avalanche are greatly delayed.

For example, as for the method of evaluating the working load on the oil structure, the evaluation is substituted by the impact force of the fluid impinging on the steel structure.

<2> Therefore, when building an awnings for avalanches, the support and supporting base for supporting the impact receiving surface are large and high in strength, resulting in a high construction cost and a long construction period.

<3> Although the conventional oil structure has an effect for preventing the occurrence of an avalanche, there is a room for improvement because it is difficult for the avalanche to transmit the particles of the snow through the impact receiving surface and the effect of reducing the avalanche is sufficient.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a protection structure for a waterproof structure capable of reducing the impact force transmitted to a protection structure, Structure.

The present invention is characterized in that it comprises a plurality of compressing members having flexibility which form openings for permitting permeation of the mouth constituting the disintegrant and supporting means for supporting the compressing member in a standing state, Wherein the plurality of reducing materials are stacked at a predetermined interval and the plurality of reducing materials are disposed so as to face each other in an intersecting direction with respect to the inclined surface (reduction means 1) .

The protective structure according to the present invention is characterized by having a buffer space for forming a wall-shaped buffer shock-absorbing layer in which the decayed material temporarily stays between the plurality of reducing materials.

In the protective structure according to the present invention, the supporting means includes a strut, a support base for supporting the lower portion of the strut, and a support rope connected to the head of the strut.

In the protective structure of oil structure according to the present invention, a predetermined distance is formed between the plurality of reducing materials by providing a support between them.

In the protective structure according to the present invention, the other reducing means 2 is the rising angle of the reducing material with respect to the inclined surface, and the installation angle of the reducing material with respect to the inclined surface is a right angle or a substantially right angle.

In the protective structure according to the present invention, the other damper means 3 is the opening dimension of the damper material, and the opening dimension of the damper material is 20 * 20 mm or more.

In another aspect of the present invention, the tax cutter is a net form, and the collapsed object includes, for example, an avalanche.

In the protecting structure according to the present invention according to the present invention, the reducing material is a single number, and the reducing means 2, 3 may be appropriately combined.

In the present invention, by appropriately combining the tax cutters 1 to 3, a plurality of tax cuts are stacked at predetermined intervals, and a plurality of tax cuts are arranged with their crosswise directions directed to the sloped faces, It is possible to reduce the impact force transmitted to the tax reduction material while reducing water efficiently, thereby reducing the supporting force of the supporting means of the tax reduction material.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a protective structure of a dielectric structure according to Embodiment 1 of the present invention. Fig.
2 is a model view of a tax cut material disposed on an inclined plane.
Fig. 3 is an explanatory view of a tax cut material in which a part is omitted, (a) is a front view of the tax cut material, and (b) is a side view of the tax cut material.
Fig. 4 is a model diagram of a protective structure of oil structure according to Embodiment 2 in which a damper material is laminated. Fig.
Fig. 5 is a model diagram of a protective structure of a fluid structure in which a disintegration product transmits a damper of a laminated structure. Fig.
Fig. 6 is a plane model view of a protective structure having a laminated structure of a reducing material.
7 is an enlarged plan view of the protective structure of the oil structure in which the disintegration product transmits the damper material of the laminated structure.
8 is a model diagram of an avalanche model.

An embodiment of the present invention will be described with reference to Figs.

[Embodiment 1]

<1> Protective structure of oil structure.

1 and 2, the protective structure of the oil-structure is composed of a single or a plurality of net-like reducing materials 10 having flexibility, a supporting means 20 for supporting the reducing material 10 in an upright state, And by selecting and combining the rising angle of the reducing material 10 with respect to the sloping surface 31 and the size of the opening 11 formed in the reducing material 10 to form particles of the collapsed material 30 such as an avalanche While allowing the permeability of the decay 30 to be reduced.

In this example, a case where the reducing material 10 is a single number will be described.

&Lt; 2 >

The reducing material 10 is a flexible net having a plurality of openings 11 on the impact receiving surface 12 and is made of a metal net such as a diamond mesh net, a hexagonal mesh net, a resin net, a fiber net, And a composite net of fibers. The metal net includes, in addition to the steel wire and the high strength steel wire, a wire rope fixing the intersection.

The reducing material 10 has a strength enough to withstand the dropping energy of the expected collapsed material 30 and is disposed so as to face the inclined surface 31 in an intersecting direction.

The reducing material 10 has a length that can be spanned between one span of neighboring support means 20, 20, or between a plurality of spans.

In this embodiment, the reducing means 10 is disposed on the oblique side of the supporting means 20, but the reducing means 10 may be provided on the inclined surface side of the supporting means 20 or between the center portions of the supporting means 20 As shown in FIG.

&Lt; 3 >

The support means 20 includes a plurality of pillars 21 erected on the inclined surface 31 with intervals therebetween, a support base 22 for fixing the lower portion of the pillars 21, A plurality of support ropes 23 and an anchors for fixing these support ropes 23 to the inclined surfaces 31. [

The pillars 21 include known supports such as, for example, section steel, steel pipes, concrete-filled steel pipes, or concrete filled steel pipes with PC materials.

The support base 22 includes a concrete foundation, or a foundation foundation that directly puts the lower portion of the column 21 directly onto the ground.

A known brake device may be inserted into the support rope 23 as necessary.

Other constituent members of the support means 20 may be made of a wood standing upright on the inclined surface 31. [

<4> Means for energy reduction of collapsed water.

The protective structure of the oil structure selectively combines the rising angle of the damper member 10 with respect to the sloping surface 31 and the dimension of the opening 11 formed in the damper member 10 so that the collapsed material 30, It is possible to effectively reduce the energy possessed by the collapsed material 30 while permitting permeation of the particles of the collapsed material 30. [

<4.1> Installation angle of tax cut material.

One of the energy saving means of the collapsed material will be described with reference to FIG. 2. The energy (?) Of the collapsed material (30) can be increased by erecting the angle? (Tax deduction means 1).

It has been confirmed from the experimental results described below that the energy saving performance of the decay 30 is lowered when the declustering material 10 is tilted to the mountain side or the valley side of the inclined plane 31 to rise.

<4.2> The opening dimension of the tax cut material.

3 (a) and 3 (b), a description will be given of another energy saving means of the collapsed material. When the size (mesh size) of the opening 11 of the reducing material 10 is 20 * 20 mm or more, It is possible to effectively reduce the energy held (tax deduction means 2).

It is confirmed that the energy saving performance of the disintegrant 30 is lowered when the dimension (mesh size) L of the opening 11 of the reducing material 10 is smaller than 20 * 20 mm .

[Energy reduction effect of collapsed material by reducing material]

<1> Energy reduction effect by deformation of tax cut material.

1 and 2, when the collapsed material 30 such as an avalanche falling from the sloping mountain side to the inclined surface curved surface collides against the impact receiving surface 12 of the reducing material 10, the reducing material 10 is inclined And absorbs the energy by the deformation resistance of the reducing material 10. [

As a result, the burden load of the protective structure of the oil structure is reduced as much as the energy is reduced.

<2> Energy reduction effect by tax cut material.

The reducing material 10 constituting the protective structure of the oil structure shown in Figs. 2 and 3 is characterized in that the angle? With respect to the inclined surface 31 is orthogonal or substantially perpendicular to the angle? ) Of the damper member 10 has a size L of 20 x 20 mm or more so that a part of the collapsed article 30 is transmitted through the opening 11 and the impact receiving surface 12 of the damper member 10, The energy of the disintegration product 30 acting on the decomposition product 30 can be most efficiently reduced.

&Lt; 3 >

The burden load of the supporting means 20 for supporting the reducing material 10 is reduced because a part of the material 30 is transmitted through the reducing material 10 as described above.

Therefore, the support base 22 constituting the support means 20 can be downsized, and the support load can be reduced due to the support rope 23.

This makes it unnecessary to use high strength members such as the support pillars 21 and the support base 22 constituting the support means 20, thereby reducing the construction cost and shortening the construction period.

[Embodiment 2]

&Lt; 1 > A protecting structure of oil structure having a plurality of reducing materials.

4, a description will be given of a protective structure of oil structure provided with a plurality of reducing materials 10, 10. As shown in Fig.

The reducing material 10 is not limited to a single number, and a plurality of reducing materials 10, 10 may be stacked and disposed at a predetermined gap G (reduction means 3).

The structure of the protective structure of the oiled structure in the present example is the same as the structure of the protection structure 10 except for the number of the installed members of the reducing material 10 except for the plurality of net type reducing materials 10 and the support for supporting the reducing material 10 in the standing state The angle? And the dimension L of the opening 11 are the same as those described in the first embodiment.

&Lt; 2 >

In the present embodiment, a configuration in which the two reduction members 10a and 10b are stacked and disposed with the gap G therebetween is described, but the number of the stacks may be three or more.

&Lt; 3 >

6, struts 21a, 21b, and 21c are provided between stacked reduction materials 10a and 10b, and struts 21 are used as spacers, 10a and 10b can be formed with a gap G corresponding to the cross-sectional width of the pillars 21a, 21b and 21c.

In other words, the gap G is formed by sandwiching the mountain side and the valley side of the pillars 21a, 21b, 21c between the two reducing materials 10a, 10b.

&Lt; 4 > Relation between opening dimensions of each damper material.

The size of the opening 11 of each of the reducing materials 10a and 10b may be the same as the size of the opening 11 of the reducing material 10 on the oblique side, The dimension L of the slope surface 10 may be larger than that of the reducing material 10 on the side of the slope surface, or may be the opposite dimension relationship.

<5> Relation between tax cuts and landings.

When the damper member 10a on the mountain side and the damper member 10b on the curved side are provided for each strut 21 and the damper member 10b on the curved side is provided on the strut 21, .

The first is a configuration in which the reducing material 10b on the curved side is provided inseparably on all of the pillars 21a to 21c.

In this installation mode, both the acid side and the compressive members 10a and 10b on the curved side when the collapsed object 30 collides show almost the same deformation behavior toward the curved side.

The second is a configuration in which a single or a plurality of pillars 21b are provided as shown in Fig. 6, and a reducing material 10b on the side of the curtain is provided on pillars 21a and 21c.

In this installation mode, the compressive member 10b on the curved side exhibits a large deformation behavior with respect to the compressive member 10a on the horn side when the collapsed article 30 collides.

&Lt; 6 > Reason for forming a space between the reducing materials.

The spacing G is formed between the reducing materials 10 and 10 in order to use the material 30 as an energy saving material so as to remarkably enhance the reducing performance of the protecting structure.

The gap G functions to secure a buffer space between the reducing materials 10 and 10 and form a buffering shock receiving layer 32 of a wall type described later in this buffer space.

Will be described with reference to FIG.

The collapsed object 30 of the obstacle 10a on the mountain side collides with a plurality of the decoupling members 10a and 10b standing up with a gap G therebetween, .

In this case, compared to the speed (v ₁₎ of the collapsed water (30) passing through the tax reduction material (10a) of the sancheuk, speed (v ₂₎ of the collapsed water (30) passing through the tax reduction material (10b) of gokcheuk is made small , And the permeation amount of the decay product 30 per unit time.

By this difference, the collapsed object 30 temporarily retracts into the buffer space between the mutual reducing materials 10a, 10b to form the wall-shaped shock-absorbing impact receiving layer 32, and the wall-shaped shock absorbing receiving layer 32 Effectively reducing the energy of the subsequent collapse 30.

The particles of the shock absorbing receptive layer 32 are somewhat compacted in the cushioning space formed between the positive and negative reducing materials 10a and 10b but are pushed to the side of the cushion by the subsequent penetration of the decay 30 and replaced with new ones , And a wall-shaped shock-absorbing impact receiving layer 32 is continuously formed in the buffer space.

In addition, since the buffer shock-absorbing layer 32 functions as a transmission resistor of the disintegratable material 30, a wall-shaped auxiliary shock-absorbing effect by the disintegratable material 30 on the impact receiving surface side (mountain side) The receiving layer 33 is further formed so that the buffering impact receiving layer 32 and the auxiliary buffering impact receiving layer 33 cooperate to efficiently reduce the energy of the decay 30.

&Lt; 7 > Effect of this example.

In this example, the following effects are exhibited.

it is possible to reduce the number of the reduction members 10 and 10 and the number of the reduction members 10 and 10 by forming a gap G between the reduction members 10 and 10, The burden load of the means 20 can be greatly reduced.

b) the collapse of the collapsed object 30 (30) by the impact of the buffering action by the buffering impact-absorbing layer 32 and the auxiliary buffering impact-absorbing layer 33, as well as the permeation resistance of the collapsed object 30 by the plurality of reducing materials 10a, 10b ) Can be significantly increased.

[Embodiment 3]

The protection structure according to the present invention is a combination of any two of the above-described reduction units 1 to 3 (the reduction unit 1 + 2, the reduction unit 1 + 3, the reduction unit 2 + 3) Means 1 + 2 + 3).

[Impact test by avalanche model]

In order to clarify the time-dependent impact characteristics of the avalanche acting on the protective structure of the oil structure according to the present invention described above, experiments were conducted using an avalanche model appropriately combining the tax cutters 1 to 3.

<1> Avalanche model.

Fig. 8 shows a model diagram of the avalanche model installed in the low temperature room.

The avalanche pattern has a slope-like inclined face 31 having a height H and an overall length L, and a pressure receiving plate 34 is installed upright on the end of the inclined face 31.

On the sloped surface 31 on the upstream side of the pressure receiving plate 34, a rhombic wire net, which is a reducing material, is provided by changing the combination of the reducing means 1 to 3 and the artificial snow (density of 550 to 600 kg / m ³ were continuously dropped from the upstream side of the inclined plane 31 and the impact characteristics of the artificial avalanche in each of the reducing means 1 to 3 were tested.

The conditions of the cases 1 to 13 in which the tax deduction means 1 to 3 are combined are as follows.

Cases 5, 9, and 13 are formed by forming a gap between two stacked metal wires.

Installation angle of wire mesh (α)
(Tax cutter 1) Mesh of wire mesh
(Tax cutter 2) Number of Wire Mesh
(Tax cutter 3) Case 1 - - No Wire Mesh Case 2 90 ° 50mm One Case 3 90 ° 40mm One Case 4 90 ° 30mm One Case 5 90 ° 30mm, 40mm 2 Case 6 45 ° 50mm One Case 7 45 ° 40mm One Case 8 45 ° 30mm One Case 9 45 ° 30mm, 40mm 2 Case 10 Right angle of slope 50mm One Case 11 Right angle of slope 40mm One Case 12 Right angle of slope 30mm One Case 13 Right angle of slope 30mm, 30mm 2

<2> Test results.

a. About influence of setting angle of wire mesh

As for the installation angle? Of the wire mesh with respect to the inclined plane 31, the cases 6 to 9 in which the wire mesh is installed at an angle of 45 degrees with respect to the horizontal are the least effective in reducing the impact caused by the artificial avalanche, In cases 2 to 5 where wire mesh was installed at an angle, a certain degree of impact reduction effect could be confirmed. Cases 10 to 13 in which a wire mesh was installed at right angles to the inclined plane 31 had the highest impact reduction effect due to the artificial avalanche.

From the above, it can be confirmed that the installation angle of the wire net to the inclined plane 31 is a factor that greatly affects the reduction effect of the avalanche.

It is preferable that the wire mesh is installed at right angles to the inclined plane 31 with respect to the installation angle of the wire mesh with respect to the inclined plane 31. [

b. Tax cut Opening  About impact

As the mesh of the wire net becomes smaller, the tax cut effect of the artificial avalanche increases, while the impact load on the wire net increases, and the load burden of the support and the support base increases.

On the contrary, the larger the mesh of the wire mesh, the lower the effect of the reduction of the artificial avalanche, while the impact force on the wire net becomes smaller and the load burden of the support and the support base is reduced.

From the above, it can be confirmed that the mesh dimension of the wire mesh is a factor that greatly affects the tax cut effect of the avalanche.

In the experiment, a mesh of a wire mesh was used at 30 mm. However, in the case of a separate natural field test, the limit of a mesh or the support base having a general strength is limited to 20 mm, Do.

c. Tax cut  Number

As the number of stacks of wire mesh increases, the tax cut effect of artificial avalanche increases.

Compared with cases 3, 4, 7, 8, and 12 in which one wire net is installed, cases 5, 9, and 13 in which two wire nettings are stacked have a higher effect of reducing the artificial avalanche.

Particularly, Case 13 in which two wire meshes of the same mesh are laminated to Cases 5 and 9 in which two mesh nettings are stacked is remarkably effective in reducing the artificial avalanche.

d. Overall assessment

In cases 2 to 13, it was confirmed that the effect of tax reduction on the artificial avalanche was confirmed by the measurement data of the change of the impact force with time.

Finally, out of cases 2 to 13, case 13 has the highest tax cut effect of artificial avalanche.

That is, in the protective structure of the oil-resistant structure having the highest tax reduction performance against the artificial avalanche, the reduction condition is that a plurality of wire meshes are stacked at intervals, a mesh of the wire mesh is 20 mm or more, Which is a combination of a right angle and a right angle.

10 ..... tax cut material
11 ..... The opening of the tax cutter
12 ..... Shock receiving surface of tax cut material
20 ..... support means
21 ..... holding
22 ..... support foundation
23 ..... Support rope
30 ..... collapsed water
31 .... slope

Claims (8)

A plurality of compressing members having flexibility which form openings for permitting the permeation of the mouths constituting the disintegration product and supporting means for supporting the compressing members in the standing state, As shown in Fig.
Wherein the plurality of reducing materials are stacked at a predetermined interval and the plurality of reducing materials are disposed so as to face each other in an intersecting direction with respect to an inclined surface. The method according to claim 1,
And a buffer space for forming a wall-shaped buffer shock-absorbing layer in which the decayed material temporarily stays between the plurality of decompression materials. The method according to claim 1,
Wherein the support means comprises a strut, a support base for supporting a lower portion of the strut, and a support rope connected to a head of the strut. The method according to any one of claims 1 to 3,
And a predetermined distance is formed between the plurality of decompression members. The method according to any one of claims 1 to 4,
Characterized in that the installation angle of the reducing material to the inclined surface is a right angle or a substantially right angle. The method according to any one of claims 1 to 5,
And the opening dimension of the reducing material is 20 * 20 mm or more. The method according to any one of claims 1 to 6,
Characterized in that the tax cutter is a net type. The method according to any one of claims 1 to 7,
Wherein the collapsed material is an avalanche.

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