WO2014102864A1 - 防護用堤体 - Google Patents

防護用堤体 Download PDF

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Publication number
WO2014102864A1
WO2014102864A1 PCT/JP2012/008360 JP2012008360W WO2014102864A1 WO 2014102864 A1 WO2014102864 A1 WO 2014102864A1 JP 2012008360 W JP2012008360 W JP 2012008360W WO 2014102864 A1 WO2014102864 A1 WO 2014102864A1
Authority
WO
WIPO (PCT)
Prior art keywords
embankment
impact
restraint
protective
buffer
Prior art date
Application number
PCT/JP2012/008360
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
利充 野村
昭一 井上
陽一 西田
Original Assignee
株式会社プロテックエンジニアリング
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社プロテックエンジニアリング filed Critical 株式会社プロテックエンジニアリング
Priority to KR1020157016779A priority Critical patent/KR102067315B1/ko
Priority to JP2014553884A priority patent/JP5859682B2/ja
Priority to PCT/JP2012/008360 priority patent/WO2014102864A1/ja
Priority to TW102128613A priority patent/TWI608146B/zh
Publication of WO2014102864A1 publication Critical patent/WO2014102864A1/ja

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/18—Making embankments, e.g. dikes, dams

Definitions

  • the present invention relates to a protective embankment that receives and protects rocks, landslides, and avalanches.
  • Patent Document 1 discloses a protective bank body that receives a huge impact such as falling rocks.
  • This protective levee was constructed by repeating a hierarchical embankment and a laying of embankment reinforcement that embeds embedding reinforcement such as geotextile into the embankment to construct a embankment with a trapezoidal cross section. It has a structure in which the entire receiving surface on the mountain side is covered with a hard lining material such as a concrete panel.
  • Patent Documents 2 and 3 the mountain-side receiving surface of the embankment embankment is covered with a cushion layer formed by filling a resin frame having a plurality of cells filled with fillers such as granular materials and earth and sand.
  • a protective dam body is disclosed. The protection dam body of patent documents 2 and 3 attenuates an impact by local plastic deformation of a cushion layer.
  • the above-described conventional protective bank body has the following problems.
  • the protective levee body of Patent Document 1 has a problem that a concrete hard lining material is destroyed at the time of impact and a problem that the cost of the hard lining material increases.
  • the hard lining material is a plurality of concrete panels, the impact that has acted on some of the panels cannot be transmitted to a wide area of the receiving surface of the embankment bank. Therefore, it is necessary to make the embankment body large enough to withstand impacts acting locally.
  • the protective dam body of Patent Document 2 cannot transmit an impact that has acted on a part of the cushion layer over a wide range of the receiving surface of the embankment dam body.
  • the present invention has been made to solve the above-mentioned problems.
  • the object of the present invention is to reduce the cost, widen the transmission range of the impact and improve the protection performance, and reduce the size of the dam body. It is to provide a protective embankment that can be paralleled.
  • the present invention is a protective levee body comprising a levee body body having a receiving surface, and a semi-hard buffer restraint layer covering the receiving surface, wherein the dam body body is composed of a reinforced embankment body,
  • the buffer constraining layer is composed of a plurality of impact bodies in which a hard cushion material is accommodated in a horizontally long restraint so that the load can be transmitted between adjacent impact bodies.
  • the shocks acting on the buffer restraint layer are distributed and transmitted to the main body through the buffer restraint layer whose hardness changes from semi-rigid to hard when the bodies are connected and received.
  • an uneven pressing surface in which a part of the hard cushioning material protrudes from the back surface toward the receiving surface of the dam body main body is formed on the back surface of the buffer restraint layer
  • the opening on the back surface of the restraint rod and the size of the hard cushioning material are related so that the uneven pressing surface pressurizes and deforms the receiving surface of the levee body.
  • the protective dam body of the present invention is provided with a buffer restraint layer whose hardness changes from semi-rigid to hard when received, thereby reducing the cost, widening the transmission range of the impact, improving the protection performance, Miniaturization of the body can be paralleled. Furthermore, in the present invention, the uneven pressing surface is formed on the back surface of the semi-rigid buffer restraint layer, so that the contact area between the dam body main body and the buffer restraint layer is greatly increased, and the uneven press surface at the time of impact is By hardening the surface layer of the impact surface, the shock dispersion and transmission performance between the buffer restraint layer and the main body is remarkably enhanced.
  • the protective dam body 10 covers the dam body body 20 and the receiving surface 20b on the mountain side of the dam body body 20.
  • a semi-rigid buffer constraining layer 30 is used.
  • the buffer constraining layer 30 has a characteristic that its hardness increases when it receives an impact, and the shock can be distributed and transmitted through the buffer constraining layer 30 over a wide area.
  • the uneven pressing surface 37 is formed on the back surface of the semi-hard buffer restraint layer 30, and the receiving surface 20 b of the dam body 20 is formed into an uneven shape corresponding to the uneven pressing surface 37.
  • the contact area between the dam body main body 20 and the buffer restraint layer 30 is increased, and the uneven pressing surface 37 hardens the surface layer of the receiving surface 20b at the time of receiving, whereby the buffer restraint layer 30 and the dam body main body 20 are The dispersive and transferability of the shock between the two becomes much higher.
  • the dam body body 20 is a resistor having a substantially trapezoidal cross section that receives impacts such as falling rocks.
  • a plurality of embankment layers 21 in which the main body 20 is hierarchically constructed, a sheet-like embankment reinforcing material 22 laid between the embankment layers 21, and a back surface 20 a on the inclined valley side of the embankment layer 21 are covered.
  • a well-known dam body structure can be applied if it is a gravity type resistance body with small hardness compared with the buffer restraint layer 30.
  • FIG. shows a case where the mountain-side receiving surface 20b of the levee body main body 20 is formed vertically, a gradient may be imparted to the mountain-side receiving surface 20b.
  • the embankment reinforcement material 22 is a reinforcing member for increasing the shear resistance and bending resistance of the dam body body 20, and a known mesh-like material having a high tensile strength typified by a geogrid can be used. .
  • the connection relationship between the embankment reinforcing material 22 and the buffer restraint layer 30 may be an integral structure or a separate structure. When one end of the wall material 23 is connected to the buffer constraining layer 30 and integrated, the connection strength between the dam body main body 20 and the buffer constraining layer 30 is increased, and the stability of the buffer constraining layer 30 is improved.
  • the wall material 23 that protects the slope of the levee body 20 is formed by bending a rectangular expanded metal, a welded wire mesh, a woven wire mesh, a perforated steel plate, etc. into a substantially L-shaped cross section, A reinforcing diagonal member 23a is disposed between the horizontal portion and the upright portion. Moreover, a known suction prevention sheet, a greening sheet, etc. are attached inside the wall surface material 23 as needed.
  • the buffer constraint layer 30 is composed of a plurality of horizontally long receiving bodies 35 having a square cross-sectional shape, and the plurality of receiving bodies 35 are stacked vertically and horizontally to receive the mountain-side receiving surface of the dam body body 20. 20b is coated.
  • the impact body 35 is normally semi-rigid and has a property of increasing its hardness when received.
  • “semi-rigid” refers to a state in which a certain range of bending deformation and consolidation deformation are allowed.
  • the impactor 35 is attached to the inside of the restraint rod 31, a plurality of oblong restraint rods 31 having a square cross section, the hard cushioning material 32 sealed in the restraint rod 31 so as to be restrained.
  • the suction-preventing sheet 33 is provided, and a concave and convex pressing surface 37 is formed by projecting a part of the hard cushioning material 32 on the back surface of the impactor 35.
  • the suction prevention sheet 33 may be omitted.
  • FIG. 3 shows an example of the restraint rod 31.
  • the restraint rod 31 has a bottom panel 31a having a horizontally long rectangle, a front panel 31b and a back panel 31c erected on a pair of long sides of the bottom panel 31a, and one or both sides of a pair of short sides of the bottom panel 31a. And an end face panel 31d.
  • a partition panel (not shown) having the same shape as the end face panel 31d may be additionally installed in the middle portion of the restraint rod 31.
  • the restraint rod 31 has a strength that does not easily break when a falling rock collides, and is formed, for example, by combining various wire meshes, expanded metal, perforated steel plates, or the like.
  • the material is not limited to metal, but may be formed of a resin net-like material having excellent weather resistance and tensile strength.
  • the restraint rod 31 it is also possible to divert a well-known futon rod, mesh box, and gabion used for revetment.
  • the upper opening of the restraint rod 31 is closed with a dedicated lid 31e, or the bottom surface 31a of the upper restraint rod 31 is also used as a lid.
  • the hard cushioning material 32 is sealed in the restraint rod 31 so as to be restrained. The reason for this is to prevent the hard cushioning material 32 from popping out and to lock when the compaction deformation of the hard cushioning material 32 reaches the limit, while maintaining the shape of the impacting body 35. This is to change the hardness from semi-hard to hard.
  • both the front panel 31b and the back panel 31c of the restraint rod 31 have an opening size smaller than the maximum diameter of the hard cushioning material 32 so that the passage of the hard cushioning material 32 can be prevented.
  • the opening dimensions allow a part of the hard cushioning material 32 to protrude. More preferably, the opening size of the front panel 31b of the restraint rod 31 is made smaller than the opening of the back panel 31c.
  • Hard cushioning material 32 hard granular materials, such as a stone, crushed stone, and artificial granulated material, can be used. Considering the buffer performance, a single granular hard granule is desirable.
  • ⁇ 1> Construction of the lowest impact body As shown in FIG. 4A, a plurality of restraint rods 31 are arranged in a horizontal row on the mountain side of the installation site, and a connecting material such as a coupling coil is provided between adjacent restraint rods 31. Link. After the suction prevention sheet 33 is provided in each restraint rod 31 with only the upper opening opened, a hard cushioning material 32 of a predetermined size is filled to form the lowermost receiving body 35. When the hard cushioning material 32 is filled in the restraint rod 31, a part of the hard cushioning material 32 protrudes to the outside through the opening of the rear panel 31 c, and the uneven pressing surface 37 is formed on the rear surface of the impactor 35.
  • FIG. 4B shows a form in which the embankment layer 21 is constructed on the back surface of the lowermost receiving body 35.
  • the impactor 35 and the wall surface material 23 prevent free movement of the earth and sand, so that the embankment layer 21 can be reliably rolled.
  • the lower and second impact bodies 35 are connected by a connecting member 34 so that a load can be transmitted. Thereafter, the above-described operation is repeated, and the dam body main body 20 made of a reinforced embankment body having an uneven receiving surface 20b as shown in FIG. 2 and a semi-rigid buffering constraint in which an uneven pressing surface 37 is formed on the back surface.
  • a protective embankment 10 having a layer 30 is constructed. The upper opening of the uppermost receiver 35 is closed with a dedicated lid 31e.
  • the semi-rigid buffering restraint layer 30 covers the mountain-side receiving surface 20 b of the bank body 20. Further, the receiving members 35 adjacent to each other in the vertical and horizontal directions constituting the buffer restraint layer 30 are connected by a connecting member 34 so that a load can be transmitted. The uneven pressing surface 37 of the buffer restraint layer 30 and the receiving surface 20b of the bank body 20 are in contact with each other in a familiar state. Before the impact action, the buffer restraint layer 30 is in a semi-rigid state.
  • FIG. 5 shows a horizontal cross section of the mountain side of the protective dam body 10 when the impact F acts.
  • an impact F such as falling rocks acts on a part of the buffer restraint layer 30
  • the hard cushioning material 32 enclosed in the restraint rod 31 is restrained by the restraint rod 31 and undergoes compaction deformation, and the entire impactor 35 is not fully damaged. It bends and deforms from the state shown by the dotted line.
  • the impact F is attenuated by the consolidation deformation resistance of the hard cushioning material 32 and the bending resistance of the impactor 35. Even if the impact F repeatedly acts, the restraining rod 31 prevents the hard cushioning material 32 from jumping out, and the sealed state of the hard cushioning material 32 is maintained.
  • the protective dam body 10 not only attenuates the impact F by the compaction deformation resistance of the hard cushioning material 32 and the deflection resistance of the impactor 35, but also a buffer constraint by combining a plurality of factors described below.
  • the impact F acting on a part of the layer 30 can be dispersed in a wide range and transmitted to the dam body main body 20 to be efficiently attenuated.
  • the curing range of the buffer constraining layer 30 increases in proportion to the magnitude of the impact F. Therefore, the impact F that has acted on a part of the buffer restraint layer 30 is transmitted over a wide range to the receiving surface 20 b of the levee body 20 through the horizontally hardened receiving body 35. Since the buffer constraining layer 30 and the receiving surface 20b of the dam body main body 20 are in contact with each other, the transmission loss of the impact F is small. Since the impact F transmitted to the levee body 20 can be effectively attenuated by the cooperation of the deformation resistance of the embankment layer 21 and the tensile strength of the embankment reinforcement 22, the protection performance of the protection dam body 10 compared to the conventional case. Becomes higher.
  • the impact surface 20b of the levee body 20 is not a planar shape, but an uneven three-dimensional shape corresponding to the uneven pressing surface 37 of the buffer restraint layer 30. Therefore, the ground contact area between the levee body main body 20 and the buffer restraint layer 30 is greatly increased as compared with the case where the receiving surface 20b is formed as a flat surface. As the ground contact area (receiving area) between the dam body body 20 and the buffer restraint layer 30 increases, the dispersion transmission area of the impact F between the dam body body 20 and the buffer restraint layer 30 increases, so that the impact F Improves the damping performance.
  • the impact F is distributed and transmitted over a wide area of the dam body 20 through the hardened surface layer of the receiving surface 20b, and the interior of the dam body 20 through the surface layer of the receiving surface 20b hardened while maintaining the uneven shape. Since the transmission direction of the shock F in the radial direction spreads radially, the damping performance of the shock F is further improved.
  • ⁇ 4> Load burden on the levee body When viewed from the dam body 20 side, the impact F is transmitted through one or more hardened bodies 35 that are hardened. If the transmission area of the impact F in the levee body 20 is increased, the load burden per unit area as the protective dam body 10 is reduced, which is advantageous in designing the protective dam body 10 to be small and light. If the protective dam body 10 can be reduced in size and weight, the burden on the supporting ground can be reduced, so there is no need for ground improvement.
  • the tensile force acting on the restraint rod 31 at the time of impact will be examined.
  • the hard cushioning material 32 enclosed in the restraint rod 31 causes an interlocking phenomenon when an external force is applied, thereby preventing free deformation.
  • the interlocking phenomenon is caused by the internal friction of the hard cushioning material 32 and is not greatly influenced by the strength of the restraint rod 31. Even by restraining with the restraint rod 31 having a small strength, the hard cushioning material 32 causes a locking phenomenon. In this way, when the hard cushioning material 32 causes a locking phenomenon, an excessive tensile force does not act on the restraint rod 31, so that the restraint rod 31 is not damaged by the tensile force at the time of impact.
  • FIG. 6 shows a configuration in which a reinforcing connecting member 36 such as a steel rod is arranged at the joint portion between adjacent impact bodies 35 to increase the connection strength. Since the coil-shaped connecting material 34 is wound between the adjacent receiving bodies 35, the reinforcing connecting material 36 is inserted and installed in the inner space of the connecting material 34. The installation range of the reinforcing connecting member 36 is installed at the full length of each side of the restraint rod 31 or a part thereof.
  • symbol 31f in a figure is the frame material which comprises the restraint rod 31.
  • the reinforcing connecting member 36 cooperates with the connecting member 34 to enhance the integrity between the impact bodies 35, the impact transmission is improved as compared with the case where the connecting member 34 is used alone.
  • FIG. 7 shows the protective dam body 10 in which the front surface of the buffer restraint layer 30 is formed flat using the restraint rod 31 having a rhombus cross section
  • FIG. 8 shows the buffer restraint layer 30 using the restraint rod 31 having a rectangular section.
  • the protection bank body 10 which formed the front surface in step shape is shown.
  • the stability of the protective dam body 10 is increased by forming the buffer constraining layer 30 in a slanted manner with a gradient.
  • a plurality of impact bodies 35 are arranged in a vertical row.
  • a plurality of impact bodies 35 may be arranged in multiple rows.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Architecture (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
PCT/JP2012/008360 2012-12-27 2012-12-27 防護用堤体 WO2014102864A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020157016779A KR102067315B1 (ko) 2012-12-27 2012-12-27 방호용 제방
JP2014553884A JP5859682B2 (ja) 2012-12-27 2012-12-27 防護用堤体
PCT/JP2012/008360 WO2014102864A1 (ja) 2012-12-27 2012-12-27 防護用堤体
TW102128613A TWI608146B (zh) 2012-12-27 2013-08-09 Protective dike

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/008360 WO2014102864A1 (ja) 2012-12-27 2012-12-27 防護用堤体

Publications (1)

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WO2014102864A1 true WO2014102864A1 (ja) 2014-07-03

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Application Number Title Priority Date Filing Date
PCT/JP2012/008360 WO2014102864A1 (ja) 2012-12-27 2012-12-27 防護用堤体

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JP (1) JP5859682B2 (ko)
KR (1) KR102067315B1 (ko)
TW (1) TWI608146B (ko)
WO (1) WO2014102864A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053251A (ja) * 2014-09-03 2016-04-14 株式会社ライテク シェッドとシェッド用緩衝体

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6395732U (ko) * 1987-12-01 1988-06-21
JP2004076343A (ja) * 2002-08-13 2004-03-11 Paritei Zipangu:Kk 擁壁及び擁壁用ブロック
JP2011047162A (ja) * 2009-08-26 2011-03-10 Tokyo Printing Ink Mfg Co Ltd 防護堤及びその施工方法
JP2011084918A (ja) * 2009-10-14 2011-04-28 Nihon Samicon Co Ltd 落石防護用保護構造物

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003232024A (ja) * 2002-02-07 2003-08-19 Rikako Wakabayashi 護岸および河床用構築材
JP4554999B2 (ja) * 2004-06-16 2010-09-29 株式会社プロテックエンジニアリング 衝撃吸収用堤体および衝撃エネルギーの吸収方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6395732U (ko) * 1987-12-01 1988-06-21
JP2004076343A (ja) * 2002-08-13 2004-03-11 Paritei Zipangu:Kk 擁壁及び擁壁用ブロック
JP2011047162A (ja) * 2009-08-26 2011-03-10 Tokyo Printing Ink Mfg Co Ltd 防護堤及びその施工方法
JP2011084918A (ja) * 2009-10-14 2011-04-28 Nihon Samicon Co Ltd 落石防護用保護構造物

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053251A (ja) * 2014-09-03 2016-04-14 株式会社ライテク シェッドとシェッド用緩衝体

Also Published As

Publication number Publication date
TWI608146B (zh) 2017-12-11
TW201425692A (zh) 2014-07-01
KR102067315B1 (ko) 2020-01-16
JPWO2014102864A1 (ja) 2017-01-12
KR20150100691A (ko) 2015-09-02
JP5859682B2 (ja) 2016-02-10

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