JPH0633438A - Light-weight banking work - Google Patents
Light-weight banking workInfo
- Publication number
- JPH0633438A JPH0633438A JP18839692A JP18839692A JPH0633438A JP H0633438 A JPH0633438 A JP H0633438A JP 18839692 A JP18839692 A JP 18839692A JP 18839692 A JP18839692 A JP 18839692A JP H0633438 A JPH0633438 A JP H0633438A
- Authority
- JP
- Japan
- Prior art keywords
- urethane foam
- urethane
- layer
- foam layer
- embankment
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000006260 foam Substances 0.000 claims abstract description 55
- 238000010276 construction Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 12
- 229920006328 Styrofoam Polymers 0.000 claims description 11
- 239000008261 styrofoam Substances 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 10
- 239000004567 concrete Substances 0.000 claims description 9
- 238000005187 foaming Methods 0.000 claims description 9
- 239000010426 asphalt Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000008262 pumice Substances 0.000 claims description 5
- 239000012779 reinforcing material Substances 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000010410 layer Substances 0.000 abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 239000002344 surface layer Substances 0.000 abstract description 6
- 239000002689 soil Substances 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000003562 lightweight material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920006327 polystyrene foam Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XVEUJTIZHZIHJM-UHFFFAOYSA-N a828782 Chemical compound CCOC(N)=O.CCOC(N)=O XVEUJTIZHZIHJM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、軽量盛土工法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight embankment method.
【０００２】[0002]
【従来の技術】従来、盛土構築現場の基礎地盤が、軟弱
であったり地すべりの危険性がある場合、地盤改良等種
々対策工法を行った後に盛土を施工していた。2. Description of the Related Art Conventionally, when the foundation ground at the embankment construction site is soft or there is a risk of landslides, the embankment was constructed after various measures such as ground improvement were performed.
【０００３】また、最近では、盛土材として軽量な発泡
スチロールブロックを積層して用いる工法（ＥＰＳ工
法）も実施されている。Further, recently, a construction method (EPS construction method) in which lightweight polystyrene foam blocks are laminated and used as an embankment material has been carried out.
【０００４】[0004]
【発明が解決しようとする課題】ところが、地盤改良等
の対策工法を行うには、多くの工期と費用がかかってい
た。However, it takes a lot of time and money to implement a countermeasure method such as ground improvement.
【０００５】また、発泡スチロールブロックを積層する
工法（ＥＰＳ工法）では、地盤成形を正確に行なう必要
性や、コンクリート床版の施工・筋結材の必要性、また
石油類に溶解するといった問題があった。Further, the method of stacking styrofoam blocks (EPS method) has the problems that ground molding must be performed accurately, that concrete floor slabs should be constructed and that brazing materials should be used, and that they should be dissolved in petroleum. It was
【０００６】[0006]
【課題を解決するための手段】そこで、本発明では、整
地した盛土構築場所に、ウレタン発泡原液を発泡させて
発泡ウレタン層を形成することにより連続一体化した石
油類にも溶解しない軽量盛土塊とし、同発泡ウレタン層
の表面に一定の厚さの土砂を盛って、盛土を形成するこ
とを特徴とする軽量盛土工法を提供せんとするものであ
る。Therefore, in the present invention, a lightweight embankment mass that is not dissolved in petroleum continuously integrated by foaming a urethane foaming undiluted solution to form a urethane foam layer at a leveled embankment construction site. The present invention provides a lightweight embankment method characterized by forming a bank of earth and sand with a certain thickness on the surface of the urethane foam layer.
【０００７】また、本発明では、ウレタンに骨材を混入
して発泡ウレタン層を形成したこと、骨材として、各種
発泡樹脂片、各種プラスチック片、タイヤ片、木材片、
コンクリート塊、アスファルト塊、軽石、及び砕石等の
内の少なくとも一種類を使用したこと、発泡ウレタン層
中に補強材を配設したこと、及び、発泡ウレタン層中に
発泡スチロールブロックを配設したことにも特徴を有す
る。Further, in the present invention, the urethane foam is mixed with the aggregate to form the urethane foam layer. As the aggregate, various foamed resin pieces, various plastic pieces, tire pieces, wood pieces,
Using at least one type of concrete block, asphalt block, pumice stone, crushed stone, etc., arranging a reinforcing material in the urethane foam layer, and arranging a polystyrene foam block in the urethane foam layer. Also has features.
【０００８】[0008]
【作用】盛土の施工は、次の手順に従って行う。[Operation] The embankment is constructed according to the following procedure.
【０００９】 盛土構築場所を必要に応じて掘削し、
整地する。If necessary, excavate the embankment construction site,
Level the ground.
【００１０】 整地した盛土構築場所に、ウレタン発
泡原液を現場発泡させて所定の高さの発泡ウレタン層を
形成する。The urethane foaming undiluted solution is foamed in situ at a leveled embankment construction site to form a urethane foam layer having a predetermined height.
【００１１】 発泡ウレタン層の表面に一定厚さの土
砂を盛って、盛土表層を形成する。The surface of the urethane foam layer is filled with earth and sand of a certain thickness to form an embankment surface layer.
【００１２】このようにして、軽量な盛土を簡単に施工
することができる。In this way, a lightweight embankment can be easily constructed.
【００１３】この際、ウレタンに骨材を混入して発泡ウ
レタン層を形成することにより、高価なウレタンの使用
量を減量させると共に、強度を増大させることができる
ものであり、かかる骨材としては、各種発泡樹脂片、各
種プラスチック片、タイヤ片、木材片、コンクリート
塊、アスファルト塊、軽石、及び砕石等の内の少なくと
も一種類を使用することができる。In this case, by mixing the aggregate with urethane to form the urethane foam layer, the amount of expensive urethane used can be reduced and the strength can be increased. At least one of various foamed resin pieces, various plastic pieces, tire pieces, wood pieces, concrete lumps, asphalt lumps, pumice stones, and crushed stones can be used.
【００１４】さらに、発泡ウレタン層中に補強材を配設
した場合には、盛土をより強固なものにすることができ
る。Furthermore, when the reinforcing material is provided in the urethane foam layer, the embankment can be made stronger.
【００１５】また、発泡ウレタン層中に発泡スチロール
ブロック等の軽量材を配設した場合には、盛土の軽量性
を確保したまま、高価なウレタンの使用量を大幅に削減
することができる。When a lightweight material such as a styrofoam block is provided in the urethane foam layer, the amount of expensive urethane used can be greatly reduced while ensuring the lightweightness of the embankment.
【００１６】[0016]
【実施例】以下、本発明の実施例を図面を参照しながら
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１７】図１は、本発明に係わる軽量盛土工法の
内、平地上盛土第１実施例としての軽量盛土Ａの施工フ
ロー図であり、かかる施工フロー図を参照して、軽量盛
土工法を説明する。FIG. 1 is a construction flow diagram of a lightweight embankment A as a first embodiment of a flat embankment among the lightweight embankment construction methods according to the present invention. The lightweight embankment construction method will be described with reference to the construction flow chart. To do.
【００１８】 図１（イ）に示すように、盛土構築場
所Ｇを必要に応じて掘削し、整地する。As shown in FIG. 1A, the embankment building place G is excavated as necessary to level the ground.
【００１９】 図１（ロ）に示すように、整地した盛
土構築場所Ｇ上に一定厚の砂層を形成したり、透水シー
トを敷設して、透水層１を形成する。As shown in FIG. 1B, a water permeable layer 1 is formed by forming a sand layer of a certain thickness or laying a water permeable sheet on the embankment construction site G that has been leveled.
【００２０】 図１（ハ）に示すように、透水層１上
にウレタン発泡原液をウレタン噴出装置・注入装置Ｍに
より噴出・注入させると共に発泡させて、一定高さの発
泡ウレタン層２を形成する。As shown in FIG. 1C, the urethane foaming undiluted solution is jetted / injected by the urethane jetting device / injecting device M and foamed on the water permeable layer 1 to form the urethane foam layer 2 having a constant height. .
【００２１】 図１（ニ）（ホ）に示すように、、一
定高さの発泡ウレタン層２を階段状に順次積層発泡させ
て一体化し、所定高さの一体化した発泡ウレタン層２を
形成する。As shown in FIGS. 1D and 1E, a urethane foam layer 2 having a constant height is sequentially laminated and foamed in a stepwise manner to be integrated to form an integrated urethane foam layer 2 having a predetermined height. To do.
【００２２】 図１（ヘ）に示すように、発泡ウレタ
ン層２の表面に、土砂を一定の厚さに盛って、盛土表層
３を形成する。As shown in FIG. 1F, earth and sand are piled up on the surface of the urethane foam layer 2 to a constant thickness to form the embankment surface layer 3.
【００２３】このようにして、軽量の盛土Ａを施工する
ことができる。In this way, the lightweight embankment A can be constructed.
【００２４】ここで、発泡ウレタン層２を形成する発泡
ウレタンは、(1) 軽量性、(2) 施工性、(3) 充填性、
(4) 複合構造性、(5) 自立性、(6) 耐水性、(7) 強度特
性、(8) 透水・吸水特性、(9) 耐熱性、(10)耐薬品性、
(11)衝撃吸収性に対して以下のような特徴を有するもの
である。Here, the urethane foam forming the urethane foam layer 2 includes (1) light weight, (2) workability, (3) filling property,
(4) Composite structure, (5) Self-supporting, (6) Water resistance, (7) Strength property, (8) Water permeability / water absorption property, (9) Heat resistance, (10) Chemical resistance,
(11) It has the following characteristics with respect to shock absorption.
【００２５】(1) 軽量性 単位体積重量が25〜50kg／ｍ3 （原液配合により任意に
設定可能）と超軽量（土砂・コンクリートの約1/50）
で、軟弱地盤の沈下・支持力不足問題解決に有効。(1) Lightness Unit volume weight is 25 to 50 kg / m 3 (can be set arbitrarily according to the stock solution mix) and ultra light weight (about 1/50 of earth and sand / concrete)
It is effective in solving subsidence of soft ground and lack of bearing capacity.
【００２６】(2) 施工性 原液をホース圧送して、20〜40倍に発泡させて発泡ウレ
タンによる盛土ができる。小さな設備、少量の材料で、
短時間に大量の施工が可能であり、非常に施工性が良
い。施工現場での地盤成形が簡単で施工性が良い。(2) Workability The undiluted solution is pumped by a hose and foamed 20 to 40 times to form embankment with urethane foam. Small equipment, small amount of material,
A large amount of work can be done in a short time, and the workability is very good. It is easy to form the ground at the construction site and has good workability.
【００２７】(3) 充填性 ウレタン発泡原液は、数十倍に発泡した後硬化するた
め、地盤に凹凸がある場合でも充填し、成形が簡単であ
る。(3) Fillability Since the urethane foaming undiluted solution is foamed several tens of times and then cured, it can be filled and molded even if the ground has irregularities.
【００２８】(4) 複合構造性 発泡ウレタンは、自己接着性に優れており、対象物とも
なじんで接着固化するため、複合構造体としての一体化
が図れる。また、鉄筋補強材が容易に組込めるため、よ
り一層の強固な構造体の造成が可能である。(4) Composite Structure Urethane foam is excellent in self-adhesiveness and adheres and solidifies with an object, so that it can be integrated as a composite structure. Further, since the reinforcing bar reinforcing material can be easily incorporated, it is possible to construct a stronger structure.
【００２９】(5) 自立性 ウレタン原液を硬化したウレタン発泡体に接して新たに
発泡させると、相互に接着して一体化し、弱線のない連
続したマス（塊）となり、自立構造体として利用でき
る。(5) Self-supporting property When the undiluted urethane solution is brought into contact with a cured urethane foam to newly foam it, they are adhered to each other and integrated into a continuous mass (lump) without weak line, which is used as a self-supporting structure. it can.
【００３０】(6) 耐水性 独立気泡を内蔵した発泡体であり、化学的に安定である
ため、水による劣化はない。(6) Water resistance Since it is a foam containing closed cells and is chemically stable, it is not deteriorated by water.
【００３１】(7) 強度特性 30〜40倍発泡の発泡ウレタンで、約2kgf／ｃｍ2 の一軸
圧縮強度があり、配合によりさらに大きな強度の発泡体
を形成でき、盛土材料としての必要強度は十分である。(7) Strength characteristics It is a urethane foam that is 30 to 40 times foamed and has a uniaxial compressive strength of about 2 kgf / cm 2 , and it is possible to form a foam of even greater strength by blending it, and the necessary strength as an embankment material is sufficient. Is.
【００３２】(8) 透水性 独立気泡の発泡体の場合、透水性はない。(8) Water permeability In the case of a closed cell foam, there is no water permeability.
【００３３】(9) 耐熱性 ８０℃以下では、通常の使用に問題はない。(9) Heat resistance Below 80 ° C, there is no problem in normal use.
【００３４】(10)耐薬品性 一般的に酸・アルカリに抵抗性を持ち、ガソリンや灯油
等にも溶解しない。(10) Chemical resistance Generally, it has resistance to acids and alkalis and does not dissolve in gasoline or kerosene.
【００３５】(11)衝撃吸収性 良好な衝撃吸収性を持つ。(11) Shock Absorbing Property It has a good shock absorbing property.
【００３６】また、ウレタンに骨材を混入して発泡ウレ
タン層２を形成することにより、高価なウレタンの使用
量を減量させると共に、強度を増大させることができ
る。By forming the urethane foam layer 2 by mixing the aggregate with urethane, the amount of expensive urethane used can be reduced and the strength can be increased.
【００３７】この際、骨材としては、産業廃棄物である
発泡スチロール片、各種プラスチック片、タイヤ片、及
び木材片等を有効利用することも、また、コンクリート
塊、アスファルト塊、軽石、及び砕石等の内、少なくと
も一種類を使用することもできる。At this time, as the aggregate, it is possible to effectively utilize styrene foam pieces, various plastic pieces, tire pieces, wood pieces, etc., which are industrial wastes, and concrete lumps, asphalt lumps, pumice stones, crushed stones, etc. Of these, at least one kind can be used.
【００３８】図２は、本発明に係わる第２実施例として
の軽量盛土Ａの施工フロー図であり、かかる施工フロー
図を参照して、軽量盛土工法を説明する。FIG. 2 is a construction flow chart of a lightweight embankment A as a second embodiment according to the present invention. The lightweight embankment construction method will be described with reference to the construction flow chart.
【００３９】 図２（イ）に示すように、盛土構築場
所Ｇを必要に応じて掘削し、整地する。As shown in FIG. 2A, the embankment building place G is excavated as necessary to level the ground.
【００４０】 図２（ロ）に示すように、整地した盛
土構築場所Ｇ上に一定厚の砂層を形成したり、透水シー
トを敷設して、透水層１を形成する。As shown in FIG. 2B, a water permeable layer 1 is formed by forming a sand layer of a certain thickness or laying a water permeable sheet on the ground embankment construction place G that has been leveled.
【００４１】 図２（ハ）に示すように、補強材４と
しての鉄筋等を枠組みして配置した後、透水層１上に硬
質ウレタン原液をウレタン噴出装置・注入装置（図示せ
ず）により噴出・注入させると共に発泡させて、一定高
さの発泡ウレタン層２を形成する。As shown in FIG. 2C, after arranging the reinforcing bars or the like as the reinforcing member 4 in a framed manner, the hard urethane undiluted solution is spouted onto the water permeable layer 1 by a urethane spouting device / injecting device (not shown). -Inject and foam to form the urethane foam layer 2 having a constant height.
【００４２】 図２（ニ）（ホ）に示すように、一定
高さの発泡ウレタン層２を階段状に順次積層発泡させて
一体化し、所定高さの一体化した発泡ウレタン層２を形
成する。As shown in FIGS. 2D and 2E, urethane foam layers 2 having a constant height are sequentially laminated and foamed in a stepwise manner to be integrated to form an integrated urethane foam layer 2 having a predetermined height. .
【００４３】 図２（ヘ）に示すように、発泡ウレタ
ン層２の表面に、土砂を一定の厚さに盛って、盛土表層
３を形成する。As shown in FIG. 2F, the embankment surface layer 3 is formed on the surface of the urethane foam layer 2 by laying earth and sand to a constant thickness.
【００４４】このようにして、発泡ウレタン層２中に補
強材４としての鉄筋等を配設することにより、軽量の盛
土Ａの強度を増大させることができるようにしている。In this way, by arranging the reinforcing bars or the like as the reinforcing member 4 in the urethane foam layer 2, the strength of the lightweight embankment A can be increased.
【００４５】この際、補強材４としては、鉄筋・金網・
メッシュ・各種土木用シート・ガラス繊維・有機繊維等
を使用することができる。At this time, the reinforcing member 4 includes reinforcing bars, wire mesh,
It is possible to use mesh, various civil engineering sheets, glass fibers, organic fibers, and the like.
【００４６】図３は、本発明に係わる第３実施例として
の軽量盛土Ａの施工フロー図であり、かかる施工フロー
図を参照して、軽量盛土工法を説明する。FIG. 3 is a construction flow chart of a lightweight embankment A as a third embodiment according to the present invention. The lightweight embankment construction method will be described with reference to the construction flow chart.
【００４７】 図３（イ）に示すように、盛土構築場
所Ｇを必要に応じて掘削し、整地する。As shown in FIG. 3A, the embankment construction site G is excavated as necessary to level the ground.
【００４８】 図３（ロ）に示すように、整地した盛
土構築場所Ｇ上に一定厚の砂層を形成したり、透水シー
トを敷設して、透水層１を形成する。As shown in FIG. 3B, a water-permeable layer 1 is formed by forming a sand layer of a certain thickness or laying a water-permeable sheet on the ground embankment construction place G that has been leveled.
【００４９】 図３（ハ）に示すように、透水層１上
に発泡スチロールブロック５を階段状に複数段載置し、
同発泡スチロール５の周囲および上部に硬質ウレタン原
液をウレタン噴出装置・注入装置（図示せず）により噴
出・注入させると共に発泡させて接着一体化し、一定高
さの発泡スチロールブロック５を内包する発泡ウレタン
層２を形成する。As shown in FIG. 3C, a plurality of styrofoam blocks 5 are placed on the water permeable layer 1 in a stepwise manner,
A urethane urethane raw material 2 is formed by spraying and injecting a hard urethane stock solution around and above the styrofoam 5 with a urethane ejection device / injection device (not shown), and foaming and adhering them together to form a styrene foam block 5 of a certain height. To form.
【００５０】 図３（ニ）に示すように、一定高さ発
泡スチロールブロック５を内包する発泡ウレタン層２を
階段状に順次積層発泡させて一体化し、所定高さの一体
化した発泡スチロールブロック５を内包する発泡ウレタ
ン層２を形成する。As shown in FIG. 3D, the urethane foam layer 2 enclosing the styrofoam block 5 having a constant height is sequentially laminated and foamed in a stepped manner to be integrated, and the styrofoam block 5 having a predetermined height is incorporated. The urethane foam layer 2 is formed.
【００５１】 図３（ホ）に示すように、発泡ウレタ
ン層２の表面に、土砂を一定の厚さに盛って、盛土表層
３を形成する。As shown in FIG. 3 (e), the embankment surface layer 3 is formed by laying earth and sand on the surface of the urethane foam layer 2 to a constant thickness.
【００５２】このようにして、軽量盛土Ａの軽量性・一
体化を確保したまま、高価なウレタンの使用を大幅に削
減できるようにしている。In this way, it is possible to greatly reduce the use of expensive urethane while ensuring the lightweightness and integration of the lightweight embankment A.
【００５３】この際、発泡スチロールブロックは、単位
体積重量が約 0.02g／ｃｍ3 と超軽量（土砂・コンクリ
ートの約1/100 ）で自立性があり、人力での積み重ねが
可能で施工性が良い。At this time, the Styrofoam block has a unit volume weight of about 0.02 g / cm 3 and is super lightweight (about 1/100 of earth and sand / concrete), is self-sustaining, and can be stacked manually and has good workability. .
【００５４】[0054]
【発明の効果】本発明によれば、次のような効果が得ら
れる。According to the present invention, the following effects can be obtained.
【００５５】 ウレタン発泡原液を現場で発泡させ
て、盛土の大半を占める発泡ウレタン層を形成すること
ができるために、施工が迅速かつ簡単に行なえると共
に、盛土の重量を大幅に軽減させることができる。この
重量軽減により、基礎地盤が軟弱であったり地すべりの
危険性がある場合にも、地盤改良等種々の対策工法が不
必要となり、工期および施工費を削減することができ
る。Since the urethane foaming undiluted solution can be foamed on site to form the urethane foam layer that occupies most of the embankment, the construction can be performed quickly and easily, and the weight of the embankment can be significantly reduced. it can. Due to this weight reduction, even when the foundation ground is soft or there is a risk of landslide, various countermeasure construction methods such as ground improvement are unnecessary, and the construction period and construction cost can be reduced.
【００５６】 発泡ウレタンは、構築場所の形状にな
じみ接着一体化した構造体となるため、地盤成形が簡単
で発泡スチロールブロックを積層する工法（ＥＰＳ工
法）に必要なコンクリート床版の施工や筋結材が不要と
なり、施工性が良い。Since the urethane foam is a structure that fits into the shape of the construction site and is bonded and integrated, it is easy to mold the ground and the construction of concrete floor slabs and bracing materials necessary for the method of stacking styrofoam blocks (EPS method) Is unnecessary and the workability is good.
【００５７】また、石油類に対する対策も不要で、施工
性が良い。Further, no measure for petroleum is required and the workability is good.
【００５８】 発泡ウレタンは、各部の用途に応じて
適切な密度・強度のものを任意に使用でき、さらにそれ
らを連続一体化することができる。As the urethane foam, one having an appropriate density and strength can be arbitrarily used according to the use of each part, and further, they can be continuously integrated.
【００５９】 ウレタンに骨材を混入することによ
り、複合一体化した発泡ウレタン混合層を形成すること
ができる。このことにより、高価なウレタン使用量を減
量することができると共に、各部の用途に応じて適切な
密度・強度の発泡ウレタン混合体を選定して使用するこ
とができる。By mixing an aggregate with urethane, it is possible to form a composite urethane foam mixed layer. This makes it possible to reduce the amount of expensive urethane used and to select and use a urethane foam mixture having appropriate density and strength according to the application of each part.
【００６０】 上記において、骨材として、各種発
泡樹脂片、各種プラスチック片、タイヤ片、木材片、コ
ンクリート塊、アスファルト塊、軽石、及び砕石等の内
の少なくとも一種類を使用することができ、産業廃棄物
を活用できる。In the above, as the aggregate, at least one of various foamed resin pieces, various plastic pieces, tire pieces, wood pieces, concrete lumps, asphalt lumps, pumice stones, crushed stones, etc. can be used. Waste can be utilized.
【００６１】 発泡ウレタン層には、鉄筋・金網・メ
ッシュ・各種土木用シート・ガラス繊維・有機繊維等の
補強材を容易に配設することができ、強度増加を図れ
る。In the urethane foam layer, reinforcing materials such as reinforcing bars, wire mesh, mesh, various types of civil engineering sheets, glass fibers, and organic fibers can be easily arranged, and the strength can be increased.
【００６２】 発泡ウレタン層中に、発泡スチロール
ブロック等の軽量体を配設して複合一体化することがで
きるために、盛土の軽量性を確保したまま、高価な発泡
ウレタンの使用量を大幅に削減して、施工費を軽減させ
ることができる。Since a lightweight body such as a styrofoam block can be disposed in the urethane foam layer for composite integration, the amount of expensive urethane foam used is significantly reduced while maintaining the lightweightness of the embankment. Therefore, the construction cost can be reduced.
【図１】本発明に係わる軽量盛土工法の、第１実施例と
しての施工フロー図。FIG. 1 is a construction flow chart as a first embodiment of a lightweight embankment method according to the present invention.
【図２】第２実施例としての施工フロー図。FIG. 2 is a construction flow chart as a second embodiment.
【図３】第３実施例としての施工フロー図。FIG. 3 is a construction flow chart as a third embodiment.
Ａ 軽量盛土 １ 透水層 ２ 発泡ウレタン層 ３ 盛土表層 ４ 補強材 ５ 発泡スチロールブロック等の軽量材 Ｍ ウレタン発泡原液噴出装置・注入装置 A Lightweight embankment 1 Water permeable layer 2 Urethane foam layer 3 Embankment surface layer 4 Reinforcement material 5 Lightweight material such as styrofoam block M Urethane foaming stock solution injection device / injection device
Claims (5)
ン発泡原液を発泡させて発泡ウレタン層を形成し、同発
泡ウレタン層の表面に一定の厚さの土砂等を盛って、発
泡ウレタン層を内蔵する盛土を形成することを特徴とす
る軽量盛土工法。1. A urethane foaming undiluted solution is foamed to form a urethane foam layer at a molded embankment construction site, and a surface of the urethane foam layer is filled with earth and sand or the like with a certain thickness to incorporate the urethane foam layer. A lightweight embankment method characterized by forming an embankment.
層を形成したことを特徴とする請求項１記載の軽量盛土
工法。2. The lightweight embankment method according to claim 1, wherein the urethane foam is mixed with an aggregate to form a urethane foam layer.
スッチク片、タイヤ片、木材片、コンクリート塊、アス
ファルト塊、軽石、及び砕石等の内の少なくとも一種類
を使用したことを特徴とする請求項２記載の軽量盛土工
法。3. At least one of various foamed resin pieces, various plastic pieces, tire pieces, wood pieces, concrete lumps, asphalt lumps, pumice stones, and crushed stones is used as the aggregate. Item 2. A lightweight embankment method.
とを特徴とする請求項１〜３のいずれかに記載の軽量盛
土工法。4. The lightweight embankment method according to claim 1, wherein a reinforcing material is provided in the urethane foam layer.
ックを配設したことを特徴とする請求項１〜３のいずれ
かに記載の軽量盛土工法。5. The lightweight embankment method according to claim 1, wherein a styrofoam block is provided in the urethane foam layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4188396A JP2774416B2 (en) | 1992-07-15 | 1992-07-15 | Lightweight embankment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4188396A JP2774416B2 (en) | 1992-07-15 | 1992-07-15 | Lightweight embankment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0633438A true JPH0633438A (en) | 1994-02-08 |
| JP2774416B2 JP2774416B2 (en) | 1998-07-09 |
Family
ID=16222911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4188396A Expired - Lifetime JP2774416B2 (en) | 1992-07-15 | 1992-07-15 | Lightweight embankment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2774416B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000017663A (en) * | 1998-07-06 | 2000-01-18 | Inoac Corporation:Kk | Lightweight bank structure |
| US7901160B2 (en) * | 2006-04-14 | 2011-03-08 | Siltshield, Llc | Environmental barrier device |
| JPWO2015068760A1 (en) * | 2013-11-06 | 2017-03-09 | アップコン株式会社 | How to improve the ground |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62197512A (en) * | 1986-02-24 | 1987-09-01 | Dow Kako Kk | Improving work for soft ground |
| JPS62268414A (en) * | 1986-05-16 | 1987-11-21 | Dow Kako Kk | Improving work of soft ground |
| JPH04106218A (en) * | 1990-08-27 | 1992-04-08 | Shimizu Corp | Light-weight ground placed on soft ground and its construction |
-
1992
- 1992-07-15 JP JP4188396A patent/JP2774416B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62197512A (en) * | 1986-02-24 | 1987-09-01 | Dow Kako Kk | Improving work for soft ground |
| JPS62268414A (en) * | 1986-05-16 | 1987-11-21 | Dow Kako Kk | Improving work of soft ground |
| JPH04106218A (en) * | 1990-08-27 | 1992-04-08 | Shimizu Corp | Light-weight ground placed on soft ground and its construction |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000017663A (en) * | 1998-07-06 | 2000-01-18 | Inoac Corporation:Kk | Lightweight bank structure |
| US7901160B2 (en) * | 2006-04-14 | 2011-03-08 | Siltshield, Llc | Environmental barrier device |
| JPWO2015068760A1 (en) * | 2013-11-06 | 2017-03-09 | アップコン株式会社 | How to improve the ground |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2774416B2 (en) | 1998-07-09 |
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