JPH0620502U - Underpass structure in road pavement - Google Patents
Underpass structure in road pavementInfo
- Publication number
- JPH0620502U JPH0620502U JP3990092U JP3990092U JPH0620502U JP H0620502 U JPH0620502 U JP H0620502U JP 3990092 U JP3990092 U JP 3990092U JP 3990092 U JP3990092 U JP 3990092U JP H0620502 U JPH0620502 U JP H0620502U
- Authority
- JP
- Japan
- Prior art keywords
- roadbed
- corrugated steel
- laid
- sand
- crushed stone
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 239000004575 stone Substances 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims 1
- 238000005096 rolling process Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 10
- 239000002344 surface layer Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009490 roller compaction Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 102100035241 3-oxoacyl-[acyl-carrier-protein] reductase Human genes 0.000 description 1
- 101710138614 3-oxoacyl-[acyl-carrier-protein] reductase Proteins 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229920006312 vinyl chloride fiber Polymers 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Abstract
(57)【要約】
【目的】 波形鋼板を使用した路盤構造の一般舗装路盤
への適用を可能にする。
【構成】 路床１の上に砂２を介して波形鋼板３を敷
く。波形鋼板３の凹部に砂７を詰め、その上に繊維シー
ト８を平たく敷く。繊維シート８の上に粒調砕石９を敷
き、転圧を加える。転圧の際に波形鋼板３の弾性歪が粒
調砕石９に伝わらず、そのクラックが防止される。
(57) [Summary] [Purpose] It enables the application of the roadbed structure using corrugated steel sheets to general paved roadbeds. [Structure] A corrugated steel plate 3 is laid on a roadbed 1 with sand 2 interposed therebetween. Sand 7 is filled in the concave portion of the corrugated steel plate 3, and the fiber sheet 8 is laid flat thereon. The crushed stone 9 is laid on the fiber sheet 8 and a rolling pressure is applied. The elastic strain of the corrugated steel sheet 3 is not transmitted to the grain-crushed stone 9 during the rolling, and the crack thereof is prevented.
Description
【０００１】[0001]
本考案は、道路舗装における下層路盤構造に関し、特に波形鋼板を用いた下層 路盤構造に関する。 The present invention relates to a lower roadbed structure for road pavement, and more particularly to a lower roadbed structure using corrugated steel plates.
【０００２】[0002]
アスファルトによる道路舗装の路盤構造として、波形鋼板を用いたものが実公 昭５０−３０１６４号公報に開示されている。該路盤構造は、図２に示すように 、路床１の上に砂２を敷き、その上に波形鋼板３を敷き並べ、該波形鋼板３の上 に消石灰安定処理材４を敷きローラ転圧を加えて形成した下層路盤Ａを有する。 下層路盤Ａの上には、アスファルト安定処理材５を敷き転圧を加えて上層路盤Ｂ を形成し、更にその上にアスファルトコンクリート６により表層Ｃを形成する。 As a roadbed structure for asphalt road pavement, a corrugated steel plate structure is disclosed in Japanese Utility Model Publication No. 50-30164. As shown in FIG. 2, the roadbed structure is as follows: sand 2 is laid on the roadbed 1, corrugated steel plates 3 are laid on top of it, and slaked lime stabilization material 4 is laid on the corrugated steel plates 3 to roll the roller. It has the lower layer roadbed A formed by adding. On the lower layer roadbed A, the asphalt stabilizing material 5 is laid, and a rolling pressure is applied to form an upper layer roadbed B. Further, a surface layer C is formed on it by the asphalt concrete 6.
【０００３】[0003]
このような波形鋼板を用いた路盤構造においては、安定処理材の安定性が良く 、また路盤材料の厚みを軽減でき工費工期の節減を図ることができる。波形鋼板 ３上の消石灰安定処理材４は、経済的には一般的な下層路盤材である粒調砕石に 代えることが望まれる。しかしながら、波形鋼板３上の材料が粒調砕石の場合、 その厚みが薄いと、ローラー転圧の際に波形鋼板３がその形状故にペコペコと歪 み、その弾性歪により鋼板上の粒調砕石層にクラック１０が入り、これが上層路 盤Ｂや表層Ｃにその転圧により連れ込まれることが多い。そのため、この構造は 鋼板上の路盤材料の厚みを厚くする必要がある軟弱路床における道路舗装にしか 使用することができず、一般舗装路盤では路盤材料の厚み軽減の効果を享受でき なかった。 In the roadbed structure using such a corrugated steel sheet, the stability of the stabilizing material is good, and the thickness of the roadbed material can be reduced to reduce the construction cost and the construction period. It is desirable that the slaked lime stabilizing material 4 on the corrugated steel sheet 3 is economically replaced with grain-crushed stone which is a general lower layer roadbed material. However, when the material on the corrugated steel plate 3 is a grain-crushed stone, if the thickness is thin, the corrugated steel plate 3 is distorted due to its shape when the roller is compacted, and the elastic strain causes the grain-crushed stone layer on the steel plate to be distorted. In many cases, a crack 10 is introduced into the upper layer roadbed B or the surface layer C due to the rolling pressure thereof. Therefore, this structure can be used only for road paving on soft roadbeds where the thickness of the roadbed material on the steel plate needs to be increased, and the effect of reducing the thickness of the roadbed material cannot be enjoyed on the general paved roadbed.
【０００４】 本考案の目的は、ローラー転圧によるクラックを防いで、波形鋼板を一般舗装 に使用できるようにした道路舗装における下層路盤構造を提供することにある。An object of the present invention is to provide a lower layer roadbed structure for road pavement in which cracks due to roller compaction are prevented and corrugated steel sheets can be used for general pavement.
【０００５】[0005]
本考案の道路舗装における下層路盤構造は、路床上に砂を敷き、その上に波形 鋼板を敷き並べ、該波形鋼板の凹部内に砂を充填してその上に繊維シートを敷き 、更にその上に砕石を敷きローラ転圧を加えて形成してなることを特徴とする。 The lower layer roadbed structure in the road pavement of the present invention is constructed by laying sand on the roadbed, laying corrugated steel sheets on it, filling the recesses of the corrugated steel sheet with sand, and laying a fiber sheet on it. It is characterized in that it is formed by crushing stones and applying roller compaction.
【０００６】[0006]
波形鋼板の凹部内に砂を充填することにより、その上に繊維シートが平たく敷 かれる。平たく敷かれた繊維シートは、ローラー転圧による波形鋼板の弾性歪が その上の砕石層に伝わるのを阻止し、また弾性歪を緩和する。即ち、平たく敷か れた繊維シートの下では、波形鋼板が砕石層に対して縁切りされ、波形鋼板のみ がローラー転圧によって勝手に動くのである。従って、砕石層が薄い場合もこれ にクラックが入るのが防止される。 By filling the recesses in the corrugated steel sheet with sand, the fiber sheet is laid flat. The flatly laid fibrous sheet blocks the elastic strain of the corrugated steel sheet due to the roller compaction from being transmitted to the crushed stone layer on the corrugated steel sheet, and also relaxes the elastic strain. That is, under the flatly laid fiber sheet, the corrugated steel sheet is trimmed with respect to the crushed stone layer, and only the corrugated steel sheet moves freely by roller rolling. Therefore, even if the crushed stone layer is thin, it is prevented from cracking.
【０００７】[0007]
以下に本考案の実施例を図面に基づいて説明する。図１は本考案の一実施例を 示す路盤（Ｃ交通，ＣＢＲ４，ＴＡ３２）の断面図である。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a roadbed (C traffic, CBR4, TA32) showing an embodiment of the present invention.
【０００８】 平坦に均した路床１の上に砂２を約１０ｃｍの厚さに敷いてある。その上に、 波形鋼板３を道路方向に対して横向きに敷いてある。波形鋼板３は、厚さが1.６ ｍｍ、波形が半円弧状でそのピッチが５０ｍｍ、高さが２５ｍｍのもので、波形 が下向き、即ち凹部を上向きにして用い、長手方向に約１０ｃｍ重ね合わせ、幅 方向にはリブを重ねて隙間なく並べられている。Sand 2 is laid in a thickness of about 10 cm on a flat roadbed 1. A corrugated steel plate 3 is laid on it in a lateral direction with respect to the road direction. The corrugated steel plate 3 has a thickness of 1.6 mm, a corrugated semi-circular shape, a pitch of 50 mm and a height of 25 mm. The corrugated steel plate 3 is used downward, that is, the concave portion is directed upward, and the corrugated steel sheet is overlapped by about 10 cm in the longitudinal direction. In addition, ribs are overlapped in the width direction so that they are arranged without any gap.
【０００９】 波形鋼板３の凹部内に砂７を中詰めし、その上に繊維シート８を平たく敷いて ある。繊維シート８は、例えばポリプロピレン製繊維シート等を使用する。そし て、繊維シート８の上に粒調砕石９を敷き、これをタイヤローラー、マカダムロ ーラー等で約１２ｃｍの厚さに転圧することにより、下層路盤Ａを形成してある 。Sand 7 is filled in the concave portion of the corrugated steel plate 3, and a fiber sheet 8 is laid flat thereon. As the fiber sheet 8, for example, a polypropylene fiber sheet or the like is used. Then, a crushed stone 9 is laid on the fiber sheet 8 and is rolled into a thickness of about 12 cm by a tire roller, a macadam roller or the like to form a lower layer roadbed A.
【００１０】 下層路盤Ａの上にアスファルト安定処理材５を敷きローラ転圧を加えて約１０ ｃｍの上層路盤Ｂを形成してある。その上に更にアスファルトコンクリート６に より表層Ｃを形成してある。An asphalt stabilizing material 5 is laid on the lower layer roadbed A, and roller rolling pressure is applied to form an upper layer roadbed B of about 10 cm. Further, a surface layer C is formed by using asphalt concrete 6.
【００１１】 このような路盤構造においては、波形鋼板３の凹部内に砂７を詰め、その上に 繊維シート８を平たく敷いてから粒調砕石９を敷いた下層路盤Ａが用いれている ので、粒調砕石９をローラ転圧する際に転圧による波形鋼板３の弾性歪が粒調砕 石９の締固め層に伝わらず、この層にクラックが生じない。従って、上層路盤Ｂ および表層Ｃの転圧の際にもクラックの連れ込みがなく、粒調砕石９の層厚が１ ２ｃｍと一般舗装路盤並に薄くされているにもかかわらず、完全な施工を行うこ とができる。In such a roadbed structure, the lower layer roadbed A in which the sand 7 is filled in the concave portion of the corrugated steel plate 3, the fiber sheet 8 is laid flat thereon, and then the grain-crushed stones 9 are laid, is used. The elastic strain of the corrugated steel sheet 3 due to the rolling when the grain-crushed stone 9 is rolled is not transmitted to the compaction layer of the grain-crushed stone 9, and cracks do not occur in this layer. Therefore, even when the upper layer roadbed B and the surface layer C are compacted, no cracks are brought in and the layer thickness of the grain-crushed stone 9 is 12 cm, which is as thin as a general paved roadbed, but complete construction is possible. It can be carried out.
【００１２】 表１は本考案の下層路盤構造を用いた路盤の性能を、図３に示す一般舗装路盤 と比較して示したものである。本考案の下層路盤構造を用いた路盤は、一般舗装 路盤に比して路盤厚を薄くできる。Table 1 shows the performance of the roadbed using the lower layer roadbed structure of the present invention in comparison with the general paved roadbed shown in FIG. The roadbed using the lower layer roadbed structure of the present invention can have a smaller roadbed thickness than general pavement roadbeds.
【００１３】[0013]
【表１】 [Table 1]
【００１４】 なお、繊維シートは上記実施例では、ポリプロピレン製繊維のものを用いたが 、これに限らず例えば塩ビ製繊維のものなどでもよく、一般に使用されている遮 水シート、養生シート、荷物カバーシート類を用いることもできる。Although the fiber sheet is made of polypropylene fiber in the above embodiment, it is not limited to this and may be made of vinyl chloride fiber, for example. Generally used water-blocking sheet, curing sheet, luggage Cover sheets can also be used.
【００１５】 波形鋼板についても、ピッチが２００ｍｍ、高さが２５ｍｍのものでもよく、 あるいは角波形状のキーストンプレート、又はＶ型等の比較的小さな凹部をバラ ンスよく設けたものなどを使用することができる。The corrugated steel sheet may also have a pitch of 200 mm and a height of 25 mm, or use a square wave-shaped keystone plate, or a V-shaped one having a relatively small concave portion with good balance. You can
【００１６】[0016]
以上の説明から明らかなように、本考案の道路舗装における下層路盤構造は、 波形鋼板を用いた場合の鋼板の弾性歪によるクラックを防止できるので、一般舗 装路盤においても、その路盤厚の低減による舗装工費および工期の節減効果を享 受できる。 As is clear from the above description, the lower layer roadbed structure for road pavement of the present invention can prevent cracks due to elastic strain of the steel plate when corrugated steel plates are used, so that the roadbed thickness can be reduced even in general pavement roadbeds. You can enjoy the effect of saving pavement cost and construction period.
【図１】本考案の一実施例を示す舗装路盤の断面図であ
る。FIG. 1 is a sectional view of a paved roadbed showing an embodiment of the present invention.
【図２】波形鋼板を使用した従来路盤の断面図である。FIG. 2 is a cross-sectional view of a conventional roadbed that uses corrugated steel plates.
【図３】一般舗装路盤の断面図である。FIG. 3 is a cross-sectional view of a general paved roadbed.
１ 路床 ２，７ 砂 ３ 波形鋼板 ８ 繊維シート ９ 粒調砕石 Ａ 下層路盤 Ｂ 上層路盤 Ｃ 表層 1 Roadbed 2,7 Sand 3 Corrugated steel plate 8 Fiber sheet 9 Grain-crushed stone A Lower roadbed B Upper roadbed C Surface layer
───────────────────────────────────────────────────── フロントページの続き (72)考案者 松岡 政幸 兵庫県尼崎市扶桑町１番21号 住金鋼材工 業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Masayuki Matsuoka 1-21 Fusocho, Amagasaki City, Hyogo Prefecture Sumikin Steel Works Co., Ltd.
Claims (1)
敷き並べ、該波形鋼板の凹部内に砂を充填してその上に
繊維シートを敷き、更にその上に砕石を敷きローラ転圧
を加えて形成してなることを特徴とする道路舗装におけ
る下層路盤構造。1. A sand is laid on a subgrade, a corrugated steel sheet is laid and arranged on the subbed, sand is filled in the concave portions of the corrugated steel sheet, a fiber sheet is laid on the sand, and crushed stone is laid on the sand. A lower roadbed structure for road pavement characterized by being formed by applying pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992039900U JP2514290Y2 (en) | 1992-05-18 | 1992-05-18 | Underpass structure in road pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992039900U JP2514290Y2 (en) | 1992-05-18 | 1992-05-18 | Underpass structure in road pavement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0620502U true JPH0620502U (en) | 1994-03-18 |
| JP2514290Y2 JP2514290Y2 (en) | 1996-10-16 |
Family
ID=12565842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992039900U Expired - Lifetime JP2514290Y2 (en) | 1992-05-18 | 1992-05-18 | Underpass structure in road pavement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2514290Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5113440A (en) * | 1974-07-23 | 1976-02-02 | Matsushita Electric Industrial Co Ltd | Gasuseigyosochi |
| JPS5257603A (en) * | 1975-11-04 | 1977-05-12 | Itsutoku Takamori | Ballast vibration preventive structure |
-
1992
- 1992-05-18 JP JP1992039900U patent/JP2514290Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5113440A (en) * | 1974-07-23 | 1976-02-02 | Matsushita Electric Industrial Co Ltd | Gasuseigyosochi |
| JPS5257603A (en) * | 1975-11-04 | 1977-05-12 | Itsutoku Takamori | Ballast vibration preventive structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2514290Y2 (en) | 1996-10-16 |
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