JPH10121403A - Preventing construction method for frost heaving of structure - Google Patents

Preventing construction method for frost heaving of structure

Info

Publication number
JPH10121403A
JPH10121403A JP8278448A JP27844896A JPH10121403A JP H10121403 A JPH10121403 A JP H10121403A JP 8278448 A JP8278448 A JP 8278448A JP 27844896 A JP27844896 A JP 27844896A JP H10121403 A JPH10121403 A JP H10121403A
Authority
JP
Japan
Prior art keywords
heat
ground
pavement
frost heave
granular material
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.)
Pending
Application number
JP8278448A
Other languages
Japanese (ja)
Inventor
Ichiro Nakajima
一郎 仲嶋
Kumiko Osugi
久美子 大杉
Toshiharu Fujisato
俊治 藤里
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry Co Ltd
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 Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP8278448A priority Critical patent/JPH10121403A/en
Publication of JPH10121403A publication Critical patent/JPH10121403A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

Landscapes

  • Road Paving Structures (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve durability and a reduce execution cost by spreading a thermal insulation granular body which is formed of a plurality of synthetic resin foam bodies solidified unitedly with a hydraulic binding material on a ground or a road floor, and spreadly providing a structure such as a pavement on the thermal insulation granular body. SOLUTION: A thermal insulation granular body 3 is produced in such a way as a hydraulic binding material such as cement, lime and plaster is kneaded in a synthetic resin foam body 4 which is spherically, polygonally and elliptically formed by foaming of polystyrene with a hydraulic material ratio kept within about 30%, and they are formed into a fixed shape and hardened. A pavement 1 is spreadly provided over the thermal insulation granular body 3 which is spread to a fixed thickness on a road floor 2 where the ground is excavated to a fixed depth. The pavement 1 may be formed of interlocking block tile besides asphalt and concrete. The thermal insulation granular body 3 may be applied to not only a road but also a sidewalk, a parking device, an open space and a tennis court. Thus, the destruction of the road due to freezing can be prevented, and moreover the cost of material and execution can be reduced.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】この発明は、寒冷地等におけ
る例えば道路等の舗装、鉄道の道床バラスト、建物の床
又は土間、あるいは建物等の基礎又はベース等の構造物
が、その下方の地盤の凍結によって盛り上がることを防
止する構造物の凍上防止工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement such as a road, a ballast ballast of a railway, a floor or a soil of a building, or a foundation or a base such as a building in a cold region or the like. The present invention relates to a method for preventing a structure from being raised due to freezing.

【０００２】[0002]

【従来の技術】従来のこの種の技術としては、例えば、
施工、敷設される構造物の下方における凍結深さ内の地
盤を砂等の凍上抑制材で置換する置換工法や、あるいは
構造物の下方に下砂層と上砂層に挟まれた断熱材層を設
ける断熱工法等が知られている。2. Description of the Related Art Conventional techniques of this kind include, for example,
Replacement method that replaces the ground within the freezing depth below the structure to be constructed and laid with sand or other frost heave suppression material, or provides a heat insulation material layer sandwiched between a lower sand layer and an upper sand layer below the structure Insulation methods and the like are known.

【０００３】図１０に示すように、例えば道路等の舗装
５１においては前記置換工法が一般的であり、地盤を所
定深さ掘削して路床２上に砂６等の凍上抑制材を敷いた
後、その上方に舗装５１が敷設される。As shown in FIG. 10, for example, in a pavement 51 such as a road, the above-described replacement method is generally used. The ground is excavated to a predetermined depth, and a frost-free material such as sand 6 is laid on the subgrade 2. After that, the pavement 51 is laid above it.

【０００４】また、図１１に示すように、鉄道の道床バ
ラスト６１においては前記断熱工法が多く採用されてお
り、地盤２を所定深さ掘削し、砂６、断熱材６２、砂６
を順に敷いた後、その上方に道床バラスト６１が敷設さ
れる。この道床バラスト６１の上面には枕木１２が埋設
され、更にこの枕木１２の上面にはレール１３が取付け
られる。[0004] As shown in FIG. 11, the above-mentioned heat insulation method is often used in a ballast 61 of a railway, and the ground 2 is excavated to a predetermined depth to obtain sand 6, heat insulating material 62, and sand 6.
Are sequentially laid, and then a ballast 61 is laid above it. A sleeper 12 is embedded on the upper surface of the ballast ballast 61, and a rail 13 is mounted on the upper surface of the sleeper 12.

【０００５】一方、図１２に示すように、建物の床又は
土間７１においては、例えば、地盤２上に割栗石７２、
断熱材６２を順に敷いた後、その上方にコンクリート等
が打設等されてコンクリート床等が敷設される。[0005] On the other hand, as shown in FIG.
After laying the heat insulating material 62 in order, concrete or the like is cast thereon, and a concrete floor or the like is laid.

【０００６】更に、図１３に示すように、建物等の基礎
８１又はベースにおいては、例えば、地盤２を凍結深さ
より深く掘削して割栗石７２を敷いた後、その上方に捨
てコンクリート３２等を介在させて基礎８１等が施工、
敷設される。Further, as shown in FIG. 13, in a foundation 81 or a base of a building or the like, for example, after excavating the ground 2 deeper than the freezing depth and laying a split stone 72 thereon, the discarded concrete 32 and the like are placed above it. Construction of foundation 81 etc. with interposition,
Be laid.

【０００７】[0007]

【発明が解決しようとする課題】しかしながら、上記の
ような砂６や断熱材６２等を用いる従来の構造物の凍上
防止工法では、凍上防止効果や強度等が十分でないの
で、手間やコストが多くかかるという問題点がある。However, in the conventional method for preventing frost heave of a structure using the sand 6 and the heat insulating material 62 as described above, the frost heave prevention effect and the strength are not sufficient, so that much labor and cost are required. There is such a problem.

【０００８】特に、上記のような道路等の舗装５１の凍
上防止工法においては、掘削深さＡを深くしなければな
らないので、前記凍上抑制材が多く必要であると共に、
残土も多くでるという問題点がある。In particular, in the method for preventing frost heave of the pavement 51 such as a road as described above, the excavation depth A must be increased, so that the frost heave suppression material is required in a large amount.
There is a problem that much soil remains.

【０００９】また、上記のような鉄道の道床バラスト６
１の凍上防止工法においては、前記断熱材６２の強度が
低いので、沈下のおそれがあるという問題点がある。そ
して、砂６、断熱材６２、砂６の３層を施工し、しかも
前記断熱材６２の敷設・施工は手作業であると共に、こ
の断熱材６２の目地処理も必要であるので、手間がかか
るという問題点がある。In addition, the ballast 6 for a railway bed as described above.
In the first method for preventing frost heave, there is a problem that the strength of the heat insulating material 62 is low, so that there is a possibility of sinking. Then, three layers of the sand 6, the heat insulating material 62 and the sand 6 are constructed, and the laying / construction of the heat insulating material 62 is a manual operation, and the joint processing of the heat insulating material 62 is also required. There is a problem.

【００１０】更に、上記のような建物の床又は土間７１
の凍上防止工法においては、前記断熱材６２の敷設・施
工が手作業であり、しかもその目地処理も必要であるの
で、手間がかかるという問題点がある。また、前記断熱
材６２の強度が小さいので大荷重はかけられないと共
に、この断熱材６２は吸水しないので、コンクリートを
打設した場合にその余剰水が抜けにくく、そのため床押
さえに長時間を要するという問題点がある。Further, the floor or the floor 71 of the building as described above is used.
In the frost heave prevention method, the laying and construction of the heat insulating material 62 is a manual operation, and furthermore, the joint treatment is also required. In addition, since the heat insulating material 62 has a low strength, a large load cannot be applied, and since the heat insulating material 62 does not absorb water, surplus water hardly escapes when concrete is cast, and it takes a long time to hold down the floor. There is a problem.

【００１１】加えて、上記のような建物等の基礎８１又
はベースの凍上防止工法においては、基礎８１等の底面
を凍結深さより深くする必要があり、そのため基礎８１
等の高さも高くなるので、コストが高いという問題点が
ある。In addition, in the above-described frost heave prevention method for the foundation 81 of a building or the like, it is necessary to make the bottom surface of the foundation 81 or the like deeper than the freezing depth.
And so on, so that the cost is high.

【００１２】この発明は、以上のような問題点に鑑みて
なされたものであり、手間を省いてコストダウンを図る
ことができる構造物の凍上防止工法を提供することを目
的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for preventing frost heave of a structure, which can save labor and cost.

【００１３】[0013]

【課題を解決するための手段】上記目的を達成するため
の手段とするところは、第１に、地盤又は路床上に、複
数の合成樹脂発泡体を水硬性結合材で固めて一体とした
断熱性粒状体を敷いてから、その上方に構造物を敷設す
ることにある。Means for achieving the above object are as follows. First, a plurality of synthetic resin foams are fixed on a ground or a subgrade with a hydraulic binder to form an integrated heat insulating material. After laying the granular material, the structure is laid above the granular material.

【００１４】第２に、前記構造物が道路等の舗装である
ことにある。Second, the structure is a pavement such as a road.

【００１５】第３に、前記構造物が鉄道の道床バラスト
であることにある。Thirdly, the structure is a ballast for a railway.

【００１６】第４に、前記地盤又は路床と断熱性粒状体
の間に砂等の凍上抑制材を介在させることにある。Fourth, a frost heave suppressing material such as sand is interposed between the ground or the subgrade and the heat insulating granular material.

【００１７】第５に、前記構造物が建物の床又は土間で
あることにある。Fifth, the structure is a floor or a dirt floor of a building.

【００１８】第６に、前記地盤と断熱性粒状体の間に防
湿フィルムを介在させることにある。Sixth, a moisture-proof film is interposed between the ground and the heat-insulating granular material.

【００１９】第７に、前記構造物が建物等の基礎又はベ
ースであることにある。Seventh, the structure is a foundation of a building or the like.

【００２０】第８に、前記基礎又はベースを敷設した
後、砂等の凍上抑制材で埋め戻すことにある。Eighth, after the foundation or the base is laid, the base or the base is backfilled with a frost heave suppressing material such as sand.

【００２１】[0021]

【発明の実施の形態】以下、この発明の実施形態を図面
に基づいて説明する。なお、既述の従来技術と同じ構成
については、同一符号を付してその説明を省略する。Embodiments of the present invention will be described below with reference to the drawings. Note that the same components as those of the above-described conventional technology are denoted by the same reference numerals and description thereof is omitted.

【００２２】第１実施形態に係る構造物の凍上防止工法
は、図１に示すように、前記構造物として道路等の舗装
１を敷設する場合に使用される。即ち、地盤を所定深さ
で掘削して路床２上に、断熱性粒状体３を所定厚さとな
るように敷いてから、その上方に道路等の舗装１を敷設
するものである。The structure frost heave prevention method according to the first embodiment is used when a pavement 1 such as a road is laid as the structure as shown in FIG. That is, the ground is excavated at a predetermined depth, the heat-insulating granular material 3 is laid on the subgrade 2 so as to have a predetermined thickness, and the pavement 1 such as a road is laid thereabove.

【００２３】前記断熱性粒状体３は、図２に示すよう
に、複数の合成樹脂発泡体４を水硬性結合材５で固めて
一体としたものである。As shown in FIG. 2, the heat-insulating granular material 3 is obtained by solidifying a plurality of synthetic resin foams 4 with a hydraulic binder 5 and integrating them.

【００２４】この断熱性粒状体３は、製造過程で種々の
大きさのものを製造することができるが、ここで使用す
る大きさとしては、１〜４５ｍｍ程度、好ましくは２．
５〜２０ｍｍ程度、更に好ましくは５〜１５ｍｍ程度の
範囲のものであれば十分であり、特に限定されるもので
はない。また、その外形状は球形に限定されることな
く、種々の多角体や長円形体等であってもよいが、球形
の場合には応力に対して強く割れにくい利点があり、ま
た、種々の多角体の場合には隣接するものとの隙間が埋
まり、断熱効果がより向上する利点がある。The heat-insulating granular material 3 can be manufactured in various sizes in the manufacturing process. The size used here is about 1 to 45 mm, preferably 2.45 mm.
A range of about 5 to 20 mm, more preferably about 5 to 15 mm is sufficient and is not particularly limited. In addition, the outer shape is not limited to a spherical shape, and may be various polygons or oval shapes, but in the case of a spherical shape, there is an advantage that it is strongly resistant to stress and hard to crack. In the case of a polygon, there is an advantage that a gap between adjacent polygons is filled and the heat insulating effect is further improved.

【００２５】前記合成樹脂発泡体４は、球形又は略球形
のビーズである場合には断熱性粒状体３に圧力や応力が
作用した時にその力が分散されるので強度の高いものと
なる利点があるが、特にビーズに限定されるものではな
く、合成樹脂発泡体を粉砕して得られる種々の形状の粉
砕品やその他の異形のものであってもよい。また、その
原材料としては、例えばポリスチレンをその真比重が
０．０２〜０．２程度の範囲となるように発泡させたも
のである場合にはその材質上強度が高く、しかも水硬性
結合材５との混練時においても潰れることがなく、ま
た、原材料を多く使用することもないので経済的なもの
となる利点がある。しかし、他の種類の原材料又は真比
重の異なるものを使用しても、その効果の点において多
少劣るものの使用することは可能である。更に、合成樹
脂発泡体４の平均径が０．１〜１．５ｍｍ程度の範囲の
ものを使用した場合には、断熱性粒状体３の製造過程に
おける水硬性結合材５との混練時にこの水硬性結合材５
と混じり易いので、製造が容易となる利点がある。When the synthetic resin foam 4 is a spherical or substantially spherical bead, the strength is high because the force is dispersed when a pressure or a stress is applied to the heat-insulating granular material 3. However, it is not particularly limited to beads, but may be pulverized products of various shapes obtained by pulverizing a synthetic resin foam or other irregular shapes. Further, as a raw material, for example, when polystyrene is foamed so that its true specific gravity is in the range of about 0.02 to 0.2, the material has high strength, and the hydraulic binder 5 There is an advantage that it is economical because it is not crushed at the time of kneading and does not use a lot of raw materials. However, it is possible to use other types of raw materials or those having different true specific gravities, although their effects are somewhat inferior. Further, when the synthetic resin foam 4 having an average diameter in the range of about 0.1 to 1.5 mm is used, this water is used during kneading with the hydraulic binder 5 in the production process of the heat insulating granular material 3. Hard binder 5
It is easy to mix, so that there is an advantage that the production becomes easy.

【００２６】前記水硬性結合材５は、例えばセメント、
石灰、石膏等であるが、このうちのセメントが強度的に
強く、耐水性に優れ、また比較的安価であるので、最も
望ましい。このセメントとしては、例えば、普通ポルト
ランドセメントや早強ポルトランドセメント等のポルト
ランドセメント以外に、高炉セメント、シリカセメン
ト、フライアッシュセメント等を用いることができ、用
途によって使い分ければよい。この水硬性結合材５の水
結合材比は、できるだけ３０％以内とすると、吸水率が
小さく、吸水による膨張、収縮率も一層小さくなるの
で、より好ましいものとなる。The hydraulic binder 5 is, for example, cement,
Lime, gypsum and the like are the most desirable, because cement is strong in strength, excellent in water resistance, and relatively inexpensive. As this cement, for example, blast furnace cement, silica cement, fly ash cement and the like can be used in addition to Portland cement such as ordinary Portland cement and early-strength Portland cement, and these may be used depending on the application. When the water binder ratio of the hydraulic binder 5 is within 30% as much as possible, the water absorption rate is small, and the expansion and contraction rates due to water absorption are further reduced, which is more preferable.

【００２７】上記のような合成樹脂発泡体４、水硬性結
合材５、及び水、あるいは必要に応じて繊維、砂、各種
の混和材等を例えばミキサー等で混練し、パン型造粒機
等の造粒機を用いて所定形状に成形し、硬化させて断熱
性粒状体３を製造するが、その全体比重が０．８以上、
好ましくは０．９〜１．２の範囲のものが、合成樹脂発
泡体４による断熱性を維持しつつ強度も高いものとなる
のでより望ましい。The above-mentioned synthetic resin foam 4, hydraulic binder 5, water or, if necessary, fiber, sand, various admixtures and the like are kneaded by, for example, a mixer or the like. Is molded into a predetermined shape by using a granulator, and is cured to produce the heat-insulating granular material 3, the specific gravity of which is 0.8 or more,
Preferably, a range of 0.9 to 1.2 is more preferable because the strength is high while the heat insulating property of the synthetic resin foam 4 is maintained.

【００２８】次に、断熱性粒状体３の性能試験結果につ
いて、表１乃至表３に基づいて説明する。Next, the results of the performance test of the heat-insulating granular material 3 will be described with reference to Tables 1 to 3.

【００２９】[0029]

【表１】 [Table 1]

【００３０】表１に示すように、配合比が異なる例１〜
例５の５つのサンプルを用意した。これらは全て体積が
１ｍ3 となるように、水硬性結合材５としての普通ポル
トランドセメント、水、及び合成樹脂発泡ビーズ（合成
樹脂発泡体）４を混合したものである。合成樹脂発泡ビ
ーズは、ポリスチレンを発泡させてなるもので、平均径
０．７ｍｍ、真比重０．１のものを使用した。このよう
な条件で混合したものを、平均径が１０ｍｍとなるよう
に球状に形成して固化した。このようにして作製した例
３につき、こうした材料に必要である圧縮強さの指標と
なるC.B.R （支持力比）の測定結果（ＪＩＳ Ａ１２１
１による）が良好であることを表２に示す。また、例１
〜例５の性能試験結果を表３に示す。As shown in Table 1, Examples 1 to 3 differing in the compounding ratio
Five samples of Example 5 were prepared. All of them are obtained by mixing ordinary Portland cement as a hydraulic binder 5, water, and synthetic resin foam beads (synthetic resin foam) 4 so as to have a volume of 1 m 3 . The synthetic resin foam beads were obtained by foaming polystyrene, and had an average diameter of 0.7 mm and a true specific gravity of 0.1. The mixture mixed under such conditions was formed into a sphere so as to have an average diameter of 10 mm and solidified. With respect to Example 3 thus manufactured, the measurement result of CBR (bearing force ratio) as an index of the compressive strength required for such a material (JIS A121)
1) is shown in Table 2. Example 1
Table 3 shows the performance test results of Example 5 to Example 5.

【００３１】[0031]

【表２】 [Table 2]

【００３２】[0032]

【表３】 〔試験方法〕 (1) 熱伝導率は、JIS A 1420による。 (2) C.B.R は、JIS A 1211による。 (3) 圧縮強度は、JIS R 5201による。試験体寸法：40
×40×160mm (4) 吸水率は、JIS A 1135による。 (5) 凍結融解抵抗性は、ASTM C 666Ａ法（水中）によ
る。試験体寸法：100×100×400mm 上記(3)、(5)については、断熱性粒状体と同配合のコン
クリート成形品を作製して試験を行った。[Table 3] [Test method] (1) The thermal conductivity is based on JIS A1420. (2) CBR is based on JIS A 1211. (3) Compressive strength is based on JIS R 5201. Specimen size: 40
× 40 × 160mm (4) Water absorption is based on JIS A 1135. (5) Freeze-thaw resistance is based on the ASTM C 666A method (in water). Specimen dimensions: 100 × 100 × 400 mm For the above (3) and (5), concrete molded articles having the same composition as the heat-insulating granules were prepared and tested.

【００３３】表２及び表３から明らかなように、断熱性
粒状体３は、熱伝導率が小さく、断熱性に優れているの
で、地盤又は路床２の凍結を有効に防止することができ
る。また、C.B.R や圧縮強度が高いので、大荷重にも耐
えることができる。更に、吸水率が小さいと共に、凍結
融解抵抗性が大きく、吸水や凍結による膨張率が小さい
ので、氷点下の温度になってその内部に含まれる水分が
凍結した場合であっても、その体積膨張によってこの断
熱性粒状体３自体が破壊されることもなく、そのため耐
久性があるという利点がある。As is clear from Tables 2 and 3, the heat-insulating granular material 3 has a small thermal conductivity and is excellent in heat insulation, so that the ground or the subgrade 2 can be effectively prevented from freezing. . In addition, since CBR and compressive strength are high, it can withstand heavy loads. Furthermore, since the water absorption rate is low, the freeze-thaw resistance is high, and the expansion rate due to water absorption and freezing is low, so even when the temperature contained below the freezing point and the water contained therein freezes, the volume expansion causes There is an advantage that the heat-insulating granular material 3 itself is not broken and therefore has durability.

【００３４】また、断熱性粒状体３をこの実施形態のよ
うな道路等の舗装１の凍上防止に用いた場合には、この
断熱性粒状体３層の厚さＢ１を従来の砂等の凍上抑制材
層の厚さより小さくできるので、掘削深さＡ１を従来よ
りも小さくでき、そのため残土も少なくなるという利点
がある。When the heat-insulating granular material 3 is used for preventing the frost heave of the pavement 1 such as a road as in this embodiment, the thickness B1 of the heat-insulating granular material 3 is determined by the conventional frost heaving of sand or the like. Since the thickness can be made smaller than the thickness of the suppressing material layer, the excavation depth A1 can be made smaller than before, and there is an advantage that the residual soil is also reduced.

【００３５】なお、前記舗装１としては、アスファルト
舗装やコンクリート舗装の他、インターロッキング・ブ
ロック・タイル等の舗装が挙げられる。また、この舗装
１は、図示しない路盤、基層、及び表層等を含むもので
あり、その用途により適宜の層が形成される。尚、断熱
性粒状体を路盤の一部として使用してもさしつかえな
い。更に、道路に使用する場合に限定されず、歩道、駐
車場、広場、テニスコート、建物周辺の私道、路地、空
港の滑走路等、種々の用途に使用することができる。The pavement 1 includes asphalt pavement and concrete pavement, as well as pavements such as interlocking block tiles. The pavement 1 includes a roadbed, a base layer, a surface layer, and the like (not shown), and an appropriate layer is formed according to its use. Note that the heat-insulating granular material may be used as a part of the roadbed. Further, the present invention is not limited to use on roads, and can be used for various purposes such as sidewalks, parking lots, open spaces, tennis courts, private roads around buildings, alleyways, airport runways, and the like.

【００３６】第２実施形態に係る構造物の凍上防止工法
は、図３に示すように、第１実施形態において、前記路
床２と断熱性粒状体３の間に、例えば凍上抑制材として
の砂６を介在させるものである。As shown in FIG. 3, the method for preventing frost heave of a structure according to the second embodiment is, as shown in FIG. Sand 6 is interposed.

【００３７】前記凍上抑制材としては、砂６の他、砂利
等が挙げられる。Examples of the frost heave suppressing material include sand 6 and gravel.

【００３８】この実施形態と第１実施形態において、北
海道の士別、旭川、釧路の３ヵ所における凍上抑制材の
掘削深さＡ１を試算した結果を、従来工法（置換工法）
の結果と共に表４に示す。In this embodiment and the first embodiment, the results of trial calculation of the excavation depth A1 of the frost heave suppressing material at three locations in Shibetsu, Asahikawa, and Kushiro in Hokkaido are shown by the conventional method (replacement method).
The results are shown in Table 4 below.

【００３９】[0039]

【表４】 〔計算条件〕 (1) 凍結計算は、Aldrich の修正Berggren式を用い
た。 (2) 凍結指数と凍結期間は、(社)日本道路協会のアス
ファルト舗装要綱による。 (3) 舗装はアスファルト層12cm、路盤20cmと仮定し、
置換率70％で凍上抑制材寸法を求めた。 (4) 断熱性粒状体の熱伝導率は、0.15kcal/mh℃(0.000
42cal/cm・sec・℃) を用いた。[Table 4] [Calculation conditions] (1) For the freezing calculation, the modified Berggren equation of Aldrich was used. (2) The freezing index and freezing period are based on the Asphalt Pavement Guidelines of the Japan Road Association. (3) Assuming that the pavement is asphalt layer 12cm and roadbed 20cm,
The frost heave suppression material dimensions were determined at a replacement rate of 70%. (4) The thermal conductivity of the heat insulating granular material is 0.15 kcal / mh ° C (0.000 kcal / mh
42 cal / cm · sec · ° C).

【００４０】表４から明らかなように、断熱性粒状体３
を用いると、掘削深さＡ１は約２／３程度に低減でき
る。また、断熱性粒状体３のみを使用する場合と比較し
て掘削深さＡ２がより多く必要となるが、砂６等の凍上
抑制材は安価であるので、結果的に全体のコストを軽減
できる。As is clear from Table 4, the heat insulating granular material 3
By using, the excavation depth A1 can be reduced to about 2/3. Further, as compared with the case where only the heat-insulating granular material 3 is used, a larger excavation depth A2 is required, but since the frost heave suppressing material such as the sand 6 is inexpensive, the overall cost can be reduced as a result. .

【００４１】第３実施形態に係る構造物の凍上防止工法
は、図４に示すように、前記構造物として鉄道の道床バ
ラスト１１を敷設する場合に使用される。即ち、所定深
さで掘削した地盤２上に、断熱性粒状体３を地面２ａの
高さまで敷いてから、その上方に鉄道の道床バラスト１
１を敷設するものである。The method for preventing frost heave of a structure according to the third embodiment is used, as shown in FIG. 4, when laying a ballast 11 on a railway as the structure. That is, the heat-insulating granular material 3 is laid on the ground 2 excavated at a predetermined depth up to the height of the ground 2a, and then the railway ballast 1
1 is laid.

【００４２】前記道床バラスト１１には、従来と同様、
枕木１２が埋設され、この枕木１２にはレール１３が取
付けられる。The ballast 11 has the same structure as in the prior art.
A sleeper 12 is embedded and a rail 13 is attached to the sleeper 12.

【００４３】このように、前記道床バラスト１１の下方
に断熱性粒状体３を敷くだけでよいので、作業工程が少
なくなる。また、機械作業で全てできるので、工期が短
くなり、そのためコストダウンを図ることができるとい
う利点がある。As described above, it is only necessary to lay the heat-insulating granular material 3 below the ballast 11 and the number of working steps is reduced. In addition, since all operations can be performed by mechanical work, there is an advantage that the construction period is shortened, and thus the cost can be reduced.

【００４４】なお、図５に示すように、前記地盤２と断
熱性粒状体３の間に砂６等の凍上抑制材を介在させるこ
ともできるが、この場合、断熱性粒状体３層の厚さを図
４に示す断熱性粒状体３層の厚さと同じとし、地盤２を
より深く掘削して砂６等の凍上抑制材を介在させてもよ
いし、あるいは第２実施形態と同様に断熱性粒状体３層
の厚さを小さくしてコストダウンを図ってもよい。As shown in FIG. 5, a freeze-up suppressing material such as sand 6 may be interposed between the ground 2 and the heat-insulating granular material 3, but in this case, the thickness of the heat-insulating granular material 3 layer is increased. The thickness may be the same as the thickness of the three layers of heat-insulating granular material shown in FIG. 4, and the ground 2 may be excavated deeper to interpose a frost heave suppressing material such as sand 6, or may be heat-insulated as in the second embodiment. The cost may be reduced by reducing the thickness of the three layers of the granular material.

【００４５】第４実施形態に係る構造物の凍上防止工法
は、図６に示すように、前記構造物として建物の床又は
土間２１を敷設する場合に使用される。即ち、地盤２上
に、断熱性粒状体３を所定厚さで敷いてから、例えばコ
ンクリート等を打設等して建物の床又は土間２１を敷設
するものである。The method for preventing frost heave of a structure according to the fourth embodiment is used when laying a floor of a building or a slab 21 as the structure as shown in FIG. That is, the heat-insulating granular material 3 is laid on the ground 2 with a predetermined thickness, and then, for example, concrete or the like is laid to lay the building floor or soil 21.

【００４６】前記建物としては、住宅、倉庫、工場、冷
凍倉庫、冷蔵倉庫等が挙げられる。また、前記床又は土
間２１の材質としては、コンクリートの他、アスファル
ト混合物、樹脂モルタル、モルタル等が挙げられる。Examples of the building include a house, a warehouse, a factory, a freezing warehouse, a refrigerated warehouse, and the like. Examples of the material of the floor or the slab 21 include concrete, asphalt mixture, resin mortar, mortar, and the like.

【００４７】このように、床又は土間２１の下方に前記
断熱性粒状体３を敷設するだけでよいので、工程が少な
くなる。また、機械作業で全てできるので、施工時間を
短縮することができる。更に、断熱性粒状体３は複数の
合成樹脂発泡体４を水硬性結合材５で固めたものである
ので、大荷重をかけても破損のおそれがない。加えて、
コンクリートを打設等する場合には、余剰水が下方の断
熱性粒状体３の方に抜けるので、床押さえ時間を短縮す
ることができる。更にまた、断熱性粒状体３が一様に敷
かれているので、断熱欠損が少ないという利点もある。As described above, it is only necessary to lay the heat-insulating granular material 3 below the floor or the slab 21, so that the number of steps is reduced. In addition, since all operations can be performed by mechanical work, the construction time can be reduced. Furthermore, since the heat insulating granular material 3 is obtained by solidifying a plurality of synthetic resin foams 4 with the hydraulic binder 5, there is no possibility of breakage even when a large load is applied. in addition,
In the case of casting concrete or the like, surplus water escapes to the lower heat-insulating granular material 3, so that the floor holding time can be reduced. Furthermore, since the heat insulating granules 3 are uniformly spread, there is an advantage that heat insulation defects are small.

【００４８】第５実施形態に係る構造物の凍上防止工法
は、図７に示すように、第４実施形態において、前記地
盤２と断熱性粒状体３の間に防湿フィルム２２を介在さ
せるものである。As shown in FIG. 7, the method for preventing frost heave of a structure according to the fifth embodiment differs from the fourth embodiment in that a moisture-proof film 22 is interposed between the ground 2 and the heat-insulating granular material 3. is there.

【００４９】このように、地盤２と断熱性粒状体３の間
に防湿フィルム２２を介在させておけば、建物内の防湿
効果を向上させることができるという利点がある。Thus, if the moisture-proof film 22 is interposed between the ground 2 and the heat-insulating granular material 3, there is an advantage that the moisture-proof effect in the building can be improved.

【００５０】第６実施形態に係る構造物の凍上防止工法
は、図８に示すように、前記構造物として建物等の基礎
３１又はベースを敷設する場合に使用される。即ち、所
定深さで掘削した地盤２上に、断熱性粒状体３を所定厚
さで敷いてから、その上方に必要に応じて捨てコンクリ
ート３２等を介在させて基礎３１又はベースを敷設する
ものである。The structure frost heave prevention method according to the sixth embodiment is used when a foundation 31 or a base such as a building is laid as the structure as shown in FIG. That is, the heat insulating granular material 3 is laid at a predetermined thickness on the ground 2 excavated at a predetermined depth, and then the foundation 31 or the base is laid above the ground by interposing a discarded concrete 32 or the like as necessary. It is.

【００５１】前記基礎３１としては、布基礎、ベタ基
礎、地中梁、タンク（ＬＰＧ，ＬＮＧ等）基礎等が挙げ
られる。Examples of the foundation 31 include a cloth foundation, a solid foundation, an underground beam, and a tank (LPG, LNG, etc.) foundation.

【００５２】前記ベースとしては、Ｕ字溝、排水溝、道
路の縁石等のベースが挙げられる。Examples of the base include a base such as a U-shaped ditch, a drain ditch, and a curb of a road.

【００５３】このように、基礎３１等の下方に断熱性粒
状体３を敷設するので、従来よりも掘削深さＡ３を小さ
くできると共に、基礎３１等の高さも低くすることがで
きる。そのため、効果的にコストダウンを図ることがで
きるという利点がある。As described above, since the heat-insulating granular material 3 is laid below the foundation 31 and the like, the excavation depth A3 can be made smaller than before, and the height of the foundation 31 and the like can be reduced. Therefore, there is an advantage that cost can be effectively reduced.

【００５４】第７実施形態に係る構造物の凍上防止工法
は、図９に示すように、第６実施形態において、前記基
礎３１又はベースを敷設した後、砂６等の凍上抑制材で
埋め戻すものである。As shown in FIG. 9, in the method for preventing frost heave of a structure according to the seventh embodiment, as shown in FIG. 9, after laying the base 31 or the base in the sixth embodiment, it is back-filled with a frost heave suppressing material such as sand 6. Things.

【００５５】このように、埋め戻し材として砂６等の凍
上抑制材を用いれば、基礎３１等の周辺を凍上抑制材で
包囲でき、そのため凍上防止効果をより高めることがで
きるという利点がある。尚、砂６等の上方又は内部に
は、図示しない防水シートや排水パイプ等を設けること
もできる。As described above, when the frost heave suppressing material such as the sand 6 is used as the backfill material, the periphery of the foundation 31 and the like can be surrounded by the frost heave suppressing material, and therefore, there is an advantage that the frost heave prevention effect can be further enhanced. A waterproof sheet or a drain pipe (not shown) may be provided above or inside the sand 6 or the like.

【００５６】以上、断熱性粒状体３を用いるこの発明の
凍上防止工法は、上記第１乃至第７実施形態で挙げた構
造物に限定されるものではなく、必要に応じて種々の構
造物に使用できる。As described above, the frost heave prevention method of the present invention using the heat insulating granular material 3 is not limited to the structures described in the first to seventh embodiments, but may be applied to various structures as necessary. Can be used.

【００５７】[0057]

【発明の効果】以上のように、請求項１の発明によれ
ば、断熱性粒状体の熱伝導率が小さく、断熱性に優れて
いるので、地盤又は路床の凍結を有効に防止することが
できる。また、C.B.R や圧縮強度が高いので、大荷重に
も耐えることができる。更に、吸水率が小さいと共に、
凍結融解抵抗性が大きく、吸水や凍結による膨張率が小
さいので、氷点下の温度になってその内部に含まれる水
分が凍結した場合であっても、その体積膨張によってこ
の断熱性粒状体自体が破壊されることもなく、そのため
耐久性があるという利点がある。As described above, according to the first aspect of the present invention, the thermal conductivity of the heat insulating granular material is small and the heat insulating property is excellent, so that the freezing of the ground or the roadbed can be effectively prevented. Can be. In addition, since CBR and compressive strength are high, it can withstand heavy loads. Furthermore, while the water absorption is small,
Because of its high freeze-thaw resistance and low coefficient of expansion due to water absorption and freezing, even if the water contained inside freezes due to a temperature below freezing, the volumetric expansion will destroy the heat-insulating granular material itself. This has the advantage of being durable.

【００５８】請求項２の発明によれば、前記構造物が道
路等の舗装であり、断熱性粒状体層の厚さを従来の砂等
の凍上抑制材層の厚さより小さくできるので、掘削深さ
を従来よりも小さくでき、そのため残土も少なくなると
いう利点がある。従って、材料コスト及び施工コストを
合わせたトータルコストを安くすることができる。According to the second aspect of the present invention, the structure is a pavement such as a road, and the thickness of the heat insulating granular material layer can be made smaller than the thickness of the conventional frost heave suppressing material layer such as sand. There is an advantage that the soil can be made smaller than before, so that the remaining soil is also reduced. Therefore, the total cost including the material cost and the construction cost can be reduced.

【００５９】請求項３の発明によれば、前記構造物が鉄
道の道床バラストであり、この道床バラストの下方に断
熱性粒状体を敷くだけでよいので、作業工程が少なくな
る。また、機械作業で全てできるので、工期が短くな
り、そのためコストダウンを図ることができるという利
点がある。According to the third aspect of the present invention, since the structure is a ballast of a railway, and only the heat-insulating granules need to be laid below the ballast of the railway, the number of working steps is reduced. In addition, since all operations can be performed by mechanical work, there is an advantage that the construction period is shortened, and thus the cost can be reduced.

【００６０】請求項４の発明によれば、前記地盤又は路
床と断熱性粒状体の間に砂等の凍結抑制材を介在させる
ので、断熱性粒状体のみを使用する場合と比較して掘削
深さがより多く必要となるが、砂等の凍上抑制材は安価
であるので、結果的に全体のコストを軽減できるという
利点がある。According to the fourth aspect of the present invention, since an antifreeze material such as sand is interposed between the ground or the subgrade and the heat insulating granular material, the excavation is performed in comparison with the case where only the heat insulating material is used. Although a greater depth is required, since the frost heave suppressing material such as sand is inexpensive, there is an advantage that the overall cost can be reduced as a result.

【００６１】請求項５の発明によれば、前記構造物が建
物の床又は土間であり、この床又は土間の下方に断熱性
粒状体を敷設するだけでよいので、工程が少なくなる。
また、機械作業で全てできるので、施工時間を短縮する
ことができる。更に、断熱性粒状体は複数の合成樹脂発
泡体を水硬性結合材で固めたものであるので、大荷重を
かけても破損のおそれがない。加えて、コンクリートを
打設等する場合には、余剰水が断熱性粒状体の方に抜け
るので、床押さえ時間を短縮することができる。更にま
た、断熱性粒状体が一様に敷かれているので、断熱欠損
が少ないという利点もある。According to the fifth aspect of the present invention, since the structure is a floor or a floor of a building, and only the heat insulating granules need to be laid below the floor or the floor, the number of steps is reduced.
In addition, since all operations can be performed by mechanical work, the construction time can be reduced. Furthermore, since the heat insulating granular material is obtained by solidifying a plurality of synthetic resin foams with a hydraulic binder, there is no possibility of breakage even when a large load is applied. In addition, when casting concrete or the like, surplus water escapes toward the heat-insulating granular material, so that the floor holding time can be reduced. Furthermore, since the heat insulating particles are uniformly spread, there is an advantage that heat insulation defects are small.

【００６２】請求項６の発明によれば、前記地盤と断熱
性粒状体の間に例えばポリスチレンフィルム等の防湿フ
ィルムを介在させるので、建物内の防湿効果を向上させ
ることができる。しかも、地盤に含まれる水分が断熱性
粒状体に吸水されるのを防止できるので、断熱性粒状体
の耐久性もより向上させることができるという利点があ
る。According to the invention of claim 6, since a moisture-proof film such as a polystyrene film is interposed between the ground and the heat-insulating granular material, the moisture-proof effect in the building can be improved. In addition, since the water contained in the ground can be prevented from being absorbed by the heat-insulating granular material, there is an advantage that the durability of the heat-insulating granular material can be further improved.

【００６３】請求項７の発明によれば、前記構造物が建
物等の基礎又はベースであり、基礎等の下方に断熱性粒
状体を敷設するので、従来よりも掘削深さを小さくでき
ると共に、基礎等の高さも低くすることができる。その
ため、効果的にコストダウンを図ることができるという
利点がある。According to the invention of claim 7, the structure is a foundation or a base of a building or the like, and the heat insulating granular material is laid below the foundation or the like. The height of the foundation and the like can be reduced. Therefore, there is an advantage that cost can be effectively reduced.

【００６４】請求項８の発明によれば、前記基礎又はベ
ースを敷設した後、砂等の凍結抑制材で埋め戻すので、
基礎等の周辺を凍上抑制材で包囲でき、そのため凍上防
止効果をより高めることができるという利点がある。According to the eighth aspect of the present invention, after the foundation or the base is laid, it is backfilled with a freezing inhibitor such as sand.
There is an advantage that the periphery of the foundation or the like can be surrounded by the frost heave suppressing material, and the frost heave prevention effect can be further enhanced.

【図面の簡単な説明】[Brief description of the drawings]

【図１】第１実施形態に係る構造物の凍上防止工法で行
った道路の舗装周辺の断面説明図。FIG. 1 is an explanatory cross-sectional view of a periphery of a road pavement performed by a method for preventing frost heave of a structure according to a first embodiment.

【図２】断熱性粒状体の断面説明図。FIG. 2 is an explanatory sectional view of a heat-insulating granular material.

【図３】第２実施形態に係る構造物の凍上防止工法で行
った道路の舗装周辺の断面説明図。FIG. 3 is an explanatory cross-sectional view of a periphery of a pavement of a road, which is formed by a frost heave prevention method for a structure according to a second embodiment.

【図４】第３実施形態に係る構造物の凍上防止工法で行
った鉄道の道床バラスト周辺の断面説明図。FIG. 4 is an explanatory cross-sectional view showing the vicinity of a ballast ballast of a railway, which is performed by a method for preventing frost heave of a structure according to a third embodiment.

【図５】図４の断熱性粒状体の下方に砂を敷いた状態を
示す断面説明図。FIG. 5 is an explanatory sectional view showing a state in which sand is laid below the heat-insulating granular material of FIG. 4;

【図６】第４実施形態に係る構造物の凍上防止工法で行
った建物の床又は土間周辺の断面説明図。FIG. 6 is an explanatory cross-sectional view of a building floor or around a slab, obtained by a frost heave prevention method for a structure according to a fourth embodiment.

【図７】第５実施形態に係る構造物の凍上防止工法で行
った建物の床又は土間周辺の断面説明図。FIG. 7 is an explanatory cross-sectional view of a building floor or around a slab, which is obtained by a frost heave prevention method for a structure according to a fifth embodiment.

【図８】第６実施形態に係る構造物の凍上防止工法で行
った建物の基礎周辺の断面説明図。FIG. 8 is an explanatory cross-sectional view of the vicinity of a foundation of a building performed by a frost heave prevention method for a structure according to a sixth embodiment.

【図９】第７実施形態に係る構造物の凍上防止工法で行
った建物の基礎周辺の断面説明図。FIG. 9 is an explanatory cross-sectional view of the vicinity of a foundation of a building performed by a frost heave prevention method for a structure according to a seventh embodiment.

【図１０】従来工法（置換工法）で行った道路の舗装周
辺の断面説明図。FIG. 10 is an explanatory cross-sectional view of the periphery of a pavement of a road performed by a conventional method (replacement method).

【図１１】従来工法（断熱工法）で行った鉄道の道床バ
ラスト周辺の断面説明図。FIG. 11 is an explanatory cross-sectional view of the periphery of a ballast ballast of a railway performed by a conventional method (insulation method).

【図１２】従来工法で行った建物の床又は土間周辺の断
面説明図。FIG. 12 is a cross-sectional explanatory view of a building floor or around a sill, which is performed by a conventional method.

【図１３】従来工法で行った建物の基礎周辺の断面説明
図。FIG. 13 is an explanatory cross-sectional view of the vicinity of a foundation of a building performed by a conventional method.

【符号の説明】 １ 道路等の舗装（構造物） ２ 地盤又は路床 ３ 断熱性粒状体 ４ 合成樹脂発泡体 ５ 水硬性結合材 ６ 砂（凍上抑制材） １１ 鉄道の道床バラスト（構造物） ２１ 建物の床又は土間（構造物） ２２ 防湿フィルム ３１ 基礎（又はベース）（構造物）[Description of Signs] 1 Pavement such as road (structure) 2 Ground or subgrade 3 Insulating granular material 4 Synthetic resin foam 5 Hydraulic binding material 6 Sand (freeze-up suppressing material) 11 Railroad ballast (structure) 21 Building floor or dirt (structure) 22 Moisture-proof film 31 Foundation (or base) (structure)

Claims (8)

【特許請求の範囲】[Claims] 【請求項１】 地盤又は路床上に、複数の合成樹脂発泡
体を水硬性結合材で固めて一体とした断熱性粒状体を敷
いてから、その上方に構造物を敷設することを特徴とす
る構造物の凍上防止工法。1. A heat-insulating granular body obtained by solidifying a plurality of synthetic resin foams with a hydraulic binder on a ground or a roadbed, and then laying a structure thereabove. Freezing prevention method for structures. 【請求項２】 前記構造物が道路等の舗装であることを
特徴とする請求項１記載の構造物の凍上防止工法。2. The method according to claim 1, wherein the structure is pavement such as a road. 【請求項３】 前記構造物が鉄道の道床バラストである
ことを特徴とする請求項１記載の構造物の凍上防止工
法。3. The method according to claim 1, wherein the structure is a ballast of a railway bed. 【請求項４】 前記地盤又は路床と断熱性粒状体の間に
砂等の凍上抑制材を介在させることを特徴とする請求項
２又は３記載の構造物の凍上防止工法。4. The method for preventing frost heave of a structure according to claim 2, wherein a frost heave suppression material such as sand is interposed between the ground or the roadbed and the heat-insulating granular material. 【請求項５】 前記構造物が建物の床又は土間であるこ
とを特徴とする請求項１記載の構造物の凍上防止工法。5. The method according to claim 1, wherein the structure is a floor or a soil of a building. 【請求項６】 前記地盤と断熱性粒状体の間に防湿フィ
ルムを介在させることを特徴とする請求項５記載の構造
物の凍上防止工法。6. The method according to claim 5, wherein a moisture-proof film is interposed between the ground and the heat-insulating granular material. 【請求項７】 前記構造物が建物等の基礎又はベースで
あることを特徴とする請求項１記載の構造物の凍上防止
工法。7. The method according to claim 1, wherein the structure is a foundation or a base of a building or the like. 【請求項８】 前記基礎又はベースを敷設した後、砂等
の凍上抑制材で埋め戻すことを特徴とする請求項７記載
の構造物の凍上防止工法。8. The method for preventing frost heave of a structure according to claim 7, wherein after laying the foundation or the base, it is backfilled with a frost heave suppression material such as sand.
JP8278448A 1996-10-21 1996-10-21 Preventing construction method for frost heaving of structure Pending JPH10121403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8278448A JPH10121403A (en) 1996-10-21 1996-10-21 Preventing construction method for frost heaving of structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8278448A JPH10121403A (en) 1996-10-21 1996-10-21 Preventing construction method for frost heaving of structure

Publications (1)

Publication Number Publication Date
JPH10121403A true JPH10121403A (en) 1998-05-12

Family

ID=17597486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8278448A Pending JPH10121403A (en) 1996-10-21 1996-10-21 Preventing construction method for frost heaving of structure

Country Status (1)

Country Link
JP (1) JPH10121403A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006188905A (en) * 2005-01-07 2006-07-20 Hokkaido Univ Construction material, method of manufacturing construction material, construction method, railroad ballast, construction method of railroad ballast, soil base course for labor-saving track, construction method of soil base course for labor-saving track, ground of structure, and construction method of ground of structure
JP2007023653A (en) * 2005-07-19 2007-02-01 Dow Kakoh Kk Freezing preventive structure
JP2014074289A (en) * 2012-10-04 2014-04-24 Sumikin System Buildings Corp Embedded form for rc simplified underground wall construction for frost heave measures and construction method of rc simplified underground wall for frost heave measures
CN104594149A (en) * 2014-12-03 2015-05-06 中国科学院青海盐湖研究所 Frozen soil layer road structure and construction method thereof
CN105911083A (en) * 2016-05-10 2016-08-31 东南大学 Cement grade gravel frozen-heave performance detection method for high-speed railway bed
JP2018084040A (en) * 2016-11-21 2018-05-31 鹿島建設株式会社 Ground improvement method and ground structure
CN110359481A (en) * 2019-07-26 2019-10-22 东北大学 A kind of insulating layer and the swollen system of the integrated heat-preserving anti-freezing of heating tube and implementation method
CN110820457A (en) * 2019-10-25 2020-02-21 东南大学 Abandonment tennis composite heat preservation suitable for pollute place horizontal separation system
CN111254771A (en) * 2020-03-25 2020-06-09 中铁二院工程集团有限责任公司 Plateau wet area railway embankment structure and construction method thereof
CN113404514A (en) * 2021-06-15 2021-09-17 广州地铁设计研究院股份有限公司 Tunnel waterproof structure and construction method thereof
CN114703907A (en) * 2021-11-19 2022-07-05 中国科学院西北生态环境资源研究院 Pile column operation period frozen-uplift disease renovation structure and renovation method thereof

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006188905A (en) * 2005-01-07 2006-07-20 Hokkaido Univ Construction material, method of manufacturing construction material, construction method, railroad ballast, construction method of railroad ballast, soil base course for labor-saving track, construction method of soil base course for labor-saving track, ground of structure, and construction method of ground of structure
JP2007023653A (en) * 2005-07-19 2007-02-01 Dow Kakoh Kk Freezing preventive structure
JP4685534B2 (en) * 2005-07-19 2011-05-18 ダウ化工株式会社 Anti-freezing structure
JP2014074289A (en) * 2012-10-04 2014-04-24 Sumikin System Buildings Corp Embedded form for rc simplified underground wall construction for frost heave measures and construction method of rc simplified underground wall for frost heave measures
CN104594149A (en) * 2014-12-03 2015-05-06 中国科学院青海盐湖研究所 Frozen soil layer road structure and construction method thereof
CN105911083A (en) * 2016-05-10 2016-08-31 东南大学 Cement grade gravel frozen-heave performance detection method for high-speed railway bed
JP2018084040A (en) * 2016-11-21 2018-05-31 鹿島建設株式会社 Ground improvement method and ground structure
CN110359481A (en) * 2019-07-26 2019-10-22 东北大学 A kind of insulating layer and the swollen system of the integrated heat-preserving anti-freezing of heating tube and implementation method
CN110820457A (en) * 2019-10-25 2020-02-21 东南大学 Abandonment tennis composite heat preservation suitable for pollute place horizontal separation system
CN110820457B (en) * 2019-10-25 2021-07-02 东南大学 Abandonment tennis composite heat preservation suitable for pollute place horizontal separation system
CN111254771A (en) * 2020-03-25 2020-06-09 中铁二院工程集团有限责任公司 Plateau wet area railway embankment structure and construction method thereof
CN111254771B (en) * 2020-03-25 2024-05-03 中铁二院工程集团有限责任公司 Railway embankment structure in plateau wet area and construction method thereof
CN113404514A (en) * 2021-06-15 2021-09-17 广州地铁设计研究院股份有限公司 Tunnel waterproof structure and construction method thereof
CN113404514B (en) * 2021-06-15 2023-11-21 广州地铁设计研究院股份有限公司 Tunnel waterproof structure and construction method thereof
CN114703907A (en) * 2021-11-19 2022-07-05 中国科学院西北生态环境资源研究院 Pile column operation period frozen-uplift disease renovation structure and renovation method thereof
CN114703907B (en) * 2021-11-19 2023-11-03 中国科学院西北生态环境资源研究院 Pile column operation period freeze-pulling disease remediation structure and remediation method thereof

Similar Documents

Publication Publication Date Title
WO1997013923A1 (en) Method for constructing block paving
KR100975671B1 (en) The methods to manufacture an highly durable, environmentally friendly permeability concrete composite utilizing low carbon blended cement, performance weathered granite soil, water friendly chopped fiber, pigment, inorganic water solution and reinforcing mesh, and permeability pavement using it
KR20130008149A (en) The piling method of earth for road pavement
US3732791A (en) Pavement and railroad bed construction with light concrete sub-layer
KR101219616B1 (en) Lightweight foamed concrete composition having antiwashout property underwater
JPH10121403A (en) Preventing construction method for frost heaving of structure
Aoki Development of pervious concrete
KR20100000958A (en) Frost protect material and method for paving road using the same
Emersleben et al. The use of recycled glass for the construction of pavements
CN110792011A (en) Construction process suitable for high-cold collapsible loess area permeable pavement
JP3050793B2 (en) Pavement material and pavement block using the same
JP2909929B2 (en) How to build a block pavement
JP2015158119A (en) Mixing of material and construction method for water-permeable, water-retaining and weed-proof pavement containing shirasu balloon
KR100698487B1 (en) Construction work method of road pavement
JP7191445B2 (en) interlocking block paving
Aslantaş A study on abrasion resistance of concrete paving blocks
Grubeša et al. Properties and applicability of pervious concrete for paving flags
Sharp Concrete in Highway Engineering: International Series of Monographs in Civil Engineering
RU94248U1 (en) BUILDING BLOCK
Hossain et al. Roller compacted concrete pavement in Virginia
JP2004251110A (en) Water retentive pavement structure
JP2007205010A (en) Mixture and construction method for soil-based pavement, and mixture and construction method for soil-based wall
CN221142521U (en) Cover plate culvert base cushion layer structure
JPH0610305A (en) Method and composition for pavement
US6375736B1 (en) Structure cellular grout