JPH10325136A - Construction method for improving soft ground - Google Patents
Construction method for improving soft groundInfo
- Publication number
- JPH10325136A JPH10325136A JP13694497A JP13694497A JPH10325136A JP H10325136 A JPH10325136 A JP H10325136A JP 13694497 A JP13694497 A JP 13694497A JP 13694497 A JP13694497 A JP 13694497A JP H10325136 A JPH10325136 A JP H10325136A
- Authority
- JP
- Japan
- Prior art keywords
- water
- ground
- air
- soft ground
- improving
- 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
Links
- 238000010276 construction Methods 0.000 title abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000000463 material Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 35
- 238000005266 casting Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、軟弱地盤上面に負
圧状態を造り出すことによって地盤中の水と空気とを吸
い出すようにした地盤表面の改良工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for improving the surface of a ground in which water and air in the ground are sucked out by creating a negative pressure state on the soft ground.
【０００２】[0002]
【従来の技術】従来、軟弱地盤上面に負圧状態を造り出
すことによって地盤中の水と空気とをその圧力差によっ
て吸い出すようにした地盤表面の改良工法としては、図
７及び図８に示すように、ドレーン材１１を上端部１１
ａを残して地盤Ａ中に所定の間隔をおいて打設すること
により地盤中に鉛直排水壁を造成する工程と、前記ドレ
ーン材１１上端部と接触するように水平状に真空ポンプ
Ｐに排水タンク１２を介して連結した通水材１３を配置
する工程と、地盤Ａ上を前記ドレーン材上端部１１ａ及
び通水材１３とともに気密シート１４で覆う工程と、前
記真空ポンプＰを作動させて地盤Ａ上面に負圧状態を造
り出す工程とからなるものがあった。2. Description of the Related Art Conventionally, as a method of improving the ground surface by creating a negative pressure state on the upper surface of a soft ground so that water and air in the ground are sucked out by the pressure difference, as shown in FIGS. And the drain material 11 at the upper end 11
a step of forming a vertical drainage wall in the ground by casting at predetermined intervals into the ground A while leaving a, and draining the vacuum pump P horizontally so as to contact the upper end of the drain material 11. Arranging the water-permeable material 13 connected via the tank 12; covering the ground A with the air-tight sheet 14 together with the drain material upper end 11a and the water-permeable material 13; A step of creating a negative pressure state on the upper surface of A.
【０００３】そして、地盤Ａ中の水と空気は、地盤Ａ上
面に造り出された負圧力によって、ドレーン材１１から
なる地盤Ａ中の鉛直排水壁と、ドレーン材上端部１１ａ
と接触するように水平状に配された通水材１３とを通っ
て吸い出されるようになっていた。[0003] The water and air in the ground A are caused to flow by the negative pressure created on the upper surface of the ground A by the vertical drain wall in the ground A made of the drain material 11 and the upper end 11a of the drain material.
Then, the water is sucked out through the water-permeable material 13 which is arranged horizontally so as to come into contact with the water.
【０００４】[0004]
【発明が解決しようとする課題】ところが、従来の改良
工法においては、図９に示すように、地盤Ａ中の水と空
気の吸い出しが進んで前記排水経路（図面は通水材１３
の一部を示した）を流れる水量が少なくなると、空気は
吸っても水の吸い出しは行われなくなり、地盤Ａ中の水
と空気を確実に排水除去できないという不具合があっ
た。However, in the conventional improved construction method, as shown in FIG. 9, the water and air in the ground A are sucked out and the drainage path (the drawing shows the water-permeable material 13).
However, when the amount of water flowing through the ground A is reduced, water is not sucked out even if air is sucked, and the water and air in the ground A cannot be reliably drained and removed.
【０００５】本発明は、このような技術的課題に鑑みな
されたものであり、地盤中の水と空気を最後まで確実に
排水除去することができる軟弱地盤の改良工法を提供す
ることを目的とするものである。The present invention has been made in view of such technical problems, and an object of the present invention is to provide an improved method of soft ground capable of reliably draining and removing water and air in the ground to the last. Is what you do.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、請求項１記載の発明は、軟弱地盤上面を気密シート
で覆って負圧状態とすることによって地盤中の水と空気
とを吸い出すようにした軟弱地盤表面の改良工法におい
て、前記軟弱地盤上面を負圧状態とするための手段と前
記軟弱地盤との間の前記水と空気とを吸い出す経路に、
前記地盤中の水と空気の吸い出し方向に水及び空気を押
し出す手段を設けて、前記地盤中の水と空気とを吸い出
すと共に水と空気の吸い出し方向に水及び空気を押し出
すようにしたことを特徴とする軟弱地盤の改良工法をそ
の要旨とした。In order to achieve the above object, the invention according to the first aspect is intended to suck water and air from the ground by covering the upper surface of the soft ground with an airtight sheet to make a negative pressure state. In the method for improving the soft ground surface, the path for sucking the water and air between the soft ground and the means for bringing the upper surface of the soft ground into a negative pressure state,
A means for extruding water and air in the direction of sucking water and air in the ground is provided, so that water and air in the ground are sucked out and water and air are extruded in the direction of sucking water and air. The outline of the method is to improve soft ground.
【０００７】請求項２記載の発明は、軟弱地盤上面を気
密シートで覆って負圧状態とすることによって地盤中の
水と空気とを吸い出すようにした軟弱地盤表面の改良工
法が、ドレーン材を上端部を残して地盤中に所定の間隔
をおいて打設することにより地盤中に鉛直排水壁を造成
する工程と、前記ドレーン材上端部と接触するように水
平状に真空ポンプに連結した通水材を配置する工程と、
地盤上を前記ドレーン材上端部及び通水材とともに気密
シートで覆う工程と、前記真空ポンプを作動させて地盤
上面に負圧状態を造り出す工程とからなることを特徴と
する軟弱地盤の改良工法をその要旨とした。According to a second aspect of the present invention, there is provided a method for improving the surface of a soft ground in which the upper surface of the soft ground is covered with an airtight sheet to make a negative pressure state so that water and air in the ground are sucked out. A step of forming a vertical drain wall in the ground by pouring at a predetermined interval into the ground while leaving the upper end thereof, and a step of horizontally connecting to a vacuum pump so as to contact the upper end of the drain material. Arranging the water material;
An improved method of soft ground characterized by comprising a step of covering the ground with an airtight sheet together with the drain material upper end and the water-permeable material, and a step of operating the vacuum pump to create a negative pressure state on the ground upper surface. It is the gist.
【０００８】請求項３記載の発明は、地盤中の水と空気
の吸い出し方向に水及び空気を押し出す手段を通水材に
設けたことを特徴とする軟弱地盤の改良工法をその要旨
とした。The gist of the invention according to claim 3 is a method of improving soft ground, characterized in that means for extruding water and air in the suction direction of water and air in the ground are provided in the water-permeable material.
【０００９】請求項４記載の発明は、地盤中の水と空気
の吸い出し方向に水及び空気を押し出す手段がジェット
ポンプであることを特徴とする軟弱地盤の改良工法をそ
の要旨とした。The gist of the invention of claim 4 is a method of improving soft ground, characterized in that the means for pushing out water and air in the suction direction of water and air in the ground is a jet pump.
【００１０】請求項５記載の発明は、地盤中の水と空気
の吸い出し方向に水及び空気を押し出す手段がブロアで
あることを特徴とする軟弱地盤の改良工法をその要旨と
した。[0010] The gist of the invention according to claim 5 is a method of improving soft ground, characterized in that the means for pushing out water and air in the direction of sucking water and air from the ground is a blower.
【００１１】[0011]
【発明の実施の形態】まず、本発明を適用する、軟弱地
盤上面を気密シートで覆って負圧状態とすることによっ
て地盤中の水と空気とを吸い出すようにした軟弱地盤の
改良工法について説明する。このような改良工法として
は、種々のものが考えられるが、図１及び図２に示すも
のを好ましい例として挙げることができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a description will be given of an improved method of soft ground, in which water and air in the ground are sucked out by covering the upper surface of the soft ground with an airtight sheet and applying a negative pressure to the soft ground to which the present invention is applied. I do. Various methods can be considered as such an improvement method, and the method shown in FIGS. 1 and 2 can be mentioned as a preferable example.
【００１２】すなわちその工法は、ペーパードレーン材
などのドレーン材１１を上端部１１ａを残して地盤Ａ中
に所定の間隔をおいて打設することで鉛直排水壁を造成
する。次いで、この地盤Ａ上面に突出するドレーン材１
１の上端部１１ａに接触するように、一端側に排水タン
ク１２を介して真空ポンプＰが連結された通水材１３を
平行状に配置する。この後、この地盤Ａ上を前記ドレー
ン材１１の上端部１１ａ並びに通水材１３とともに気密
シート１４で覆い、この状態で前記真空ポンプＰを作動
させて地盤Ａ上面に負圧の状態を造り出すというもので
ある。That is, in this method, a vertical drain wall is formed by driving a drain material 11 such as a paper drain material into the ground A at a predetermined interval while leaving the upper end portion 11a. Next, the drain material 1 protruding above the ground A
A water-permeable material 13 to which a vacuum pump P is connected via a drainage tank 12 at one end side is arranged in parallel so as to contact the upper end portion 11a. Thereafter, the ground A is covered with an airtight sheet 14 together with the upper end portion 11a of the drain material 11 and the water-permeable material 13, and in this state, the vacuum pump P is operated to create a negative pressure state on the upper surface of the ground A. Things.
【００１３】その他の工法としては、例えば図５に示す
ように、軟弱地盤Ａ上面に真空ポンプＰに連結した通水
材１３を配し、この通水材１３を気密シート１４で覆っ
て真空引きすることで、地盤Ａ中の水と空気とを吸い出
すようにした工法、図６に示すように、軟弱地盤Ａ中に
所定の間隔に砂層よりなる砂柱１５を設け、この軟弱地
盤Ａ上面に真空ポンプに連結した通水材１３を配し、こ
の通水材１３を気密シート１４で覆って真空引きするこ
とで、地盤Ａ中の水と空気とを吸い出すようにした工法
などを挙げることができる。As another construction method, as shown in FIG. 5, for example, a water-permeable material 13 connected to a vacuum pump P is disposed on the soft ground A, and the water-permeable material 13 is covered with an airtight sheet 14 to evacuate. By doing so, a construction method in which water and air in the ground A are sucked out, as shown in FIG. 6, sand columns 15 made of a sand layer are provided at predetermined intervals in the soft ground A, and on the soft ground A upper surface A method of arranging a water-permeable material 13 connected to a vacuum pump, covering the water-permeable material 13 with an airtight sheet 14 and evacuating the water to suck out water and air in the ground A may be mentioned. it can.
【００１４】上記軟弱地盤表面の改良工法において、軟
弱地盤上面を負圧状態とするための手段（図１、図２、
図５及び図６に示す態様では真空ポンプＰ）と前記軟弱
地盤Ａとの間の水と空気とを吸い出す経路に、前記地盤
中の水と空気の吸い出し方向に水及び空気を押し出す手
段とを設けるのである。In the above-mentioned method for improving the soft ground surface, means for bringing the upper surface of the soft ground into a negative pressure state (FIGS. 1, 2 and 3).
In the embodiments shown in FIGS. 5 and 6, a means for pushing out water and air in a suction direction of water and air in the ground is provided on a path for sucking water and air between the vacuum pump P) and the soft ground A. It is provided.
【００１５】水及び空気を押し出す手段としては特に限
定されないが、設置の容易さ、取り扱いが簡単といった
点から、好ましくはジェットポンプＰ−２やブロアなど
を挙げることができる。この押し出し手段を、水と空気
とを吸い出す経路に設けるのである。水と空気とを吸い
出す経路としては、例えば図１及び図２に示す態様で
は、地盤Ａ、ドレーン材１１及び通水材１３である。図
５に示す態様では地盤Ａ及び通水材１３、図６に示す態
様では、地盤Ａ、砂柱１５及び通水材１３である。The means for extruding water and air is not particularly limited, but preferably includes a jet pump P-2 and a blower in terms of easy installation and easy handling. This pushing means is provided in a path for sucking water and air. As a path for sucking water and air, for example, in the embodiments shown in FIGS. 1 and 2, the ground A, the drain member 11, and the water passage member 13 are provided. In the embodiment shown in FIG. 5, the ground A and the water-permeable material 13 are provided, and in the embodiment shown in FIG.
【００１６】上記各改良工法における水及び空気の吸い
出し経路の中でも、最も設置しやすく、かつより効率的
な水及び空気の押し出しができるのは、通水材１３であ
る。各図面に示す態様ではいずれも通水材１３に押し出
し手段（例えばジェットポンプＰ−２）を設けている。Of the water and air suction paths in each of the above-mentioned improved construction methods, the water passage material 13 is the most easily installed and can more efficiently extrude water and air. In each of the embodiments shown in the drawings, a pushing means (for example, a jet pump P-2) is provided on the water-permeable material 13.
【００１７】このように、水及び空気の吸い出し経路
に、水及び空気の押し出し手段を設けることにより、前
記地盤Ａ中の水と空気は、負圧にする手段（例えば真空
ポンプＰ）によって吸い出されると共に、押し出し手段
（例えばジェットポンプＰ２）によって、水と空気の吸
い出し方向に押し出されるようになる。As described above, by providing the water and air pushing means in the water and air sucking path, the water and air in the ground A are sucked out by the means for reducing the pressure (for example, the vacuum pump P). At the same time, the water is pushed out in the water and air suction direction by the pushing means (for example, the jet pump P2).
【００１８】押し出し手段（例えばジェットポンプＰ−
２）によって、水と空気の吸い出し方向に押し出される
と、水及び空気の吸い出し経路（例えば通水材１３）に
おいて、地盤中の空気と水は、当初図３に示すように水
は、波を打った状態に流れるようになる。しばらく押し
出しが繰り返されることにより、水は図４に示すように
経路（通水材１３）内全体を流れるようになる。Extrusion means (for example, jet pump P-
According to 2), when the water and the air are pushed out in the sucking direction, in the water and air sucking path (for example, the water passage material 13), the air and the water in the ground first, as shown in FIG. It starts to flow in the struck state. By repeating the extrusion for a while, the water flows through the entire path (water-permeable material 13) as shown in FIG.
【００１９】このため、地盤Ａ中の水と空気の吸い出し
が進んで経路（通水材１３）を流れる水量が少なくなっ
たとしても、地盤Ａ中の水と空気は確実に排水除去され
るようになる。Therefore, even if the water and the air in the ground A are sucked out and the amount of water flowing through the path (the water passage material 13) is reduced, the water and the air in the ground A are surely drained and removed. become.
【００２０】[0020]
【発明の効果】本発明の軟弱地盤の改良工法にあって
は、水及び空気の吸い出し経路に、水及び空気の押し出
し手段を設けて、地盤中の水と空気とを吸い出すと共に
水と空気の吸い出し方向に水及び空気を押し出すように
したことから、地盤中の水と空気の吸い出しが進んで前
記排水経路を流れる水量が少なくなっても、地盤中の水
と空気は確実に排水除去される。According to the method for improving soft ground of the present invention, a water and air extruding means is provided in a water and air sucking path so that water and air in the ground can be sucked out and water and air can be extracted. Since water and air are pushed out in the suction direction, even if the suction of water and air in the ground progresses and the amount of water flowing through the drainage path decreases, the water and air in the ground are reliably drained and removed. .
【００２１】このため、例えば従来工法の場合、１回の
改良工事で処理できる面積が３０００ｍ2 であったのに
対し、本発明の改良工法によれば、１００００ｍ2 と大
幅に改良面積を増大させることができ、作業効率を高
め、工事期間を短縮し、かつ工事に要する経費を大幅に
削減することができる。勿論、本発明の改良工法によれ
ば、面積だけではなく、従来と同じ吸い出し力を用いた
場合でも、軟弱地盤のより深い部分まで改良がなされる
ことになる。For this reason, for example, in the case of the conventional construction method, the area which can be treated by one improvement work is 3000 m 2 , whereas according to the improvement method of the present invention, the improvement area is greatly increased to 10000 m 2 . Thus, the work efficiency can be improved, the construction period can be shortened, and the cost required for the construction can be greatly reduced. Needless to say, according to the improved construction method of the present invention, not only the area but also the deeper portion of the soft ground can be improved even when the same suction force is used as before.
【図１】本発明の軟弱地盤の改良工法による地盤中の水
及び空気の吸出構造を模式的に示した断面図。FIG. 1 is a cross-sectional view schematically showing a structure for sucking water and air from the ground by an improved method of soft ground according to the present invention.
【図２】同じく平面図。FIG. 2 is a plan view of the same.
【図３】ジェットポンプによって押し出した当初の通水
管内を流れる空気と水を示した模式図。FIG. 3 is a schematic diagram showing air and water flowing through an initial water pipe extruded by a jet pump.
【図４】ジェットポンプによって押し出しを繰り返した
後の通水管内を流れる空気と水を示した模式図。FIG. 4 is a schematic view showing air and water flowing in a water pipe after repeated extrusion by a jet pump.
【図５】本発明の軟弱地盤の改良工法による地盤中の水
及び空気の吸出構造の別の例を模式的に示した断面図。FIG. 5 is a cross-sectional view schematically showing another example of a structure for sucking water and air from the ground by the method for improving soft ground according to the present invention.
【図６】本発明の軟弱地盤の改良工法による地盤中の水
及び空気の吸出構造のさらに別の例を模式的に示した断
面図。FIG. 6 is a cross-sectional view schematically showing still another example of a structure for sucking water and air from the ground by the soft ground improvement method of the present invention.
【図７】従来の軟弱地盤の改良工法による地盤中の水及
び空気の吸出構造を模式的に示した断面図。FIG. 7 is a cross-sectional view schematically showing a structure for sucking water and air from the ground by a conventional soft ground improvement method.
【図８】同じく平面図。FIG. 8 is a plan view of the same.
【図９】従来の軟弱地盤の改良工法による通水管内を流
れる水及び空気を示した模式図。FIG. 9 is a schematic view showing water and air flowing in a water pipe according to a conventional soft ground improvement method.
１１ ・・・ドレーン材 １２ ・・・排水タンク １３ ・・・通水材 １４ ・・・気密シート Ｐ ・・・真空ポンプ Ｐ−２・・・ジェットポンプ Ａ ・・・軟弱地盤 DESCRIPTION OF SYMBOLS 11 ... Drain material 12 ... Drainage tank 13 ... Water-permeable material 14 ... Airtight sheet P ... Vacuum pump P-2 ... Jet pump A ... Soft ground
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【手続補正書】[Procedure amendment]
【提出日】平成９年５月２８日[Submission date] May 28, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図３[Correction target item name] Figure 3
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図３】 FIG. 3
【手続補正２】[Procedure amendment 2]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図４[Correction target item name] Fig. 4
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図４】 FIG. 4
Claims (5)
状態とすることによって地盤中の水と空気とを吸い出す
ようにした軟弱地盤表面の改良工法において、 前記軟弱地盤上面を負圧状態とするための手段と前記軟
弱地盤との間の前記水と空気とを吸い出す経路に、前記
地盤中の水と空気の吸い出し方向に水及び空気を押し出
す手段を設けて、前記地盤中の水と空気とを吸い出すと
共に水と空気の吸い出し方向に水及び空気を押し出すよ
うにしたことを特徴とする軟弱地盤の改良工法。1. A method for improving the surface of a soft ground in which the upper surface of the soft ground is covered with an airtight sheet to create a negative pressure state so that water and air in the ground are sucked out. A means for extruding the water and air in the path for sucking the water and air between the soft ground and the soft ground. Characterized by the fact that water and air are extruded in the direction of water and air suction.
状態とすることによって地盤中の水と空気とを吸い出す
ようにした軟弱地盤表面の改良工法が、ドレーン材を上
端部を残して地盤中に所定の間隔をおいて打設すること
により地盤中に鉛直排水壁を造成する工程と、前記ドレ
ーン材上端部と接触するように水平状に真空ポンプに連
結した通水材を配置する工程と、地盤上を前記ドレーン
材上端部及び通水材とともに気密シートで覆う工程と、
前記真空ポンプを作動させて地盤上面に負圧状態を造り
出す工程とからなることを特徴とする請求項１記載の軟
弱地盤の改良工法。2. A method of improving the surface of a soft ground in which the upper surface of the soft ground is sucked by covering the upper surface of the soft ground with a hermetic sheet to create a negative pressure state so that water and air in the ground are sucked out. A step of forming a vertical drainage wall in the ground by casting at predetermined intervals in the ground, and a step of arranging a water-permeable material connected to a vacuum pump horizontally so as to be in contact with the upper end of the drain material. And covering the ground with an airtight sheet together with the drain material upper end and the water-permeable material,
2. The method of improving soft ground according to claim 1, further comprising the step of operating the vacuum pump to create a negative pressure state on the ground surface.
水及び空気を押し出す手段を通水材に設けたことを特徴
とする請求項２記載の軟弱地盤の改良工法。3. The method for improving soft ground according to claim 2, wherein a means for pushing water and air in the direction of sucking water and air from the ground is provided on the water-permeable material.
水及び空気を押し出す手段がジェットポンプであること
を特徴とする請求項１または３のいずれかに記載の軟弱
地盤の改良工法。4. The method for improving soft ground according to claim 1, wherein the means for pushing water and air in the direction of sucking water and air from the ground is a jet pump.
水及び空気を押し出す手段がブロアであることを特徴と
する請求項１または３のいずれかに記載の軟弱地盤の改
良工法。5. The method of improving soft ground according to claim 1, wherein the means for pushing out water and air in the direction of sucking water and air in the ground is a blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13694497A JPH10325136A (en) | 1997-05-27 | 1997-05-27 | Construction method for improving soft ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13694497A JPH10325136A (en) | 1997-05-27 | 1997-05-27 | Construction method for improving soft ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10325136A true JPH10325136A (en) | 1998-12-08 |
Family
ID=15187183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13694497A Pending JPH10325136A (en) | 1997-05-27 | 1997-05-27 | Construction method for improving soft ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10325136A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004040068A1 (en) * | 2002-10-31 | 2004-05-13 | Maruyama Kougyo Kabushikikaisha | Method and device for improving poor ground |
| CN101806057A (en) * | 2010-04-28 | 2010-08-18 | 河海大学 | Immediate processing method for hydraulic filling ultra-soft foundation by modified vacuum preloading and water-covering preloading |
| CN103061230A (en) * | 2013-01-18 | 2013-04-24 | 湖南城市学院 | Construction method of technology utilizing ground source heat pump to cool and melt frozen road surfaces and drain boards for construction |
| US8729430B2 (en) | 2010-03-25 | 2014-05-20 | Iee International Electronics & Engineering S.A. | Seat heater and capacitive occupancy sensor combination |
| US9000331B2 (en) | 2011-09-21 | 2015-04-07 | Iee International Electronics & Engineering S.A. | Capacitive sensing system able of using heating element as antenna electrode |
| US9006618B2 (en) | 2010-03-25 | 2015-04-14 | Iee International Electronics & Engineering S.A. | Combined seat heater and capacitive occupancy sensor |
| US9132850B2 (en) | 2011-09-21 | 2015-09-15 | Iee International Electronics & Engineering S.A. | Capacitive sensing system configured for using heating element as antenna electrode |
-
1997
- 1997-05-27 JP JP13694497A patent/JPH10325136A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004040068A1 (en) * | 2002-10-31 | 2004-05-13 | Maruyama Kougyo Kabushikikaisha | Method and device for improving poor ground |
| US7198430B2 (en) | 2002-10-31 | 2007-04-03 | Maruyama Kougyo Kabushikikaisha | Reformation of soft soil and system therefor |
| US8729430B2 (en) | 2010-03-25 | 2014-05-20 | Iee International Electronics & Engineering S.A. | Seat heater and capacitive occupancy sensor combination |
| US9006618B2 (en) | 2010-03-25 | 2015-04-14 | Iee International Electronics & Engineering S.A. | Combined seat heater and capacitive occupancy sensor |
| CN101806057A (en) * | 2010-04-28 | 2010-08-18 | 河海大学 | Immediate processing method for hydraulic filling ultra-soft foundation by modified vacuum preloading and water-covering preloading |
| US9000331B2 (en) | 2011-09-21 | 2015-04-07 | Iee International Electronics & Engineering S.A. | Capacitive sensing system able of using heating element as antenna electrode |
| US9132850B2 (en) | 2011-09-21 | 2015-09-15 | Iee International Electronics & Engineering S.A. | Capacitive sensing system configured for using heating element as antenna electrode |
| CN103061230A (en) * | 2013-01-18 | 2013-04-24 | 湖南城市学院 | Construction method of technology utilizing ground source heat pump to cool and melt frozen road surfaces and drain boards for construction |
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