JP4107429B2 - Embankment structure with vertical compressive force applied by tendon and its construction method - Google Patents

Embankment structure with vertical compressive force applied by tendon and its construction method Download PDF

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JP4107429B2
JP4107429B2 JP2003358916A JP2003358916A JP4107429B2 JP 4107429 B2 JP4107429 B2 JP 4107429B2 JP 2003358916 A JP2003358916 A JP 2003358916A JP 2003358916 A JP2003358916 A JP 2003358916A JP 4107429 B2 JP4107429 B2 JP 4107429B2
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vertical
embankment
loading plate
horizontal loading
insulator
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太郎 内村
文夫 龍岡
勝 舘山
健治 渡辺
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Railway Technical Research Institute
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Description

本発明は、鉄道線路となる長大桁のようなより大きな荷重を支持できる、緊張材により鉛直圧縮力を加えた盛土構造物及びその構築方法に関するものである。   The present invention relates to an embankment structure that can support a larger load such as a large girder that becomes a railway track, and to which a vertical compressive force is applied by a tension material, and a construction method thereof.

従来、盛土によって、長大桁のような、より大きな荷重を支持できる方法として、以下に開示されるようなものがあった。   Conventionally, there has been a method disclosed below as a method capable of supporting a larger load such as a long girder by embankment.

図７はかかる従来のＰＬ／ＰＳ（プレローディド・プレストレス）補強土工法の説明図であり、かかる工法は下記特許文献１に開示されている。   FIG. 7 is an explanatory diagram of such a conventional PL / PS (preloaded prestressed) reinforced earth construction method, which is disclosed in Patent Document 1 below.

この図において、１０１は地盤、１０２はその地盤１０１に配置される下部水平載荷板、１０３は補強盛土体、１０４は水平引張補強材、１０５は上部水平載荷板、１０６は鉛直緊張材、１０７はその鉛直緊張材１０６の固定治具（例えば、締付ナット）である。   In this figure, 101 is the ground, 102 is the lower horizontal loading plate disposed on the ground 101, 103 is the reinforcing embankment, 104 is the horizontal tensile reinforcing material, 105 is the upper horizontal loading plate, 106 is the vertical tension material, 107 is This is a fixing jig (for example, a tightening nut) for the vertical tension member 106.

この図に示すように、かかる工法では、鉛直緊張材１０６によって、補強盛土体１０３に事前に荷重履歴（プレロード）を加え、荷重を半分程度除荷してプレストレス状態で鉛直緊張材１０６を固定することによって、補強盛土体１０３の載荷耐力、圧縮剛性が著しく改善される。特に、補強盛土体１０３を粒度調整砕石などのレキ材でよく締め固めて造った場合には、格段の効果が得られ、５０ｍ以上の橋桁の支持であっても適用可能となる。この形式の橋脚は鉄道工事で１箇所採用され、４年間の仮設橋脚として、列車荷重を十分に支持した実績がある。
特許第２８９５４０１号公報 As shown in this figure, in this construction method, the vertical tension member 106 applies a load history (preload) to the reinforced embankment 103 in advance, and unloads about half of the load to fix the vertical tension member 106 in a prestressed state. By doing so, the load bearing capacity and compression rigidity of the reinforced embankment 103 are remarkably improved. In particular, when the reinforced embankment 103 is made by compacting with a repellent material such as a particle size-adjusted crushed stone, a remarkable effect is obtained, and even a support of a bridge girder of 50 m or more can be applied. This type of pier was adopted at one place in railway construction, and has a track record of fully supporting train loads as a temporary pier for 4 years.
Japanese Patent No. 28895401

しかしながら、上記した従来のＰＬ／ＰＳ補強土工法は、鉛直緊張材１０６によるプレストレスが、微小ではあるが補強盛土体１０３のクリープ変形、および鉛直緊張材１０６自身の経年変化によってリラクゼーション（応力緩和）するため、長期にわたって使用する場合には、定期的に鉛直緊張材１０６を締め付け直すか、もしくは鉛直緊張材１０６と小橋台の定着部に、変形に追随できるようなバネなどを配置する必要がある。このため保守の手間が増加し、もしくは定着部の構成が複雑となり、コストが上昇するなどの問題が指摘されてきた。したがって、恒久構造物に対して採用された事例はない。   However, the conventional PL / PS reinforced earth method described above is relaxed (stress relaxation) due to creep deformation of the reinforced embankment 103 and aging of the vertical tension material 106 itself, although the prestress by the vertical tension material 106 is minute. Therefore, when used for a long period of time, it is necessary to periodically retighten the vertical tension member 106 or to arrange a spring or the like that can follow the deformation between the vertical tension member 106 and the anchoring portion of the small abutment. . For this reason, it has been pointed out that problems such as an increase in maintenance labor or a complicated configuration of the fixing unit and an increase in cost. Therefore, there are no cases adopted for permanent structures.

また、補強盛土体１０３にかけることができるプレストレス荷重の大きさは、鉛直緊張材１０６の引張強度により制限を受けることになるといった問題があった。   Further, the magnitude of the prestress load that can be applied to the reinforced embankment 103 is limited by the tensile strength of the vertical tendon 106.

本発明は、上記状況に鑑みて、保守の手間を省き、定着部の構成を簡素化し、コストを低減することができる緊張材により鉛直圧縮力を加えた盛土構造物及びその構築方法を提供することを目的とする。   In view of the above situation, the present invention provides an embankment structure in which a vertical compression force is applied by a tension material that can save maintenance, simplify the structure of a fixing unit, and reduce costs, and a method for constructing the same. For the purpose.

本発明は、上記目的を達成するために、
〔１〕緊張材により鉛直圧縮力を加えた盛土構造物において、下部水平載荷板と、この下部水平載荷板の上に構築される補強盛土体と、この補強盛土体の上に配置される上部水平載荷板と、この上部水平載荷板上に配置される支点を有する部材と、前記下部水平載荷板に下端部を接続する鉛直緊張材と、前記支点を有する部材に設けられる梃子となる部材と、前記梃子となる部材の一端部に前記鉛直緊張材を固定する固定治具と、前記梃子となる部材の他端部に作用する重力を利用して前記鉛直緊張材に張力を作用させる荷重を付加する荷重付加手段とを具備し、この荷重付加手段による荷重の付加により、前記補強盛土体のクリープ変形や前記鉛直緊張材自身の経年変化にかかわらず、前記補強盛土体に常に一定のプレストレスを維持することを特徴とする。 In order to achieve the above object, the present invention provides
[1] In an embankment structure in which a vertical compressive force is applied by a tension material, a lower horizontal loading plate, a reinforcing embankment constructed on the lower horizontal loading plate, and an upper portion disposed on the reinforcing embankment member made horizontal loading plate, a member having a fulcrum which is arranged in the upper horizontal loading board, a vertical tension member connecting the lower end to the lower horizontal loading plate, a lever provided in section material having the fulcrum When a fixture for fixing the vertical tendons at one end of the member serving as the lever, by utilizing the gravity acting on the other end portion of the member serving as the lever Ru reacted with tension to the vertical tendons ; and a load adding means for adding a load by the addition of a load by the load application means, irrespective of the aging of creep deformation and the vertical tension material itself of the reinforcing embankment body, always constant the reinforcement embankment body maintain a pre-stress And wherein the door.

〔２〕上記〔１〕記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部に固定された重錘であることを特徴とする。   [2] In the embankment structure in which the vertical compressive force is applied by the tendon described in [1], the load applying means is a weight fixed to the other end of the member serving as the insulator. .

〔３〕上記〔１〕記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部の上面に固定された重錘であることを特徴とする。   [3] In the embankment structure in which a vertical compressive force is applied by the tendon described in [1] above, the load applying means is a weight fixed to the upper surface of the other end of the member serving as the insulator. And

〔４〕上記〔１〕記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部の上面、側面及び下面に固定された重錘であることを特徴とする。   [4] In the embankment structure in which a vertical compression force is applied by the tendon described in [1] above, the load applying means is a weight fixed to the upper surface, the side surface, and the lower surface of the other end portion of the member serving as the insulator. It is characterized by being.

〔５〕上記〔１〕記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部に吊下げ部材により吊り下げられた重錘であることを特徴とする。   [5] In the embankment structure in which a vertical compressive force is applied by the tendon described in [1] above, the load applying means is a weight suspended by a suspension member at the other end of the member that serves as the insulator. It is characterized by that.

〔６〕上記〔１〕記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部に押し下げ力を付与する構造物であることを特徴とする。   [6] In the embankment structure in which a vertical compressive force is applied by the tendon described in [1] above, the load applying means is a structure that applies a pressing force to the other end of the member serving as the insulator. And

〔７〕緊張材により鉛直圧縮力を加えた構造物の構築方法において、補強盛土体の下部に下部水平載荷板を配置し、前記補強盛土体の上に上部水平載荷板を配置し、前記上部水平載荷板上に梃子の支点となる部材を設置し、梃子となる部材を前記支点の上に設置し、前記下部水平載荷板に鉛直緊張材の下端部を接続し、前記梃子となる部材の一端が前記鉛直緊張材の上端を押し上げるように組み立て、前記梃子となる部材の他方の端部に重錘を固定し、前記梃子となる部材の他方の端部に作用する重力を利用して前記鉛直緊張材に張力を作用させることにより、前記補強盛土体のクリープ変形や前記鉛直緊張材自身の経年変化にかかわらず、前記補強盛土体に常に一定のプレストレスを維持することができる荷重を付加することを特徴とする。 [7] In the construction method of the structure in which the vertical compressive force is applied by the tension material , a lower horizontal loading plate is disposed at a lower portion of the reinforcing embankment, an upper horizontal loading plate is disposed on the reinforcing embankment, and the upper portion A member serving as a fulcrum of the lever is installed on the horizontal loading plate, a member serving as a lever is installed on the fulcrum, a lower end portion of a vertical tension member is connected to the lower horizontal loading plate, and the member serving as the lever is assembled as one pushes up the upper end of the vertical tendon, the lever and the other end to the weight of the member is fixed comprising, by utilizing the gravity acting on the other end of the member serving as the lever the by applying a tension in a vertical tendon, regardless aging of creep deformation and the vertical tension material itself of the reinforcing embankments body always adds a load capable of maintaining a constant prestress the reinforcing embankment body characterized in that it

〔８〕緊張材により鉛直圧縮力を加えた構造物の構築方法において、補強盛土体の下部に下部水平載荷板を配置し、前記補強盛土体の上に上部水平載荷板を配置し、前記上部水平載荷板上に梃子の支点となる部材を設置し、梃子となる部材を前記支点の上に設置し、前記下部水平載荷板に鉛直緊張材の下端部を接続し、前記梃子となる部材の一端が前記鉛直緊張材の上端を押し上げるように組み立て、前記梃子となる部材の他方の端部に重錘を吊下げ部材によって吊り下げ、前記梃子となる部材の他方の端部に作用する重力を利用して前記鉛直緊張材に張力を作用させることにより、前記補強盛土体のクリープ変形や前記鉛直緊張材自身の経年変化にかかわらず、前記補強盛土体に常に一定のプレストレスを維持することができる荷重を付加することを特徴とする。 [8] In the construction method of the structure in which the vertical compressive force is applied by the tension material , a lower horizontal loading plate is arranged at a lower portion of the reinforcing embankment, an upper horizontal loading plate is arranged on the reinforcing embankment, and the upper portion A member serving as a fulcrum of the lever is installed on the horizontal loading plate, a member serving as a lever is installed on the fulcrum, a lower end portion of a vertical tension member is connected to the lower horizontal loading plate, and the member serving as the lever is Assembled so that one end pushes up the upper end of the vertical tension material, a weight is suspended by a suspension member on the other end of the member that becomes the lever, and gravity acting on the other end of the member that becomes the lever by applying a tension to the vertical tendon using, regardless aging of creep deformation and the vertical tension material itself of the reinforcing embankment body, it is to always maintain a constant prestress the reinforcing embankment body Add possible load Characterized in that that.

本発明の緊張材により鉛直圧縮力を加えた盛土構造物及びその構築方法によれば、保守の手間を省き、定着部の構成を簡素化し、コストを低減することができる。   According to the embankment structure in which the vertical compressive force is applied by the tendon of the present invention and the construction method thereof, it is possible to save the labor of maintenance, simplify the configuration of the fixing unit, and reduce the cost.

以下、本発明の実施の形態について詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail.

図１は本発明の第１実施例を示す緊張材により鉛直圧縮力を加えた盛土構造物の模式図である。   FIG. 1 is a schematic view of an embankment structure in which a vertical compression force is applied by a tendon material according to a first embodiment of the present invention.

この図において、１は地盤、２はその地盤１に配置される下部水平載荷板、３は補強盛土体、４は水平引張補強材、５は上部水平載荷板、６は上部水平載荷板５に配置される支点７を有する部材、８は梃子となる部材、９は鉛直緊張材、１０は梃子８の一端部に鉛直緊張材９を固定する固定治具、１１は梃子となる部材８の他端部の上面に固定され、鉛直緊張材９に絶えず鉛直圧縮力を加える重錘である。なお、この重錘１１は梃子となる部材８に強力な接着剤によって恒久的に堅牢に固着され、重錘１１が梃子となる部材８から離脱することがないようにする。   In this figure, 1 is the ground, 2 is the lower horizontal loading plate disposed on the ground 1, 3 is the reinforcing embankment, 4 is the horizontal tensile reinforcement, 5 is the upper horizontal loading plate, and 6 is the upper horizontal loading plate 5. A member having a fulcrum 7 to be arranged, 8 is a member to be a lever, 9 is a vertical tension member, 10 is a fixing jig for fixing the vertical tension member 9 to one end of the lever 8, and 11 is a member 8 to be a lever. It is a weight that is fixed to the upper surface of the end and constantly applies a vertical compressive force to the vertical tension material 9. The weight 11 is permanently firmly fixed to the member 8 serving as a lever by a strong adhesive so that the weight 11 is not detached from the member 8 serving as a lever.

以下、本発明の第１実施例を示す緊張材により鉛直圧縮力を加えた盛土構造物の作用について、図２を参照しながら説明する。   Hereinafter, the operation of the embankment structure in which the vertical compression force is applied by the tension material according to the first embodiment of the present invention will be described with reference to FIG.

本発明の実施例では、重力を利用して鉛直緊張材９に張力を作用させることにより、補強盛土体３のクリープ変形や鉛直緊張材９自身の経年変化にかかわらず、常に一定のプレストレスを維持することができる。さらに、梃子８の比率の調整により、補強盛土体３に加わるプレストレス荷重は鉛直緊張材９の張力の定数倍とすることができ、鉛直緊張材９の引張強度以上のプレストレスを加えることができる。すなわち、図２において、鉛直緊張材９の張力Ｔと重錘１１（あるいは上載荷重）の重さＷの間には、それぞれの支点７からの距離をａ，ｂとしたときに、ａ・Ｔ＝ｂ・Ｗの関係があり、補強盛土体３にかかるプレストレス荷重Ｐは、Ｐ＝Ｗ＋Ｔ＝（１＋ａ／ｂ）Ｔ＝（１＋ｂ／ａ）Ｗとなり、鉛直緊張材９の張力Ｔよりも、また重錘１１（あるいは上載荷重）の重さＷよりも大きなプレストレス荷重Ｐを恒常的にかけることができる。   In the embodiment of the present invention, by applying tension to the vertical tension member 9 using gravity, a constant prestress is always applied regardless of the creep deformation of the reinforced embankment 3 or the secular change of the vertical tension member 9 itself. Can be maintained. Furthermore, by adjusting the ratio of the insulator 8, the prestress load applied to the reinforced embankment 3 can be a constant multiple of the tension of the vertical tension member 9, and a prestress greater than the tensile strength of the vertical tension member 9 can be applied. it can. That is, in FIG. 2, between the tension T of the vertical tension material 9 and the weight W of the weight 11 (or the overload), when the distances from the respective fulcrums 7 are a and b, a · T = B · W, and the prestress load P applied to the reinforced embankment 3 is P = W + T = (1 + a / b) T = (1 + b / a) W, which is greater than the tension T of the vertical tendon 9 Further, a prestress load P larger than the weight W of the weight 11 (or the upper load) can be constantly applied.

以下、かかる緊張材により鉛直圧縮力を加えた盛土構造物の構築方法について説明する。
（１）まず、補強盛土体３の上部水平載荷板５上に、梃子の支点７を有する部材６を設置し、
（２）梃子となる部材８を支点７の上に設置し、
（３）梃子となる部材８の一端が鉛直緊張材９の上端を押し上げるように組み立て、
（４）梃子となる部材８の他方の端部に重錘１１を固定し、
（５）補強盛土体３に鉛直圧縮力をかけられるようにした構造物を構築する。 Hereinafter, the construction method of the embankment structure which applied the vertical compressive force with this tendon is demonstrated.
(1) First, the member 6 having the fulcrum 7 of the insulator is installed on the upper horizontal loading plate 5 of the reinforced embankment 3.
(2) The member 8 to be a lever is installed on the fulcrum 7,
(3) Assembling so that one end of the member 8 serving as an insulator pushes up the upper end of the vertical tension member 9,
(4) The weight 11 is fixed to the other end portion of the member 8 serving as an insulator,
(5) A structure is constructed so that a vertical compressive force can be applied to the reinforced embankment 3.

図３は本発明の第２実施例を示す緊張材により鉛直圧縮力を加えた盛土構造物の要部模式図である。ここでは、補強盛土体の下部の部分は省略している。   FIG. 3 is a schematic diagram of a main part of an embankment structure in which a vertical compressive force is applied by a tendon showing a second embodiment of the present invention. Here, the lower part of the reinforcing embankment is omitted.

上記第１実施例の図１及び図２においては、重錘１１を梃子となる部材８の上面に固定するようにしたが、梃子となる部材８の上方に重錘１１を配置するのに十分なスペースがないような場合には、図３に示すように、梃子となる部材８の上面、側面および下面におよぶ重錘１３を固定するように構成することができる。   In FIG. 1 and FIG. 2 of the first embodiment, the weight 11 is fixed to the upper surface of the member 8 serving as a lever. However, the weight 11 is sufficient to dispose the weight 11 above the member 8 serving as a lever. When there is no space, as shown in FIG. 3, the weight 13 extending over the upper surface, the side surface, and the lower surface of the member 8 serving as an insulator can be fixed.

図４は図３における重錘の具体例を示す斜視図であり、図４（ａ）はその第１態様を、図４（ｂ）はその第２態様をそれぞれ示している。   4 is a perspective view showing a specific example of the weight in FIG. 3, FIG. 4 (a) shows the first mode, and FIG. 4 (b) shows the second mode.

図４（ａ）に示すように、重錘１３は、立方形状をなし、その一側面に凹部１４が形成されており、この凹部１４に接着剤（図示なし）を塗布した状態で、梃子となる部材８の端部に強嵌合させて、梃子となる部材８に重錘１３を強固に固定するようにしている。また、接着剤による固定に代えて、図４（ｂ）に示すように、重錘１３の上部に凹部１４に至る螺子溝１５ａを形成し、また、梃子となる部材８にも螺子溝１５ｂを形成し、梃子となる部材８の端部を重錘１３の凹部１４へ嵌合させた後、その螺子溝１５ａ，１５ｂに固定螺子１６を螺合させて緊密に固定するようにしてもよい。   As shown in FIG. 4 (a), the weight 13 has a cubic shape, and a concave portion 14 is formed on one side surface thereof, and an adhesive (not shown) is applied to the concave portion 14, and The weight 13 is firmly fitted to the end of the member 8 to be firmly fixed to the member 8 to be the insulator. Further, instead of fixing with an adhesive, as shown in FIG. 4B, a screw groove 15a reaching the concave portion 14 is formed on the upper portion of the weight 13, and the screw groove 15b is also formed on the member 8 serving as a lever. After forming and fitting the end portion of the member 8 serving as a lever to the concave portion 14 of the weight 13, the fixing screw 16 may be screwed into the screw grooves 15a and 15b to be tightly fixed.

このように構成することにより、重錘を配置するのに十分な空間がない場所へも重錘を配置することができる。   By configuring in this way, the weight can be placed even in a place where there is not enough space for placing the weight.

図５は本発明の第３実施例を示す緊張材により鉛直圧縮力を加えた盛土構造物の要部模式図である。ここでは、補強盛土体の下部の部分は省略している。また、吊り下げ部材２２と重錘２１は、補強盛土体３および上部水平載荷板５に触れることがないように空間２３を設けるようにしている。   FIG. 5 is a schematic view of a main part of a banking structure in which a vertical compression force is applied by a tendon material according to a third embodiment of the present invention. Here, the lower part of the reinforcing embankment is omitted. Further, the suspension member 22 and the weight 21 are provided with a space 23 so as not to touch the reinforcing embankment body 3 and the upper horizontal loading plate 5.

この図に示すように、梃子となる部材８の他端部に、吊下げ部材２２によって吊り下げられた、鉛直緊張材９に絶えず鉛直圧縮力を加える重錘２１を設けるように構成している。   As shown in this figure, a weight 21 is provided at the other end portion of the member 8 serving as an insulator, which is suspended by a suspension member 22 and continuously applies a vertical compressive force to the vertical tension member 9. .

以下、かかる緊張材により鉛直圧縮力を加えた盛土構造物の構築方法について説明する。
（１）まず、補強盛土体３の上部水平載荷板５上に、梃子の支点７を有する部材６を設置し、
（２）梃子となる部材８を支点７の上に設置し、
（３）梃子となる部材８の一端が鉛直緊張材９の上端を押し上げるように組み立て、
（４）梃子となる部材８の他方の端部に重錘２１を吊下げ部材２２によって吊り下げ、
（５）補強盛土体３に鉛直圧縮力をかけられるようにした構造物を構築する。 Hereinafter, the construction method of the embankment structure which applied the vertical compressive force with this tendon is demonstrated.
(1) First, the member 6 having the fulcrum 7 of the insulator is installed on the upper horizontal loading plate 5 of the reinforced embankment 3.
(2) The member 8 to be a lever is installed on the fulcrum 7,
(3) Assembling so that one end of the member 8 serving as an insulator pushes up the upper end of the vertical tension member 9,
(4) The weight 21 is suspended by the suspension member 22 at the other end of the member 8 serving as an insulator,
(5) A structure is constructed so that a vertical compressive force can be applied to the reinforced embankment 3.

図６は本発明の第４実施例を示す緊張材により鉛直圧縮力を加えた盛土構造物の要部模式図である。ここでは、補強盛土体の下部の部分は省略している。   FIG. 6 is a schematic view of a main part of a banking structure in which a vertical compressive force is applied by a tension material according to a fourth embodiment of the present invention. Here, the lower part of the reinforcing embankment is omitted.

この図に示すように、梃子となる部材８の他端部には、第１実施例の図１及び図２に示された重錘１１に代えて、下方への適切な押し下げ力が付与される構造物３１によって鉛直緊張材９に絶えず鉛直圧縮力を加えるようにしている。例えば、上記した構造物３１としては、橋台であれば橋桁、その他の基礎構造としての盛土であれば上部の建物、設備など、およびそれらの一部などが挙げられる。   As shown in this figure, an appropriate downward pressing force is applied to the other end portion of the member 8 serving as a lever instead of the weight 11 shown in FIGS. 1 and 2 of the first embodiment. A vertical compressive force is constantly applied to the vertical tendon 9 by the structure 31. For example, as the above-described structure 31, there are a bridge girder in the case of an abutment, an upper building, equipment, etc., and a part of them in the case of embankment as another foundation structure.

なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づいて種々の変形が可能であり、これらを本発明の範囲から排除するものではない。   In addition, this invention is not limited to the said Example, A various deformation | transformation is possible based on the meaning of this invention, and these are not excluded from the scope of the present invention.

本発明の緊張材により鉛直圧縮力を加えた盛土構造物及びその構築方法は、保守の手間を省き、定着部の構成を簡素化し、コストを低減することができ、特に、長大桁の支持に適している。   The embankment structure to which the vertical compressive force is applied by the tendon of the present invention and the construction method thereof can save the labor of maintenance, simplify the structure of the fixing unit, reduce the cost, and particularly support for a large girder. Is suitable.

本発明の第１実施例を示す緊張材により鉛直圧縮力を加えた盛土構造物の模式図である。It is a schematic diagram of the embankment structure which applied the vertical compression force with the tendon which shows 1st Example of this invention. 本発明の第１実施例を示す緊張材により鉛直圧縮力を加えた盛土構造物の作用の説明図である。It is explanatory drawing of an effect | action of the embankment structure which applied the vertical compression force with the tendon which shows 1st Example of this invention. 本発明の第２実施例の緊張材により鉛直圧縮力を加えた盛土構造物の変形例の要部模式図である。It is a principal part schematic diagram of the modification of the embankment structure which applied the vertical compression force with the tendon of 2nd Example of this invention. 図３に示す重錘の具体例を示す斜視図である。It is a perspective view which shows the specific example of the weight shown in FIG. 本発明の第３実施例を示す緊張材により鉛直圧縮力を加えた盛土構造物の要部模式図である。It is a principal part schematic diagram of the embankment structure which applied the vertical compression force with the tendon which shows 3rd Example of this invention. 本発明の第４実施例を示す緊張材により鉛直圧縮力を加えた盛土構造物の要部模式図である。It is a principal part schematic diagram of the embankment structure which applied the vertical compression force with the tendon which shows 4th Example of this invention. 従来のＰＬ／ＰＳ（プレローディド・プレストレス）補強土工法の説明図である。It is explanatory drawing of the conventional PL / PS (preloaded prestress) reinforced earth method.

符号の説明Explanation of symbols

１ 地盤
２ 下部水平載荷板
３ 補強盛土体
４ 水平引張補強材
５ 上部水平載荷板
６ 上部水平載荷板に配置される支点を有する部材
７ 支点
８ 梃子となる部材
９ 鉛直緊張材
１０ 固定治具
１１，１３，２１ 重錘
１４ 凹部
１５ 螺子溝
１６ 固定螺子
２２ 吊下げ部材
２３ 空間
３１ 構造物 DESCRIPTION OF SYMBOLS 1 Ground 2 Lower horizontal loading board 3 Reinforcement embankment body 4 Horizontal tension reinforcement material 5 Upper horizontal loading board 6 Member which has the fulcrum arrange | positioned at an upper horizontal loading board 7 Supporting point 8 The member used as a lever 9 Vertical tension material 10 Fixing jig 11 , 13, 21 Weight 14 Recess 15 Screw groove 16 Fixing screw 22 Suspension member 23 Space 31 Structure

Claims (8)

（ａ）下部水平載荷板と、
（ｂ）該下部水平載荷板の上に構築される補強盛土体と、
（ｃ）該補強盛土体の上に配置される上部水平載荷板と、
（ｄ）該上部水平載荷板上に配置される支点を有する部材と、
（ｅ）前記下部水平載荷板に下端部を接続する鉛直緊張材と、
（ｆ）前記支点を有する部材に設けられる梃子となる部材と、
（ｇ）前記梃子となる部材の一端部に前記鉛直緊張材を固定する固定治具と、
（ｈ）前記梃子となる部材の他端部に作用する重力を利用して前記鉛直緊張材に張力を作用させる荷重を付加する荷重付加手段とを具備し、
（ｉ）該荷重付加手段による荷重の付加により、前記補強盛土体のクリープ変形や前記鉛直緊張材自身の経年変化にかかわらず、前記補強盛土体に常に一定のプレストレスを維持することを特徴とする緊張材により鉛直圧縮力を加えた盛土構造物。 (A) a lower horizontal loading plate;
(B) a reinforced embankment constructed on the lower horizontal loading plate ;
(C) an upper horizontal loading plate disposed on the reinforced embankment;
And (d) member having a fulcrum disposed on the upper horizontal loading plate,
(E) a vertical tension member connecting a lower end to the lower horizontal loading plate ;
(F) a member serving as a lever provided on the member having the fulcrum;
(G) a fixing jig for fixing the vertical tension material to one end of the member to be the insulator;
(H); and a load adding means for adding a load Ru reacted with tension to the vertical tendon by use of gravity acting on the other end of said lever to become member,
(I)該荷by addition of load by polyaddition means, irrespective of the aging of creep deformation and the vertical tension material itself of the reinforcing embankments body constantly and Turkey to maintain a constant prestress the reinforcing embankment body An embankment structure with vertical compressive force applied by a characteristic tension material. 請求項１記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部に固定された重錘であることを特徴とする緊張材により鉛直圧縮力を加えた盛土構造物。   The embankment structure in which a vertical compressive force is applied by the tendon according to claim 1, wherein the load applying means is a weight fixed to the other end of the member serving as the insulator. An embankment structure with compressive force. 請求項１記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部の上面に固定された重錘であることを特徴とする緊張材により鉛直圧縮力を加えた盛土構造物。   The embankment structure which applied the vertical compressive force with the tension material of Claim 1, The said load addition means is the weight fixed to the upper surface of the other end part of the member used as the said insulator, The tension material characterized by the above-mentioned. An embankment structure with vertical compression force applied. 請求項１記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部の上面、側面及び下面に固定された重錘であることを特徴とする緊張材により鉛直圧縮力を加えた盛土構造物。   2. The embankment structure in which a vertical compressive force is applied by the tendon material according to claim 1, wherein the load applying means is a weight fixed to the upper surface, the side surface, and the lower surface of the other end portion of the member serving as the insulator. An embankment structure with vertical compressive force applied by tendons. 請求項１記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部に吊下げ部材により吊り下げられた重錘であることを特徴とする緊張材により鉛直圧縮力を加えた盛土構造物。   The embankment structure to which a vertical compressive force is applied by the tendon according to claim 1, wherein the load applying means is a weight suspended by a suspension member on the other end of the member to be the insulator. An embankment structure with vertical compressive force applied by a tensioning material. 請求項１記載の緊張材により鉛直圧縮力を加えた盛土構造物において、前記荷重付加手段が前記梃子となる部材の他端部に押し下げ力を付与する構造物であることを特徴とする緊張材により鉛直圧縮力を加えた盛土構造物。   The embankment structure which applied the vertical compressive force with the tendon of Claim 1 WHEREIN: The said load addition means is a structure which provides a pushing-down force to the other end part of the member used as the said insulator, The tendon characterized by the above-mentioned. An embankment structure with vertical compression force applied. （ａ）補強盛土体の下部に下部水平載荷板を配置し、
（ｂ）前記補強盛土体の上に上部水平載荷板を配置し、
（ｃ）前記上部水平載荷板上に梃子の支点となる部材を設置し、
（ｄ）梃子となる部材を前記支点の上に設置し、
（ｅ）前記下部水平載荷板に鉛直緊張材の下端部を接続し、
（ｆ）前記梃子となる部材の一端が前記鉛直緊張材の上端を押し上げるように組み立て、
（ｇ）前記梃子となる部材の他方の端部に重錘を固定し、
（ｈ）前記梃子となる部材の他方の端部に作用する重力を利用して前記鉛直緊張材に張力を作用させることにより、前記補強盛土体のクリープ変形や前記鉛直緊張材自身の経年変化にかかわらず、前記補強盛土体に常に一定のプレストレスを維持することができる荷重を付加することを特徴とする緊張材により鉛直圧縮力を加えた構造物の構築方法。 (A) A lower horizontal loading plate is arranged at the lower part of the reinforced embankment,
(B) placing an upper horizontal loading plate on said reinforcing embankments body,
( C ) A member that serves as a fulcrum of the insulator is installed on the upper horizontal loading plate,
( D ) A member to be a lever is installed on the fulcrum,
( E ) Connect the lower end of the vertical tension material to the lower horizontal loading plate,
( F ) Assembling so that one end of the insulator member pushes up the upper end of the vertical tension member,
( G ) A weight is fixed to the other end of the insulator member,
By applying a tension to the vertical tendon by use of gravity acting on the other end of the (h) the said lever member, the aging of creep deformation and the vertical tension material itself of the reinforcing embankment body though, how to build a structure obtained by adding the vertical compressive forces by tendons, which comprises adding the load can be always maintained constant prestress the reinforcing embankment body. （ａ）補強盛土体の下部に下部水平載荷板を配置し、
（ｂ）前記補強盛土体の上に上部水平載荷板を配置し、
（ｃ）前記上部水平載荷板上に梃子の支点となる部材を設置し、
（ｄ）梃子となる部材を前記支点の上に設置し、
（ｅ）前記下部水平載荷板に鉛直緊張材の下端部を接続し、
（ｆ）前記梃子となる部材の一端が前記鉛直緊張材の上端を押し上げるように組み立て、
（ｇ）前記梃子となる部材の他方の端部に重錘を吊下げ部材によって吊り下げ、
（ｈ）前記梃子となる部材の他方の端部に作用する重力を利用して前記鉛直緊張材に張力を作用させることにより、前記補強盛土体のクリープ変形や前記鉛直緊張材自身の経年変化にかかわらず、前記補強盛土体に常に一定のプレストレスを維持することができる荷重を付加することを特徴とする緊張材により鉛直圧縮力を加えた構造物の構築方法。 (A) A lower horizontal loading plate is arranged at the lower part of the reinforced embankment,
( B ) An upper horizontal loading plate is disposed on the reinforced embankment,
(C) installing the member as a lever fulcrum to the upper portion horizontal loading plate,
( D ) A member to be a lever is installed on the fulcrum,
( E ) Connect the lower end of the vertical tension material to the lower horizontal loading plate,
( F ) Assembling so that one end of the insulator member pushes up the upper end of the vertical tension member,
( G ) A weight is suspended by a suspension member at the other end of the member that becomes the insulator,
By applying a tension to the vertical tendon by use of gravity acting on the other end of the (h) the said lever member, the aging of creep deformation and the vertical tension material itself of the reinforcing embankment body though, how to build the structure plus the vertical compressive forces by tendons, which comprises adding the load can be always maintained constant prestress the reinforcing embankment body.
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