JP2005042318A - Lightweight fill structure and lightweight fill block - Google Patents

Lightweight fill structure and lightweight fill block Download PDF

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Publication number
JP2005042318A
JP2005042318A JP2003200263A JP2003200263A JP2005042318A JP 2005042318 A JP2005042318 A JP 2005042318A JP 2003200263 A JP2003200263 A JP 2003200263A JP 2003200263 A JP2003200263 A JP 2003200263A JP 2005042318 A JP2005042318 A JP 2005042318A
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JP
Japan
Prior art keywords
wall surface
lightweight
lightweight embankment
block
support
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
JP2003200263A
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Japanese (ja)
Inventor
Takehiko Yagyu
武彦 柳生
Hideaki Miyawaki
英彰 宮脇
Katsumi Uchida
勝美 内田
Takasumi Hayashi
香純 林
Koji Watanabe
広治 渡辺
Satoyoshi Amatsuji
吏慶 天辻
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.)
KANEKA KENZAI KK
Achilles Corp
Kaneka Corp
JSP Corp
Dow Kakoh KK
Sekisui Kasei Co Ltd
Original Assignee
KANEKA KENZAI KK
Achilles Corp
Kaneka Corp
Sekisui Plastics Co Ltd
JSP Corp
Dow Kakoh KK
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Publication date
Application filed by KANEKA KENZAI KK, Achilles Corp, Kaneka Corp, Sekisui Plastics Co Ltd, JSP Corp, Dow Kakoh KK filed Critical KANEKA KENZAI KK
Priority to JP2003200263A priority Critical patent/JP2005042318A/en
Publication of JP2005042318A publication Critical patent/JP2005042318A/en
Pending legal-status Critical Current

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  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means which supports a wall-surface protecting material by a simple structure facilitating in-situ construction without the use of an H beam or a foundation, and which makes a wall surface of a stacked structure stably covered with the wall-surface protecting material, while the wall-surface protecting material follows the settlement with time of the stacked structure. <P>SOLUTION: In a lightweight fill structure, lightweight fill blocks 2a and 2b are stacked as a unit on a slope 1 of ground, so that the stacked structure 3 can be constituted; a wall surface of the stacked structure 3 is covered with the wall-surface protecting material 4; and the material 4 is supported by a tension member 5, a bearing plate 6 and a supporting material 7, which are integrated with the lightweight fill block 2a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、発泡合成樹脂からなる軽量盛土材の単位ユニットが積層されてなる積層構造体の壁面に壁面保護材が覆設された軽量盛土構造における壁面保護材の支持構造に関する。
【0002】
【従来の技術】
従来より、軟弱地盤の沈下、凍上防止、騒音防止、断熱効果の向上等を目的として、発泡合成樹脂製の軽量盛土ブロックを用いた軽量盛土工法が実用されており、例えば地盤が傾斜面である場合には、地盤上に複数の軽量盛土ブロックを載置して積層し、該積層構造体の壁面側に壁面防護材としてPC(プレキャストコンクリート)パネルを覆設している。図12は、従来の軽量盛土構造の一例を示すものであるが、傾斜面を有する地盤に基礎90を敷設してH型鋼91を立設し、該H型鋼91に平板状のPCパネル92を固定し、該PCパネル92より内側の傾斜面に軽量盛土ブロック93を積層して積層構造体94を形成し、該積層構造体94の上面にアスファルト舗装やコンクリート舗装、敷石等の敷設材を設置した構造であり、これにより、軽量盛土構造上に道路や建造物を構築することができる。
【0003】
しかし、従来の軽量盛土構造ではH型鋼91を立設するために基礎90を敷設する必要があり、盛土を行う傾斜地が軟弱地盤では基礎90を敷設する前に杭打ちを行う必要も生じる。また、積層構造体94の高さが高い場合には、H型鋼91自体も長くなって重量が増え、更にH型鋼91を支持する基礎90も地中深くにまで打設する必要があり、クレーン等の大型の重機が必要になる等、工事が大掛かりになり、軟弱地盤や傾斜地では現場へのH型鋼91の運搬も困難である等の問題があった。また、積層構造体94は経時的に沈下する場合があるが、PCパネル92が該沈下に追随しないためPCパネル92に負荷が集中して、PCパネル92の継合部分で座屈が生じたりするおそれもある。
【0004】
これに対し、H型鋼を用いずにPCパネル等の壁面保護材を軽量盛土ブロックの壁面側に設ける構成が考案されている。図13は、その軽量盛土構造の一部分を示すものであるが、傾斜面を有する軟弱地盤に敷石等を適宜敷設して軽量盛土ブロック93を積層し、該軽量盛土ブロック93間の境界に、上下方向に爪が突設された平板状の支持材95を介在させるとともに、該支持材95を傾斜面に打ち込んだアンカー96とアンカーベルト97により連結して固定し、該支持材95にPCパネル98を支持させることにより、積層構造体94の壁面にPCパネル98が覆設されている。また、該PCパネル98の上下端に相欠きが形成されており、積層構造体94が沈下した場合に、PCパネル98も上下方向に移動できるようになっている(特許文献1参照)。
【0005】
【特許文献1】
特開平10−168909号公報
【0006】
【発明が解決しようとする課題】
しかし、軽量盛土ブロック93間に支持材95やアンカーベルト97を挟み込むと、支持材95等がない部分に空間が生じるので、積層構造体94の経時的な沈下が大きくなるという欠点がある。また、施工時に多数の支持材95に対応して多数のアンカー96を斜面に打ち込むとともに両部材をアンカーベルト97で連結する作業が必要となり、作業効率がよくないという問題もある。また、アンカー96及びアンカーベルト97は積層構造体94の経時的な沈下に追随しないので、アンカーベルト97に垂直方向の負荷が加わって破断するおそれもある。一方、アンカー96及びアンカーベルト97を設けないこととすれば、軽量盛土ブロック93に貫入している支持材95の爪によってのみPCパネル98を支持することとなり、十分な支持強度が得られない。
【0007】
本発明は、これらの点に鑑みてなされたものであり、H型鋼や基礎を用いることなく、現場施工が容易且つ簡易な構造で壁面保護材を支持し、また、該壁面保護材が積層構造体の経時的な沈下に追随して、積層構造体の壁面に安定的に壁面保護材を覆設する手段を提供することを目的とする。
【0008】
【課題を解決するための手段】
前記課題を解決するためになされた本発明は、発泡合成樹脂からなる軽量盛土材の単位ユニットが積層されてなる積層構造体の壁面に壁面保護材が覆設された軽量盛土構造において、前記軽量盛土材の単位ユニットに引張材が装入され、該引張材が、該単位ユニットの垂直面と接面した支圧板と連結されることにより、前記壁面を構成する側面の方向に対して固定され、前記壁面保護材を支持する支持材が前記引張材と連結されることにより該側面に固定されて、前記引張材、支圧板、及び支持材が該単位ユニットと一体化されたものである。引張材、支圧板、及び支持材が軽量盛土材の単位ユニットと一体化されているので、経時的な沈降の原因となる隙間なく軽量盛土材の単位ユニットが積層され、また、引張材、支圧板、及び支持材は該軽量盛土材の単位ユニットの動きに追随するので、軽量盛土材の沈下により引張材、支圧板、及び支持材に負荷が加わることがない。また、引張材、支圧板、及び支持材を軽量盛土材の単位ユニットと予め一体化しておくことができ、現場作業の軽減を図ることができる。
【0009】
また、本発明は、前記軽量盛土構造において、前記支持材は、壁面保護材を上下方向に摺動可能に支持するものである。これにより、軽量盛土材が上下方向に動いても該動きが壁面保護材に伝達することがないので、軽量盛土材の沈下により引張材、支圧板、及び支持材も連動して動いても、壁面保護材に負荷が加わらず継合部分で座屈等することがない。
【0010】
また、本発明は、前記軽量盛土構造において、前記壁面保護材は、植物育成用土を内包可能なものである。例えば、壁面保護材を網状の部材を適宜連結したものとして、その内部空間に植物育成用土を内包させることにより、軽量盛土構造の壁面を緑化することができる。
【0011】
また、本発明は、前記軽量盛土構造において、前記壁面保護材は、上端及び下端に相欠きが形成され、該相欠きが、上下方向に列設された壁面保護材の相欠きと完全に組み合わないように所定の寸法余裕をもって上下方向に連接されたものである。これにより、壁面保護材が軽量盛土材の単位ユニットの動きに追随することが可能となり、軽量盛土材の沈下により壁面保護材に無理な負荷が加わることがない。
【0012】
また、本発明は、軽量盛土構造の壁面側に軽量盛土材として積層される発泡合成樹脂製の軽量盛土ブロックであって、軽量盛土ブロックに引張材が装入され、該引張材が、軽量盛土ブロックの垂直面と接面した支圧板と連結されることにより、前記壁面を構成する側面の方向に対して固定され、壁面保護材を支持する支持材が前記引張材と連結されることにより該側面に固定されて、前記引張材、支圧板、及び支持材が該軽量盛土ブロックと一体化されたものである。予め工場等において、引張材、支圧板、及び支持材と軽量盛土ブロックとを一体化しておくことにより、現場作業の軽減を図ることができる。
【0013】
【発明の実施の形態】
以下、本発明の実施の形態に係る軽量盛土構造を図面に基づき具体的に説明する。
本軽量盛土構造は、図1に示すように、地盤の斜面1に軽量盛土ブロック2a,2b(軽量盛土材)が単位ユニットとして積層されて積層構造体3が構成され、該積層構造体3の壁面に壁面保護材4が覆設されたものであり、該壁面保護材4は軽量盛土ブロック2aに一体化された引張材5、支圧板6及び支持材7により支持されている。なお、軽量盛土ブロックの下層には整地や水はけを目的に砕石が敷設され、積層構造体3の上層には、アスファルト舗装やコンクリート舗装がなされるが、これらは周知且つ任意なものであるので詳細な説明は省略する。
【0014】
図2は、前記積層構造体3の壁面側に積層されている軽量盛土ブロック2aを示すものであるが、軽量盛土ブロック2aは、図に示すように、例えば、ポリスチレン、ポリオレフィン、ウレタン等の合成樹脂の発泡体からなる直方体であり、その大きさは特に限定されるものではなく、積層方法によって多種の大きさの物を用いることもできるが、その幅×奥行×高さは概ね1000mm×2000mm×500mm程度のものである。図2においては、軽量盛土ブロック2aの手前側の側面20が、図1に示した前記積層構造体3の谷側の壁面を構成し、該側面20を覆うように前記壁面保護材4が設けられることとなる。図には示していないが、前記軽量盛土ブロック2bも軽量盛土ブロック2aと同様の発泡合成樹脂製の直方体であるが、図1に示すように、積層構造体3の内部に配設されるものであり、前記軽量盛土ブロック2aのように積層構造体3の壁面を構成するものではない。このような発泡合成樹脂製の軽量盛土ブロック2a,2bを用いて盛土を行うことにより、盛土が地面に与える負荷を少なくすることができるので、特に沈下のおそれのある軟弱地盤に好適である。なお、軽量盛土ブロック2a,2bの形状は概ね直方体であるが、排水用の溝等を適宜形成したり、積層構造体3の形状等に従って切断等の現場加工を施してもよい。例えば、軽量盛土ブロック2a,2bの上下面及び側面に凹溝を複数形成し、該凹溝が積層された軽量盛土ブロック2a,2b間において連通するようにすれば、積層構造体3に雨水等の排水路が形成され、冠水等により軽量盛土ブロック2a,2bに浮力が生じることを防止できるので好適である。
【0015】
また、前記軽量盛土ブロック2aには、前記側面20と該側面20と対向する背面21を水平方向に貫通するように貫通孔が形成されており、該貫通孔に棒状の引張材5が装入されている。該引張材5は、背面21と接面する支圧板6と、側面20に固定される支持材7とを連結するものであり、支持材7に壁面保護材4が連結された状態で、該支持材7を側面20に固定できる強度を有するものである。このような引張材5としては、金属や合成樹脂、それらの繊維束等を用いることができる。なお、本実施の形態では、引張材5を棒状のものとしたが、例えば平板や帯状等の他の形態とすることも可能である。
【0016】
支圧板6は、軽量盛土ブロック2aの背面21、即ち前記引張材5の長手方向に直交する垂直面と接面した状態で該引張材5と連結されている。該支圧板6は、矩形の平板60と該平板60に配設された連結部61とからなるものであり、平板60と軽量盛土ブロック2aの背面21とが接面することにより、側面20方向に対する支持力を引張材5に付与している。連結部61は、引張材5との関係で周知且つ任意の構成を採用することができ、例えば、引張材5が鋼材であれば、引張材5の端部に雄ネジを、連結部61の内面に雌ネジを形成して、引張材5と支圧板6とを連結することができる。また、軽量盛土ブロック2a,2bを隙間なく積層するためには、軽量盛土ブロック2aの背面21に支圧板6が埋没可能な凹陥を形成して、支圧板6が軽量盛土ブロック2aの背面21から後方へ突出しないようにすることが好ましい。
【0017】
支持材7は、前記引張材5と連結されることにより軽量盛土ブロック2aの側面20に固定されている。該支持材7は、側面20と同高さの矩形の平板70と該平板70の背面に配設された連結部71と、該平板70の表面に垂直方向に所定間隔で列設された支持リング72とからなるものであり、前記引張材5からの引張力を受けて、該平板70が側面20に圧接することにより固定されている。連結部71は、前記連結部61と同様に周知且つ任意の構成を採用することができる。また、前記平板70が側面20と圧接できるように、軽量盛土ブロック2aの側面20に該連結部71が埋没可能な凹陥が形成されている。支持リング72は、内空の軸線を上下方向に向けて平板70に固定されており、所定間隔で列設された3つの支持リング72は、各内空の軸線が同一軸線となるように配置されている。
【0018】
このように、積層構造体3の壁面側に積層される軽量盛土ブロック2aには、引張材5、支圧板6、及び支持材7が一体化されている。図2に示すように、該引張材5、支圧板6、及び支持材7は、軽量盛土ブロック2aの側面20に対して左右2個所に対称に設けることにより壁面保護材4を安定的に支持できるので好ましいが、軽量盛土ブロック2aの側面20の大きさやコスト等を考慮して適宜増減できることは勿論である。軽量盛土ブロック2aと引張材5、支圧板6、及び支持材7との一体化は、軽量盛土ブロック2aを発泡成形する工場等で予め行うことができ、これにより、現場での施工時に斜面にアンカーを打ち込んだり、軽量盛土ブロック2a,2b間に支持材を配設する必要がなく、現場作業の工数が軽減されて作業の効率化を図ることができる。また、引張材5、支圧板6、及び支持材7が軽量盛土ブロック2aと一体化されることにより、軽量盛土ブロック2aを経時的な沈降の原因となる隙間なく積層することができ、また、引張材5、支圧板6、及び支持材7が軽量盛土ブロック2aの動きに追随するので、積層構造体3の沈下等により、引張材5、支圧板6、及び支持材7に無理な負荷が加わって破断等が生じることがない。
【0019】
なお、本実施の形態では、支圧板6は軽量盛土ブロック2aの背面21と接面するものとしたが、図3に示すように、支圧板6を軽量盛土ブロック2aの内部に埋設することも可能である。例えば、引張材5、支圧板6、及び支持材7を軽量盛土ブロック2aを発泡成形するための金型空間内に配置して発泡成形を行うことにより、図2に示すような、引張材5、支圧板6、及び支持材7が一体化された軽量盛土ブロック2aを得ることができる。この場合、支圧板6の平板60が接面する軽量盛土ブロック2aの垂直面は、軽量盛土ブロック2a内に支圧板6が埋設される空間として形成されている。また、図には示していないが、引張材5及び支圧板6の装入は、必ずしも貫通孔等による必要はなく、例えば、軽量盛土ブロック2aの上面から垂直方向に凹欠された溝を側面20から背面21へ渡って形成し、該溝に引張材5を嵌め込むことにより、引張材5を軽量盛土ブロック2aに装入することも可能であり、また、該溝を排水路用の溝として併用することもできる。
【0020】
図4は、前記積層構造体3の壁面側に覆設されている壁面保護材4を示すものであるが、該壁面保護材4は、図に示すように、矩形のパネル40と、該パネル40の背面側にブラケット41により支持された支持棒42とからなるものである。パネル40は、例えば、コンクリートや合成樹脂等からなるものであり、その大きさは特に限定されるものではないが、前記軽量盛土ブロック2aの側面20と同じ大きさのものである。該パネル40の背面中央付近の上下端には、クランプ機能を有するブラケット41が固定されており、該ブラケット41により、支持棒42がパネル40の背面から離間されて支持されている。支持棒42は、例えば、金属や合成樹脂等からなり、前記支持材7の支持リング72に挿入可能な外径のものである。
【0021】
図5は、前記軽量盛土ブロック2aの壁面側に壁面保護材4が覆設された状態を示すものであるが、図に示すように、引張材5の引張力により軽量盛土ブロック2aの側面20に固定された支持材7の支持リング72に前記壁面保護材4の支持棒42が挿通されることにより、該支持材7が、上下方向に摺動自在な状態で壁面保護材4を支持している。図1に示すように、壁面保護材4は、その上下に覆設された他の壁面保護材4の上下端と当接するようにして覆設されているので、上下方向に対しては他の壁面保護材4上に載置され、水平方向に対しては支持材7により支持された状態となる。これにより、積層構造体3の経時的な沈下等により軽量盛土ブロック2aが上下方向に動き、該動きに連動して引張材5、支圧板6、及び支持材7が動いても、壁面保護材4には上下方向の動きが伝達しないので、壁面保護材4に無理な負荷が加わらず、継合部分で座屈等することがない。
【0022】
なお、本実施の形態では、壁面保護材4を軽量盛土ブロック2aの側面20と同じ大きさとして、積層構造体3の壁面側に積層される軽量盛土ブロックをすべて軽量盛土ブロック2aとし、各軽量盛土ブロック2aの支持材7に壁面保護材4を支持させたが、例えば壁面保護材4を軽量盛土ブロック2aの側面20の2面分の大きさとする等すれば、積層構造体3の壁面側すべて軽量盛土ブロック2aとする必要はなく、軽量盛土ブロック2bと交互に配置すればよい。また、本実施の形態では、積層構造体3を構成する軽量盛土材は、工場等で予め発泡成形された軽量盛土ブロック2a,2bとしたが、ウレタン樹脂を現場で吹き付けて発泡させた軽量盛土材を用いることも可能である。この場合、軽量盛土材の単位ユニットは、積層構造体を構成する所定の厚みの各層であり、各層の壁面側に引張材5、支圧板6、及び支持材7を配置してウレタン樹脂を吹き付けることにより、軽量盛土材の単位ユニットと、引張材5、支圧板6、及び支持材7とを一体化させればよい。
【0023】
以下、本発明の第2の実施の形態に係る軽量盛土構造について説明する。
本軽量盛土構造は、前記第1の実施の形態に係る軽量盛土構造と、壁面保護材4及び支持材7の構成のみが異なり、図において同一符号のものは前述と同一のものを示している。図6に示すように、軽量盛土ブロック2aの側面20には、引張材5により支持材7Aが固定されている。該支持材7Aは、矩形の平板70と該平板70の背面に配設された連結部71と、該平板70の表面に上下方向に所定間隔で列設された挟持片73とからなるものである。挟持片73は、図に示すように、鉤状の挟持部73aを有し、左右対称に離間されて一対が配設され、該一対の挟持片73が、上下方向に所定間隔で列設されている。
【0024】
一方、壁面保護材4Aは、図に示すように、矩形のパネル40と、該パネル40の背面側にボルト固定されたH型鋼43とからなるものである。H型鋼43は、フランジ部43aをパネル40の背面から突出するように固定されており、図に示すように、引張材5の引張力により軽量盛土ブロック2aの側面20に固定された支持材7Aの一対の挟持片73が、該フランジ部43aを両側から取り囲むように嵌め合されることにより、支持材7Aが、上下方向に摺動自在な状態でH型鋼43を支持している。これにより、前記第1の実施の形態と同様に、積層構造体3の経時的な沈下等により軽量盛土ブロック2aが上下方向に動き、該動きに連動して引張材5、支圧板6、及び支持材7Aが動いても、壁面保護材4Aには上下方向の動きが伝達しないので、壁面保護材4Aに無理な負荷が加わらず、継合部分で座屈等することがない。
【0025】
以下、本発明の第3の実施の形態に係る軽量盛土構造について説明する。
本軽量盛土構造も、前記第1の実施の形態に係る軽量盛土構造と、壁面保護材4及び支持材7の構成のみが異なり、図において同一符号のものは前述と同一のものを示している。図7に示すように、軽量盛土ブロック2aの側面20には、引張材5により支持材7Bが固定されている。該支持材7Bは、矩形の平板70と該平板70の背面に配設された連結部71と、該平板70の表面に上下方向に所定間隔で列設されたL型フランジ74とからなるものである。L型フランジ74は、図に示すように、底辺に挿通孔74aが形成されており、該挿通孔74aが同一軸線となるように、上下方向に所定間隔で列設されている。
【0026】
一方、壁面保護材4Bは、図に示すように、矩形のパネル40と、該パネル40の背面側にボルト固定されたフック44とからなるものである。該フック44は、下方へ向かってL字型に曲折したものであり、パネル40の背面に、前記L型フランジ74と同一間隔で固定されており、図に示すように、引張材5の引張力により軽量盛土ブロック2aの側面20に固定された支持材7Bの各L型フランジ74の挿通孔74aに対して、該フック44を上方から挿通して係止することにより、支持材7Bが、上下方向に摺動自在な状態で壁面保護材4Bを支持する。これにより、前記第1の実施の形態と同様に、積層構造体3の経時的な沈下等により軽量盛土ブロック2aが上下方向に動き、該動きに連動して引張材5、支圧板6、及び支持材7Bが動いても、壁面保護材4Bには上下方向の動きが伝達しないので、壁面保護材4Bに無理な負荷が加わらず、継合部分で座屈等することがない。なお、前記L型フランジ74の挿通孔74aを水平方向の長穴とすれば、該L型フランジ74にフック44を介して係止された壁面保護材4Bが水平方向にも位置調整可能となるので好適である。
【0027】
以下、本発明の第4の実施の形態に係る軽量盛土構造について説明する。
本軽量盛土構造も、前記第1の実施の形態に係る軽量盛土構造と、壁面保護材4及び支持材7の構成のみが異なり、図において同一符号のものは前述と同一のものを示している。図8に示すように、軽量盛土ブロック2aの側面20には、引張材5により支持材7Cが固定されている。該支持材7Cは、矩形の平板70と該平板70の背面に配設された連結部71と、該平板70の表面に上下方向および幅方向に所定間隔で列設されたL型ブラケット75とからなるものである。L型ブラケット75は上下方向に3つが1列に設けられ、該1列のL型ブラケット75が幅方向に2列設けられている。また、図には示していないが、各L型ブラケット75には、平板70から突出した突部70aにボルト孔が穿たれている。
【0028】
一方、壁面保護材4Cは、図に示すように、矩形のパネル40と、該パネル40の背面側にボルト固定されたL型ブラケット45とからなるものである。該L型ブラケット45は、パネル40の高さと同じ長さであり、パネル40の背面に幅方向の左右に2つ設けられている。また、各パネル40の背面から突出したL型ブラケット45の突部45aには、前記L型ブラケット75に対応させて3つの上下方向の長穴46が形成されている。図に示すように、引張材5の引張力により軽量盛土ブロック2aの側面20に固定された支持材7CのL型ブラケット75と、パネル40の背面に固定されたL型ブラケット45の長穴46とを対応させ、各L型ブラケット75のボルト孔及び長穴46にボルト76を夫々挿通して、L型ブラケット45,75を完全に締結しない程度にやや緩めにナット77を螺合することにより、支持材7Cが、上下方向に摺動自在な状態で壁面保護材4Cを支持している。これにより、前記第1の実施の形態と同様に、積層構造体3の経時的な沈下等により軽量盛土ブロック2aが上下方向に動き、該動きに連動して引張材5、支圧板6、及び支持材7Cが動いても、壁面保護材4Cには上下方向の動きが伝達しないので、壁面保護材4Cに無理な負荷が加わらず、継合部分で座屈等することがない。
【0029】
以下、本発明の第5の実施の形態に係る軽量盛土構造について説明する。
本軽量盛土構造は、前記第1の実施の形態に係る軽量盛土構造と、壁面保護材4のみが異なり、図において同一符号のものは前述と同一のものを示している。図9及び図10に示すように、本実施の形態に係る壁面保護材8は、2枚の網状部材80が前方へ突出するように連結されてなるものであり、該網状部材80に渡って上下方向に支持棒81が左右対称に2本架設されている。網状部材80としては、炭素繊維、合成樹脂、繊維強化プラスチック、不織布等を用いることができ、植物育成用土を内包できればよい。支持棒81は、例えば、金属や合成樹脂等からなり、軽量盛土ブロック2aの側面20に固定された支持材7の支持リング72に挿入可能な外径のものである。なお、本実施の形態では、網状部材80を安定的に支持するために前記支持棒81を左右2個所に対称に設けているが、軽量盛土ブロック2aの側面20の大きさやコスト等を考慮して支持棒81の本数を適宜増減できることは勿論である。
【0030】
図10は、軽量盛土ブロック2aの壁面側に前記壁面保護材8が覆設された状態を示すものであるが、図に示すように、引張材5の引張力により軽量盛土ブロック2aの側面20に固定された支持材7の支持リング72に前記壁面保護材8の支持棒81が挿通されることにより、該支持材7が、上下方向に摺動自在な状態で壁面保護材8を支持している。図に示すように、壁面保護材8の網状部材80の一端を軽量盛土ブロック2a間に挟持させるようにしてもよい。このようにして軽量盛土ブロック2aの側面20に覆設された壁面保護材8に植物育成用土を内包させることにより、軽量盛土構造の壁面を緑化することができる。
【0031】
以下、本発明の第6の実施の形態に係る軽量盛土構造について説明する。
本軽量盛土構造は、前記第1の実施の形態に係る軽量盛土構造と、壁面保護材4及び支持材7の構成のみが異なり、図において同一符号のものは前述と同一のものを示している。図11に示すように、軽量盛土ブロック2aの側面20には、引張材5により支持材7Cが固定されている。該支持材7Cは、前記第4の実施の形態で説明したものであり、矩形の平板70と該平板70の背面に配設された連結部71と、該平板70の表面に上下方向および幅方向に所定間隔で列設されたL型ブラケット75とからなるものであり、各L型ブラケット75には、平板70から突出した部分にボルト孔が穿たれている。
【0032】
一方、壁面保護材4Dは、図に示すように、矩形のパネル47と、該パネル47の背面側にボルト固定されたL型ブラケット48とからなるものである。パネル47は、上端及び下端に相欠き47aが夫々形成されている。該相欠き47aは、上下方向に列設された各壁面保護材4Dの相欠き47aとは完全に組み合わないものであり、図に示すように、所定の寸法余裕dだけ余分に上下方向に切り欠かれている。L型ブラケット48は、パネル47の背面の高さと同じ長さであり、図には示していないが、パネル47の背面に幅方向の左右2個所に設けられている。また、各パネル47の背面に設けられたL型ブラケット48には、前記L型ブラケット75に対応させてボルト孔が穿たれている。
【0033】
図11に示すように、引張材5の引張力により軽量盛土ブロック2aの側面20に固定された支持材7CのL型ブラケット75のボルト孔と、パネル47の背面に固定されたL型ブラケット48のボルト孔とを対応させてボルト76及びナット77で緊締することにより、支持材7Cに壁面保護材4Dが固定される。前述したように、この状態では、各パネル47の相欠き47aは完全に組み合わずに接した状態であり、各相欠き47aには所定の寸法余裕dが生じている。従って、壁面保護材4Dが軽量盛土ブロック2aの動きに追随しても、該動き分は寸法余裕dにより吸収され、積層構造体3の経時的な沈下等により壁面保護材4Dに無理な負荷が加わらず、継合部分で座屈等することがない。
【0034】
【発明の効果】
このように、本発明に係る軽量盛土構造によれば、軽量盛土材の単位ユニットに引張材が装入され、該引張材が、該単位ユニットの垂直面と接面した支圧板と連結されることにより、壁面を構成する側面の方向に対して固定され、前記壁面保護材を支持する支持材が前記引張材と連結されることにより該側面に固定されて、前記引張材、支圧板、及び支持材が該単位ユニットと一体化されたので、経時的な沈降の原因となる隙間なく軽量盛土材の単位ユニットを積層することができる。また、引張材、支圧板、及び支持材が軽量盛土材の単位ユニットの動きに追随するので、軽量盛土材の沈下により引張材、支圧板、及び支持材に負荷が加わらず、これら部材の破断等が生じない。また、引張材、支圧板、及び支持材を軽量盛土材の単位ユニットと予め一体化しておくことにより、現場作業が軽減される。
【0035】
また、本発明によれば、前記支持材は、壁面保護材を上下方向に摺動可能に支持するものとしたので、軽量盛土材が上下方向に動いても該動きが壁面保護材に伝達せず、壁面保護材に無理な負荷が加わらない。
【0036】
また、本発明によれば、前記壁面保護材を植物育成用土を内包可能なものとすることにより、軽量盛土構造の壁面を緑化することができる。
【0037】
また、本発明によれば、前記壁面保護材の上端及び下端に相欠きが形成され、該相欠きが、上下方向に列設された壁面保護材の相欠きと完全に組み合わないように所定の寸法余裕をもって上下方向に連接されたので、壁面保護材が軽量盛土材の単位ユニットの動きに追随することが可能となり、軽量盛土材の沈下により壁面保護材に無理な負荷が加わることがない。
【図面の簡単な説明】
【符号の説明】
【図1】本発明の第1の実施の形態に係る軽量盛土構造を示す斜視図である。
【図2】引張材5、支圧板6、及び支持材7が一体化された軽量盛土ブロック2aを構成を示す斜視図である。
【図3】引張材5、支圧板6、及び支持材7が一体化された軽量盛土ブロック2aを構成を示す斜視図である。
【図4】壁面保護材4の構成を示す斜視図である。
【図5】(a)は、支持材7に支持された壁面保護材4を示す部分断面図であり、(b)は、支持材7に支持された壁面保護材4を示す部分平面図である。
【図6】(a)は、第2の実施の形態に係る支持材7Aに支持された壁面保護材4Aを示す部分断面図であり、(b)は、支持材7Aに支持された壁面保護材4Aを示す部分平面図である。
【図7】第3の実施の形態に係る支持材7Bに支持される壁面保護材4Bを示す部分断面図である。
【図8】(a)は、第4の実施の形態に係る支持材7Cに支持された壁面保護材4Cを示す部分断面図であり、(b)は、支持材7Cに支持された壁面保護材4Cを示す部分平面図である。
【図9】第5の実施の形態に係る壁面保護材8の構成を示す斜視図である。
【図10】支持材7に支持された壁面保護材8を示す部分断面図である。
【図11】第6の実施の形態に係る支持材7Cに支持された壁面保護材4Dを示す部分断面図である。
【図12】従来の軽量盛土構造を示す断面図である。
【図13】H型鋼を使用しない従来の軽量盛土構造を示す断面図である。
【符号の説明】
2a 軽量盛土ブロック
3 積層構造体
4,4A,4B,4C,4D,8 壁面保護材
5 引張材
6 支圧板
7,7A,7B,7C 支持材
47a 相欠き
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support structure for a wall surface protective material in a light weight bank structure in which a wall surface protective material is covered on a wall surface of a laminated structure in which unit units of lightweight bank materials made of foamed synthetic resin are stacked.
[0002]
[Prior art]
Conventionally, a lightweight embankment method using a lightweight embedding block made of foamed synthetic resin has been put into practical use for the purpose of subsidence of soft ground, prevention of frost heave, noise prevention, heat insulation effect, etc., for example, the ground is an inclined surface In some cases, a plurality of lightweight embankment blocks are placed and stacked on the ground, and a PC (precast concrete) panel is provided as a wall surface protective material on the wall surface side of the stacked structure. FIG. 12 shows an example of a conventional lightweight embankment structure. A foundation 90 is laid on a ground having an inclined surface, an H-shaped steel 91 is erected, and a flat PC panel 92 is placed on the H-shaped steel 91. A lightweight embankment block 93 is laminated on an inclined surface on the inner side of the PC panel 92 to form a laminated structure 94, and laying materials such as asphalt pavement, concrete pavement, and paving stones are installed on the upper surface of the laminated structure 94 Thus, roads and buildings can be constructed on the lightweight embankment structure.
[0003]
However, in the conventional light weight embankment structure, it is necessary to lay the foundation 90 in order to erect the H-shaped steel 91, and it is necessary to perform pile driving before laying the foundation 90 on an inclined ground where embankment is performed on soft ground. In addition, when the height of the laminated structure 94 is high, the H-shaped steel 91 itself becomes longer and its weight increases, and further, the foundation 90 that supports the H-shaped steel 91 needs to be driven deep into the ground. Such as large-scale heavy machinery such as is required, the construction is large, and there is a problem that it is difficult to transport the H-shaped steel 91 to the site on soft ground or sloping ground. In addition, the laminated structure 94 may sink over time, but since the PC panel 92 does not follow the sinking, the load concentrates on the PC panel 92 and buckling occurs at the joint portion of the PC panel 92. There is also a risk.
[0004]
On the other hand, the structure which provides wall surface protection materials, such as PC panel, on the wall surface side of a lightweight embankment block, without using H-shaped steel is devised. FIG. 13 shows a part of the light-weight embankment structure. Light-weight embedding blocks 93 are laminated by appropriately laying paving stones or the like on a soft ground having an inclined surface. A flat plate-like support member 95 having claws protruding in the direction is interposed, and the support member 95 is connected and fixed by an anchor 96 and an anchor belt 97 driven into an inclined surface, and the PC panel 98 is fixed to the support member 95. As a result, the PC panel 98 is covered on the wall surface of the laminated structure 94. In addition, phase notches are formed at the upper and lower ends of the PC panel 98, and the PC panel 98 can also move in the vertical direction when the laminated structure 94 sinks (see Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-168909
[0006]
[Problems to be solved by the invention]
However, when the support member 95 or the anchor belt 97 is sandwiched between the light-weight embankment blocks 93, a space is generated in a portion where the support member 95 or the like is not present. In addition, there is a problem in that work efficiency is not good because it is necessary to drive a large number of anchors 96 on the slope corresponding to a large number of support members 95 and to connect both members with an anchor belt 97 during construction. Further, since the anchor 96 and the anchor belt 97 do not follow the subsidence of the laminated structure 94 with time, there is a possibility that the anchor belt 97 is subjected to a load in the vertical direction and is broken. On the other hand, if the anchor 96 and the anchor belt 97 are not provided, the PC panel 98 is supported only by the claws of the support material 95 penetrating into the lightweight embankment block 93, and sufficient support strength cannot be obtained.
[0007]
The present invention has been made in view of these points, and supports a wall protective material with an easy and simple structure without using an H-shaped steel or a foundation, and the wall protective material is a laminated structure. An object of the present invention is to provide a means for stably covering a wall surface of a laminated structure with a wall surface protection member following the body sinking over time.
[0008]
[Means for Solving the Problems]
The present invention, which has been made to solve the above-mentioned problems, is a lightweight embankment structure in which a wall protective material is covered on the wall surface of a laminated structure in which unit units of lightweight embankment materials made of foamed synthetic resin are laminated. A tensile material is inserted into the unit unit of the embankment material, and the tensile material is fixed with respect to the direction of the side surface constituting the wall surface by being connected to a bearing plate in contact with the vertical surface of the unit unit. A support material that supports the wall surface protection material is fixed to the side surface by being connected to the tension material, and the tension material, the bearing plate, and the support material are integrated with the unit unit. Since the tensile material, bearing plate, and support material are integrated with the lightweight embankment unit unit, the lightweight embankment unit unit is laminated without any gaps that cause sedimentation over time. Since the pressure plate and the support material follow the movement of the unit unit of the lightweight embankment material, no load is applied to the tensile material, the bearing plate and the support material due to the sinking of the light weight embankment material. Further, the tension material, the bearing plate, and the support material can be integrated with the unit unit of the lightweight embankment material in advance, so that the work at the site can be reduced.
[0009]
In the lightweight embankment structure according to the present invention, the support material supports the wall surface protection material so as to be slidable in the vertical direction. Thereby, even if the lightweight embankment material moves in the vertical direction, the movement is not transmitted to the wall surface protection material, so even if the tensile material, the bearing plate, and the support material are moved in conjunction with the sinking of the lightweight embankment material, No load is applied to the wall surface protection material, and buckling is not caused at the joint.
[0010]
In the lightweight embankment structure according to the present invention, the wall surface protecting material can include plant growth soil. For example, the wall surface of the lightweight embankment structure can be greened by enclosing the plant-protecting soil in the internal space assuming that the wall surface protective material is appropriately connected with a net-like member.
[0011]
Further, the present invention provides the light-weight embankment structure, wherein the wall surface protective material is formed with a phase notch at an upper end and a lower end, and the phase lack is completely combined with a phased lack of the wall surface protective material arranged in the vertical direction. In order not to be connected, it is connected in the vertical direction with a predetermined dimensional margin. Thereby, the wall surface protection material can follow the movement of the unit unit of the lightweight embankment material, and an unreasonable load is not applied to the wall surface protection material due to the sinking of the light weight embankment material.
[0012]
Further, the present invention is a lightweight embedding block made of foamed synthetic resin that is laminated as a lightweight embankment material on the wall surface side of a light embankment structure, wherein a tensile material is inserted into the lightweight embankment block, and the tensile material is a lightweight embankment. By being connected to a pressure bearing plate that is in contact with the vertical surface of the block, the support material fixed to the direction of the side surface constituting the wall surface and supporting the wall surface protective material is connected to the tension material, Fixed to the side surface, the tension member, the bearing plate, and the support member are integrated with the lightweight embankment block. In a factory or the like, work on site can be reduced by integrating the tension material, the bearing plate, and the support material with the lightweight embankment block in advance.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a lightweight embankment structure according to an embodiment of the present invention will be specifically described with reference to the drawings.
As shown in FIG. 1, the light weight embankment structure is constructed by laminating light weight embankment blocks 2 a and 2 b (light weight embankment materials) as unit units on the slope 1 of the ground. A wall surface protective material 4 is covered on the wall surface, and the wall surface protective material 4 is supported by a tensile material 5, a bearing plate 6 and a support material 7 which are integrated with the lightweight embankment block 2a. In addition, crushed stone is laid in the lower layer of the lightweight embankment block for the purpose of leveling and draining, and the upper layer of the laminated structure 3 is made of asphalt pavement and concrete pavement. The detailed explanation is omitted.
[0014]
FIG. 2 shows a lightweight embankment block 2a laminated on the wall surface side of the laminated structure 3. As shown in the figure, the lightweight embedding block 2a is composed of, for example, polystyrene, polyolefin, urethane or the like. It is a rectangular parallelepiped made of resin foam, and its size is not particularly limited, and various sizes can be used depending on the lamination method, but its width x depth x height is approximately 1000 mm x 2000 mm X about 500 mm. In FIG. 2, the side surface 20 on the near side of the lightweight embankment block 2 a constitutes a wall surface on the valley side of the laminated structure 3 shown in FIG. 1, and the wall surface protective material 4 is provided so as to cover the side surface 20. Will be. Although not shown in the drawing, the light weight embedding block 2b is also a rectangular solid made of foamed synthetic resin similar to the light weight embedding block 2a, but as shown in FIG. The wall surface of the laminated structure 3 is not configured like the lightweight embankment block 2a. By performing embankment using such lightweight synthetic resin blocks 2a and 2b made of foamed synthetic resin, the load applied to the ground by the embankment can be reduced, which is particularly suitable for soft ground where there is a risk of settlement. The lightweight embankment blocks 2a and 2b are generally rectangular parallelepiped, but drainage grooves or the like may be appropriately formed, or field processing such as cutting may be performed according to the shape of the laminated structure 3 or the like. For example, if a plurality of concave grooves are formed on the upper and lower surfaces and the side surfaces of the lightweight embankment blocks 2a and 2b, and the light-weight embankment blocks 2a and 2b in which the concave grooves are stacked communicate with each other, rainwater or the like is added to the laminated structure 3. This is suitable because it is possible to prevent buoyancy from occurring in the lightweight embankment blocks 2a and 2b due to flooding.
[0015]
The light weight embankment block 2a is formed with a through hole so as to penetrate the side surface 20 and the back surface 21 facing the side surface 20 in the horizontal direction, and the rod-like tension member 5 is inserted into the through hole. Has been. The tension member 5 connects the pressure bearing plate 6 that contacts the back surface 21 and the support member 7 fixed to the side surface 20, and in a state where the wall surface protection member 4 is connected to the support member 7, The support material 7 is strong enough to be fixed to the side surface 20. As such a tension material 5, a metal, a synthetic resin, those fiber bundles, etc. can be used. In the present embodiment, the tension member 5 has a rod shape, but other forms such as a flat plate or a belt may be used.
[0016]
The bearing plate 6 is connected to the tension member 5 in a state where it is in contact with the back surface 21 of the lightweight embankment block 2 a, that is, the vertical surface perpendicular to the longitudinal direction of the tension member 5. The bearing plate 6 is composed of a rectangular flat plate 60 and a connecting portion 61 disposed on the flat plate 60, and the flat plate 60 and the back surface 21 of the lightweight embankment block 2a are in contact with each other, so that the direction of the side surface 20 Is provided to the tensile material 5. The connecting portion 61 can adopt a well-known and arbitrary configuration in relation to the tensile material 5. For example, if the tensile material 5 is a steel material, a male screw is attached to the end of the tensile material 5, and the connecting portion 61 An internal thread can be formed on the inner surface to connect the tension member 5 and the bearing plate 6. Moreover, in order to laminate | stack light weight embankment blocks 2a and 2b without a clearance gap, the recess which can bury the bearing plate 6 in the back surface 21 of the lightweight embankment block 2a is formed, and the bearing plate 6 is from the back surface 21 of the lightweight embankment block 2a. It is preferable not to protrude backward.
[0017]
The support member 7 is fixed to the side surface 20 of the lightweight embankment block 2 a by being connected to the tension member 5. The support member 7 includes a rectangular flat plate 70 having the same height as the side surface 20, a connecting portion 71 disposed on the back surface of the flat plate 70, and supports arranged in a row at a predetermined interval on the surface of the flat plate 70. The flat plate 70 is fixed by being pressed against the side surface 20 in response to the tensile force from the tensile member 5. As in the case of the connecting portion 61, the connecting portion 71 can employ a known and arbitrary configuration. In addition, a recess is formed in the side surface 20 of the lightweight embankment block 2a so that the connecting portion 71 can be buried so that the flat plate 70 can be pressed against the side surface 20. The support ring 72 is fixed to the flat plate 70 with the inner axis line oriented in the vertical direction, and the three support rings 72 arranged at predetermined intervals are arranged so that the inner axis lines are the same axis line. Has been.
[0018]
Thus, the tension material 5, the bearing plate 6, and the support material 7 are integrated with the lightweight embankment block 2a laminated on the wall surface side of the laminated structure 3. As shown in FIG. 2, the tension member 5, the bearing plate 6, and the support member 7 support the wall surface protection member 4 stably by providing them symmetrically at two left and right sides with respect to the side surface 20 of the lightweight embankment block 2 a. Although it is preferable, it can be increased or decreased as appropriate in consideration of the size and cost of the side surface 20 of the lightweight embankment block 2a. The integration of the lightweight embankment block 2a with the tension material 5, the bearing plate 6 and the support material 7 can be performed in advance in a factory or the like for foaming the lightweight embankment block 2a. There is no need to drive an anchor or dispose a support material between the light-weight embankment blocks 2a and 2b, and the number of on-site work steps can be reduced and work efficiency can be improved. Further, by integrating the tension material 5, the bearing plate 6 and the support material 7 with the light weight embedding block 2a, the light weight embedding block 2a can be laminated without a gap that causes sedimentation over time, Since the tension member 5, the bearing plate 6 and the support member 7 follow the movement of the lightweight embankment block 2a, an unreasonable load is applied to the tension member 5, the bearing plate 6 and the support member 7 due to the settlement of the laminated structure 3. In addition, no breakage or the like occurs.
[0019]
In the present embodiment, the bearing plate 6 is in contact with the back surface 21 of the lightweight bank block 2a. However, as shown in FIG. 3, the bearing plate 6 may be embedded in the lightweight bank block 2a. Is possible. For example, the tensile material 5, the support plate 6, and the support material 7 are placed in a mold space for foam molding of the lightweight embankment block 2 a and foam molding is performed, as shown in FIG. 2. Thus, a lightweight embankment block 2a in which the bearing plate 6 and the support member 7 are integrated can be obtained. In this case, the vertical surface of the lightweight bank block 2a with which the flat plate 60 of the bearing plate 6 contacts is formed as a space in which the bearing plate 6 is embedded in the lightweight bank block 2a. Moreover, although not shown in the drawing, the insertion of the tension member 5 and the bearing plate 6 is not necessarily performed by a through hole or the like. For example, a groove recessed in the vertical direction from the upper surface of the lightweight embankment block 2a is provided on the side surface. It is possible to insert the tensile material 5 into the lightweight embankment block 2a by forming the tensile material 5 from 20 to the rear surface 21 and fitting the tensile material 5 into the groove. Can also be used together.
[0020]
FIG. 4 shows the wall surface protective material 4 covered on the wall surface side of the laminated structure 3, and the wall surface protective material 4 includes a rectangular panel 40 and the panel as shown in the figure. The support bar 42 is supported by a bracket 41 on the back side of 40. The panel 40 is made of, for example, concrete or synthetic resin, and the size thereof is not particularly limited, but is the same size as the side surface 20 of the lightweight embankment block 2a. Brackets 41 having a clamping function are fixed to upper and lower ends near the center of the back surface of the panel 40, and a support bar 42 is supported by the bracket 41 so as to be separated from the back surface of the panel 40. The support rod 42 is made of, for example, metal or synthetic resin, and has an outer diameter that can be inserted into the support ring 72 of the support material 7.
[0021]
FIG. 5 shows a state in which the wall surface protection material 4 is covered on the wall surface side of the light weight embankment block 2a. As shown in the figure, the side surface 20 of the light weight embankment block 2a by the tensile force of the tension material 5 is shown. When the support rod 42 of the wall surface protection material 4 is inserted into the support ring 72 of the support material 7 fixed to the support material 7, the support material 7 supports the wall surface protection material 4 while being slidable in the vertical direction. ing. As shown in FIG. 1, the wall surface protection material 4 is covered so as to be in contact with the upper and lower ends of the other wall surface protection material 4 covered above and below it. It is placed on the wall surface protection material 4 and is supported by the support material 7 in the horizontal direction. As a result, even if the lightweight embankment block 2a moves up and down due to the subsidence of the laminated structure 3 over time, and the tensile material 5, the bearing plate 6 and the support material 7 move in conjunction with the movement, the wall protection material Since no vertical movement is transmitted to 4, an unreasonable load is not applied to the wall surface protection material 4, and buckling or the like does not occur at the joint portion.
[0022]
In the present embodiment, the wall protection material 4 is the same size as the side surface 20 of the lightweight bank block 2a, and all the lightweight bank blocks stacked on the wall surface side of the laminated structure 3 are the light bank blocks 2a. The wall surface protection material 4 is supported on the support material 7 of the embankment block 2a. For example, if the wall surface protection material 4 has a size corresponding to two of the side surfaces 20 of the lightweight embankment block 2a, the wall surface side of the laminated structure 3 is used. It is not necessary to use all the lightweight bank blocks 2a, and they may be arranged alternately with the lightweight bank blocks 2b. Moreover, in this Embodiment, although the lightweight banking material which comprises the laminated structure 3 was the lightweight banking blocks 2a and 2b previously foam-molded in the factory etc., the lightweight banking which foamed by blowing urethane resin in the field It is also possible to use materials. In this case, the unit unit of lightweight embankment material is each layer of the predetermined thickness which comprises a laminated structure, arrange | positions the tension material 5, the bearing plate 6, and the support material 7 on the wall surface side of each layer, and sprays urethane resin. Accordingly, the unit unit of the lightweight embankment material, the tension material 5, the bearing plate 6 and the support material 7 may be integrated.
[0023]
Hereinafter, the lightweight embankment structure which concerns on the 2nd Embodiment of this invention is demonstrated.
The light weight embankment structure is different from the light weight embankment structure according to the first embodiment only in the configuration of the wall surface protection material 4 and the support material 7, and the same reference numerals in the figure indicate the same as described above. . As shown in FIG. 6, a support material 7 </ b> A is fixed to the side surface 20 of the lightweight embankment block 2 a by a tensile material 5. The support member 7A is composed of a rectangular flat plate 70, a connecting portion 71 disposed on the back surface of the flat plate 70, and sandwiching pieces 73 arranged on the surface of the flat plate 70 in the vertical direction at predetermined intervals. is there. As shown in the drawing, the sandwiching pieces 73 have a bowl-shaped sandwiching portion 73a, and a pair of gripping pieces 73 are arranged symmetrically apart from each other, and the pair of sandwiching pieces 73 are arranged at predetermined intervals in the vertical direction. ing.
[0024]
On the other hand, as shown in the drawing, the wall surface protection member 4A is composed of a rectangular panel 40 and an H-shaped steel 43 bolted to the back side of the panel 40. The H-shaped steel 43 is fixed so that the flange portion 43a protrudes from the back surface of the panel 40. As shown in the figure, the supporting material 7A is fixed to the side surface 20 of the lightweight embankment block 2a by the tensile force of the tensile material 5. The pair of sandwiching pieces 73 are fitted so as to surround the flange portion 43a from both sides, so that the support member 7A supports the H-shaped steel 43 in a slidable manner in the vertical direction. As a result, as in the first embodiment, the lightweight embankment block 2a moves up and down due to the subsidence of the laminated structure 3 with time, etc., and in conjunction with the movement, the tension member 5, the bearing plate 6 and Even if the support member 7A moves, the vertical movement is not transmitted to the wall surface protective material 4A, so that an unreasonable load is not applied to the wall surface protective material 4A, and buckling does not occur at the joint portion.
[0025]
Hereinafter, a lightweight embankment structure according to a third embodiment of the present invention will be described.
This light weight embankment structure is also different from the light weight embankment structure according to the first embodiment only in the configuration of the wall surface protection material 4 and the support material 7, and the same reference numerals in the figure indicate the same as described above. . As shown in FIG. 7, a support material 7 </ b> B is fixed to the side surface 20 of the lightweight embankment block 2 a by a tensile material 5. The support member 7B includes a rectangular flat plate 70, a connecting portion 71 disposed on the back surface of the flat plate 70, and L-shaped flanges 74 arranged on the surface of the flat plate 70 in the vertical direction at predetermined intervals. It is. As shown in the drawing, the L-shaped flanges 74 are formed with insertion holes 74a at the bottom, and are arranged in rows in the vertical direction so that the insertion holes 74a are on the same axis.
[0026]
On the other hand, as shown in the figure, the wall surface protection member 4B is composed of a rectangular panel 40 and a hook 44 bolted to the back side of the panel 40. The hook 44 is bent downward in an L-shape, and is fixed to the back surface of the panel 40 at the same interval as the L-shaped flange 74. As shown in FIG. By inserting and hooking the hook 44 from above to the insertion hole 74a of each L-shaped flange 74 of the support material 7B fixed to the side surface 20 of the lightweight embankment block 2a by force, the support material 7B The wall surface protection material 4B is supported in a state in which it can slide in the vertical direction. As a result, as in the first embodiment, the lightweight embankment block 2a moves up and down due to the subsidence of the laminated structure 3 with time, etc., and in conjunction with the movement, the tension member 5, the bearing plate 6 and Even if the support member 7B moves, since the vertical movement is not transmitted to the wall surface protective material 4B, an unreasonable load is not applied to the wall surface protective material 4B, and buckling does not occur at the joint portion. If the insertion hole 74a of the L-shaped flange 74 is a long slot in the horizontal direction, the position of the wall protection member 4B locked to the L-shaped flange 74 via the hook 44 can be adjusted in the horizontal direction. Therefore, it is preferable.
[0027]
Hereinafter, a lightweight embankment structure according to a fourth embodiment of the present invention will be described.
This light weight embankment structure is also different from the light weight embankment structure according to the first embodiment only in the configuration of the wall surface protection material 4 and the support material 7, and the same reference numerals in the figure indicate the same as described above. . As shown in FIG. 8, a support material 7 </ b> C is fixed to the side surface 20 of the lightweight embankment block 2 a by a tensile material 5. The support member 7C includes a rectangular flat plate 70, a connecting portion 71 disposed on the back surface of the flat plate 70, and L-shaped brackets 75 arranged on the surface of the flat plate 70 in the vertical direction and the width direction at predetermined intervals. It consists of Three L-shaped brackets 75 are provided in one row in the vertical direction, and two rows of the L-shaped brackets 75 are provided in the width direction. Although not shown in the drawing, each L-shaped bracket 75 is provided with a bolt hole in a protrusion 70 a protruding from the flat plate 70.
[0028]
On the other hand, as shown in the drawing, the wall surface protection member 4C is composed of a rectangular panel 40 and an L-shaped bracket 45 that is bolted to the back side of the panel 40. The L-shaped brackets 45 have the same length as the height of the panel 40, and two L-shaped brackets 45 are provided on the rear surface of the panel 40 on the left and right sides in the width direction. Further, three elongated holes 46 in the vertical direction are formed in the protrusion 45 a of the L-shaped bracket 45 protruding from the back surface of each panel 40 so as to correspond to the L-shaped bracket 75. As shown in the figure, the L-shaped bracket 75 of the support material 7C fixed to the side surface 20 of the lightweight embankment block 2a by the tensile force of the tensile material 5, and the long hole 46 of the L-shaped bracket 45 fixed to the back surface of the panel 40. The bolts 76 are inserted into the bolt holes and the long holes 46 of the respective L-shaped brackets 75, and the nuts 77 are screwed together so that the L-shaped brackets 45 and 75 are not completely fastened. The support material 7C supports the wall surface protection material 4C in a state in which it can slide in the vertical direction. As a result, as in the first embodiment, the lightweight embankment block 2a moves up and down due to the subsidence of the laminated structure 3 with time, etc., and in conjunction with the movement, the tension member 5, the bearing plate 6 and Even if the support member 7C moves, the vertical movement is not transmitted to the wall surface protective material 4C, so that an unreasonable load is not applied to the wall surface protective material 4C, and buckling does not occur at the joint portion.
[0029]
Hereinafter, a lightweight embankment structure according to a fifth embodiment of the present invention will be described.
The light weight embankment structure is different from the light weight embankment structure according to the first embodiment only in the wall surface protection material 4, and the same reference numerals in the drawings indicate the same ones as described above. As shown in FIGS. 9 and 10, the wall surface protecting member 8 according to the present embodiment is formed by connecting two mesh members 80 so as to protrude forward, and spans the mesh members 80. Two support rods 81 are installed symmetrically in the vertical direction. As the mesh member 80, carbon fiber, synthetic resin, fiber reinforced plastic, non-woven fabric, or the like can be used as long as it can enclose the soil for plant cultivation. The support bar 81 is made of, for example, metal or synthetic resin, and has an outer diameter that can be inserted into the support ring 72 of the support member 7 fixed to the side surface 20 of the lightweight embankment block 2a. In this embodiment, in order to stably support the mesh member 80, the support rods 81 are provided symmetrically at two left and right locations, but the size and cost of the side surface 20 of the lightweight embankment block 2a are taken into consideration. Of course, the number of the support rods 81 can be appropriately increased or decreased.
[0030]
FIG. 10 shows a state in which the wall surface protective material 8 is covered on the wall surface side of the lightweight embankment block 2a. As shown in the figure, the side surface 20 of the light weight embankment block 2a by the tensile force of the tension material 5 is shown. The support rod 81 of the wall surface protective material 8 is inserted into the support ring 72 of the support material 7 fixed to the support material 7 so that the support material 7 supports the wall surface protective material 8 while being slidable in the vertical direction. ing. As shown in the figure, one end of the mesh member 80 of the wall surface protecting member 8 may be sandwiched between the lightweight embankment blocks 2a. Thus, the wall surface of the lightweight embankment structure can be greened by including the plant-growing soil in the wall surface protection material 8 covered on the side surface 20 of the lightweight embankment block 2a.
[0031]
Hereinafter, a lightweight embankment structure according to a sixth embodiment of the present invention will be described.
The light weight embankment structure is different from the light weight embankment structure according to the first embodiment only in the configuration of the wall surface protection material 4 and the support material 7, and the same reference numerals in the figure indicate the same as described above. . As shown in FIG. 11, a support material 7 </ b> C is fixed to the side surface 20 of the lightweight embankment block 2 a by a tensile material 5. The support material 7C is the same as that described in the fourth embodiment, and includes a rectangular flat plate 70, a connecting portion 71 disposed on the back surface of the flat plate 70, and a vertical direction and a width on the surface of the flat plate 70. The L-shaped brackets 75 are arranged at predetermined intervals in the direction, and each L-shaped bracket 75 has a bolt hole formed in a portion protruding from the flat plate 70.
[0032]
On the other hand, as shown in the drawing, the wall surface protection member 4D is composed of a rectangular panel 47 and an L-shaped bracket 48 bolted to the back side of the panel 47. The panel 47 has phase notches 47a formed at the upper end and the lower end, respectively. The phase notches 47a are not completely combined with the phase notches 47a of the respective wall surface protecting members 4D arranged in the vertical direction. As shown in the figure, the phase notches 47a are cut in the vertical direction by a predetermined dimension margin d. It is missing. The L-shaped bracket 48 has the same length as the height of the back surface of the panel 47, and is provided on the back surface of the panel 47 at two left and right positions in the width direction, although not shown in the drawing. Further, the L-shaped bracket 48 provided on the back surface of each panel 47 has a bolt hole corresponding to the L-shaped bracket 75.
[0033]
As shown in FIG. 11, the bolt hole of the L-shaped bracket 75 of the support material 7 </ b> C fixed to the side surface 20 of the lightweight embankment block 2 a by the tensile force of the tensile material 5, and the L-shaped bracket 48 fixed to the back surface of the panel 47. The wall surface protection member 4D is fixed to the support member 7C by tightening with the bolt 76 and the nut 77 in correspondence with the bolt holes. As described above, in this state, the phase notches 47a of the respective panels 47 are in contact with each other without being completely combined, and a predetermined dimensional margin d is generated in each phase notch 47a. Therefore, even if the wall surface protection material 4D follows the movement of the lightweight embankment block 2a, the movement is absorbed by the dimension allowance d, and an unreasonable load is applied to the wall surface protection material 4D due to the subsidence of the laminated structure 3 over time. In addition, it does not buckle at the joint.
[0034]
【The invention's effect】
As described above, according to the lightweight embankment structure according to the present invention, the tensile material is inserted into the unit unit of the lightweight embankment material, and the tensile material is connected to the bearing plate contacting the vertical surface of the unit unit. The fixing member is fixed with respect to the direction of the side surface constituting the wall surface, and the supporting member that supports the wall surface protecting member is fixed to the side surface by being connected to the tensile member, and the tensile member, the bearing plate, and Since the support material is integrated with the unit unit, the unit unit of the lightweight embankment material can be stacked without a gap that causes the sedimentation over time. In addition, since the tensile material, the bearing plate, and the support material follow the movement of the unit unit of the lightweight embankment material, the tensile material, the bearing plate, and the supporting material are not loaded by the sinking of the lightweight embankment material, and these members break. Etc. does not occur. Further, by integrating the tensile material, the bearing plate, and the support material with the unit unit of the lightweight embankment material in advance, the work at the site is reduced.
[0035]
Further, according to the present invention, the support material supports the wall surface protection material so as to be slidable in the vertical direction. Therefore, even if the lightweight embankment material moves in the vertical direction, the movement is transmitted to the wall surface protection material. Therefore, an excessive load is not applied to the wall surface protective material.
[0036]
Moreover, according to this invention, the wall surface of a lightweight embankment structure can be greened by making the said wall surface protection material can include the soil for plant cultivation.
[0037]
Further, according to the present invention, a phase notch is formed at the upper end and the lower end of the wall surface protective material, and the phase notch is predetermined so as not to be combined completely with the phase wall wall material arranged vertically. Since it is connected in the vertical direction with a dimensional margin, it becomes possible for the wall surface protection material to follow the movement of the unit unit of the lightweight embankment material, and an excessive load is not applied to the wall surface protection material due to the sinking of the light weight embankment material.
[Brief description of the drawings]
[Explanation of symbols]
FIG. 1 is a perspective view showing a lightweight embankment structure according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a configuration of a lightweight embankment block 2a in which a tension member 5, a bearing plate 6 and a support member 7 are integrated.
FIG. 3 is a perspective view showing a configuration of a lightweight embankment block 2a in which a tension member 5, a bearing plate 6 and a support member 7 are integrated.
4 is a perspective view showing a configuration of a wall surface protecting member 4. FIG.
5A is a partial cross-sectional view showing the wall surface protective material 4 supported by the support material 7, and FIG. 5B is a partial plan view showing the wall surface protection material 4 supported by the support material 7. FIG. is there.
6A is a partial cross-sectional view showing a wall surface protection material 4A supported by a support material 7A according to a second embodiment, and FIG. 6B is a wall surface protection material supported by the support material 7A. It is a fragmentary top view which shows material 4A.
FIG. 7 is a partial cross-sectional view showing a wall surface protecting member 4B supported by a supporting member 7B according to a third embodiment.
FIG. 8A is a partial cross-sectional view showing a wall surface protective material 4C supported by a support material 7C according to a fourth embodiment, and FIG. 8B is a wall surface protection supported by a support material 7C. It is a fragmentary top view which shows material 4C.
FIG. 9 is a perspective view showing a configuration of a wall surface protecting member 8 according to a fifth embodiment.
10 is a partial cross-sectional view showing a wall surface protective material 8 supported by a support material 7. FIG.
FIG. 11 is a partial cross-sectional view showing a wall surface protecting member 4D supported by a supporting member 7C according to a sixth embodiment.
FIG. 12 is a cross-sectional view showing a conventional lightweight embankment structure.
FIG. 13 is a cross-sectional view showing a conventional lightweight embankment structure that does not use H-shaped steel.
[Explanation of symbols]
2a Lightweight embankment block
3 Laminated structure
4, 4A, 4B, 4C, 4D, 8 Wall protective material
5 Tensile material
6 bearing plate
7,7A, 7B, 7C Support material
47a Missing

Claims (5)

発泡合成樹脂からなる軽量盛土材の単位ユニットが積層されてなる積層構造体の壁面に壁面保護材が覆設された軽量盛土構造において、
前記軽量盛土材の単位ユニットに引張材が装入され、該引張材が、該単位ユニットの垂直面と接面した支圧板と連結されることにより前記壁面を構成する側面の方向に対して固定され、前記壁面保護材を支持する支持材が前記引張材と連結されることにより該側面に固定されて、前記引張材、支圧板、及び支持材が該単位ユニットと一体化されたことを特徴とする軽量盛土構造。
In the lightweight embankment structure in which the wall protection material is covered on the wall surface of the laminated structure in which the unit units of the lightweight embedding material made of foamed synthetic resin are laminated,
A tensile material is inserted into the unit unit of the lightweight embankment material, and the tensile material is fixed to the direction of the side surface constituting the wall surface by being connected to a bearing plate contacting the vertical surface of the unit unit. The support member supporting the wall surface protection member is fixed to the side surface by being connected to the tension member, and the tension member, the bearing plate and the support member are integrated with the unit unit. Lightweight embankment structure.
前記支持材は、壁面保護材を上下方向に摺動可能に支持するものである請求項1記載の軽量盛土構造。The lightweight embankment structure according to claim 1, wherein the support material supports the wall surface protection material so as to be slidable in the vertical direction. 前記壁面保護材は、植物育成用土を内包可能なものである請求項1又は2記載の軽量盛土構造。The light-weight embankment structure according to claim 1 or 2, wherein the wall surface protective material is capable of including plant-growing soil. 前記壁面保護材は、上端及び下端に相欠きが形成され、該相欠きが、上下方向に列設された壁面保護材の相欠きと完全に組み合わないように所定の寸法余裕をもって上下方向に連接されたものであることを特徴とする請求項1又は2記載の軽量盛土構造。The wall protective material has a notch formed at the upper end and the lower end, and the phase notch is connected in the vertical direction with a predetermined dimension margin so as not to be completely combined with the phase protector of the wall protective material arranged in the vertical direction. The lightweight embankment structure according to claim 1 or 2, wherein 軽量盛土構造の壁面側に軽量盛土材として積層される発泡合成樹脂製の軽量盛土ブロックであって、
軽量盛土ブロックに引張材が装入され、該引張材が、軽量盛土ブロックの垂直面と接面した支圧板と連結されることにより、前記壁面を構成する側面の方向に対して固定され、壁面保護材を支持する支持材が前記引張材と連結されることにより該側面に固定されて、前記引張材、支圧板、及び支持材が該軽量盛土ブロックと一体化されたことを特徴とする軽量盛土ブロック。
It is a lightweight embedding block made of foamed synthetic resin laminated as a lightweight embankment material on the wall surface side of the lightweight embankment structure,
A tensile material is inserted into the lightweight embankment block, and the tensile material is fixed with respect to the direction of the side surface constituting the wall surface by being connected to a bearing plate in contact with the vertical surface of the lightweight embankment block. A light weight characterized in that a support material that supports a protective material is fixed to the side surface by being connected to the tension material, and the tension material, the bearing plate, and the support material are integrated with the lightweight embankment block. Fill block.
JP2003200263A 2003-07-23 2003-07-23 Lightweight fill structure and lightweight fill block Pending JP2005042318A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007170000A (en) * 2005-12-21 2007-07-05 Ranzu Space:Kk Method of constructing lightweight banking structure
CN113147246A (en) * 2021-03-25 2021-07-23 朱伯飞 Method for manufacturing artificial rockery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007170000A (en) * 2005-12-21 2007-07-05 Ranzu Space:Kk Method of constructing lightweight banking structure
CN113147246A (en) * 2021-03-25 2021-07-23 朱伯飞 Method for manufacturing artificial rockery

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