【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は地下に埋設される貯
水槽/浸透槽等の構成部材あるいは軽量盛土の芯材ある
いは軽量構造材となる軽量部材の補強技術に属する。
【０００２】
【従来の技術】雨水を一時的あるいは常時貯留するた
め、地下に設置される貯水槽/浸透槽等の構成部材、軟
弱地盤の改良等の目的のために使用される軽量盛土の芯
材となる軽量部材あるいは軽量の構造部材となる軽量部
材は、特開平9-112792、10-252108、H11-222886等各種
提案されている。何れも、軽量かつ強度を確保するため
各単位の軽量部材の中心部に突状部を設け、垂直方向の
耐圧力を高める工夫がされ、また運搬包装の取り扱いに
便利な形状となるよう工夫がなされている。また、垂直
強度を高めるため平板部との接続部あるいは頭頂部にリ
ブを設け強度を高めている。さらに、必要に応じて樹脂
製あるいはコンクリート製の芯を、前記軽量部材の中心
部の突状部に挿入して、その耐圧強度を高めることも適
宜行われている。
【０００３】上記芯材を中空状突状部の中に挿入する方
法は、例えば貯留槽として使用するときに、空隙率が減
少するため,必要な貯留量を確保するためには槽の大き
さを大きくする必要がある。強度を必要とされるが、上
記芯材を挿入するまでもない場合に、耐圧強度を高め、
かつ、空隙率を減少させない補強方法が必要とされる。
【０００４】
【発明が解決しようとする課題】本発明は、軽量部材の
強度を上げるため空隙率を下げることなく強度を増加さ
せる軽量部材の補強材および補強方法の提案にある。
【０００５】
【課題を解決するための手段】本発明は、平板部に中空
状の突起部を有し、かつ、突起部の上端下端にそれぞれ
補強部を有する軽量部材において、突起部の周辺に沿っ
て設けられる軽量部材の補強材である。
【０００６】
【発明の実施の形態】以下本発明を図により詳細に説明
する。図１は、本発明の軽量部材の補強材の概念図であ
る。図２は、軽量部材の概念図である。図３は、軽量部
材の断面を示す図である。図４は、軽量部材に補強材を
組み入れた断面を示す。
【０００７】図1に示す補強材は、戴円錐形状の筒状物
である。図2に示す軽量部材の戴円錐形状の突部の外面
を覆う，あるいは内面に挿入可能な形状となっている。
補強材の形状は図に示す戴円錐形状に限らず，適用する
軽量部材の突部形状に合わせたものとすることができ
る。突部形状が戴多角錐形状のものであれば、それに適
用する補強材も多角錐形状となるのはいうまでもない。
また上記補強材を２重として更に強度を高めることも可
能である。
【０００８】軽量部材は、図２に示すように平板上に開
口する突状部が一つ設けられた形状を有している。しか
し、本補強材は突状部が複数設けられた軽量部材にも適
用可能である。また，軽量部材の平板部がその周辺で突
状部を囲うように立ち上がり容器状あるいは箱状となっ
ていても何らさしつかえがない。
【０００９】上記軽量部材は、突状部がその平坦となっ
た頂点に開口部を設け平板に向かう対円錐形状の突状部
を更に有するものであってもさしつかえがない。その突
状部の外表面あるいは内表面に対応した補強材が可能で
ある。
【００１０】図２に示す軽量部材は、その外側に平板部
に接する部分に、平板部から立ち上がるリブによって補
強されている。また、図３に示す，軽量部材の断面図に
示すように、その突状部の頂点から垂下するリブによっ
て補強されている。かかる軽量部材に補強材を適用した
例が図４にその断面図で示している。
【００１１】図４に示すように、突状部の外面に設けら
れた補強材は、突状部外面に設けられたリブ上から立ち
上がり突状部に至るまでの範囲に設けられることが好ま
しい。また突状部の内面に設けられた補強材は平板部か
ら部から突状部内部に設けられたリブに至る範囲に設け
られるのが好ましい。
【発明の効果】本発明は、平板部に開口する突状部を有
する軽量部材の外周面および内周面に沿って補強材を適
応するため，軽量部材の空隙率を下げることなく強度を
増加させることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing member for a light-weight member serving as a core material of a light-weight embankment or a light-weight structural material such as a water storage tank / penetration tank or the like buried underground. Belongs to technology. 2. Description of the Related Art In order to temporarily or constantly store rainwater, constituent members such as a water storage tank / penetration tank installed underground, and a core of a lightweight embankment used for the purpose of improving soft ground and the like. Various lightweight members, such as materials, or lightweight members, which are lightweight structural members, have been proposed, such as JP-A-9-112792, 10-252108, and H11-222886. In each case, a projecting part is provided at the center of the lightweight member of each unit in order to secure light weight and strength, and it is devised to increase the vertical pressure resistance, and it is devised to have a shape that is convenient for handling transport packaging. Has been done. Further, in order to increase the vertical strength, a rib is provided at a connection portion with the flat plate portion or at the top of the head to increase the strength. Further, if necessary, a core made of resin or concrete is inserted into the protruding portion at the center of the lightweight member so as to increase its pressure resistance. [0003] In the method of inserting the core material into the hollow projection, for example, when used as a storage tank, the porosity is reduced. Need to be larger. Strength is required, but when it is not necessary to insert the core material, increase the pressure resistance,
In addition, a reinforcing method that does not reduce the porosity is required. An object of the present invention is to propose a reinforcing member and a reinforcing method for a lightweight member which increase the strength of the lightweight member without decreasing the porosity in order to increase the strength of the lightweight member. SUMMARY OF THE INVENTION The present invention provides a lightweight member having a hollow projection on a flat plate portion and reinforcing portions at the upper and lower ends of the projection, respectively. It is a reinforcing member for a lightweight member provided along. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a conceptual view of a reinforcing member for a lightweight member according to the present invention. FIG. 2 is a conceptual diagram of a lightweight member. FIG. 3 is a diagram showing a cross section of the lightweight member. FIG. 4 shows a cross section in which a reinforcing member is incorporated into a lightweight member. The reinforcing member shown in FIG. 1 is a conical cylindrical object. The conical projection of the lightweight member shown in FIG. 2 has a shape that covers the outer surface or can be inserted into the inner surface.
The shape of the reinforcing member is not limited to the conical shape shown in the figure, but can be adapted to the shape of the projection of the lightweight member to be applied. If the protruding portion has a polygonal pyramid shape, it goes without saying that the reinforcing material applied thereto also has a polygonal pyramid shape.
It is also possible to further increase the strength by making the reinforcing material double. As shown in FIG. 2, the lightweight member has a shape provided with one protruding portion that opens on a flat plate. However, the present reinforcing material can also be applied to a lightweight member provided with a plurality of protrusions. Further, even if the flat portion of the lightweight member rises so as to surround the protruding portion at the periphery thereof, there is no problem even if it is in the shape of a container or a box. [0009] Even if the above-mentioned lightweight member has an opening at the vertex where the projection is flattened, the projection may further have a conical projection toward the flat plate. A reinforcing material corresponding to the outer surface or inner surface of the protruding portion is possible. The light-weight member shown in FIG. 2 is reinforced by a rib rising from the flat plate portion at a portion contacting the flat plate portion on the outside thereof. Further, as shown in the cross-sectional view of the lightweight member shown in FIG. 3, it is reinforced by a rib hanging down from the apex of the protruding portion. FIG. 4 is a cross-sectional view of an example in which a reinforcing material is applied to such a lightweight member. As shown in FIG. 4, it is preferable that the reinforcing material provided on the outer surface of the protruding portion is provided in a range from the top of the rib provided on the outer surface of the protruding portion to the rising protruding portion. Further, it is preferable that the reinforcing material provided on the inner surface of the protruding portion is provided in a range from the flat plate portion to the rib provided inside the protruding portion. According to the present invention, since the reinforcing material is applied along the outer peripheral surface and the inner peripheral surface of the lightweight member having the protruding portion opened to the flat plate portion, the strength is increased without lowering the porosity of the lightweight member. Can be done.
【図面の簡単な説明】
【図１】は、本発明の補強材の概念図を示す。
【図２】は、軽量部材の概念図である。
【図３】は、軽量部材の断面を示す図である。
【図４】は、軽量部材に補強材を組み入れた一例を示す
概念図である。
【符号の説明】
１ 外補強材
２ 内補強材
３ 軽量部材
４ 突状部
５ 平板部
６ リブBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a conceptual diagram of a reinforcing material of the present invention. FIG. 2 is a conceptual diagram of a lightweight member. FIG. 3 is a diagram showing a cross section of a lightweight member. FIG. 4 is a conceptual diagram showing an example in which a reinforcing material is incorporated into a lightweight member. [Description of Signs] 1 outer reinforcing member 2 inner reinforcing member 3 lightweight member 4 projecting portion 5 flat plate portion 6 rib