JP2015031105A5

JP2015031105A5 -

Info

Publication number: JP2015031105A5
Application number: JP2013162937A
Authority: JP
Filing date: 2013-08-06
Publication date: 2015-05-14
Anticipated expiration: 2033-08-06

Description

（１）擁壁構造Ａは、内部に埋設した鉄筋３…の一部が露出筋部３ｅ…として裏面２ｒ…に露出した壁面パネル２…と、所定角度Ｒｍで起立する主縦筋部４ｖ…及び水平に位置する主横筋部４ｈ…により略Ｌ形に形成し、主縦筋部４ｖ…を露出筋部３ｅ…に固定した複数の主支持筋４…と、露出筋部３ｅ…及び／又は主縦筋部４ｖ…を支持する複数の補助支持筋６…と、被施工面Ｃと壁面パネル２…間に充填した中込コンクリート部７と、を少なくとも備えるため、中間支柱等のコンクリートブロック材が全く不要となり、中間支柱やその型枠等の保管や管理も不要となる。これにより、製造時及び施工時の双方を含む全体のコストダウンを図れるとともに、擁壁全体の面方向における連続性（一体性）を容易に確保でき、擁壁全体の施工品質を容易に高めることができる。しかも、施工時に、断面変更等により計画時の設計が変更された場合でも迅速に対応でき、施工遅れ等の不具合も回避できる。 (1) The retaining wall structure A has a wall panel 2 exposed on the back surface 2r as a part of the reinforcing bars 3 embedded in the interior as an exposed bar 3e, and a main vertical bar 4v standing up at a predetermined angle Rm. And a plurality of main supporting muscles 4 formed by fixing the main longitudinal bars 4v to the exposed stripes 3e, and the exposed stripes 3e, and / or. In order to include at least a plurality of auxiliary support bars 6 that support the main longitudinal bars 4v and the interstitial concrete part 7 filled between the work surface C and the wall panel 2, a concrete block material such as an intermediate column is provided. It becomes completely unnecessary, and storage and management of the intermediate strut and its formwork are also unnecessary. As a result, the overall cost, including both manufacturing and construction, can be reduced, and continuity (integration) in the surface direction of the entire retaining wall can be easily secured, and the construction quality of the entire retaining wall can be easily increased. Can do. In addition, even when the design at the time of planning is changed due to a change in cross-section during construction, it is possible to respond quickly and avoid problems such as construction delays.

主支持筋４は、図６に示すように、所定角度Ｒｍで起立する主縦筋部４ｖ及び水平に位置する主横筋部４ｈにより略Ｌ形に形成する。したがって、主支持筋４は、外周面の軸方向一定間隔おきに多数形成したリング状の大径部（凸部）を有する一本の鋼材を折曲して一体形成できる。主支持筋４は、少なくとも壁面パネル２…を支持できることを考慮して、直径３０〜４０〔ｍｍ〕程度に選定することが望ましい。なお、主横筋部４ｈ及び主縦筋部４ｖの長さは、施工する擁壁Ｗの規模に応じて選定できる。さらに、主縦筋部４ｖについては、別途、直線状に形成した延長用縦筋部を用意し、主縦筋部４ｖに追加連結することにより、主縦筋部４ｖの上端から上方へ延長できるように構成してもよい。このように、主支持部４…を、所定角度Ｒｍで起立する主縦筋部４ｖ…及び水平に位置する主横筋部４ｈ…により略Ｌ形に形成すれば、壁面パネル２…の角度を容易かつ確実に設定できるとともに、壁面パネル２…を確実に支持できる。 As shown in FIG. 6, the main support bar 4 is formed in a substantially L shape by a main vertical bar part 4v standing at a predetermined angle Rm and a main horizontal bar part 4h positioned horizontally. Therefore, the main support bars 4 can be integrally formed by bending a single steel material having a ring-shaped large-diameter portion (convex portion) formed in large numbers at regular intervals in the axial direction of the outer peripheral surface. The main support bars 4 are preferably selected to have a diameter of about 30 to 40 [mm], considering that at least the wall surface panels 2 can be supported. In addition, the length of the main horizontal stripe part 4h and the main vertical stripe part 4v can be selected according to the scale of the retaining wall W to construct. Further, the main vertical streak portion 4v can be extended upward from the upper end of the main vertical streak portion 4v by separately preparing an extension vertical streak portion formed linearly and additionally connecting to the main vertical streak portion 4v. You may comprise as follows. As described above, if the main support portions 4 are formed in a substantially L shape by the main vertical stripes 4v standing up at a predetermined angle Rm and the main horizontal stripes 4h positioned horizontally, the angle of the wall panel 2 is easily set. And it can set reliably and can support wall surface panel 2 ... reliably.