JP4093427B2 - High-strength reinforced concrete precast plate - Google Patents
High-strength reinforced concrete precast plate Download PDFInfo
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- JP4093427B2 JP4093427B2 JP2007126831A JP2007126831A JP4093427B2 JP 4093427 B2 JP4093427 B2 JP 4093427B2 JP 2007126831 A JP2007126831 A JP 2007126831A JP 2007126831 A JP2007126831 A JP 2007126831A JP 4093427 B2 JP4093427 B2 JP 4093427B2
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Description
本発明は高強度鉄筋コンクリートプレキャスト版（以下、高強度ＲＣ・ＰＣａ版という。）に関するものであり、特に、空港のエプロン、誘導路等の広範囲な場所でのコンクリート舗装の急速施工を可能にする高強度ＲＣ・ＰＣａ版に関するものである。 The present invention relates to a high-strength reinforced concrete precast plate (hereinafter referred to as a high-strength RC / PCa plate), and in particular, a high-speed concrete pavement capable of rapid construction in a wide range of places such as an airport apron and a taxiway. It relates to the strength RC / PCa plate.
従来の空港舗装に於いては、主にポストテンションプレストレストコンクリート舗装が行なわれている。
１：舗装領域内の掘削等の路盤工を行なう（ステップＳ１）。
２：舗装領域内へのコンクリート打設のために周辺に型枠を設置する（ステップＳ２）。
３：路盤内のグラウト材の漏出を防止するために路盤工の上にポリエチレンシート等を敷設する（ステップＳ３）。
４：舗装領域内にプレストレス導入のためのシース管及び鉄筋を配設し、該シース管内にＰＣ鋼より線を挿入する（ステップＳ４）。
５：舗装領域内にコンクリートを敷き均す（ステップＳ５）。
６：コンクリートの締固め、粗仕上げをする（ステップＳ６）。
７：コンクリートの養生を行なう（ステップＳ７）。
８：コンクリートにプレストレスを導入する（ステップＳ８）。
９：コンクリートと路盤との間にグラウト材を充填する（ステップＳ９）。
１０：コンクリート舗装完成（ステップＳ１０）。
又、このコンクリート舗装については以下の特徴を有している。
1: Roadbed work such as excavation in the pavement area is performed (step S 1 ).
2: Formwork is installed in the periphery for placing concrete in the pavement area (step S 2 ).
3: laying polyethylene sheet or the like on the roadbed Engineering to prevent leakage of the grout in the roadbed (Step S 3).
4: disposing a sheath tube and rebar for prestressing into the paving area, inserting a PC strand in the sheath tube (Step S 4).
5: leveled laying concrete pavement area (step S 5).
6: Concrete compaction and rough finishing (step S 6 ).
7: carry out the curing of concrete (step S 7).
8: the introduction of concrete in pre-stress (step S 8).
9: A grout material is filled between the concrete and the roadbed (step S 9 ).
10: Concrete paving completed (step S 10).
The concrete pavement has the following characteristics.
１：曲げ作用に対する抵抗性が極めて大きいため、ひび割れが発生しにくい。
２：コンクリート厚が薄い（１８０ｍｍ位）。
３：変形能力が大きい。
４：目地が少ない。略１００ｍ間隔に伸縮目地を設置する。
1: Since resistance to bending is extremely large, cracks are unlikely to occur.
2: The concrete thickness is thin (about 180 mm).
3: Large deformation capability.
4: There are few joints. Telescopic joints are installed at intervals of about 100 m.
上記従来例のコンンクリート舗装は、プレストレス導入のためのシース管の配設、ＰＣ鋼より線の挿入等の準備工が必要になると共に、コンクリート強度の発生を待つ養生並びに暑中及び寒中に打設する場合の養生を経てプレストレスを導入するので工期が長くなり、且つ、施工コストが高い。更に、現場でのコンクリート打設のためコンクリートの品質管理が極めて困難であった。又、伸縮目地の設置も非常にコストが掛っていた。 The above-mentioned conventional concrete pavement requires a preparatory work such as the installation of a sheath tube for introducing pre-stress and insertion of a strand of PC steel, and it is hardened to wait for the generation of concrete strength and to be hit in the heat and cold. Since pre-stress is introduced through the curing in the case of installation, the construction period becomes long and the construction cost is high. Furthermore, it is very difficult to control the quality of the concrete due to the concrete placement on site. Also, the installation of expansion joints was very expensive.
そこで、ポストテンションプレストレストコンクリート舗装と同等以上の強度を保ち、且つ、プレストレス導入設備等の大規模設備が不要で、コンクリート舗装の急速施工が可能となって大幅な工期の短縮による工事費のコストダウンに寄与する高強度ＲＣ・ＰＣａ版を得るために解決すべき技術的課題が生じてくるのであり、本発明はこの課題を解決することを目的とする。 Therefore, the construction cost can be reduced by maintaining a strength equal to or higher than that of post-tensioned prestressed concrete pavement, requiring no large-scale equipment such as prestressing equipment, and enabling rapid construction of concrete pavement, which greatly reduces the construction period. The technical problem which should be solved in order to obtain the high intensity | strength RC * PCa plate which contributes to a down arises, and this invention aims at solving this problem.
本発明は上記目的を達成するために提案されたもので、造成した敷設用路盤の上面に舗装のために敷設される矩形板状のプレキャスト版であって、該プレキャスト版の幅方向に所定間隔で長手方向に平行する上面側の２本の主鉄筋を配設し、該上面側主鉄筋の幅方向中間に下面側の主鉄筋１本が配設され、上記上面側２本の主鉄筋と下面側主鉄筋とを長手方向に連続して配置された斜筋で固着すると共に上記上面側２本の主鉄筋の上面側から長手方向に連続したＳ字形状の波型に形成された水平筋で固着し、上記上面側主鉄筋と下面側主鉄筋とこれ等を固着す上記斜筋、並びに上記水平筋とで断面視３角形状のトラス鉄筋結合体を構成し、該トラス鉄筋結合体を該プレキャスト版の幅方向に所定間隔で配設して成り、且つ、該プレキャスト版は高強度コンクリートを打設して形成する高強度鉄筋コンクリートプレキャスト版となし、
該プレキャスト版の周囲4辺には所定間隔で、該プレキャスト版同士を結合する断面Ｈ形のコッターを取り付けるためのコッター受金具を鉛直に配設し、該コッターの結合フランジには該コッターを該コッター受金具に固定するボルトを挿入するためのボルト孔を開穿し、該ボルト孔に上面よりボルトを挿入して該コッター受金具底部の螺子部に螺合させて成り、更に、該プレキャスト版を製作する型枠の底面に配設された縞鋼板によって、前記プレキャスト版の上面に滑り抵抗を増すためのグルービングを成形して設けると共に、上記プレキャスト版の側面間に断面視六角状のシール溝が形成されるように該プレキャスト版の４周側部に溝用凹所を形成し、且つ該シール溝にポンピング現象による水の浸入を防止するための変成シリコーン系のシール材を貼着して成る高強度鉄筋コンクリートプレキャスト版を提供するものである。
The present invention has been proposed to achieve the above object, and is a rectangular plate-shaped precast plate laid for paving on the upper surface of the laying roadbed, and has a predetermined interval in the width direction of the precast plate. And two main reinforcing bars on the upper surface side parallel to the longitudinal direction are arranged, and one main reinforcing bar on the lower surface side is arranged in the middle in the width direction of the upper surface side main reinforcing bar. A horizontal bar formed in an S-shaped corrugation that is fixed to the lower surface side main reinforcing bar by oblique bars arranged continuously in the longitudinal direction and that is continuous in the longitudinal direction from the upper surface side of the two main reinforcing bars on the upper surface side. The upper surface side main rebar, the lower surface side main rebar, the oblique rebar that fixes them, and the horizontal rebar constitute a truss rebar combined body having a triangular shape in cross section, and the truss rebar combined body is The precast plate is arranged at predetermined intervals in the width direction of the precast plate, and the precast plate High-strength reinforced concrete precast version and without be formed by Da設 the high-strength concrete,
A cotter bracket for attaching a cotter having an H-shaped section for joining the precast plates to each other at four intervals around the precast plate is arranged vertically, and the cotter is attached to the connecting flange of the cotter. A bolt hole for inserting a bolt to be fixed to the cotter bracket is opened, a bolt is inserted into the bolt hole from the upper surface, and screwed into a screw portion at the bottom of the cotter bracket, and further, the precast plate A groove for increasing slip resistance is formed on the upper surface of the precast plate by a striped steel plate disposed on the bottom surface of the mold for manufacturing the seal, and a hexagonal seal groove in cross section is provided between the side surfaces of the precast plate. A modified silicone system for forming groove recesses in the four peripheral sides of the precast plate so as to form water and preventing water from entering the seal groove due to a pumping phenomenon The present invention provides a high-strength reinforced concrete precast plate formed by sticking a sealing material.
この構成によれば、上面側２本の主鉄筋と下面側主鉄筋とを長手方向に連続して配置された斜筋で固着すると共に上記上面側２本の主鉄筋の上面側から長手方向に連続したＳ字形状の波型に形成された水平筋で固着し、上記上面側主鉄筋と下面側主鉄筋とこれ等を固着す上記斜筋、並びに上記水平筋とで断面視３角形状のトラス鉄筋結合体を構成し、該トラス鉄筋結合体を該プレキャスト版の幅方向に所定間隔で配したものであるところ、表面部の剛性が高く、曲げや捩れ等の外力を受けても容易に変形しがたい。 According to this configuration, the two main reinforcing bars on the upper surface side and the main reinforcing bar on the lower surface side are fixed by the oblique bars arranged continuously in the longitudinal direction, and from the upper surface side of the two main reinforcing bars on the upper surface side in the longitudinal direction. It is fixed by horizontal bars formed in a continuous S-shaped corrugated shape, and the upper surface side main reinforcing bars, the lower surface side main reinforcing bars, the oblique bars for fixing them, and the horizontal bars have a triangular shape in a sectional view. Constructing a truss rebar combined body, and arranging the truss rebar combined body at a predetermined interval in the width direction of the precast plate, the surface portion has high rigidity and can be easily subjected to external forces such as bending and twisting. Difficult to deform.
以上説明したように、本発明の高強度鉄筋コンクリートプレキャスト版は、
プレキャスト版の幅方向に所定間隔で長手方向に平行する上面側の２本の主鉄筋を配設し、該上面側主鉄筋の幅方向中間に下面側の主鉄筋１本が配設され、上記上面側２本の主鉄筋と下面側主鉄筋とを長手方向に連続して配置された斜筋で固着すると共に上記上面側２本の主鉄筋の上面側から長手方向に連続したＳ字形状の波型に形成された水平筋で固着し、上記上面側主鉄筋と下面側主鉄筋とこれ等を固着す上記斜筋、並びに上記水平筋とで断面視３角形状のトラス鉄筋結合体を構成し、該トラス鉄筋結合体を該プレキャスト版の幅方向に所定間隔で配設して成り、且つ、該プレキャスト版は高強度コンクリートを打設して形成する高強度鉄筋コンクリートプレキャスト版となしているので、上面側主鉄筋は圧縮に耐え、他方下方側主鉄筋は引張りに耐え得ると共に、更に、これ等両主鉄筋は上記水平筋の固着を受けて断面視３角形状のトラス鉄筋結合体となっているから、少ない鉄筋素材で上面側の剛性が高く、安価で強靭なプレキャスト版を提供することができる。
As explained above, the high-strength reinforced concrete precast plate of the present invention is
Two main reinforcing bars on the upper surface side that are parallel to the longitudinal direction at predetermined intervals in the width direction of the precast plate are disposed, and one main reinforcing bar on the lower surface side is disposed in the middle of the upper surface side main reinforcing bars in the width direction. The two main reinforcing bars on the upper surface side and the lower main reinforcing bar are fixed by oblique bars arranged continuously in the longitudinal direction, and the S-shaped continuous in the longitudinal direction from the upper surface side of the two upper reinforcing bars on the upper surface side. A truss reinforcing bar combined with a triangular shape in cross section is formed by the horizontal bars formed in a corrugated shape, and the upper surface side main reinforcing bars, the lower surface side main reinforcing bars, the oblique bars that fix them, and the horizontal bars. The truss reinforcing bars are arranged at predetermined intervals in the width direction of the precast plate, and the precast plate is a high strength reinforced concrete precast plate formed by placing high strength concrete. The upper side main reinforcing bar withstands compression, while the lower side main reinforcing bar In addition to being able to withstand tension, these two main reinforcing bars are joined to the horizontal bars to form a truss reinforcing bar with a triangular shape in cross section. Can provide a tough precast version.
そして、プレキャスト版の周囲4辺には所定間隔で、該プレキャスト版同士を結合する断面Ｈ形のコッターを取り付けるためのコッター受金具を鉛直に配設し、該コッターの結合フランジには該コッターを該コッター受金具に固定するボルトを挿入するためのボルト孔を開穿し、該ボルト孔に上面よりボルトを挿入して該コッター受金具底部の螺子部に螺合させたので、プレキャスト版同士をコッターで強固に連結することができ、個々のプレキャスト版同士の一体的連結を高め連結版としての機能を効率的に完遂することができる。 A cotter bracket for attaching a cotter having an H-shaped cross section for joining the precast plates to each other at four intervals around the precast plate is arranged vertically, and the cotter is attached to the coupling flange of the cotter. Since the bolt hole for inserting the bolt to be fixed to the cotter bracket is opened, the bolt is inserted into the bolt hole from the upper surface and screwed into the screw portion at the bottom of the cotter bracket. It can be firmly connected with a cotter, and the integrated connection between the individual precast plates can be enhanced, and the function as a connected plate can be efficiently completed.
また、本発明の構成によれば、該プレキャスト版の上面に、上記プレキャスト版の上面側を、該プレキャスト版を製作する型枠の底面に向けて製作するにあたり、該型枠の底面に配設された縞鋼板によって、前記プレキャスト版の上面に、滑り抵抗を増すためのグルービングを形成して設けるので、該グルービングは高強度コンクリートの養生後、該型枠を解体するだけで容易に形成することができ、又、該型枠の底部に配設する板の形状を変えることにより、どんな形状のグルービングでも形成することができ、斯くして、コンクリートの上面での滑り抵抗を増してハイドロプレーニング現象を防止することができる。 Further, according to the configuration of the present invention, the upper surface of the precast plate is disposed on the upper surface of the precast plate so that the upper surface side of the precast plate faces the bottom surface of the mold frame for manufacturing the precast plate. Since the grooving for increasing the slip resistance is provided on the upper surface of the precast plate by the striped steel plate formed, the grooving can be easily formed only by dismantling the formwork after curing high-strength concrete. In addition, by changing the shape of the plate disposed at the bottom of the formwork, any shape of grooving can be formed, thus increasing the slip resistance on the top surface of the concrete and increasing the hydroplaning phenomenon. Can be prevented.
更に、本発明の構成によれば、該プレキャスト版の側部に形成した断面視六角状のシール溝内に、ポンピング現象による水の浸入を防止するための変成シリコーン系のシール材を貼着してなるので、路盤側に発生する水の跳び出し、即ち、ポンピング現象等による水の浸入を防止することができる。斯くして、該プレキャスト版を用いることによりコンクリート舗装の急速施工が可能となり、大幅な工期の短縮及び工事費のコストダウンを図ることができる。 Furthermore, according to the configuration of the present invention, a modified silicone-based sealing material for preventing water intrusion due to a pumping phenomenon is stuck in a hexagonal sealing groove formed in a sectional view formed on a side portion of the precast plate. Therefore, it is possible to prevent water from jumping out on the roadbed side, that is, water intrusion due to a pumping phenomenon or the like. Thus, by using the precast plate, rapid construction of concrete pavement is possible, and the construction period can be greatly shortened and the construction cost can be reduced.
本発明は上記目的を達成するため、プレキャスト版の幅方向に所定間隔で長手方向に平行する上面側の２本の主鉄筋を配設し、該上面側主鉄筋の幅方向中間に下面側の主鉄筋１本が配設され、上記上面側２本の主鉄筋と下面側主鉄筋とを長手方向に連続して配置された斜筋で固着すると共に上記上面側２本の主鉄筋の上面側から長手方向に連続したＳ字形状の波型に形成された水平筋で固着し、上記上面側主鉄筋と下面側主鉄筋とこれ等を固着す上記斜筋、並びに上記水平筋とで断面視３角形状のトラス鉄筋結合体を構成し、該トラス鉄筋結合体を該プレキャスト版の幅方向に所定間隔で配設して成り、且つ、該プレキャスト版は高強度コンクリートを打設して形成する高強度鉄筋コンクリートプレキャスト版となし、プレキャスト版の周囲4辺には所定間隔で、該プレキャスト版同士を結合する断面Ｈ形のコッターを取り付けるためのコッター受金具を鉛直に配設し、該コッターの結合フランジには該コッターを該コッター受金具に固定するボルトを挿入するためのボルト孔を開穿し、該ボルト孔に上面よりボルトを挿入して該コッター受金具底部の螺子部に螺合させて成り、更に、該プレキャスト版を製作する型枠の底面に配設された縞鋼板によって、前記プレキャスト版の上面に滑り抵抗を増すためのグルービングを設けると共に、上記プレキャスト版の側部に形成した断面視六角状のシール溝内に、ポンピング現象による水の浸入を防止するための変成シリコーン系のシール材を貼着して、プレキャスト版でありながら、剛性が高く、耐摩耗性、曲げ強度の大なる高強度プレキャスト版同士を一体化して迅速、低廉に提供することを実現した。 In order to achieve the above object, the present invention has two main reinforcing bars on the upper surface side parallel to the longitudinal direction at a predetermined interval in the width direction of the precast plate, and the lower surface side intermediate the width direction of the upper surface side main reinforcing bars. One main reinforcing bar is disposed, and the two main reinforcing bars on the upper surface side and the main reinforcing bar on the lower surface side are fixed by oblique bars continuously arranged in the longitudinal direction, and the upper surface side of the two main reinforcing bars on the upper surface side. It is fixed by horizontal bars formed in an S-shaped corrugation continuous in the longitudinal direction from the upper side, and the upper surface side main reinforcing bars, the lower surface side main reinforcing bars, the oblique bars that fix them, and the horizontal bars are cross-sectional views. A triangular truss rebar combined body is formed, and the truss reinforcing bar combined is arranged at predetermined intervals in the width direction of the precast plate, and the precast plate is formed by placing high-strength concrete. High strength reinforced concrete precast plate and none, around the precast plate 4 A cotter bracket for attaching a cotter having an H-shaped cross section for joining the precast plates to each other is vertically arranged on the side, and the cotter is fixed to the cotter flange on the coupling flange of the cotter. A bolt hole for inserting a bolt is opened, and a bolt is inserted into the bolt hole from the upper surface and screwed into a screw portion at the bottom of the cotter bracket, and further, a mold for producing the precast plate Grooves for increasing slip resistance are provided on the upper surface of the precast plate by a striped steel plate disposed on the bottom surface, and water caused by a pumping phenomenon is formed in a hexagonal seal groove in cross section formed on the side of the precast plate. Adhering a modified silicone sealant to prevent the intrusion of steel, it is a pre-cast plate, but it is a high-strength pre-plate with high rigidity, high wear resistance and high bending strength. Quickly by integrating Yasuto version of each other, we realized that to provide inexpensively.
以下、本発明の好適な実施例を図１乃至図９に従って詳述する。図１は高強度ＲＣ・ＰＣａ版１の配筋状態を示す平面図である。図１の中心線より上部は該高強度ＲＣ・ＰＣａ版１の長手方向長さの半分を下面から見たものであり、図１の中心線より下部は該高強度ＲＣ・ＰＣａ版１の長手方向長さの半分を上面から見たものである。又、図２は図１の長手方向の側面図を示し、図３は図１の幅方向の断面図を示す。該高強度ＲＣ・ＰＣａ版１の大きさは、例えば、施工現場への搬送等を考慮して長手方向の長さを７．５ｍ、短辺方向の長さ、即ち、幅３．５ｍの矩形板状に形成し、厚さは０．２ｍとする。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. FIG. 1 is a plan view showing a bar arrangement state of a high-strength RC / PCa plate 1. The upper part from the center line of FIG. 1 is a half of the longitudinal direction length of the high-strength RC / PCa plate 1 viewed from the lower surface, and the lower part from the center line of FIG. Half of the direction length is seen from above. 2 shows a side view in the longitudinal direction of FIG. 1, and FIG. 3 shows a sectional view in the width direction of FIG. The size of the high-strength RC / PCa plate 1 is, for example, a rectangle with a length in the longitudinal direction of 7.5 m and a length in the short side, that is, a width of 3.5 m in consideration of transportation to the construction site. It is formed in a plate shape and has a thickness of 0.2 m.
該高強度ＲＣ・ＰＣａ版１の幅方向の所定間隔には、該高強度ＲＣ・ＰＣａ版１の変形性能を高めるためにトラス鉄筋５，５…を配設する。該トラス鉄筋５，５…は、図３に示すように上面側に７０ｍｍの間隔を取って直径１０ｍｍの２本の主鉄筋２，２と下面側に直径１６ｍｍの１本の主鉄筋３とを厚さ方向に１２５．５ｍｍの間隔を取って配設し、上面側の主鉄筋２，２と下面側の主鉄筋３の左右夫々に直径７ｍｍの斜筋４，４…を固着して断面Ｖ字型となるようにし、且つ、該斜筋４，４…図２に示すように長手方向にトラス状に配設して形成する。該上面側の主鉄筋２，２…は圧縮側に、該下面側の主鉄筋３は引張側の鉄筋として作用する。該トラス鉄筋５，５…は鉄筋加工手間を削減するために該高強度ＲＣ・ＰＣａ版１内に組み込む前に、予め該上面側の主鉄筋２，２と該下面側の主鉄筋３と該斜筋４，４とで長手方向に一体化して形成しておく。 In order to improve the deformation performance of the high strength RC / PCa plate 1, truss reinforcing bars 5, 5... Are arranged at predetermined intervals in the width direction of the high strength RC / PCa plate 1. As shown in FIG. 3, the truss rebars 5, 5... Have two main rebars 2 and 2 having a diameter of 10 mm on the upper surface side and one main rebar 3 having a diameter of 16 mm on the lower surface side. The cross section V is arranged with 125.5 mm intervals in the thickness direction, and oblique bars 4, 4... Having a diameter of 7 mm are fixed to the left and right of the main rebars 2, 2 on the upper surface side and the main rebar 3 on the lower surface side, respectively. The slant lines 4, 4... Are formed in a truss shape in the longitudinal direction as shown in FIG. The main rebars 2, 2... On the upper surface side act on the compression side, and the main rebars 3 on the lower surface side act on the tension side. The truss reinforcing bars 5, 5... Are preliminarily attached to the main reinforcing bars 2, 2 on the upper surface side, the main reinforcing bars 3 on the lower surface side, and the main reinforcing bars 3 on the lower surface side before being incorporated into the high-strength RC / PCa plate 1. The oblique lines 4 and 4 are formed integrally in the longitudinal direction.
又、該上面側の主鉄筋２，２と長手方向に平行な位置には所定間隔で直径１３ｍｍの上縦筋６，６…を配設し、該上縦筋６，６…と格子状に直径１３ｍｍの上横筋７，７を配設し、該上縦筋６，６…と該上横筋７，７…とを互に結束線（図示せず）等で結束する。更に、該下面側の主鉄筋３，３…と長手方向に平行な位置には、所定間隔で直径１６ｍｍの下縦筋８，８…と格子状に直径１６ｍｍの下横筋９，９…を配設し、該下縦筋８，８…と該下横筋９，９…とを互に結束線（図示せず）等で結束する。 Further, upper longitudinal bars 6, 6... Having a diameter of 13 mm are disposed at predetermined intervals at positions parallel to the main reinforcing bars 2 and 2 on the upper surface side, and the upper longitudinal bars 6, 6. The upper horizontal stripes 7, 7 having a diameter of 13 mm are arranged, and the upper vertical stripes 6, 6, ... and the upper horizontal stripes 7, 7, ... are bound to each other by a binding line (not shown) or the like. Further, at a position parallel to the longitudinal direction of the main reinforcing bars 3, 3,... On the lower surface side, lower longitudinal bars 8, 8... With a diameter of 16 mm and lower horizontal bars 9, 9. The lower longitudinal bars 8, 8... And the lower horizontal bars 9, 9,... Are bound to each other by a binding line (not shown) or the like.
図４は該トラス鉄筋５を更に補強したものである。図４（ａ）に示すように、Ｖ字型の該トラス鉄筋５を構成する該上面側の主鉄筋２，２間の上面に長手方向にＳ字状の連続した水平筋４０を固着して形成する。斯様に、上記Ｖ字型トラス鉄筋の上面側から上記水平筋４０を固着することにより、上記左右の斜筋４，４が連続して配置された上記Ｖ字型トラス鉄筋と該Ｖ字型トラス鉄筋の上面に固着された上記Ｓ字状に連続した水平筋４０とにより、断面視３角形状のトラス鉄筋結合体が構成されるものである。そして、斯かるトラス鉄筋結合体が該プレキャスト版の幅方向に所定間隔で配設されている。尚、Ｓ字状の水平筋４０は、Ｎ字状に連続して形成してもよい。 FIG. 4 shows the truss reinforcement 5 further reinforced. As shown in FIG. 4A, an S-shaped continuous horizontal bar 40 in the longitudinal direction is fixed to the upper surface between the upper main bars 2 and 2 constituting the V-shaped truss bar 5. Form. Thus, by fixing the horizontal bar 40 from the upper surface side of the V-shaped truss reinforcing bar, the V-shaped truss reinforcing bar in which the left and right oblique bars 4 and 4 are continuously arranged and the V-shaped bar bar are provided. A truss rebar combined body having a triangular shape in a sectional view is constituted by the S-shaped continuous horizontal bars 40 fixed to the upper surface of the truss reinforcing bars. And such a truss reinforcing-bar combination is arrange | positioned by the predetermined direction in the width direction of this precast plate. The S-shaped horizontal stripes 40 may be formed continuously in an N shape.
次に、該高強度ＲＣ・ＰＣａ版１の周囲の４辺には、個々の該高強度ＲＣ・ＰＣａ版１，１…同士を結合して一体性を高め連続板としての設計を可能とするために、後述するように断面Ｈ型のコッター１６，１６…を取り付けるコッター受金具１１，１１…を設置する。該コッター受金具１１，１１…の設置位置は、該高強度ＲＣ・ＰＣａ版１の長手方向には７５０ｍｍ間隔で幅方向には７００ｍｍ間隔を可とする。該高強度ＲＣ・ＰＣａ版１の幅方向の中央部であり、且つ、該トラス鉄筋５の近傍であって、該高強度ＲＣ・ＰＣａ版１の長手方向の両端部から夫々該高強度ＲＣ・ＰＣａ版１の長手方向の長さの４分の１の長さの位置に後述するように該高強度ＲＣ・ＰＣａ版１を敷設した後、路盤Ｇが沈下したときに対応するリフトアップジャッキ取付治具５０を取り付けるためのパイプ１０，１０を設置する。 Next, on the four sides around the high-strength RC / PCa plate 1, the individual high-strength RC / PCa plates 1, 1... Therefore, as will be described later, cotter brackets 11, 11,... For attaching cotters 16, 16,. The cotter brackets 11, 11... Are installed at intervals of 750 mm in the longitudinal direction and 700 mm in the width direction of the high-strength RC / PCa plate 1. The high-strength RC / PCa plate 1 is a central portion in the width direction and in the vicinity of the truss reinforcing bar 5 and from both ends in the longitudinal direction of the high-strength RC / PCa plate 1. Lift-up jack attachment corresponding to when the roadbed G sinks after the high-strength RC / PCa plate 1 is laid at a position of a quarter of the longitudinal length of the PCa plate 1 as will be described later. Pipes 10 and 10 for mounting the jig 50 are installed.
尚、該パイプ１０，１０は、該高強度ＲＣ・ＰＣａ版１を運搬する際に吊り金具としても使用でき、使用しないときはキャップ（図示せず）を螺着しておく。更に、該パイプ１０，１０…は該路盤Ｇとの間にグラウト材を注入孔及びエアー抜き用の孔にも利用できる。 The pipes 10, 10 can also be used as hanging brackets when transporting the high-strength RC / PCa plate 1, and a cap (not shown) is screwed when not in use. Further, the pipe 10, 10,... Can be used as an injection hole and an air vent hole with a grout material between the pipe base G.
前記配筋及び各金具等の設置を完了した後、型枠（図示せず）を用いて高強度コンクリートＲを打設して該高強度ＲＣ・ＰＣａ版１を完成させる。その際、該型枠の底板には該高強度ＲＣ・ＰＣａ版１の上面となる該主鉄筋２側を設置する。 After completing the installation of the bar arrangement and each metal fitting, high strength concrete R is cast using a mold (not shown) to complete the high strength RC / PCa plate 1. At that time, the main reinforcing bar 2 side which is the upper surface of the high-strength RC / PCa plate 1 is installed on the bottom plate of the mold.
従って、該高強度ＲＣ・ＰＣａ版１を製作するときには、現場での使用時に該高強度ＲＣ・ＰＣａ版１の上面側となる面を下に向けて行なう。 Accordingly, when the high-strength RC / PCa plate 1 is manufactured, the surface on the upper surface side of the high-strength RC / PCa plate 1 is directed downward when used in the field.
更に、該型枠の底部には縞鋼板等を配設することにより、該高強度ＲＣ・ＰＣａ版１のコンクリートの上面の滑り抵抗を増すためのグルービングＲの養生後、該型枠を解体するだけで容易に形成することができ、従来のように、コンクリート面をダイヤモンドカッタ等で溝切りする必要もなく、又、該型枠の底部に配設する板の形状を変えることにより、どんな形状のグルービングでも形成することができる。更に、該型枠の側板は、該高強度ＲＣ・ＰＣａ版１の側部１ａ，１ａ，１ｂ，１ｂの垂直方向にテーパーを付けるようにしておく。このテーパーは、後述するように該高強度ＲＣ・ＰＣａ版１の使用中に迅速に部分的に交換が可能とするため隣り合う該高強度ＲＣ・ＰＣａ版１同士の迫りによる抵抗力を小さくするようにするためと該高強度ＲＣ・ＰＣａ版１の敷設後の雨水の流れをスムーズに行なうために設けられる。 Further, by disposing the striped steel plate or the like at the bottom of the formwork, the formwork is disassembled after curing the grooving R to increase the sliding resistance of the upper surface of the concrete of the high strength RC / PCa plate 1. It can be easily formed by itself, and there is no need to groove the concrete surface with a diamond cutter or the like as in the prior art, and any shape can be obtained by changing the shape of the plate arranged at the bottom of the formwork. It can also be formed by grooving. Further, the side plate of the mold is tapered in the vertical direction of the side portions 1a, 1a, 1b, 1b of the high-strength RC / PCa plate 1. As will be described later, this taper reduces the resistance force caused by the close contact between the high-strength RC / PCa plates 1 adjacent to each other so that the high-strength RC / PCa plates 1 can be quickly and partially replaced during use. It is provided in order to make the flow of rainwater smooth and after the laying of the high-strength RC / PCa plate 1.
打設コンクリートは、耐久性、耐摩耗性に優れ、曲げ強度の高い（６０Ｎ／ｍｍ２）の高強度コンクリートＲを使用する。該高強度コンクリートＲを使用することにより、従来のポストテンションプレストレスコンクリート舗装による舗装厚１８０ｍｍを２００ｍｍにすることにより対処することができると共に、従来のコンクリート舗装より安価に製作することができる。 As the cast concrete, high strength concrete R having excellent durability and wear resistance and high bending strength (60 N / mm 2 ) is used. By using the high-strength concrete R, the conventional pavement prestressed concrete pavement can be dealt with by setting the pavement thickness 180 mm to 200 mm, and can be manufactured at a lower cost than the conventional concrete pavement.
又、高強度コンクリートＲを打設した該下面側の主鉄筋３側の下面には、該高強度ＲＣ・ＰＣａ版１を敷設した後、該路盤Ｇとの間にグラウト材（図示せず）を充填する際に該グラウト材が該高強度ＲＣ・ＰＣａ版１の下面に付着しないように付着防止材となるアクリル系又はウレタン系又はフッソ系の樹脂（図示せず）を塗布する等の表面処理を行う。この表面処理の効果は、該高強度ＲＣ・ＰＣａ版１を設置後、前記路盤Ｇが不当沈下した際、充填した該グラウト材は該路盤Ｇと共に沈下するが、該高強度ＲＣ・ＰＣａ版１は沈下せず元の位置に残るようにして、該高強度ＲＣ・ＰＣａ版１の下面と沈下した元のグラウト材との間に新たにグラウト材を注入することで対処しようとするものである。 Further, after the high strength RC / PCa plate 1 is laid on the lower surface of the main reinforcing bar 3 on the lower surface side where the high strength concrete R is placed, a grout material (not shown) is provided between the lower strength G and the roadbed G. A surface such as an acrylic, urethane, or fluorine resin (not shown) that serves as an adhesion preventing material so that the grout material does not adhere to the lower surface of the high-strength RC / PCa plate 1 when filling Process. The effect of this surface treatment is that, after the high strength RC / PCa plate 1 is installed, when the roadbed G sinks improperly, the filled grout material sinks together with the roadbed G, but the high strength RC / PCa plate 1 Is intended to deal with by injecting a new grout material between the lower surface of the high-strength RC / PCa plate 1 and the original grout material that has settled so that it remains in its original position. .
更に、該高強度ＲＣ・ＰＣａ版１の該側部１ａ，１ａ，１ｂ，１ｂの全周には、後述するように該高強度ＲＣ・ＰＣａ版１の敷設重量による前記路盤Ｇ側のポンピング現象を防止するためにシール材３７を貼着する。次に、図５（ａ）（ｂ）により該路盤Ｇに敷設した該高強度ＲＣ・ＰＣａ版１同士を結合する該コッター受金具１１及び該コッター１６を説明する。該コッター受金具１１は、断面Ｃ型の溝穴１２を有するように形成し、該コッター受金具１１，１１を、対峙させて相互にＨ形状に合体した該溝穴１２，１２に断面Ｈ形のコッター１６を垂直に挿入して、該高強度ＲＣ・ＰＣａ版１，１同士を結合する。該コッター受金具１１のカムリップ１４，１４にはその内面１５，１５に該コッター１６の挿入方向の該高強度ＲＣ・ＰＣａ版１の上面から下面に向けて、該コッター受金具１１，１１同士が対峙する該カムリップ１４，１４の外面１３，１３から離れる方向に傾斜したテーパー面を形成する。又、該コッター受け金具１１の該溝穴１２の底部１２ａには該コッター１６を固定するボルト２１のための螺子部２３を刻設する。 Further, the pumping phenomenon on the roadbed G side due to the laying weight of the high-strength RC / PCa plate 1, as will be described later, on the entire periphery of the side portions 1 a, 1 a, 1 b, 1 b of the high-strength RC / PCa plate 1. In order to prevent this, a sealing material 37 is attached. Next, the cotter bracket 11 and the cotter 16 for joining the high-strength RC / PCa plates 1 laid on the roadbed G will be described with reference to FIGS. The cotter bracket 11 is formed to have a C-shaped slot 12 having a cross-section, and the cotter brackets 11, 11 are opposed to each other and joined to each other in an H shape. The high-strength RC / PCa plates 1 and 1 are joined to each other. The cotter brackets 11, 11 of the cotter bracket 11 are connected to the inner surfaces 15, 15 of the cotter bracket 11 from the upper surface to the lower surface of the high strength RC / PCa plate 1 in the insertion direction of the cotter 16. A tapered surface inclined in a direction away from the outer surfaces 13, 13 of the cam lips 14, 14 facing each other is formed. Further, a screw portion 23 for a bolt 21 for fixing the cotter 16 is formed on the bottom portion 12a of the slot 12 of the cotter bracket 11.
該コッター１６は前記したように、該コッター受金具１１，１１同士を対峙させた状態で、その対峙する該溝穴１２，１２の内部に挿入可能な断面Ｈ形に形成し、そのウエブ２０の左右の結合フランジ１９，１９の内面１８，１８，１８，１８にコッター受金具１１，１１の該カムリップ１４，１４の内面１５，１５のテーパー面と同じテーパー角度で、且つ、挿入方向の該高強度ＲＣ・ＰＣａ版１の上面から下面に向けての結合フランジ１９，１９の外面１７，１７に近づく方向に傾斜したテーパー面を形成する。又、該コッター１６の該結合フランジ１９の中央部近傍には該コッター１６を該コッター受金具１１に固定するボルト２１を挿入するためのボルト孔２２を開穿する。 As described above, the cotter 16 is formed in a cross-section H-shape that can be inserted into the slots 12 and 12 facing each other with the cotter brackets 11 and 11 facing each other. The inner surfaces 18, 18, 18, 18 of the left and right coupling flanges 19, 19 have the same taper angle as the tapered surfaces of the inner surfaces 15, 15 of the cam lips 14, 14 of the cotter brackets 11, 11, and the height in the insertion direction. Strength A taper surface inclined in a direction approaching the outer surfaces 17 and 17 of the coupling flanges 19 and 19 from the upper surface to the lower surface of the RC / PCa plate 1 is formed. Further, a bolt hole 22 for inserting a bolt 21 for fixing the cotter 16 to the cotter bracket 11 is opened near the center of the coupling flange 19 of the cotter 16.
以上の構成に於いて、該高強度ＲＣ・ＰＣａ版１，１同士を対峙させたとき、該コッター受金具１１，１１同士も対峙することになり、該コッター受金具１１，１１の該溝穴１２，１２に該コッター１６を挿入し、該コッター受金具１１，１１の該カムリップ１４，１４を該コッター１６の該結合フランジ１９，１９で締め付けると共に、該コッター１６の上面より前記ボルト２１，２１を挿入して該コッター受金具１１，１１の該底部１２ａの該螺子部２３に螺合させて、該コッター１６を介して該高強度ＲＣ・ＰＣａ版１，１同士を結合する。 In the above configuration, when the high-strength RC / PCa plates 1 and 1 are opposed to each other, the cotter brackets 11 and 11 are also opposed to each other. The cotter 16 is inserted into the cotters 12 and 12, the cam lips 14 and 14 of the cotter brackets 11 and 11 are fastened by the coupling flanges 19 and 19 of the cotter 16, and the bolts 21 and 21 are attached from the upper surface of the cotter 16. Is inserted into the screw portion 23 of the bottom portion 12a of the cotter bracket 11, 11, and the high-strength RC / PCa plates 1, 1 are coupled to each other via the cotter 16.
尚、該コッター受金具１１の上面取付位置は、該高強度ＲＣ・ＰＣａ版１の上面位置よりコンクリートを面取り１ｃする分（２５ｍｍ）下げた位置とし、該コッター受金具１１の該外面１３も該高強度ＲＣ・ＰＣａ版１の該側部１ａ，１ａ，１ｂ，１ｂより０．５ｍｍから１ｍｍ控えた位置としてアンカー鉄筋に１ａ，１ａ，１ｂ，１ｂにテーパーを付ける場合には、該コッター受金具１１の取り付けは該側部１ａ，１ａ，１ｂ，１ｂのテーパー面に垂直に設置する。 The upper surface mounting position of the cotter bracket 11 is a position lower than the upper surface position of the high-strength RC / PCa plate 1 by chamfering 1c (25 mm), and the outer surface 13 of the cotter bracket 11 is also When the anchor rebar is tapered to 1a, 1a, 1b, 1b as a position 0.5 mm to 1 mm away from the side portions 1a, 1a, 1b, 1b of the high strength RC / PCa plate 1, the cotter bracket 11 is installed perpendicularly to the tapered surfaces of the side portions 1a, 1a, 1b, 1b.
次に、図６及び図７により該高強度ＲＣ・ＰＣａ版１を敷設後、該路盤Ｇが不同沈下等を起こしたときに対応するための該高強度ＲＣ・ＰＣａ版１のリフトアップ方法を説明する。前記したように該高強度ＲＣ・ＰＣａ版１の幅方向の中心部であって、長手方向に４．５ｍの間隔を取った位置にリフトアップジャッキ取付治具５０を取り付けるためのパイプ１０，１０をコンクリート内に鉛直に埋設する。該パイプ１０は１２ｍｍの肉厚を有し、図６に示すように該高強度ＲＣ・ＰＣａ版１の上面側の内径には該リフトアップジャッキ取付治具５０の軸部５４に刻設されている螺子に螺合する台形螺子５４ａを刻設する。尚、該パイプ１０の上面は該高強度ＲＣ・ＰＣａ版１のコンクリート面より面取り１ｃした分下げた位置とする。 Next, a lift-up method of the high-strength RC / PCa plate 1 to cope with the case where the subbase G undergoes subsidence or the like after laying the high-strength RC / PCa plate 1 according to FIGS. explain. As described above, the pipes 10 and 10 for attaching the lift-up jack attaching jig 50 to the center portion in the width direction of the high-strength RC / PCa plate 1 and spaced at a distance of 4.5 m in the longitudinal direction. Is buried vertically in the concrete. The pipe 10 has a thickness of 12 mm. As shown in FIG. 6, an inner diameter on the upper surface side of the high-strength RC / PCa plate 1 is engraved on the shaft portion 54 of the lift-up jack mounting jig 50. A trapezoidal screw 54a that is screwed into the existing screw is engraved. The upper surface of the pipe 10 is set to a position lowered by a chamfer 1c from the concrete surface of the high-strength RC / PCa plate 1.
図７は該リフトアップジャッキ取付治具５０を示し、上部は上面板５０ａと下面板５０ｃを正方形状にし、左右の側面板５０ｂ，５０ｂを矩形状に構成したリフトアップジャッキ５１取付部とし、下部は該下面板５０ｃの下部に鉛直に固着された軸部５４からなる。該軸部５４の下部外径には該高強度ＲＣ・ＰＣａ版１に設置されている該パイプ１０と螺合する台形螺子５４ａを刻設する。又、該下面板５０ｃと該軸部５４の中央部には、該リフトアップジャッキ５１の伸長力を該路盤Ｇに伝達するロッド５３を貫通させるロッド孔５５を開穿する。該ロッド５３の上部には、該リフトアップジャッキ５１を設置するためのジャッキ受５２を設ける。 FIG. 7 shows the lift-up jack mounting jig 50. The upper portion is a lift-up jack 51 mounting portion in which the upper surface plate 50a and the lower surface plate 50c are square, and the left and right side plates 50b, 50b are rectangular. Consists of a shaft portion 54 that is vertically fixed to the lower portion of the lower surface plate 50c. A trapezoidal screw 54a that engages with the pipe 10 installed on the high-strength RC / PCa plate 1 is engraved on the lower outer diameter of the shaft portion 54. Further, a rod hole 55 through which the rod 53 that transmits the extension force of the lift-up jack 51 to the roadbed G is opened at the center of the lower surface plate 50 c and the shaft portion 54. A jack receiver 52 for installing the lift-up jack 51 is provided on the upper portion of the rod 53.
該高強度ＲＣ・ＰＣａ版１の該パイプ１０に該リフトアップジャッキ取付治具５０を取り付けた後、該リフトアップジャッキ取付治具５０と該路盤Ｇとの間に設置された該ロッド５３の該ジャッキ受５２と該上面板５０ａとの間に該リフトアップジャッキ５１をセットし、該リフトアップジャッキ５１を伸長すると、該ロッド５３を介して該路盤Ｇに反力を取って該リフトアップジャッキ取付治具５０が上昇すると共に該高強度ＲＣ・ＰＣａ版１が上昇する。その後、該高強度ＲＣ・ＰＣａ版１の下面と該路盤Ｇとの間にグラウト材（図示せず）を充填して該路盤Ｇの沈下に対応する。 After attaching the lift-up jack mounting jig 50 to the pipe 10 of the high-strength RC / PCa plate 1, the rod 53 of the rod 53 installed between the lift-up jack mounting jig 50 and the roadbed G is used. When the lift-up jack 51 is set between the jack receiver 52 and the upper surface plate 50a and the lift-up jack 51 is extended, the lift-up jack is attached by taking a reaction force against the roadbed G via the rod 53. As the jig 50 rises, the high-strength RC / PCa plate 1 rises. Thereafter, a grout material (not shown) is filled between the lower surface of the high-strength RC / PCa plate 1 and the roadbed G to cope with the subsidence of the roadbed G.
尚、該高強度ＲＣ・ＰＣａ版１の敷設のための路盤工事を行う際、予め、該路盤Ｇ内に該高強度ＲＣ・ＰＣａ版１の敷設方向に沿い、且つ、該高強度ＲＣ・ＰＣａ版１の該パイプ１０と対応する位置に鋼板からなるリフトアップ用支持板３１をレール状に連続して水平に埋設する。該リフトアップ用支持板３１は該高強度ＲＣ・ＰＣａ版１の長手方向に所定の幅を有し、その上面は該路盤Ｇの上面と一致させ、下部には幅方向に所定の間隔で該路盤Ｇ内での移動を防止するためのアンカー３２，３２を設ける。 In addition, when the roadbed construction for laying the high-strength RC / PCa plate 1 is performed, the high-strength RC / PCa plate 1 is laid in the roadbed G in advance along the laying direction of the high-strength RC / PCa plate 1. A lift-up support plate 31 made of a steel plate is continuously embedded in a rail shape and horizontally in a position corresponding to the pipe 10 of the plate 1. The lift-up support plate 31 has a predetermined width in the longitudinal direction of the high-strength RC / PCa plate 1, and the upper surface thereof coincides with the upper surface of the roadbed G, and the lower portion thereof has a predetermined interval in the width direction. Anchors 32 and 32 for preventing movement in the roadbed G are provided.
次に、該路盤Ｒ内にグラウト材の漏出を防止するための路盤工の上にポリエチレンシート３０を敷設する。該ポリエチレンシート３０の重ね代は所定の長さを確保すると共に、その接合はポリエチレンフィルムを使用する。又、該リフトアップ用支持板３１の上部となる部分には、該リフトアップジャッキ取付治具５０の該ロッド５３の先端によって該ポリエチレンシート３０が破損する虞があるため、該リフトアップ用支持板３１の長手方向に沿って不織布シートからなるクッション材３３を貼着する。 Next, a polyethylene sheet 30 is laid on the roadbed for preventing leakage of the grout material in the roadbed R. The polyethylene sheet 30 has an overlap allowance of a predetermined length, and a polyethylene film is used for the joining. Further, since the polyethylene sheet 30 may be damaged by the tip of the rod 53 of the lift-up jack mounting jig 50 at the upper part of the lift-up support plate 31, the lift-up support plate A cushion material 33 made of a nonwoven fabric sheet is stuck along the longitudinal direction of 31.
次に、図８により該高強度ＲＣ・ＰＣａ版１の側部１ａ，１ａ，１ｂ，１ｂに設けるテーパーについて、説明する。該テーパーは図８（ａ）に示すように、該高強度ＲＣ・ＰＣａ版１を連続して敷設した後、クラウン部３４から両側へ夫々勾配α，α（１％）を付け雨水をスムーズに排水するために設ける。該クラウン部３４に於ける該高強度ＲＣ・ＰＣａ版１の長手方向の該側部１ａ及び幅方向の該側部１ｂの接合面の該テーパー角度βは、図８（ｂ）に示すように該高強度ＲＣ・ＰＣａ版１の側部１の下面よりの直角度に該勾配αを加えた角度とする。 Next, the taper provided on the side portions 1a, 1a, 1b, 1b of the high-strength RC / PCa plate 1 will be described with reference to FIG. As shown in FIG. 8 (a), the taper is constructed by continuously laying the high-strength RC / PCa plate 1 and then applying gradients α and α (1%) from the crown portion 34 to both sides to smoothly drain rainwater. Provided for draining. The taper angle β of the joint surface of the side portion 1a in the longitudinal direction and the side portion 1b in the width direction of the high-strength RC / PCa plate 1 at the crown portion 34 is as shown in FIG. An angle obtained by adding the gradient α to the squareness from the lower surface of the side portion 1 of the high-strength RC / PCa plate 1 is used.
又、敷設した該高強度ＲＣ・ＰＣａ版１の部分的交換を容易にするために、図８（ｃ）に示すように該高強度ＲＣ・ＰＣａ版１の幅方向の該側部１ｂ，１ｂ同士の接合面３５に抜き勾配γを付ける。該抜き勾配γは 該クラウン部３４からの勾配αに沿った該高強度ＲＣ・ＰＣａ版１の下面よりの垂直線に付して該勾配αより大きな角度を取るものとし、１．４〜２．８°を可とする。 Further, in order to facilitate partial replacement of the laid high strength RC / PCa plate 1, the side portions 1b, 1b in the width direction of the high strength RC / PCa plate 1 as shown in FIG. A draft γ is given to the joint surfaces 35 of each other. The draft γ is attached to a vertical line from the lower surface of the high-strength RC / PCa plate 1 along the gradient α from the crown portion 34 and takes an angle larger than the gradient α. .8 ° is acceptable.
一方、該高強度ＲＣ・ＰＣａ版１の長手方向の該側部１ａのテーパーは、前記したように該クラウン部３４側のみに設け、反対側の該側部１ａは該勾配αに対し垂直面に形成する。尚、該テーパーの取付位置及び勾配等は該高強度ＲＣ・ＰＣａ版１，１…によるコンクリート舗装の設計により適宜決定される。 On the other hand, the taper of the side portion 1a in the longitudinal direction of the high-strength RC / PCa plate 1 is provided only on the crown portion 34 side as described above, and the opposite side portion 1a is a plane perpendicular to the gradient α. To form. The taper mounting position, gradient, and the like are appropriately determined by the concrete pavement design using the high-strength RC / PCa plates 1, 1.
次に、図９により該高強度ＲＣ・ＰＣａ版１の該側部１ａ，１ｂの止水方法について説明する。該高強度ＲＣ・ＰＣａ版１，１…を敷設したとき、該高強度ＲＣ・ＰＣａ版１の重量により該路盤Ｇ側に発生するポンピング現象によって、該高強度ＲＣ・ＰＣａ版１，１間に侵入する水を止水するため、該高強度ＲＣ・ＰＣａ版１の下面近傍であって、該高強度ＲＣ・ＰＣａ版１の該側部１ａ，１ｂの接合面に断面が六角形状のシール溝３６を形成する。該シール溝３６は、該高強度ＲＣ・ＰＣａ版１の該側部１ａ，１ｂの全周に渡って設けると共に、該シール溝３６内に変成シリコーン系のシール材３７を貼着してポンピング現象による下面からの水の止水及び上面からの雨水等の止水を行う。 Next, the water stop method for the side portions 1a and 1b of the high-strength RC / PCa plate 1 will be described with reference to FIG. When the high-strength RC / PCa plates 1, 1... Are laid, the pumping phenomenon generated on the roadbed G side due to the weight of the high-strength RC / PCa plates 1, 1 A seal groove having a hexagonal cross section in the joint surface of the side portions 1a and 1b of the high-strength RC / PCa plate 1 in the vicinity of the lower surface of the high-strength RC / PCa plate 1 in order to stop intruding water. 36 is formed. The seal groove 36 is provided over the entire circumference of the side portions 1a and 1b of the high-strength RC / PCa plate 1, and a modified silicone-based seal material 37 is stuck in the seal groove 36 to cause a pumping phenomenon. Water is stopped from the bottom by rainwater and rainwater from the top.
尚、前記一実施の形態で示した高強度ＲＣ・ＰＣａ版の大きさ、鉄筋の大きさ、コッター受金具の取付間隔等はこれに限定されるべきものではなく、該高強度ＲＣ・ＰＣａ版の設計により適宜変更される。 In addition, the size of the high strength RC / PCa plate, the size of the reinforcing bar, the mounting interval of the cotter bracket, etc. shown in the embodiment are not limited to this, and the high strength RC / PCa plate is not limited thereto. It will be changed as appropriate according to the design.
而して、本発明は、本発明の精神を逸脱しない限り種々の改変をなすことができ、そして、本発明は、該改変されたものに及ぶことは当然である。 Thus, the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.
１ 高強度ＲＣ・ＰＣａ版
１ａ，１ｂ 側部
２ 上面側の主鉄筋
３ 下面側の主鉄筋
４ 斜筋
５ トラス鉄筋
１０ パイプ
１１ コッター受金具
１２ 溝穴
１２ａ 底部
１６ コッター
１９ 結合フランジ
２１ ボルト
２２ ボルト孔
２３ 螺子部
３６ シール溝
３７ シール材
４０ 水平筋
Ｇ 路盤
Ｒ 高強度コンクリート
DESCRIPTION OF SYMBOLS 1 High-strength RC / PCa plate 1a, 1b Side 2 Main rebar on the upper surface side 3 Main rebar on the lower surface side 4 Oblique rebar 5 Truss rebar 10 Pipe 11 Cutter bracket 12 Groove hole 12a Bottom 16 Cotter 19 Coupling flange 21 Bolt 22 Bolt Hole 23 Screw part 36 Seal groove 37 Sealing material 40 Horizontal bar G Roadbed R High-strength concrete
Claims (1)
該プレキャスト版の周囲4辺には所定間隔で、該プレキャスト版同士を結合する断面Ｈ形のコッターを取り付けるためのコッター受金具を鉛直に配設し、該コッターの結合フランジには該コッターを該コッター受金具に固定するボルトを挿入するためのボルト孔を開穿し、該ボルト孔に上面よりボルトを挿入して該コッター受金具底部の螺子部に螺合させて成り、更に、該プレキャスト版を製作する型枠の底面に配設された縞鋼板によって、前記プレキャスト版の上面に滑り抵抗を増すためのグルービングを成形して設けると共に、上記プレキャスト版の側面間に断面視六角状のシール溝が形成されるように該プレキャスト版の４周側部に溝用凹所を形成し、且つ該シール溝にポンピング現象による水の浸入を防止するための変成シリコーン系のシール材を貼着して成ることを特徴とする高強度鉄筋コンクリートプレキャスト版。
A rectangular plate-shaped precast plate laid on the upper surface of the constructed laying roadbed for paving, with two main reinforcing bars on the upper surface side parallel to the longitudinal direction at predetermined intervals in the width direction of the precast plate. And one main reinforcing bar on the lower surface side is arranged in the middle of the upper surface side main reinforcing bar in the width direction, and the two main reinforcing bars on the upper surface side and the lower main reinforcing bar are continuously arranged in the longitudinal direction. The upper surface side main reinforcing bars and the lower surface side main reinforcing bars are fixed by horizontal bars formed in an S-shaped corrugation continuous in the longitudinal direction from the upper surface side of the two upper surface side main reinforcing bars. Forming the truss rebar combined body having a triangular shape in a cross-sectional view with the oblique line and the horizontal line to fix the etc., and arranging the truss rebar combined body at a predetermined interval in the width direction of the precast plate, In addition, the precast plate is a high-strength reinforcing steel core formed by placing high-strength concrete. Cleat precast version and without,
A cotter bracket for attaching a cotter having an H-shaped section for joining the precast plates to each other at four intervals around the precast plate is arranged vertically, and the cotter is attached to the connecting flange of the cotter. A bolt hole for inserting a bolt to be fixed to the cotter bracket is opened, a bolt is inserted into the bolt hole from the upper surface, and screwed into a screw portion at the bottom of the cotter bracket, and further, the precast plate A groove for increasing slip resistance is formed on the upper surface of the precast plate by a striped steel plate disposed on the bottom surface of the mold for manufacturing the seal, and a hexagonal seal groove in cross-section is provided between the side surfaces of the precast plate. A modified silicone system for forming groove recesses in the four peripheral sides of the precast plate so as to form water and preventing water from entering the seal groove due to a pumping phenomenon A high-strength reinforced concrete precast plate characterized by sticking a sealing material of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007126831A JP4093427B2 (en) | 2007-05-11 | 2007-05-11 | High-strength reinforced concrete precast plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007126831A JP4093427B2 (en) | 2007-05-11 | 2007-05-11 | High-strength reinforced concrete precast plate |
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| JP33349999A Division JP4010388B2 (en) | 1999-11-24 | 1999-11-24 | High-strength reinforced concrete precast plate |
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| JP2007291851A JP2007291851A (en) | 2007-11-08 |
| JP4093427B2 true JP4093427B2 (en) | 2008-06-04 |
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| JP7034229B2 (en) * | 2020-10-09 | 2022-03-11 | オリエンタル白石株式会社 | How to build a connected structure of precast structural member and cast-in-place cured material of repaired part of cross-section repair |
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