PRECAST FLOOR SLAB AND CONNECTING STRUCTURE WITH MAIN GIRDER

PROBLEM TO BE SOLVED: To provide a precast floor slab and a connection structure with a main girder that make a dowel steel material compact at the same time enhancing durability and rigidity, and help to secure a durability balance between the floor slab and the connection.SOLUTION: A connection structure is between a precast floor slab made of ultra high-strength fiber-reinforced concrete and a main girder, and includes a dowel made of a section steel and installed on a top surface of the main girder, and an opening on the floor slab made by cutting through along an outer shape of the dowel. The dowel is inserted into the opening, and mortar or other filler material is filled in a gap between the dowel and the opening. An H-shaped steel, an I-shaped steel or a channel steel may be used as the dowel. 【課題】ジベル鋼材自体をコンパクトにしつつ、且つ耐力と剛性を上げることが可能で、床版と接合部の耐力バランスを確保に寄与する、プレキャスト床版と、主桁との接合構造を提供する。【解決手段】超高強度繊維補強コンクリートで製作したプレキャスト床版と、主桁との接合構造であって、前記主桁の上面に設けた、形鋼からなる、ジベルと、前記床版に設け、前記ジベルの外形に沿って箱抜きした、開口部と、をからなり、前記開口部に前記ジベルを挿入して、該ジベルと開口部との隙間にモルタルなどの充填材を充填する。前記ジベルには、Ｈ形鋼、Ｉ形鋼、又は溝形鋼を用いることができる。【選択図】図１