CONCRETE SLAB AND CONCRETE SLAB FORMATION METHOD

To provide a concrete slab and a concrete slab formation method with which replacement of only a small number of damaged precast slabs that require replacing is possible while maintaining the prestress acting on the remaining part of the concrete slabs.SOLUTION: A plurality of precast slabs 10 is ar...

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Main Authors ANDO NAOFUMI, MATSUBARA YOSHIYUKI, NAKAGAMI SHINJI, SHIMIZU KOICHIRO, NISHINO MOTOYASU, SAKINAKA MINORU, FUJIWARA YASUHISA, NISHIMURA KAZUHIRO
Format Patent
LanguageEnglish
Japanese
Published 30.04.2021
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Summary:To provide a concrete slab and a concrete slab formation method with which replacement of only a small number of damaged precast slabs that require replacing is possible while maintaining the prestress acting on the remaining part of the concrete slabs.SOLUTION: A plurality of precast slabs 10 is arranged on a bridge girder 1, and a plurality of precast slabs is joined by introducing prestress in the axial direction of the bridge girder. A tension material 12 penetrates the plurality of precast slabs in succession, and both ends are fixed in a state in which the tension force is introduced. Two fixing tools 14 are attached to the middle part of the continuous tension material at the joints of a prescribed number of precast slabs among the plurality of precast slabs. The two fixing tools are arranged so that fixing surfaces 14a capable of transmitting the tension force of the tension material to the precast slabs are directed in opposite directions with the surfaces behind the fixing surfaces facing each other.SELECTED DRAWING: Figure 2 【課題】コンクリート床版の残存させる部分に作用しているプレストレスを維持したまま、損傷が生じて取り替えが必要になった少数のプレキャスト版に限定して取り替えることができるコンクリート床版及びこのようなコンクリート床版の形成方法を提供する【解決手段】橋桁1の上に複数のプレキャスト版10が配列され、橋桁の軸線方向にプレストレスを導入して複数のプレキャスト版が接合されている。緊張材12は複数のプレキャスト版を連続して貫通し、緊張力が導入された状態で両端部が定着されている。複数のプレキャスト版の内の所定数のプレキャスト版毎の接合部に、2つの定着具14が連続する緊張材の中間部分に装着されており、これらの2つの定着具は、緊張材の緊張力をプレキャスト版に伝達することができる定着面14aを互いに反対方向に向け、定着面の背後の面が互いに対向するように配置されている。【選択図】図2
Bibliography:Application Number: JP20190193358