Concrete slab and concrete slab formation method

(10) JP2021067099A

(22) 24.01.2019

(43) 30.04.2019

(57) 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.

(71) SumitomoMitsui conctruction Co. Ltd; Sumitomo Electric Industries (JP)