リニューアル(7)

[VI-732] A full-scale model bridge test on horizontal cutting method of hunched section of composite deck slab and recombining method after cutting

〇Shunji AOKI¹, Narimichi Oba¹, Soichiro Ando², Kota Fujio³, Akio Shirozu², Akihiro Yamaura², Kota Jyotatsu¹, Narimasa Kanda¹ (1.Obayashi corporation, 2.Yokogawa Bridge Corporation, 3.Concrete Coring Company)

Keywords:deck slab replacement, hunches cutting, composite deck slab, stud, recombining method

We have developed a dry horizontal cutting machine that cuts the deck slab haunches, including the stud, before removing the deck slab. After cutting, the stress generated in the main girder may exceed the limit value, so we are developing the recombining method of the girder and the deck slab. In this paper, we report the verification results of the recombining method effect by using a jig that can maintain the composite deck slab even after the horizontal cutting and the non-slip cutting of the haunch part by this machine using a full-scale model bridge.