橋梁床版(2)

[I-372] Experimental Study on Improving Workability of Precast Slab Joint

〇Kazushi Takimoto¹, Hirokazu Tanaka¹, Xiaoxu Zhu¹, Nobuhito Okubo², Masashi Yamamoto², Hiroshi Higashiyama³ (1.SHIMIZU CORPORATION, 2.FaB-Tec Japan Corporation, 3.KINDAI UNIVERSITY)

Keywords:slab replacement, precast slab, mechanical anchor, lightweight aggregate concrete

With replacement work increasing for aging bridge slabs, the demand for shortening the period of traffic suspension has risen. Nowadays, precast slab becomes popular because of its construction time saving. The joints for precast slab should meet the needs for both enough strength and less construction time. In this research, the joint design, which uses T-headed rebars with mechanical anchors instead of normal rebars and the lap joint with 5times length of the rebar diameter is proposed. By conducting bending test, it is shown that the proposed joint has enough strength and good performance.