Repair & Strengthening (material) Ⅱ

[1314] IMPROVING INSUFFICIENT INSERTION LENGTH MECHANICAL SPLICES IN RC STRUCTURES

Dac Phuong NGUYEN¹, Hiroshi MUTSUYOSHI², Erina MAEDA¹ (1.Saitama University 2.埼玉大学)

Keywords:cyclic loading, mechanical splices, reinforced concrete, staggering length, メカニカルスプライス, 繰り返し荷重, 鉄筋コンクリート, 驚異的な長さは

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Mechanical splices are sometimes installed incorrectly in a construction site when the centers of two steel bars are deviated. As a result, the steel bars are not embedded sufficiently in a coupler. RC structures using such mechanical splices cannot achieve properties as expected. This paper develops a new recovery splice for improving such mechanical splices. The RC beams using the recovery splices showed the same load carrying capacity and crack width as the control beam without mechanical splices.