Structure for additionally arranging cantilever structure on existing reinforced concrete beam and construction method: Fid-Bau Portal

Structure for additionally arranging cantilever structure on existing reinforced concrete beam and construction method

FAN JUN / SONG LINLIN / LI DI / LIU PENG / ZHANG KUIJIE / ZHANG PENGSHENG / WANG MINGXUN / GUO GANG

The invention relates to a structure for additionally arranging a cantilever structure on an existing reinforced concrete beam and a construction method, and belongs to the technical field of civil construction, the structure comprises a floor, a steel support, a steel plate, an anchor bolt, a shear key, reinforced concrete brackets, a temporary support, a cantilever structure and a reinforced concrete beam, and the steel support is connected with the cantilever structure and the steel plate. The steel plate fixes the upper structure on the existing reinforced concrete beam through the anchor bolt and the shear key, one end of the anchor bolt and one end of the shear key are fixed on the steel plate, the other end of the anchor bolt and the other end of the shear key are anchored into the reinforced concrete brackets or the reinforced concrete beam, and the reinforced concrete brackets are located on the two sides of the reinforced concrete beam. And the temporary support is used for supporting the additionally arranged cantilever structure during construction. The structure is simple, convenient, feasible, economical and practical, and the anti-overturning requirement of the cantilever structure can be met.

本发明涉及一种在既有钢筋混凝土梁上加设悬挑结构的构造及施工方法,属于土木建筑技术领域，包括楼板、钢支座、钢板、锚栓、抗剪键、钢筋混凝土牛腿、临时支撑、悬挑结构、钢筋混凝土梁，钢支座连接悬挑结构和钢板，所述钢板通过锚栓及抗剪键以固定上部结构于既有钢筋混凝土梁上，所述锚栓和抗剪键一端固定在钢板上，另一端锚进钢筋混凝土牛腿或钢筋混凝土梁中，所述钢筋混凝土牛腿位于钢筋混凝土梁两侧，所述临时支撑用于施工期间支撑所加设悬挑结构。本发明结构简便易行，经济实用，可满足悬挑结构的抗倾覆要求。

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