Steel roof truss and reinforced concrete column joint reinforcing method in existing building: Fid-Bau Portal

Steel roof truss and reinforced concrete column joint reinforcing method in existing building

JIN GAOMING / ZHANG XIANG / ZHANG HAIGANG / ZHANG YINGXIANG / LIU XIAORUI / CAO KAI / LUO JIAYING

The invention discloses a method for reinforcing joints of a steel roof truss and a reinforced concrete column in an existing building, which is applied to the technical field of reinforcement of the existing building. By arranging a second protection mechanism and a roof truss protection mechanism, the reinforcing method mainly adopts a second steel plate protection sleeve 501 and surrounds a reinforced concrete side column body; a through roof truss steel anchor rod is adopted to be connected with the reinforced concrete side column body to form closed connection, meanwhile, sticky steel glue is poured between the second steel plate protection sleeve 501 and the reinforced concrete side column body, and the bonding performance of the second steel plate protection sleeve 501 and the reinforced concrete side column body is improved; the chemical bolts penetrate through the second steel plate protective sleeves 501 to reinforce and penetrate through the side face of the reinforced concrete side column body, force can be transferred to the reinforced concrete side column body from the steel roof truss body, the energy dissipation capacity of the structure is improved, and the rigidity and strength of the joint are improved.

本发明公开了一种既有建筑中钢屋架与钢筋混凝土柱节点加固方法，应用于既有建筑物加固技术领域，本发明通过设置第二防护机构和屋架防护机构，加固方法主要是采取第二钢板防护套501和包围钢筋混凝土边柱本体，并采取贯通屋架钢锚杆与钢筋混凝边柱本体连接，形成一个闭合的连接，同时在第二钢板防护套501加与钢筋混凝土边柱本体之间灌注粘钢胶，增加第二钢板防护套501与钢筋混凝土边柱本体的黏结性能，化学螺栓贯穿第二钢板防护套501加固贯穿了钢筋混凝土边柱本体的侧面，可以将力从钢屋架本体转移到钢筋混凝土边柱本体，提高结构的耗能能力，增加了节点的刚度与强度。

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