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曲线钢混组合梁桥施工阶段翘曲应力与横隔板间距的研究

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摘要 钢梁为典型薄壁构件,容易产生较大的畸变效应,需要设置一定间距的横隔板以提高抗扭刚度控制其畸变变形。对于常用的曲线槽型钢混组合梁桥,由于受梁体本身曲率影响,会产生弯剪扭共同作用;若采用无支架现浇施工,施工阶段桥面荷载全部由开口槽型钢梁承担,容易发生翘曲变形及弯扭屈曲失稳,成为组合梁设计的控制因素。因此需要采用足够的数量的横隔板来防止施工阶段及运营阶段弯扭屈曲、降低箱体畸变,保证结构安全。本文主要研究曲线槽型钢混组合梁桥施工阶段翘曲应力大小及横隔板间距对翘曲效应的影响。
作者 侯帆
出处 《建材与装饰》 2020年第6期255-256,共2页 Construction Materials & Decoration
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