城市桥梁常常需跨越既有道路,新建桥梁布跨常受到管线、桥下道路、现状构筑物等影响,可能出现受力不合理的跨径布置。本文分析了混合梁受力特点,通过实际马家堡工程并结合城市桥梁特点,提出了混合梁在跨越既有道路及非常规边中跨比桥梁中的适用性和优越性。 Urban bridges often need to cross existing roads. The newly constructed bridges are often affected by pipelines, roads under the bridge, and structures under status quo. As a result, unreasonable straddling arrangements may occur. In this paper, the force characteristics of hybrid beams are analyzed. Based on the actual Majiabao project and the characteristics of urban bridges, the applicability and superiority of hybrid beams in existing roads and unconventional side span bridges are put forward.