曲线索辅双层桁架梁桥的设计与施工

Design&Construction of Curved Cable Auxiliary Double Deck Truss Beam Bridge

城市桥梁的建设,经常受到净空和线形的限制,需要设计低高度梁和曲线梁。西南某城市建设了一座小半径双层桁架梁桥,采用拱肋提供吊索支承,改善主梁受力。介绍桥的曲线桁架双层梁设计、梁和拱的施工工艺,分析桥梁的受力性能,以期为类似项目提供借鉴。

The construction of urban bridges is often limited by clearance&alignment,so it is necessary to design low height beams&curved beams.A small radius double-layer truss beam bridge is built in a city in Southwest China.The arch rib is used to provide sling support to improve the stress of the main beam.It introduces the design of curved truss double-layer beam,the construction technology of beam&arch,and analyzes the mechanical performance of the bridge to provide references for similar projects.