斜拉桁架式悬臂施工法是国外大跨度拱桥常用的无支架施工方法之一,但在国内运用非常少。由于受多种施工因素控制的影响,原以承压为主的拱圈在施工中承受较大的弯矩,其结构性能较为复杂,着眼于施工进程研究了上承式拱桥的结构性能,讨论了临时拉索、结构体系、合龙措施等多种施工控制因素对拱圈受力性能的影响。 Cable-stayed truss-type cantilever construction method is one of the commonly used unsupported construction methods for long-span arch bridges abroad, but it is rarely used domestically. Due to the influence of many construction factors, the arch ring, which is mainly pressure-bearing, is subject to a large bending moment during construction. Its structural performance is rather complicated. The structural performance of the through-going arch bridge is studied in view of the construction process. The influence of construction control factors such as temporary cable, structural system and closing measures on the stress performance of arch ring.