自锚式悬索桥钢箱梁主梁的特点及顶推工艺

摘要

Analyzing features to facilitate the design and construction of self-anchored suspension bridge steel box girder, elaborating thrusting system, thrusting techniques and the program of beam down, since construction control of thrusting techniques is difficulty in self-anchored sus pension, focusing on analyzing the the need to control the main beam linear, saddle offset and the main beam stress these three basic contents during construction process, further improve the thrusting techniques.%对自锚式悬索桥钢箱梁主梁设计方便、施工快捷等特点进行了分析与总结，对主梁的顶推系统、顶推工艺、落梁方案进行了阐述，基于主梁顶推施工控制是自锚式悬索桥的重难点，重点分析了主梁顶推过程中需要控制的主梁线形、索鞍偏移和主梁应力三个基本内容，进一步完善了主梁顶推工艺。