关键词: 悬索桥, 施工控制, 偏心, 锚跨丝股, 张拉过程

Abstract: It is an important part for making sure the harmony ofthe stress state and configuration of structure to that of design．Diferent construction applies diferent method to adjust the eccentricity．As a new method of suspension dge construction，it is diferent from preeccentriciting main saddle，incremental launching main saddle in construction．Through analyzing the construction of lancangjiang bridge，the construction process，the contents and paramctem of costruction control arc introduced，and it is presented that according to the condition of construction control，the circulation condition of tensioning of anchor span strands should be make up so that make sure every component of structure is safe in construction and reach the design location in bridge completion stage．In the end，the tensioning process of anchor span strands divided into two groups will be simulated，and the conclusion will be drew that，with the increasing of the bundle of anchor span strands ，the frequency ofthe tensioning of anchor span strands will be rapidly raised．

Key words: suspension bridge, construction control, eccentricity, anchor span strands , tensioning stage