中朝鸭绿江界河公路大桥主桥施工阶段塔梁临时固结构造计算与设计

中朝鸭绿江界河公路大桥主桥为主跨636m的双塔双索面钢箱梁斜拉桥,边跨设置辅助墩,其跨径布置为86 ＋229 ＋636 ＋229 ＋86=1266m.本桥结构采用半飘浮体系,索塔与主梁间设置竖向支座和横向抗风支座,纵向设置粘滞阻尼器;过渡墩设置竖向拉压支座和横向抗风支座;辅助墩设置竖向拉压支座,钢箱梁内同时设置压重.主要介绍该桥施工阶段塔梁临时固结计算和设计.

Calculation and Design of Temporary Fixed Construction between Tower and Girder in Construction Phase of the Main Bridge of Highway Bridge for the Yalu River the Boundary River Between China and North Korean

the main bridge of China - DPRK boundary river Yalu Bridge is a two - tower cable - stayed bridge steel box beam with a main span of 636m towers and setting the side spans auxiliary piers. Its span arrangement is 86 ＋229 ＋636 ＋ 229 ＋ 86 = 1266m. The bridge structure uses semi- floating system. Vertical bearing, transverse windproof supports, longitudinal viscous dampers are arranged between the main beam and the bridge tower ; vertical tension and compression supports and transverse windproof supports are set under the transition pier; auxiliary piers are set with vertical tension and compression supports and steel box girders are set with heavy pressure. This paper mainly introduces the calculation and design of temporary fixed construction between tower and girder for this bridge.