大跨径连续梁桥小半径曲线边跨优化设计

受地形及水文环境限制，乌龙江大桥（新建复线桥）通航孔主线桥工可阶段采用80m＋3144m＋86m的布跨方式。峡北侧边跨处于半径为70m的曲线上，平曲线半径小，结构受力复杂，设计及施工难度很大，此种梁式桥方案在国内外尚属首次，因此需对此方案进行研究分析，确定控制要素，在分析成果基础上确定最佳跨径配置及结构型式。

Optimal Design on Side Span with Small Radius Curve of Long-span Continuous Girder Bridge

Because of the environmental constraints from topography and hydrology,main line navigation span of Wulongjiang bridge (the new double-track bridge) using 80 m+3 144 m+86 m span-ways in project feasibility study stage. The north side of spans is in the curve radius of 70 m, and the force to so small radius of curve is very complicated. At the same time, the design and construction is very difficult, and such a beam-bridge program is the first time at home and abroad, are therefore required to carry out this...