鄂黄长江大桥主桥施工阶段横向应力研究

Study of Transverse Stress of Main Beam of Ehuang Highway Bridge over Yangtze River in Construction Process

通过模拟鄂黄长江公路大桥主桥梁段悬浇施工过程 ,建立梁段有限元各阶段应力分析模型 ,探讨不同施工阶段梁段横向应力增长规律 ,并将几种横梁预应力筋施工方案作分析比较 。

The finite element model which analyzes the stress of beam section in each construction step is established through stimulating the construction process of Ehuang Highway Bridge over Yangtze River. The transverse stress increasing regulation of beam section in different stage is discussed, and some possible strain methods of prestressing steel wires in crossing beam are analyzed and compared with each other, then the rational sequence of straining prestressing steel wires is brought forward.