高架桥圆曲线斜腹式箱梁施工技术

Construction Technology of Warren Box Girder with Circular Curve for Viaduct

郑州市京沙快速通道主线高架桥桥梁宽度、主梁高度变化均较大,异型结构较多,桥梁分叉前后的衔接处理较多,对此提出主线高架桥、匝道桥桥梁采用圆曲线斜腹式箱梁形式,并详细介绍了圆曲线斜腹式箱梁支架与模板设计、施工工艺,实际的施工效果证明该形式能适应桥梁宽度变化及桥梁间的衔接处理。

The changes of the width and girder height of the main viaduct for Jingsha Rapid Track in Zhengzhou is very great,which has many special-shaped structures,there are many connections pre and post the viaduct bisects. This paper puts forward warren box girder scheme with circular curve for viaduct and ramp bridge,introduces the bracket and formwork design,construction technology of warren box girder with circular curve. The engineering practice shows that the warren box girder scheme with circular curve can adapt to the width change of the viaduct and the connections among viaducts.