悬臂施工混凝土裂缝控制工法

Construction Control Method of Concrete Cracks in Cantilever Construction

预应力混凝土连续梁桥、刚构桥是采用较多的桥梁形式。预应力混凝土连续梁桥、连续刚构桥一般跨度大而且跨江河、河谷,所以银川兵沟黄河大桥主要采用悬臂浇筑法施工。介绍了工法特点及工艺原理,并对施工技术进行详细分析,提出了"抗""散""养"3种思路,并对施工组织设计进行介绍。经分析,该工法对于悬臂施工混凝土裂缝控制具有较好的实际效果。

Prestressed concrete continuous girder bridges and rigid frame bridges are widely used. Prestressed concrete continuous girder bridge and continuous rigid frame bridge generally have a long span and span rivers and river valleys. This paper introduces the characteristics and process principle of the construction method. Three ideas of "resistance","dispersion" and "maintenance" are put forward,and the construction organization design is introduced. and analyzes the construction technology in detail.