椒江二桥桥面板混凝土裂缝原因及预防措施分析

Causes and Preventive Measures Analysis of Concrete Cracks in Bridge Panels of Jiaojiang No.2 Bridge

结合椒江二桥桥面板工程,分析实际道桥施工工程中混凝土裂缝的类型和成因,通过技术分析提出了桥面板混凝土裂缝预防措施,如减小桥面板混凝土收缩徐变,在后浇缝混凝土以及桥面板施加预压力,分次张拉斜拉索逐步逼近成桥线形及索力等。

Based on the bridge panel project of JiaojiangNo.2 Bridge,paper analyzes the types and causes of concrete cracks in practical road and bridge construction engineering,after the technical analysis,proposes the cracks prevention measures of bridge concrete,such as reducing the shrinkage and creep of bridge concrete,applying pre-pressure to the post-cast joint concrete and bridge panel,and gradually approaching the bridge line shape and cable force of themulti-tensioning cable.