某连续刚构箱梁桥0号块腹板锚下开裂原因分析

Analysis of Cracking Under Anchor at Web of Segment No.0 of a Continuous Rigid-Frame Box Girder Bridge

某连续刚构箱梁桥0号块施工中腹板出现锚下开裂,从设计与施工两方面分析其开裂原因,并提出改善设计的具体建议和裂缝的处理意见。后续实践证明,通过计算进行适当的配筋设计改进和施工过程质量控制是成功的。

The problem of cracking under anchor at the web of Segment No. 0 of a continuous rigid-frame box girder bridge occurred in the construction. The causes leading to the cracking are analyzed from both aspects of design and construction and specific proposals to improve the design and to handle the cracking are made. The follow-up construction implementation of the bridge proves that the design improvement by proper layout of reinforcement through calculation and strict quality control in the construction are successful.