摘要
公路工程中大跨径拱桥的设计多采用斜桩基础来传导分散拱圈所承担的荷载。工程施工中斜桩一般采用人工挖孔桩施工工艺。斜桩施工的安全质量控制的难度与当地地质水文情况、斜桩倾斜度及桩长息息相关。对斜桩传统施工方法中,在开挖支护、钢筋笼安装、模板吊装、混凝土浇筑和测量监控等方面存在的不足,进行了分析,对部分施工工艺进行了创新和改进,取得了较好效果;同时,对施工中遇到的斜桩塌孔现象,采取优化技术处理措施,成功地排除了施工难题,保证了工程安全顺利实施。
In the construction of arch bridge in highway engineering, the inclined pile foundation is mostly used to disperse the stress direction of the arch ring. In the process of digging holes with small radius oblique piles, with the increase of the depth and inclined piles, the excavation and construction of the technical requirements affect the overall quality of pile foundation, while monitoring methods and inclined pile in the case of sudden changes in geological conditions, to better deal with landslides, to ensure the quality and safety of the case, the protection of progress, the paper elaborate Excavation and support of inclined pile during excavation, the decentralization of reinforced cage, lifting and installation of forrnwork, measurement and monitoring methods, and optimization measures of inclined hole collapse.
出处
《建筑技术开发》
2018年第6期62-63,共2页
Building Technology Development
关键词
斜桩
塌孔
拱桥
batter pile
hole collapse ~ arch bridge
