摘要
在某210m高烟囱的桩基加固工程中,采用钻孔灌注桩部分托换原有桩基的方法。介绍施工场地准备、定位、开凿桩孔、钻孔灌注桩施工、后压浆施工以及桩基检测和底板桩孔恢复的施工特点和难点。通过采取有效的质量保障措施,使烟囱桩基得到加固,从而保证上部结构的继续施工。研究结果表明该加固方法切实有效。经过定期的沉降观测,烟囱沉降均匀,符合设计规范要求。
In the foundation reinforcement of a chimney engineering with height of 210m, original pile foundations are partly underpinned with bored piles. The characteristics and difficulties are introduced during the process of construction, such as construction preparation, location, pile excavation, bored piles construction, post grouting construction, as well as foundation testing and piles recovery of bottom floor. The chimney piles are strengthened by adopting effective quality measures, which can ensure the continue construction of upper structure. The results show that the method is suitable for this engineering. After regular surveying, the pile settlements are uniform. It can meet the requirements of design cedes.
出处
《施工技术》
CAS
北大核心
2009年第3期97-100,共4页
Construction Technology
关键词
烟囱
基础工程
加固
灌注桩
chimney
foundation
reinforcement
bored pile
