摘要
通过对埋置有元件的灌注桩的现场试验,来研究福州及周边地区钻孔灌注桩桩端注浆后单桩的承载特性以及荷载传递特性.结果显示桩端后压力注浆技术可以有效提高本地区钻孔灌注桩承载力,提高幅度从26.7%到56.9%不等,实际工程中个别单桩极限承载力增幅甚至达到了155%.通过本文的研究,提出了该地区桩端后压力注浆的灌注桩单桩极限承载力确定方法.
Based on an engineering example, this paper analyses and studies the bearing characteristics as well as the load transfer behavior of tip - grouting bored pile in Fuzhou and nearby district. The results show that the post- grouting technology can enhance the bearing capacity of bored piles in this district, with a range from 26. 7% to 56.9% , and even 155% in some case. The determination method of bearing capacity of tip - grouting bored pile in this district is also proposed in this paper.
出处
《昆明理工大学学报（理工版）》
CAS
北大核心
2009年第3期48-52,共5页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(项目号:50878155/E080602)
关键词
灌注桩
桩端注浆
试验研究
承载特性
荷载传递特性
bored pile
tip grouting
experimental study
bearing behavior
load transfer behavior
