摘要
以济微高速JWSG-4标岩溶施工项目为研究对象,分析了旋挖钻孔灌注桩施工技术及优化方案,并使用静荷载试验测试桩体性能。研究结果显示,直桩试验桩与工程桩的平均回弹率分别为22.7%与26.9%,并且随着桩顶施加荷载的增长,Y1与Y2分担桩顶荷载也在不断增长,占比分别为6.3%~25.3%,6.3%~22.0%。
Taking the karst construction project of the JWSG-4section of the Jinan-Weishan Expressway as the research object,the construction technology and optimization scheme of rotary drilled grouting piles are analyzed,and the performance of the pile body is tested by static load tests.The results indicate that the average rebound rate of the test pile and the engineering pile of the straight piles is 22.7%and 26.9%,respectively.With the increase in the pile top load,the load on the top of the pile shared by Y1 and Y2 is also increasing,accounting for 6.3%~25.3%and 6.3%~22.0%,respectively.
作者
何艳龙
赵付强
许晓轩
HE Yanlong;ZHAO Fuqiang;XU Xiaoxuan(Road&Bridge International Co.,Ltd.,Beijing 100027,China;Road and Bridge North Engineering Co.,Ltd.,Beijing 101100,China)
出处
《施工技术(中英文)》
2025年第7期102-105,共4页
Construction Technology
基金
中交路桥建设有限公司科研课题:厚砂层、岩溶发育地质桥梁桩基施工技术研究(ZJLJ-2024-86)。
