摘要
以厦门同集路提升改造工程中天马下穿通道基坑工程为研究背景,结合项目水文地质情况,对基坑防护施工技术进行了深入研究,基于基坑排桩加支撑的防护方案,分别从冲孔灌注桩、高压旋喷止水帷幕桩、压顶冠梁、钢管横撑和基坑开挖等方面详细阐述了下穿通道基坑防护结构的施工要点,通过施工过程的变形监测数据分析了防护方案的可行性。
Taking the foundation pit engineering of Tianma underpass in Xiamen Tongji Road upgrading and reconstruction project as the research background,combined with the project of hydrological geology,construction technology for foundation pit protection were studied.Based on the protection scheme of row piles and supports of foundation pit,the construction key points of protection structure of underpass channel foundation pit are elaborated from the aspects of punching cast-in-place pile,high-pressure jet grouting curtain pile,coping crown beam,steel pipe cross bracing and foundation pit excavation.The feasibility of the protection scheme is analyzed through the deformation monitoring data in the construction process.
作者
徐本龙
Xu Benlong(Hecheng Engineering Consulting Group Co.,Ltd.,Xiamen 361000 Fujian)
出处
《住宅产业》
2020年第12期100-102,共3页
Housing Industry
关键词
下穿通道
基坑防护
止水帷幕
施工要点
开挖
监测
underpass channel
foundation pit protection
watertight curtain
key points of construction
excavation
monitoring
