摘要
在硬塑性黏土区采用预应力管桩,容易造成管桩上浮现象,应慎重选择预应力管桩;针对预应力管桩上浮问题,可采用复压、桩端压密注浆、桩间补打柔性桩复合地基、补钻孔灌注桩等措施处理。文章结合工程实例,采用钻孔灌注桩补桩处理预应力管桩上浮现象,解决浮桩造成的预应力管桩承载力不足问题,并有效地控制了两种桩型的沉降差。
The use of prestressed concrete pipe pipe in hard plastic clay area is easy to cause the phenomenon of pipe floating up,so the prestressed concrete pipe pipe should be selected carefully,it can be treated by such measures as re-pressing,pressure grouting at the end of piles,supplementary driving of flexible pile composite foundation between piles and supplementary bored pile,etc.,the problem of insufficient bearing capacity of prestressed concrete pipe pipe caused by floating pile is solved,and the settlement difference between two pile types is effectively controlled.
作者
章钊
魏大平
李刚
袁书强
ZHANG Zhao;WEI Da-ping;LI Gang;YUAN Shu-qiang(Nanjing Yangtze River Urban Architectural Design Co.,Ltd,Nanjing Jiangsu 210000 China)
出处
《江苏建筑》
2022年第4期89-92,共4页
Jiangsu Construction
关键词
硬塑性黏土
预应力管桩
浮桩
钻孔灌注桩
补桩
rigid plastic clay
prestressed concrete pipe pile
floating pile
bored pile
add pile
