人工挖孔抗拨桩在多层地下室抗浮中的应用  

The application of manual hole digging uplift pile in multistory basement anti- floating design

作　　者：李求昆 

机构地区：[1]福建华景建筑设计院有限公司,福建厦门361004

出　　处：《福建建筑》2016年第5期64-67,共4页Fujian Architecture & Construction

摘　　要：对厦门华尔顿1275(和昌中心)项目的多层地下室进行人工挖孔抗拨桩的设计分析,选取地下室典型柱网进行各类抗拨设计的分析与比较,详细计算了人工挖孔桩的抗拨承载力。结果表明:采用桩身直径d=1.1m,扩底直径D=2.4m,桩长l=10.5m的人工挖孔桩可以达到单桩抗拨承载力Tk=2 200k N,能满足地下室抗浮要求。分析进一步表明,应用人工挖孔抗拨桩相比锚杆等其它抗拨方案具有单桩抗拨力大、造价低、施工简便、工期短等优点,可以减少项目的施工工期并获得良好的经济效益。To design and analyze the manual hole digging piles of multistory basement in the project Walton1275（ Hechang center） in Xiamen,uplift bearing capacity is calculated after the comparison of various pull- out designs in typical column grid. The result shows that the uplift bearing capacity of single pile reaches 2200 k N and meets the anti- floating requirements when pile diameter d = 1. 1m,belled diameter D = 2. 4 and pile length l = 10. 5m. It further suggests that manual hole digging pile is superior to anchor or other anti- pulling projects for greater resistance capacity,lower cost,and simpler construction. It reduces construction time and maximizes the economic benefit,as well as provides references to the anti- floating design of similar multistory basements.

关 键 词：多层地下室 人工挖孔桩 抗拨 裂缝控制 

分 类 号：TU4[建筑科学—土工工程]