摘要
针对静载荷试验无法得到大直径桩基极限承载力的问题 ,分析了桩在静载荷作用下的工作性状及 2 0余根大直径人工挖孔桩的静载荷试验资料 .指出了现有几种荷载、时间、沉降关系曲线的局限性 ,提出了对大直径挖孔桩荷载—沉降曲线按双曲线拟合的逆斜率法 .结果表明 :逆斜率法能较好地预测单桩极限承载力 .同时 。
According to the difficulty of the ult imate bearing capacity of large diameter dig?hole pile that can't be obtained by staic load test,this paper analyzes the working character istics of pile under static load and test materials with more than 20 pieces of la rge diameter dig?hole piles and points out the limitations of several curves am ong load,time and displacement curve on hyperbola.The result indicates that th e inverse gradient method can forcast the ultimate bearing capacity of single pi le well.The paper also puts forward some suggestions for defining bearing capac ity by engineering piles.
出处
《焦作工学院学报》
2002年第4期308-311,共4页
Journal of Jiaozuo Institute of Technology(Natural Science)
关键词
大直径挖孔桩
静载荷试验
承载力
large diameter dig-hole piles
statical load tests
ultimate bearing capacity
