摘要
在桩的抗拔课题中,极限抗拔承载力的确定是其重要内容。当抗拔试桩未加载至其破坏荷载时,根据已有的荷载位移数据,用函数模型外推法预测极限抗拔承载力具有理论意义和实践意义。以工程实例为基础,用G rap-her4的曲线拟合功能,选用双曲线模型、指数模型和幂函数模型,成功预测出了极限抗拔承载力。通过结果比较,表明指数函数模型具有较好的预测精度。
The determination of extreme limit of anti-lifting bearing capacity is an important content for pile＇s anti-lifting research. When the load of anti-lifting pile does not reach the disrupt load, the forecast of extreme limit of anti-lifting pile＇s bearing capacity by function model of extrapolation is significant in both theory and practice, according to the known loaddisplacement data. The extreme limit of anti-lifting bearing capacity was successfully forecasted out by hyperbola model, exponent .model and power function model, using the imitation functions of curves of Grapher 4 and taking project cases as a base. The comparison of the results of three function models shown that the exponent model has higher forecast precision.
出处
《探矿工程（岩土钻掘工程）》
2005年第9期12-14,共3页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
抗拔桩
极限承载力
函数模型
外推法
预测
anti-lifting pile
extreme limit of bearing capacity
function model
extrapolation
forecast
