中国勘察设计
中國勘察設計
중국감찰설계
CHINA INVESTIGATION & DESIGN
2011年
9期
64-67
,共4页
小截面%静压预制桩%极限承载力%预测%终止压桩力
小截麵%靜壓預製樁%極限承載力%預測%終止壓樁力
소절면%정압예제장%겁한승재력%예측%종지압장력
small cross-section%static-load preformed pile%ultimate bearing capacity%prediction%final pile static pressure
首先选择两种拟合模型对该小区3根静载试验已达极限承载力状态桩的试验曲线进行了拟合与预测误差分析,分析结果表明选择指数曲线预测模型更加符合该小区桩的承载力性状。然后采用指数曲线预测模型对该小区其它19根未达极限状态的试验和检测桩进行了拟合与预测,并建立了预测极限承载力、终止压力和桩长细比的关系公式,该极限承载力预测公式可以用于桩基施工时的承载力预测。
首先選擇兩種擬閤模型對該小區3根靜載試驗已達極限承載力狀態樁的試驗麯線進行瞭擬閤與預測誤差分析,分析結果錶明選擇指數麯線預測模型更加符閤該小區樁的承載力性狀。然後採用指數麯線預測模型對該小區其它19根未達極限狀態的試驗和檢測樁進行瞭擬閤與預測,併建立瞭預測極限承載力、終止壓力和樁長細比的關繫公式,該極限承載力預測公式可以用于樁基施工時的承載力預測。
수선선택량충의합모형대해소구3근정재시험이체겁한승재력상태장적시험곡선진행료의합여예측오차분석,분석결과표명선택지수곡선예측모형경가부합해소구장적승재력성상。연후채용지수곡선예측모형대해소구기타19근미체겁한상태적시험화검측장진행료의합여예측,병건립료예측겁한승재력、종지압력화장장세비적관계공식,해겁한승재력예측공식가이용우장기시공시적승재력예측。
The analysis on curve fittings and predicted results of three piles, which had reached the ultimate bearing capacity in static loading experiments, indicates small errors in predictions. The exponential curve fitting model can reflect the bearing capacity condition of the piles in this project. Fitting and predictions were carried out on other 19 experimental and testing piles, which did not reach the ultimate bearing capacity, in the same project. A function describing the ultimate bearing capacity, final pile static pressure and slenderness ratios was set up by analyzing their relations. This function can be utilized in the prediction of beating capacity during pile constructing.
