預測抗浮樁抗拔承載力數(shù)學模型研究
發(fā)布時間:2018-03-18 01:33
本文選題:抗浮樁 切入點:單樁極限抗拔承載力 出處:《施工技術》2016年S2期 論文類型:期刊論文
【摘要】:抗浮樁由于穩(wěn)定性高、施工簡易、適用范圍廣而被廣泛運用于解決地下工程抗浮問題,但現(xiàn)階段暫無有關抗浮樁單樁極限抗拔承載力的理論計算公式。基于廣州某超算中心地下室工程抗浮樁的現(xiàn)場靜載試驗,運用Origin數(shù)據(jù)分析軟件,對預測抗浮樁的極限抗拔承載力的數(shù)學函數(shù)模型進行討論。擬合結果表明:數(shù)學函數(shù)模型外推法能較為準確地對抗浮樁單樁極限抗拔承載力進行預測,回歸擬合的常用3種數(shù)學函數(shù)模型對單樁Q-s曲線擬合精度均較高,指數(shù)函數(shù)模型在預測極限抗拔承載力更接近實際值,能夠為實際工程設計提供依據(jù),為類似工程提供可靠參考。
[Abstract]:Because of its high stability, simple construction and wide application, anti-floating pile is widely used to solve the problem of anti-floating in underground engineering. However, at present, there is no theoretical formula for calculating the ultimate uplift bearing capacity of a single pile. Based on the site static load test of the anti-floating pile in a basement project of an overcalculation center in Guangzhou, the Origin data analysis software is used. The mathematical function model for predicting ultimate uplift bearing capacity of floating pile is discussed. The fitting results show that the extrapolation of mathematical function model can accurately predict the ultimate uplift bearing capacity of single pile. The three commonly used mathematical function models of regression fitting have higher fitting accuracy for Q-s curve of single pile, and the exponential function model is closer to the actual value in predicting ultimate uplift bearing capacity, which can provide the basis for practical engineering design. It provides reliable reference for similar projects.
【作者單位】: 廣州市盛通建設工程質(zhì)量檢測有限公司;暨南大學信息技術研究所;
【分類號】:TU473.1
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