- 摘 要
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岳歡歡1，霍凱成2
(1 武漢理工大學(xué)華夏學(xué)院，武漢 430070； 2 武漢理工大設(shè)計研究院， 武漢 430070)
［摘要］結(jié)合寧波某港口大橋大直徑鋼管樁抗拔靜載荷試驗，對試樁的荷載-位移曲線、位移-時間曲線、樁身軸力及單位側(cè)摩阻力分布曲線進(jìn)行了分析，揭示了鋼管樁的抗拔受力機(jī)理。分析表明抗拔樁為純摩擦樁。針對在試驗中未能確定抗拔極限承載力的情況，采用MATLAB軟件中的雙曲線模型擬合實測荷載-位移曲線,預(yù)測試樁的抗拔極限承載力,對該地區(qū)樁基的鋼管樁抗拔設(shè)計有一定的指導(dǎo)意義。
［關(guān)鍵詞］大直徑鋼管樁； 抗拔靜載荷試驗； 荷載-位移曲線； 側(cè)摩阻力； 極限承載力
中圖分類號： TU473 文獻(xiàn)標(biāo)識碼： A 文章編號： 1002-848X(2015)S2-0225-03
Study on uplift static load test of large-diameter steel pipe pile
Yue Huanhuan1, Huo Kaicheng2
(1 Huaxia College，Wuhan University of Technology， Wuhan 430070, China;
2 The Design & Research Institute of Wuhan University of Technology, Wuhan 430070, China)
Abstract: Combined with the uplift static load test of large-diameter steel pipe pile in the Port bridge of Ningbo, the load-displacement curve, displacement-time curve, axial force distribution curve and unit shaft resistance were analyzed, which revealing the uplift characteristic of the steel pipe pile. The analyses show that the uplift steel pipe pile is pure friction pile. Moreover, the hyperbolic model in MATLAB software was used to fit the measured load-displacement curve, predict ultimate bearing capacity of the test pile, which has some guiding significance to the design of steel uplift pile in the region.
Keywords: large-diameter steel pipe pile; uplift static load test; load-displacement curve; shaft resistance； ultimate bearing capacity
作者簡介：岳歡歡，碩士研究生,Email：63975871@qq.com。
