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[提要]  通過(guò)試驗(yàn)和理論分析，以及對(duì)一些工程實(shí)例的比較，對(duì)擠擴(kuò)支盤(pán)樁的承載性能進(jìn)行了研究，證明其性能價(jià)格比遠(yuǎn)好于普通灌注樁，是一種技術(shù)經(jīng)濟(jì)效益十分顯著的樁型。同時(shí)，文中還提出了影響該樁型承載性能的因素，指出了目前承載力計(jì)算中存在的不足和有待進(jìn)一步改進(jìn)的地方。
[關(guān)鍵詞]  擠擴(kuò)支盤(pán)樁  承載性能  工程應(yīng)用  荷載試驗(yàn)

Through tests, theoretical analysis and the comparisons of some engineering examples, this paper focuses on the bearing property of cast-in-place pile with branches and plates, and demonstrates that it has better cost performance ratio than common cast-in-place pile. Accordingly, it has distinct benefits in technology and economy. It also points out the influential-factors in bearing property of this kind of pile, and mentions the disadvantages of calculation in bearing capacity and the aspects which should be improved.
Keywords: variable-diameter pile; bearing property; engineering application; loading test