夯擴(kuò)樁的設(shè)計及工程應(yīng)用體會
謝 松
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謝 松 （馬鞍山市建筑設(shè)計研究院 243000）
[提要] 介紹了錘擊沉管夯擴(kuò)樁的沉管控制原則。通過理論分析及工程實(shí)例，比較分析了單樁極限承載力的計算值與靜載試驗(yàn)值，提出對《建筑樁基技術(shù)規(guī)范》(JGJ94-94)第6.4.13條樁端擴(kuò)大頭算式的調(diào)整建議。
[關(guān)鍵詞] 夯擴(kuò)樁 單樁極限承載力 靜載試驗(yàn) 擴(kuò)大頭形狀系數(shù)This paper expatiates the method how to control the driven steel tube in application of the rammed pedestal pile. Combining theory with practice,the results of calculation and load test of the ultimate bearing capacity of single pile are compared.The viewpoint on adjusting the formula of the 6.4.13 item of Technical Code for Building Pile Foundations (JGJ94-94) is presented.
Keywords: rammed pedestal pile; ultimate bearing capacity; load test; shape factor
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