- 摘 要
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(蘭州城投房地產(chǎn)開發(fā)有限公司，蘭州 730000)
［摘要］通過蘭州某交通樞紐項目旋挖鉆孔灌注樁靜載荷試驗與內(nèi)力測試，分析了該旋挖鉆孔灌注樁的荷載傳遞機理和承載特性。研究表明，樁頂荷載的大部分由樁側(cè)阻力承擔(dān)，樁端阻力只承擔(dān)豎向荷載的一小部分；樁側(cè)阻力優(yōu)先于樁端阻力發(fā)揮；荷載沉降（Q-S）曲線呈緩變型；該試驗樁的豎向承載力明顯高于一般鉆孔灌注樁。
［關(guān)鍵詞］旋挖鉆孔灌注樁；荷載傳遞；豎向極限承載力
中圖分類號：TU473.1文獻標識碼：A文章編號：1002-848X(2011)03-0092-03
Experimental research on vertical load bearing behavior of churning
driven cast-in-place piles in Lanzhou
Qiu Yingyu
(Lanzhou Metropolitan Real Estate Development Co., Ltd., Lanzhou 730000, China)
Abstract:Based on the results of static loading test and stress test for the churning driven cast-in-place pile in a transportation hub project in Lanzhou, the load transferring mechanism and vertical load bearing behavior of the piles were analyzed. The analysis results show that the vertical load is mainly beared by shaft resistance, and a little part of it is beared by tip resistance. The shaft resistance works more preferentially than the tip resistance, and the Q-s curve is slow side form. The ultimate vertical load bearing capacity in this test is obviously bigger than that in average case.
Keywords:churning driven cast-in-place pile; load transferring; ultimate vertical load bearing capacity
作者簡介：邱英玉，高級工程師，一級注冊結(jié)構(gòu)工程師，注冊監(jiān)理工程師，Email：lifuqin1@126.com。
參考文獻
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