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(1 貴陽金陽新區(qū)開發(fā)建設(shè)有限公司，貴陽 550001；2 貴州省建筑科學(xué)研究檢測中心，貴陽 550006)

［摘要］運(yùn)用自平衡試樁法對貴陽奧體中心主體育場工程32根樁基進(jìn)行檢測，解決了工期短、場地緊張、荷載大的基樁檢測難題。試驗(yàn)結(jié)果表明，達(dá)到設(shè)計(jì)荷載時(shí)樁基的位移值均較小，最大位移僅為6.01mm，基樁基本處于彈性變形階段，遠(yuǎn)小于《建筑基樁檢測技術(shù)規(guī)范》(JGJ106—2003)中的破壞狀態(tài)限值。側(cè)摩阻力值還處于線性增長階段，且數(shù)值十分可觀，據(jù)此有望解決貴州省目前樁基承載力側(cè)摩阻力不能充分利用的問題。

［關(guān)鍵詞］自平衡法；貴陽奧體中心；側(cè)摩阻力；樁基

Pile testing of Guiyang Olympic Sports Center based on self-balanced method

Zhang Zhong1, Ji Yongxin2, Zhou Shunhao1

(1 Guiyang Jinyang Construction Investment Co., Ltd., Guiyang 550001, China;

2 Inspection Center of Construction Science Research of Guizhou Province, Guiyang 550006, China)

Abstract:The self-balanced loading test was conducted to test 32 piles of the main stadium in Guiyang Olmypic Sports Center. The problems of the short construction period, not enough site and healy load were solved. The results show that the displacement values of piles are always small, the maximum displacement is only 6.01mm when reached the pile design load，and the pile is basical in elastic deformation stage，which is far less than the destruction of the state limits in Building foundation inspection technical specification(JGJ106—2003). The shaft friction value is still in the linear growth phase. The self-balanced method may resolve the problem that the shaft friction is not ful used in Guizhou Province.

Keywords:self-balanced method; Guiyang Olympic Sports Center; shaft friction; pile

貴州省科技廳工業(yè)攻關(guān)項(xiàng)目(［2010］3002),貴陽市科技商業(yè)攻關(guān)項(xiàng)目［2010］。

作者簡介：張忠，高級工程師，Email:zhang_1969@163.com。

參考文獻(xiàn)

［1］程曄,龔維明,薛國亞.南京長江第三大橋軟巖樁基承載性能試驗(yàn)研究［J］.土木工程學(xué)報(bào)，2005，38(12)：94-98，114.

［2］張帆,龔維明,戴國亮.大直徑超長灌注樁荷載傳遞機(jī)理的自平衡試驗(yàn)研究［J］.巖土工程學(xué)報(bào)，2006，28(4)：464-469.

［3］戴國亮,龔維明,程曄，等.自平衡測試技術(shù)及樁端后壓漿工藝在大直徑超長樁的應(yīng)用［J］.巖土工程學(xué)報(bào)，2005，27(6)：690-694.