- 摘 要
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(1 同濟(jì)大學(xué)地下建筑與工程系 上海 200092； 2 寶山鋼鐵股份有限公司 上海 201900)
【提要】 對四根軟土地基中超長PHC樁進(jìn)行抗拔和抗壓載荷試驗，分析軟土地基中超長PHC樁的抗拔承載力和抗壓承載力特性，為今后的設(shè)計和施工提供參考?？拱卧囼灲Y(jié)果表明，上拔荷載在超長PHC樁有效預(yù)壓應(yīng)力范圍內(nèi)，樁頂上拔量與荷載呈線性關(guān)系；抗壓試驗表明，超長PHC樁荷載沉降曲線為緩變型，承載潛力較大，實際抗壓承載力大于根據(jù)土工參數(shù)估算的承載力。
【關(guān)鍵詞】 超長PHC樁 抗拔 抗壓 靜載試驗
Verticalload Test of Superlong PHC Pile Driven in Soft Ground/Xie Yongjian1,Zhu Hehua1,Wang Huaizhong2,Yu Ning1(1 Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China;2 Baoshan Steel Co.,Ltd.,Shanghai 201900,China)
Abstract:The verticalcompression load test and tension load test of four PHC piles driven in soft ground are presented.The verticalcompression and tension bearing capacity are iscussed and some suggestions are given for design.The tension test results show that the tension load is linear to tension displacement when it is less than the value of prestressed load of PHC piles.And the compression test results show that the curves of compression load and settlement is nonlinear and the bearing capacity is greater than the one calculated basing on parameters of soil.
Keywords:PHC pile;verticalcompression;tension;load test
