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(上海巖土工程勘察設(shè)計(jì)研究院有限公司， 上海 200031)
［摘要］通過收集上海及其周邊地區(qū)的工程試樁資料和靜力觸探資料，對現(xiàn)行上海規(guī)范中應(yīng)用靜力觸探成果指標(biāo)估算預(yù)制樁單樁極限承載力的計(jì)算方法精度進(jìn)行檢驗(yàn)，通過對現(xiàn)行規(guī)范中各項(xiàng)計(jì)算參數(shù)的對比分析，提出了應(yīng)用靜力觸探成果指標(biāo)估算預(yù)制樁單樁極限承載力的改進(jìn)計(jì)算方法。通過工程實(shí)例驗(yàn)證表明，改進(jìn)的計(jì)算方法所計(jì)算得到的預(yù)制樁單樁極限承載力結(jié)果與工程實(shí)測值更加接近，提高了應(yīng)用靜力觸探成果指標(biāo)估算預(yù)制樁單樁極限承載力的計(jì)算精度。
［關(guān)鍵詞］預(yù)制樁； 極限承載力； 靜力觸探法； 多元線性回歸
中圖分類號： TU47 文獻(xiàn)標(biāo)識(shí)碼： A 文章編號： 1002-848X(2015)S2-0217-04
Study on ultimate bearing capacity calculation of pile based on static cone penetration test
Lu Jiafeng, Gu Guorong, Yang Shifei
(Shanghai Geotechnical Investigations & Design Institute Co., Ltd., Shanghai 200031, China)
Abstract: Using static cone penetration test data to calculate the ultimate bearing capacity of pile is recommended by many standards in China. In this study, many pile testing data of engineering in Shanghai and around area were collected to figure out the accuracy of the recommended calculation method. After the calculation and analysis, an improved calculation method was proposed to improve the accuracy of ultimate bearing capacity calculation. And the result of this improved calculation method was proved to be closer to the value in the pile loading test. It means that the improved calculation method proposed in this study can provide more reliable estimation of ultimate bearing capacity of piles in engineering.
Keywords: precast pile; ultimate bearing capacity; static cone penetration test; multiple linear regression
*上海市科學(xué)技術(shù)委員會(huì)“上海市巖土工程專業(yè)技術(shù)服務(wù)平臺(tái)”項(xiàng)目資助(14DZ2292800)。
作者簡介：路家峰，碩士，Email：lujiafeng@live.com。
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