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潘旭亮1,2，張欽喜1，杜修力1，張在明1,2
(1北京工業(yè)大學建筑工程學院，北京100124;2北京市勘察設計研究院有限公司，北京100038)[摘要] CFG樁復合地基沉降計算是工程設計的關鍵，也是亟待改進、完善的重要課題。依據(jù)34個樓座CFG樁復合地基實測沉降數(shù)據(jù)反演分析，結合規(guī)范理論計算方法，建立樁間土平均應力計算公式，提出一種新的CFG樁復合地基沉降方法。同時，根據(jù)實測沉降數(shù)據(jù)反算得出的復合區(qū)壓縮模量，與規(guī)范計算得到復合區(qū)壓縮模量進行對比，結果表明：實際復合區(qū)的壓縮模量是規(guī)范法復合區(qū)壓縮模量的2.6倍。
[關鍵詞] CFG樁；地基沉降；變形計算；反演分析
中圖分類號：TU473, TU433 文獻標識碼：A 文章編號：1002-848X(2011) S2-0366-04CFG pile composite ground settlement calculation method ameliorated based on field settlement data
Pan Xuliang1,2, Zhang Qinxi1, Du Xiuli1, Zhang zaiming1,2
(1 College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China; 2 Beijing Engineering Consultants Ltd., Beijing 100038, China)Abstract: CFG pile composite ground settlement calculation is the key of project design, and is also important problem need to improve and consummate. Based on the back-analysis of the measured settlements of 34 buildings, integrating the code calculation method, building average press calculation of soil midst of piles, put a new calculation method of CFG pile composite ground settlement. Simultaneity, the compression modulus of composite area are anti-calculated by field measures data, compare to code method, result shows the former is 2.6 times than the latter.
Keywords: CFG pile; foundation settlement, settlement calculation; back-analysis
