撐桿-拉桿模型在厚樁承臺中的應(yīng)用
王立才, 胡凌華
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（浙江綠城東方建筑設(shè)計有限公司， 杭州 310012）
［摘要］對國外規(guī)范ACI 318-11，AASHTO LRFD 2012和FIP 1999中關(guān)于撐桿-拉桿模型的規(guī)定進(jìn)行了比較，吸收了國外規(guī)范的合理建議，推薦了一個更為合理的撐桿-拉桿模型。收集了165個深梁和121個四樁承臺試驗數(shù)據(jù)，對所有試驗數(shù)據(jù)均按不同規(guī)范的建議方法、推薦的模型方法進(jìn)行試驗承載力和理論承載力的比較。比較表明，推薦的撐桿-拉桿模型方法的計算結(jié)果具有更為合適的安全儲備和較小的變異系數(shù)。通過兩個設(shè)計實例，驗證了推薦的撐桿拉桿模型方法是簡單可操作的，且結(jié)果是合理的。［關(guān)鍵詞］撐桿-拉桿模型; 厚樁承臺; 設(shè)計實例中圖分類號：TU473 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2015)14-0092-07
Application of strut-and-tie model in design of thick pile capWang Licai, Hu Linghua（Zhejiang Greentown Oriental Architecture Design Co., Ltd., Hangzhou 310012, China）Abstract: The specifications about strut-and-tie model in codes of ACI 318-11, AASHTO LRFD 2012 and FIP 1999 were compared, and a more reasonable strut-and-tie model was recommended with adoptions of some reasonable suggestions of foreign codes. Test data of 165 deep beams and 121 four-pile caps were collected. Experimental bearing capacities were compared to the theoretical bearing capacities according to the suggested methods of different codes and proposed model method. The comparison shows that the result caculated by the proposed strut-and-tie model method has more appropriate safety conservation and smaller variation coefficient. Two design examples were applied to show that the proposed strut-and-tie model method is easy to operable and the result is reasonable.Keywords: strut-and-tie model; thick pile cap; design example
作者簡介：王立才，碩士，一級注冊結(jié)構(gòu)工程師，Email：502666673@qq.com。
