某基坑支護(hù)與基礎(chǔ)設(shè)計及預(yù)應(yīng)力管樁在特殊地質(zhì)中的設(shè)計與應(yīng)用
韓建強(qiáng)，高玉斌，萬志勇，王偉江
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韓建強(qiáng)，高玉斌，萬志勇，王偉江(廣州市設(shè)計院, 廣州 510620)［摘要］詳細(xì)論述了廣州國際體育演藝中心基坑與基礎(chǔ)方案的選型與設(shè)計，在此基礎(chǔ)上討論了預(yù)應(yīng)力管樁應(yīng)用于基坑支護(hù)這種特殊工程，并且樁端位于類似花崗巖殘積土這種遇水軟化、崩解的巖土層以及場地淤泥層深厚且范圍較大的特殊地質(zhì)中時，易出現(xiàn)樁傾斜或折斷以及承臺外露等問題的情況，并探討了相關(guān)的處理措施。［關(guān)鍵詞］預(yù)應(yīng)力管樁；腰梁連接；抗彎設(shè)計；嵌固深度；花崗巖強(qiáng)風(fēng)化巖；樁傾斜或折斷；承臺外露中圖分類號：TU473文獻(xiàn)標(biāo)識碼：A文章編號：1002848X(2012)11012804Design of one foundation excavation and foundation and design and application of prestressed concrete tube-pile in special geological conditionsHan Jianqiang, Gao Yubin, Wan Zhiyong, Wang Weijiang（Guangzhou Design Institute, Guangzhou 510620, China）Abstract: The design of foundation and supporting structure for its pit in Guangzhou International Sports Arena was illustrated. Based on this project, the application of prestressed concrete tube-pile to supporting structure for foundation pit was discussed, especially the pile lied on the area like granite residual soil. In addition, the problems of pile tilt, break and cap exposure appeared in the deep and wide silt field were studied, and the solution methods were put forward.Keywords: prestressed concrete tube-pile; middle beam connection; flexural design; embedded depth; highly weathered granite; pile prone to tilt or break; pile cap exposure作者簡介：韓建強(qiáng)，博士，教授級高級工程師，院副總工程師，一級注冊結(jié)構(gòu)工程師，Email:hjq333@21cn.com。
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