巖溶地區(qū)基礎(chǔ)選型的思路和建議
鄭偉國
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鄭偉國 (深圳市建筑設(shè)計研究總院,深圳 518031)[摘要]巖溶地區(qū)不良地質(zhì)作用較發(fā)育、地質(zhì)條件復雜,在這種地區(qū)建設(shè)時較難順利地解決好基礎(chǔ)選型及施工方法的選擇,基礎(chǔ)工程常常進展困難,其主要原因是缺乏應對復雜、有危害的地質(zhì)條件的基本思路。從方法論入手,尋求解決巖溶地質(zhì)難題的策略,按照巖溶埋藏較深時考慮回避、中埋時分散地質(zhì)風險、巖溶淺埋時消除危害的對策,探討巖溶地區(qū)基礎(chǔ)選型,提出若干建議和設(shè)想。[關(guān)鍵詞]巖溶地區(qū);基礎(chǔ)設(shè)計;樁基中圖分類號:TU475+9文獻標識碼:A文章編號:1002-848X(2012)07-0115-04Recommendations and ideas on the selection of foundation in karst areasZheng Weiguo(Shenzhen General Institute of Architectural Design and Research, Shenzhen 518031, China)Abstract: Progress of foundation in karst areas was usually very difficult, it was more difficult to choose foundation type and construction method. The key reason is the lack of the basic ideas to solve the complex, hazardous geological conditions. Starting from the methodology, the strategies were sought to solve problems of karst geology, the selection of foundation type was discussed, a number of recommendations and ideas were proposed. When the karst is buried deep enough, it should consider-avoiding the karst. When the karst is not very deep buried, it should spread the loads of structure to reduce geological risks. When the karst is shallow buried, it should eliminate geological hazards.Keywords: karst area; foundation design; pile foundation作者簡介:鄭偉國,博士,高級工程師,一級注冊結(jié)構(gòu)工程師,Email:strzheng@21cn.com。參考文獻[1]鄭偉國,謝毓才,薛緒標-巖溶地區(qū)樁基選型淺談[J].巖土工程學報,2011, 33(S2):404-407.[2]張明義.靜力壓入樁的研究與應用[M]. 北京:中國建材工業(yè)出版社,2004.[3]薛緒標,鄭偉國,周力紅,等.深圳龍崗盛龍花園二期樁基設(shè)計[J].建筑結(jié)構(gòu),2011, 41(S1):1261-1264.[4]周秋燕,曾毅學.載體樁在巖溶地區(qū)某工程中的應用[J].建筑結(jié)構(gòu),2011, 41(3):98-99.[5]鄧燕,湯小軍.PHC管樁作樁身的復合載體樁的應用[J].建筑結(jié)構(gòu),2009, 39(10):147-150.[6]GB 50007—2002建筑地基基礎(chǔ)設(shè)計規(guī)范 [S]. 北京:中國建筑工業(yè)出版社, 2002.[7]JGJ 94—2008建筑樁基技術(shù)規(guī)范 [S]. 北京:中國建筑工業(yè)出版社, 2008.