岩溶地区基础选型的思路和建议
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郑伟国 (深圳市建筑设计研究总院,深圳 518031)[摘要]岩溶地区不良地质作用较发育、地质条件复杂,在这种地区建设时较难顺利地解决好基础选型及施工方法的选择,基础工程常常进展困难,其主要原因是缺乏应对复杂、有危害的地质条件的基本思路。从方法论入手,寻求解决岩溶地质难题的策略,按照岩溶埋藏较深时考虑回避、中埋时分散地质风险、岩溶浅埋时消除危害的对策,探讨岩溶地区基础选型,提出若干建议和设想。[关键词]岩溶地区;基础设计;桩基中图分类号:TU475+9文献标识码:A文章编号: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作者简介:郑伟国,博士,高级工程师,一级注册结构工程师,Email:strzheng@21cn.com。参考文献[1]郑伟国,谢毓才,薛绪标-岩溶地区桩基选型浅谈[J].岩土工程学报,2011, 33(S2):404-407.[2]张明义.静力压入桩的研究与应用[M]. 北京:中国建材工业出版社,2004.[3]薛绪标,郑伟国,周力红,等.深圳龙岗盛龙花园二期桩基设计[J].建筑结构,2011, 41(S1):1261-1264.[4]周秋燕,曾毅学.载体桩在岩溶地区某工程中的应用[J].建筑结构,2011, 41(3):98-99.[5]邓燕,汤小军.PHC管桩作桩身的复合载体桩的应用[J].建筑结构,2009, 39(10):147-150.[6]GB 50007—2002建筑地基基础设计规范 [S]. 北京:中国建筑工业出版社, 2002.[7]JGJ 94—2008建筑桩基技术规范 [S]. 北京:中国建筑工业出版社, 2008.