深层平板载荷试验在某工程中的应用
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(1 合肥工业大学资源与环境工程学院,合肥 230009;2 安徽省金田建筑设计咨询有限责任公司,合肥 230051)[摘要]为得到更加准确的地基承载力特征值及变形参数,结合某工程实例,简述合肥市某小区工程内3个试验点的深层平板载荷试验过程。介绍了改进的深层平板载荷试验装置,该装置通过人工挖孔,利用工作面上方岩土层提供反力,有效地形成了反力系统。并对试验所得数据进行整理分析,得到了3个试验点的地基承载力特征值,从而确定此土层的地基承载力特征值为4 500kPa及变形模量为178.45MPa。关键词]深层平板载荷试验; 荷载-沉降曲线; 地基承载力; 变形模量中图分类号:TU413.4 文献标识码:A 文章编号:1002-848X(2015)01-0091-03Application of deep plate loading test in a projectWu Dandan1, Yang Chengbin1, Wang Jiangtao2(1 School of Resources and Enviromental Engineering, Hefei University of Technology, Hefei 230009, China; 2 Anhui Jintian Architectural Design Consulting Co., Ltd., Hefei 230051, China)Abstract: To get more accurate characteristic values of foundation bearing capacity and deformation parameters, combined with an engineering case, the process of the deep plate loading tests at three points in the soil of a residential project in Hefei was described. The improved deep plate loading test device was introduced. By means of artificial digging hole, the device formed an effective counterforce system using reactions from geotechnical layer above the working face. The test data were collected and analyzed to get characteristic values of foundation bearing capacity at three points, and finally the characteristic value of foundation bearing capacity of 4 500kPa and deformation modulus of 178.45MPa were determined.Keywords: deep plate loading test; load-settlement curve; bearing capacity of foundation; deformation modulus作者简介:武丹丹,硕士研究生,Email:15155911262@163.com。参考文献[1]GB 50021—2001岩土工程勘察规范[S]. 2009年版.北京:中国建筑工业出版社,2009.[2]GB 50007—2011 建筑地基基础设计规范[S].北京:中国建筑工业出版社,2012.[3]杨国春, 吴银柱, 于波. 高层建筑深层平板载荷试验的研究[J].地质与勘探, 2002,38 (4):90-93.[4]张力群. 深层平板载荷试验的实践[J]. 西部探矿工程, 2005,17 (S1):15-16.[5]王凌寒, 程泽海, 祝江鸿. 深层平板载荷试验确定桩端土承载力和变形模量[J]. 建筑科学, 2010,26 (5):14-16.