2015年4月上 施工技术 第44卷第7期 CONSTRUCTION TECHNOLOGY 49 D0I:10.7672/5js2015070049 安哥拉换填垫层地基的沉降计算分析 彭友君1 2，杨铮2，彭博2 (1.北京城建勘测设计研究院有限责任公司，北京100101；2.北京城建设计发展集团股份有限公司，北京100037) [摘要]安哥拉浅部棕红色砂Quelo地层具有湿陷性特征，采用换填垫层进行地基处理后，沉降计算是岩土工程研 究最重要的课题.分别对换填垫层、压实地基、天然地基浸水后，通过勘探和原位测试给出了土的物理力学指标， 建立锥头阻力与地基反力系数的回归方程，完善随深度变化的沉降计算参数，按照英国标准规定的公式和算例进 行沉降计算，假定条形基础与换填垫层组成整体基础并对其可靠性进行验算，从而简化了沉降计算方法，将沉降计 算结果与实测沉降量对比分析后，说明沉降计算结果可信并满足设计要求，实体楼的浸水试验也得到了印证，安哥 拉砂土地基采用换填垫层法进行地基处理是合理的. [关键词]地基：沉降；换填垫层；反力系数：计算 [中图分类号]TU433 [文献标识码]A [文章编号]1002-8498(2015)07-0049-06 Settlement Calculation and Analysis of Replacement Cushion Foundation in Angola Peng Youjun.2 Yang Zheng? Peng Bo2 (1.Beijing Urban Construction Exploration Surreying Design Research Institute Co.Ltd.Beijing 100101 China; 2.Beijing Urban Construction Design Derelopment Group Co.Ltd.Beijing 100037 China) Abstract:The shallow red brown sand Quelo stratum in Angola has the characteristic of collapsibility and the most important subject of geotechnical engineering research is settlement calculation after foundation treatment by adopting replacement cushion.After immersion of the replacement cushion pacted foundation and natural foundation the physical and mechanical indicators of the soil are given through exploration and in-situ test the regression equation of the cone resistance and foundation reaction force coefficient is established and the settlement calculation parameters changed with depth are perfected.Settlement calculation is conducted according to th...
安哥拉换填垫层地基的沉降计算分析.pdf
