| 何长生,李康.基于非线性固结参数的砂桩地基沉降计算[J].现代交通技术,2009,(3):18-20 |
| 基于非线性固结参数的砂桩地基沉降计算 |
| Settlement Computation of the Sand Piles Based on the Non-linearity Consolidation Parameter |
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| DOI： |
| 中文关键词: 软土地基 砂桩 复合模量法 非线性固结参数 静力触探 沉降 固结度 |
| 英文关键词:soft ground sand piles composite modulus method non-linearity consolidation parameter cone penetration test (CPT) settlement consolidation degree |
| 基金项目: |
| 何长生 李康 |
| 江苏省交通科学研究院,江苏南京,210017? |
| 摘要点击次数: 4704 |
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| 中文摘要: |
| 采用砂桩处置软土地基,在自重及路基堆栽作用下将产生较大的固结沉降,而且其固结系数也随时间而变化,具有非线性的固结特性.如果仍然采用恒定的固结参数计算固结度,将会带来一定的误差.基于江苏某高速公路软土路堤的实测沉降数据,采用恒定的固结参数计算沉降,发现其结果较实测偏大,且二者差距随时间有增大趋势.文章通过曾国熙固结度的普遍表达式,反演出固结参教的非线性函数,结合砂井地基固结度计算中的改进的太沙基法,提出对固结度进行修正的计算公式,并基于现场的静力触探(CPT)试验资料,采用复合模量法计算出沉降曲线,将其与实 |
| 英文摘要: |
| The consolidation settlement of soft soil embankment that treated with the sand piles is large because of soil and embankment weight,and the consolidation coefficient is changing non-linearly. It will cause error when using constantly coefficient of consolidation to calculate the consolidation degree. Based on the in-situ test of an expressway embankment in Jiangsu,this paper calculates the consolidation settlement using the constant consolidation parameter,the results show that the calculated results is bi... |
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