强夯砂土地基中试验指标可替代性分析
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摘要
针对部分强夯砂土地基由于静力触探试验锥尖阻力过大导致无法触探的问题,以及如何正确选择强夯砂土地基表层评价指标的问题,通过强夯砂土地基加固效果检测试验结果分析、试验结果数据回归等方法,明确了静力触探试验与标准贯入试验在强夯砂土地基加固效果评价上是一致的,但二次变形模量与地基系数的试验结果相关性较差,不可互相替代。
In order to solve the problems that the tip resistance of the cone is too large to be touched in the static sounding test of some strongly compacted sandy soil foundation, and how to choose correct dynamic compaction sand surface evaluation indexes, through the dynamic compacted sandy soil foundation reinforcement effect test results analysis and test results data regression methods,it is clear that the static penetration test and the standard penetration test are consistent in evaluating the effect of consolidation of compacted sand foundation,however,the correlation between the secondary deformation modulus and the test results of the foundation coefficient is poor and cannot be replaced.
In order to solve the problems that the tip resistance of the cone is too large to be touched in the static sounding test of some strongly compacted sandy soil foundation, and how to choose correct dynamic compaction sand surface evaluation indexes, through the dynamic compacted sandy soil foundation reinforcement effect test results analysis and test results data regression methods,it is clear that the static penetration test and the standard penetration test are consistent in evaluating the effect of consolidation of compacted sand foundation,however,the correlation between the secondary deformation modulus and the test results of the foundation coefficient is poor and cannot be replaced.
引文
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[9]周选民.咸阳机场场道土基强夯工程投标报价浅析[J].西部探矿工程,2000(S1):138-139.
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[13]黄大维,杨有海,黄纪强,等.戈壁粗粒土填料填筑铁路路基压实评价指标研究[J].中国铁道科学,2012,33(2):21-27.
[2]曾庆军,龚晓南,李茂英.强夯时饱和软土地基表层的排水通道[J].工程勘察,2000(3):1-3+11.
[3]左名麒,朱树森.强夯法加固地基[M].北京:中国铁道出版社,1990.
[4]叶虔,丘建金.强夯法在深圳开山填海工程中的应用[J].水利水运科学研究,1999(2):201-206.
[5]张永钧,平涌潮,孔繁峰,等.围海造地地基强夯法处理及其施工技术问题[J].建筑科学,1995(3):3-12.
[6]陈奕柏,王杰,刘涛.强夯法在饱和软土地基中的应用及评价[J].沈阳建筑工程学院学报, 1997, 13(4):375-379.
[7]燕琳,李世海,张加华.爆炸-强夯联合加密饱和砂基的工程实践[J].土工基础,1997,11(4):1-4.
[8]李永明.强夯和强夯置换在深圳港盐田二期工程地基处理中的应用[J].水运工程,2001(4):71-75.
[9]周选民.咸阳机场场道土基强夯工程投标报价浅析[J].西部探矿工程,2000(S1):138-139.
[10]刘启旺,杨玉生,刘小生,等.标贯击数液化判别方法的比较[J].地震工程学报,2015,37(3):794-802.
[11]夏治中.静力触探Ps值与实测标准贯入击数N63.5的相关关系及其应用[J].勘察科学技术,1991(5):18-20.
[12] DIN. Soil-Testing procedures and testing equipment-Plate load test:DINEN 18134—2012[S].Berlin:DIN,2012.
[13]黄大维,杨有海,黄纪强,等.戈壁粗粒土填料填筑铁路路基压实评价指标研究[J].中国铁道科学,2012,33(2):21-27.