| 京沪高铁CFG桩复合地基上填方路基沉降预测研究 |
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| 引用本文： | 彭雄志,朱凌.京沪高铁CFG桩复合地基上填方路基沉降预测研究[J].路基工程,2016,0(6):11-15. |
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| 作者姓名： | 彭雄志 朱凌 |
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| 作者单位： | 西南交通大学土木工程学院, 成都 610031 |
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| 基金项目： | 中央高校基本科研项目（SWJTU11BR017） |
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| 摘 要： | 以京沪高速铁路京徐段（K01+450~K04+786.04）CFG桩复合地基上填方路基工程为依托，基于改进指数曲线法，在路基沉降观测数据的基础上，对该段路基沉降进行了预测分析。结果表明:在该区段内对沉降量级小、相对波动大的高铁路基沉降数据，结合三点法求解的指数曲线法拟合及预测具有很好的适用性；数据的初始时间点选取在路基填筑完成之后，选择2个月及以上作为时间间隔，有利于提高沉降预测的精度。
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| 关 键 词： | 高速铁路 CFG桩复合地基 填方路基 沉降预测 改进指数曲线法 |
| 收稿时间： | 2019-11-06 |
Predicative Research on Settlement of Fill Subgrade on CFG Pile Composite Foundation in Beijing—Shanghai High-speed Rail |
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| Abstract: | Relying on fill subgrade project on CFG pile composite foundation of Beijing—Xuzhou Section (K01+450~K04+786.04) of Beijing—Shanghai High-speed Rail and based on subgrade settlement observation data by improved exponential curve method, predicative analysis was performed on subgrade settlement of this section. The results show that the settlement data of high-speed rail subgrade with small settlement grade and big relative fluctuation have good applicability for proposed predication by combining exponential curve solved from three-point method. The initial data selection time is after subgrade filling. The interval of two months or above is good for improving the accuracy of settlement prediction. |
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