| 粉喷桩复合地基及软岩填料路堤的沉降控制研究 |
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| 引用本文： | 卿三惠,曹新文,谢强. 粉喷桩复合地基及软岩填料路堤的沉降控制研究[J]. 铁道工程学报, 2010, 0(3) |
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| 作者姓名： | 卿三惠 曹新文 谢强 |
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| 作者单位： | 1. 中铁二局集团有限公司,成都,610031
2. 西南交通大学,成都,610031 |
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| 摘 要： | 研究目的:采用土工离心模型试验,验证红层地区粉喷桩复合地基及软岩填料路堤的工后沉降是否满足设计控制标准的要求,以指导设计与施工。研究结论:通过试验段的实验研究表明:红层软岩填料的压实系数应控制在0.93以上,且路堤填完后至少6个月才能铺轨。在此条件下,粉喷桩复合地基路堤顶面的工后总沉降能够满足设计控制标准(沉降15 cm,沉降速率4 cm/年)的要求。验证设计采用粉喷桩(桩间距1.0 m,桩直径50 cm)复合地基及软岩填料填筑路堤是可行的。该成果对设计与施工具有重要的指导意义。
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| 关 键 词： | 铁路工程 粉喷桩复合地基 软岩填料路堤 离心模型试验 沉降控制 |
Study on Settlement Control of Dig Jet Mixing Pile Composite Foundation and Soft Rock Filling Embankment |
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| QING San-hui,CAO Xin-wen,XIE Qiang. Study on Settlement Control of Dig Jet Mixing Pile Composite Foundation and Soft Rock Filling Embankment[J]. Journal of Railway Engineering Society, 2010, 0(3) |
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| Authors: | QING San-hui CAO Xin-wen XIE Qiang |
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| Affiliation: | QING San-hui1,CAO Xin-wen2,XIE Qiang2(1.China Railway No.2 Engineering Group Co.Ltd.,Chengdu,Sichuan 610031,China,2.Southwest Jiaotong University,China) |
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| Abstract: | Research purposes: Application of geotechnical centrifugal model test verifies whether the post-construction settlement of the dig jet mixing pile composite foundation and soft rock filling embankment in red rock area can meet requirement of the designed control standard or not for the purpose of guiding the design and construction.Research conclusions:The experiment done in the experimental section shows the compacting factor of soft rock filling material in red rock area shall be more than 0.93,and the tr... |
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| Keywords: | railway engineering dig jet mixing pile composite foundation soft rock filling embankment centrifugal model test settlement control |
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