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强夯置换复合地基加固盐渍土效果的试验研究

张彧, 房建宏, 刘建坤, 徐安花

张彧, 房建宏, 刘建坤, 徐安花. 强夯置换复合地基加固盐渍土效果的试验研究[J]. 岩土工程学报, 2011, 33(zk1): 251-254.
引用本文: 张彧, 房建宏, 刘建坤, 徐安花. 强夯置换复合地基加固盐渍土效果的试验研究[J]. 岩土工程学报, 2011, 33(zk1): 251-254.
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ZHANG Yu, FANG Jian-hong, LIU Jian-kun, XU An-hua. Field tests on reinforcement effects of ground treatment of composite foundation in saline soils by dynamic compaction replacement[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 251-254.
Citation: ZHANG Yu, FANG Jian-hong, LIU Jian-kun, XU An-hua. Field tests on reinforcement effects of ground treatment of composite foundation in saline soils by dynamic compaction replacement[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 251-254.
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强夯置换复合地基加固盐渍土效果的试验研究  English Version

  • 1. 北京交通大学土木建筑工程学院，北京 100044 ; 2. 兰州交通大学交通运输学院，甘肃 兰州 730070 ; 3. 青海省交通科学研究所，青海 西宁 810001

基金项目: 青海省交通建设科技项目（ 2009-02 ）
详细信息
    作者简介:

    张 彧 (1981 – ) ，男，山东莱州市人，博士研究生，讲师，主要从事路 基与岩土力学研究与教学工作。

  • 中图分类号: TU472.3

Field tests on reinforcement effects of ground treatment of composite foundation in saline soils by dynamic compaction replacement

  • 1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China; 3. Qinghai Research Institute of Transportation, Xining 810001, China

摘要

    摘要
  • 摘要: 青海省察尔汗 - 格尔木高速公路地处青藏高原寒区和盐湖区，地基土力学性质受土体含水率和气候条件变化等因素影响较大，给工程建设带来一定困难。通过对该盐渍土试验段进行强夯置换复合地基处理后的原位测试，给出强夯置换复合地基承载力和变形模量确定方法，并对加固后复合地基的强度和变形模量的计算结果给予了分析，承载力满足要求。同时对强夯置换复合地基的桩土工作机理以及沉降折减等问题给出了评价，强夯置换方案有利于盐渍土地基中水分和盐分的迁移及减少地基沉降，具有良好的加固效果。
    Abstract: The Qarhan-Golmud Highway of Qinghai Province is located in cold region of Qinghai-Tibet Plateau and salt lake region. The mechanical properties of saline soils varly with moisture and climate, which will influence the project construction. The gravel piles formed by the dynamic compaction replacement are applied in composite foundation of saline soils, and field tests are carried out in this region. It provides methods for determining the coefficients of the capacity and deformation modulus of composite foundation with the gravel piles formed by the dynamic compaction replacement. The calculated values are analyzed, and they meet the met design requirements. At the same time, the strength and working mechanism of pile-soil and settlement reduction of the composite foundation are analyzed after reinforcement. The reinforcement case of dynamic compaction replacement has good reinforcement effects in saline soils of salt lake region, which helps the migration of water and salt and reduces foundation settlement in saline soils.
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    • 参考文献(10)
  • [1] 刘建坤 , 曾巧玲 , 侯永峰 . 路基工程 [M]. 北京 : 中国建筑工业出版社 , 2006. (LIU Jian-kun, ZENG Qiao-ling, HOU Yong-feng. Subgrade Engineering[M]. Beijing: China Building Industry Press, 2006. (in Chinese))
    [2] GB50021 — 2001 岩土工程勘察规范 [S]. 北京 : 中国建筑出版社 , 2002. (GB50021 — 2001 Code for Geotechnical Engineering Investigation[S]. Beijing: China Building Industry Press, 2002. (in Chinese))
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出版历程
  • 收稿日期:  2011-04-12
  • 发布日期:  2011-11-30

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