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简连贵, 郑志清. 外海料源回填造地土壤静动态压密沉陷特性之探讨[J]. 岩土工程学报, 1997, 19(6): 62-72.
引用本文: 简连贵, 郑志清. 外海料源回填造地土壤静动态压密沉陷特性之探讨[J]. 岩土工程学报, 1997, 19(6): 62-72.
Jian Liangui, Zheng Zhiqing. Discussion on the StaticDynamic Consolidation Settlement Properties of Reclaimed Soil in Offshore Area[J]. Chinese Journal of Geotechnical Engineering, 1997, 19(6): 62-72.
Citation: Jian Liangui, Zheng Zhiqing. Discussion on the StaticDynamic Consolidation Settlement Properties of Reclaimed Soil in Offshore Area[J]. Chinese Journal of Geotechnical Engineering, 1997, 19(6): 62-72.

外海料源回填造地土壤静动态压密沉陷特性之探讨

Discussion on the StaticDynamic Consolidation Settlement Properties of Reclaimed Soil in Offshore Area

  • 摘要: 采用云林离岛基础工业区水力抽砂回填外海料源区土壤为试验土样,以海水作为孔隙水介质,在实验室利用简连贵(1993)发展之水力抽砂法模拟现地水力抽砂回填方式准备试体,以获取回填造地土壤之颗粒堆积特性。另配合传统的湿捣法,以重量控制方式,配比不同相对密度与细料含量试体,进行一系列Rowe氏压密试验,同时针对回填土壤之堆积特性、细料含量、相对密度及孔隙介质等影响因素深入探讨,藉以评估回填土壤之压密沉陷特性。利用本文所建立之关系式可完整评估回填造地土壤受静载重与动态荷重后的总沉陷量,提供填海造地高程设计与压密沉陷稳定分析之依据。

     

    Abstract: In this study,the soil was obtained from insitu material in nearshore area of YunLin Industrial Estate.By using sea water as pore media,and using the hydraulic simulation method developed by Chien(1993) in laboratory,the packing properties of the recliamed soil is discussed.Using the traditional moist tamping method,the specimen are prepared with different relative density and fines content,and Rowetype consolidation test are conducted.The inflences of packing properties,fines content,relative density,and pore media are discussed,so that the consolidation settlement behavior are evaluated.In the study,cyclic dynamic load test are conducted by using the Rowetype consolidation cell,to evaluate the influence of earthquake or cyclic stress on recliamed soil.As shown in the results,dynamic loading has distinct influence on the consolidation settlement properties of reclaimed soil.Under 60 number of cycles,the average settlement value for dynamic consoildation settlement is 2 times larger than static consoildation settlement.The test results and the related consolidation relations can be used for land reclamation and coastal design,and research purposes.

     

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