| 吹填软土邓肯-张模型与应变硬化指数理论研究 |
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| 引用本文： | 张艳,杨爱武,周金.吹填软土邓肯-张模型与应变硬化指数理论研究[J].岩土工程技术,2011,25(2):72-74,80. |
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| 作者姓名： | 张艳 杨爱武 周金 |
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| 作者单位： | 天津城市建设学院,土木工程系,天津,300381;天津市软土工程特性与工程环境重点实验室,天津,300381 |
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| 基金项目： | 天津市科技发展计划重点科技攻关项目，天津市科技创新专项资金项目 |
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| 摘 要： | 天津滨海新区正在进行大规模吹填造陆工程，由于吹填土成分主要以细粒为主，固结不充分，工后沉降问题成为亟需解决的问题。通过吹填软土重塑样的三轴固结剪切试验，以试验所得的应力应变关系曲线为基础，比较研究了邓肯一张模型和应变硬化指数理论。结果表明：两种模型各有特点，邓肯张模型能够准确预测应力应变曲线的始末段，而应变硬化指数理论参数能够反映吹填重塑土的应变硬化能力。
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| 关 键 词： | 吹填软土 邓肯-张模型 应变硬化 三轴试验。 |
Study on Duncan-Chang Model and Strain Hardening Index Theory of Soft Dredger Fill |
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| Zhang Yan,Yang Aiwu,Zhou Jin.Study on Duncan-Chang Model and Strain Hardening Index Theory of Soft Dredger Fill[J].Geotechnical Engineering Technique,2011,25(2):72-74,80. |
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| Authors: | Zhang Yan Yang Aiwu Zhou Jin |
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| Institution: | Zhang Yan Yang Aiwu Zhou Jin (1. Department of civil engineering, Tianjin Institue of urban construction, Tianjin 300381, China l 2. Key laboratory engineering character and engineering environment of soft soil in Tianjin, Tianjin 300381, China) |
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| Abstract: | Large-scale reclamation project is being conducted in Tianjin Binhai New Area. For plentiful fine grain in dredger fill and uncompleted consolidation, the settlement after construction needs to be solved immediately. In thise paper, triaxial tests were performed on the remoulded samples of the soft dredger fill. Based on the analysis of the stress-strain curves derieved from the tests, duncan-chang model and strain hardening theory were compared. The results showed distinctive characteristies of both models：Duncan-Chang model can predict stress-strain curve accurately at the initial and last stage, but strain hard-ening theory may reflect strain hardening ability for remoulded dredger fill. |
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| Keywords: | soft dredger fill Duncan--Chang model strain hardening triaxial test |
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