| 冲填土固结特性与变形沉降规律研究 |
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| 引用本文： | 唐益群, 何小军, 杨坪, 王建秀, 周洁. 2010: 冲填土固结特性与变形沉降规律研究. 工程地质学报, 18(S1): 11-16. |
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| 作者姓名： | 唐益群 何小军 杨坪 王建秀 周洁 |
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| 作者单位： | 1.同济大学岩土及地下工程教育部重点实验室 上海 200092;;2.同济大学地下建筑与工程系 上海 200092 |
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| 基金项目： | 国家自然科学基金资助项目(40872178);上海市重点学科建设项目资助(B308) |
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| 摘 要： | 应用室内模型试验的方法对上海地区冲填土的固结特性进行了研究,冲填土从水力吹填开始到固结完成,经历了三个阶段,即沉积阶段、土体颗粒接触阶段与土体固结阶段; 固结时有效应力的增长分为快速增长和缓慢增长两个时期,土体固结沉降主要发生在固结前期,沉降量与有效应力呈正比关系; 排水及荷载条件对冲填土的固结特性与强度有较大影响。本文通过双面排水自重固结、单面排水加载固结及单面排水自重固结三组对照试验,揭示了冲结、变形与沉降量之间的关系,为冲填土地区地面沉降的预测和地基变形的计算提供了有价值的参考。
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| 关 键 词： | 冲填土 固结特性 模型试验 沉降量 |
| 收稿时间： | 2010-06-16 |
| 修稿时间： | 2010-07-20 |
STUDY ON CONSOLIDATION CHARACTERISTICS AND SETTLEMENT DEFORMATION LAW OF HYDRAULIC FILL SOIL |
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| TANG Yiqun, HE Xiaojun, YANG Ping, WANG Jianxiu, ZHOU Jie. 2010: STUDY ON CONSOLIDATION CHARACTERISTICS AND SETTLEMENT DEFORMATION LAW OF HYDRAULIC FILL SOIL. JOURNAL OF ENGINEERING GEOLOGY, 18(S1): 11-16. |
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| Authors: | TANG Yiqun HE Xiaojun YANG Ping WANG Jianxiu ZHOU Jie |
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| Affiliation: | 1.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092;;2.Department of Geotechnical Engineering, Tongji University, Shanghai 200092 |
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| Abstract: | This paper studied on the consolidation characteristics of hydraulic fill soil in shanghai through the model test.Subsidence of hydraulic fill soil from hydraulic filling to full consolidation can be divided into three stages: sedimentary stage,particle contact stage and consolidation stage.The increasing of effective stress consists of rapid growth period and slow growth period.The settlement occurred mainly in the early period of consolidation in which the consolidation settlement was proportional to effective stress; and the drainage condition and load applied on soil had great influence on consolidation characteristics and strength of hydraulic fill soil.Based on three controlled experiments under self-weight consolidation with double drainage,single drainage consolidation with loading and self-weight consolidation with single drainage,respectively,the relationship of consolidation,deformation and settlement were indicated which provided helpful reference to settlement prediction and foundation deformation calculation in hydraulic fill soil areas. |
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| Keywords: | Hydraulic fill soil Consolidation characteristic Model test Settlement value |
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