| 考虑结构性影响的吹填软土流变历时特性研究 |
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| 引用本文： | 杨爱武,闫澍旺,杜东菊. 考虑结构性影响的吹填软土流变历时特性研究[J]. 工业建筑, 2012, 42(6): 106-111,37 |
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| 作者姓名： | 杨爱武 闫澍旺 杜东菊 |
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| 作者单位： | 1. 天津城市建设学院土木工程系,天津300384 天津市软土工程特性与工程环境重点实验室,天津300384
2. 天津大学建筑工程学院,天津,300381 |
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| 基金项目： | 天津市科技发展计划项目 |
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| 摘 要： | 通过三轴流变试验仪,以原状土样与重塑土样为试验材料,对吹填软土流变历时特性进行了研究。研究结果表明:结构性对土体流变特性有明显影响。结构性的存在,使得原状土流变破坏峰值高于重塑土;当应力低于结构屈服应力时,由于结构性的作用,抵抗变形能力强,使原状土流变趋于稳定的时间要小于重塑土;当应力高于结构屈服应力时,随着结构的破坏,其流变历时特性逐渐向重塑土靠拢,最终趋于一致。
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| 关 键 词： | 吹填软土 结构性 结构损伤 流变特性 |
STUDY ON RHEOLOGICAL DIACHRONIC PROPERTY CONSIDERING STRUCTURAL CHARACTERISTICS OF SOFT DREDGER FILL |
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| Yang Aiwu,Yan Shuwang,Du Dongju. STUDY ON RHEOLOGICAL DIACHRONIC PROPERTY CONSIDERING STRUCTURAL CHARACTERISTICS OF SOFT DREDGER FILL[J]. Industrial Construction, 2012, 42(6): 106-111,37 |
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| Authors: | Yang Aiwu Yan Shuwang Du Dongju |
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| Affiliation: | 1,2 (1.Department of Civil Engineering,Tianjin Institute of Urban Construction,Tianjin 300384,China; 2.Key Laboratory of Soft Soil Character and Engineering Environment of Tianjin,Tianjin 300384,China; 3.College of Civil Engineering and Architecture,Tianjin University,Tianjin 300381,China) |
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| Abstract: | Based on undisturbed and remolded samples as test materials,triaxial rheometer was used to study rheological diachronic characteristics of soft dredger fill.The results showed that the structure affected rheological properties significantly.Because of structure,the undisturbed soil rheological damage peak was higher than that of remolded soil.When the stress was lower than yield stress,the stable time of rheology of the undisturbed soil was less than remolded soil due to the structure’s resistance to deformation.When the stress was higher than yield stress,along with structural damage,its rheological duration characteristics gradually tended to the ones of the remolded soil,eventually to the same. |
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| Keywords: | soft dredger fill structural characteristics structural damage theological properties |
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