| 真空预压加固吹填淤泥土现场试验研究 |
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| 引用本文： | 唐彤芝,黄家青,关云飞,陈海波,程万钊.真空预压加固吹填淤泥土现场试验研究[J].水运工程,2010(4). |
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| 作者姓名： | 唐彤芝 黄家青 关云飞 陈海波 程万钊 |
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| 作者单位： | 南京水利科学研究院,江苏,南京,210029 |
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| 基金项目： | 南京水利科学研究院基本科研业务费专项资金 |
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| 摘 要： | 分析了某滨海地区新近吹填淤泥土的物理力学性质、颗粒组成和强度分布特点,通过现场试验研究了真空预压作用下吹填淤泥土的沉降和强度变化特性,指出吹填淤泥土为大变形沉降,固结和强度提高较慢,加密排水板可促进淤泥土的排水固结,增大沉降,泥面铺设土工布有利于真空压力的平面传递和排水固结.分析了抽真空过程中排水板周围淤泥抱团区的土性、颗粒组成和强度变化,指出吹填淤泥土颗粒细、结构性强度低、含水率高、流动性大是形成淤泥抱团的主要原因,提出了解决设想.
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| 关 键 词： | 吹填淤泥 真空预压 软土地基 固结 强度 |
Experimental study on dredger fill sludge improved by vacuum preloading |
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| TANG Tong-zhi,HUANG Jia-qing,GUAN Yun-fei,CHEN Hai-bo,CHENG Wan-zhao.Experimental study on dredger fill sludge improved by vacuum preloading[J].Port & Waterway Engineering,2010(4). |
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| Authors: | TANG Tong-zhi HUANG Jia-qing GUAN Yun-fei CHEN Hai-bo CHENG Wan-zhao |
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| Institution: | TANG Tong-zhi,HUANG Jia-qing,GUAN Yun-fei,CHEN Hai-bo,CHENG Wan-zhao(Nanjing Hydraulic Research Institute,Nanjing 210029,China) |
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| Abstract: | Some characteristics of fresh dredger fill sludge in a coastal area including physical and mechanical performances,grain composition and strength distribution are analyzed.The settlement and strength change of dredger fill sludge in the course of vacuum preloading is studied by in-site experiment and model test.It shows that the settlement of dredger fill sludge is larger,and the rate of consolidation and strength increase is slower in contrast with general soft clay.The drainage consolidation effect and se... |
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| Keywords: | dredger fill sludge vacuum preloading soft ground consolidation strength |
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