颗粒级配对真空预压法处理吹填土效果影响试验研究

颜永国; 董志良; 杨昌斌; 陈平山; 邱青长

颗粒级配对真空预压法处理吹填土效果影响试验研究 English Version

( 中交四航工程研究院有限公司，广东广州 510230)

详细信息

作者简介:
颜永国 (1979 – ) ，男，浙江台州人，工程师，主要从事软基加固研究。。

中图分类号: TU411
计量
- 文章访问数: 1035
- HTML全文浏览量: 0
- PDF下载量: 1122
出版历程
- 收稿日期: 2012-01-05
- 发布日期: 2011-11-14

Experimental study on effect of grain size distribution on improvement of dredger fill

(Engineering Technology Research Co., Ltd. of CCCC Fourth Harbor Engineering Co., Ltd., Guangzhou 510230, China)

摘要

摘要: 采用改进的真空预压试验模型对颗粒级配对吹填土加固效果的影响进行试验研究，在相同的加载条件下进行了 7 组不同颗粒级配的试样真空预压室内模型试验，分别从土体的沉降量、排水量、物理力学试验等几个方面对不同试样的加固效果进行对比分析，简述吹填土的颗粒级配对加固效果的影响。试验结果表明，采用真空预压加固吹填土，不同的颗粒级配对沉降量、排水量和加固后物理力学性质有显著影响，是影响吹填土加固效果的主要因素。试验结果对在吹填土选择合适加固方法时有一定指导意义。
- 吹填土 /
- 颗粒级配 /
- 加固效果 /
- 沉降量 /
- 排水量
Abstract: By using the improved vacuum preloading model, the effects of grain size distribution on the improvement of dredger fill are studied. Laboratory vacuum preloading tests on seven groups of samples with different grain size distributions are performed under the same loading condition. Then axial settlement, drainage flow and physical mechanics are analyzed to study the effects of the grain size distribution on the improvement of dredger fill. The results show that different grain size distributions have great influences on the axial settlement, drainage flow and the properties of soils, and the grain size distribution is a key factor to influence the improvement of the dredger fill if the vacuum preloading is adopted to improve dredger fill. This study has guiding significance for choosing the proper improvement method for the dredger fill.
- dredger fill /
- grain size distribution /
- improvement /
- settlement /
- drainage flow

HTML全文

参考文献(8)

[1]	KJILLMAN K. Consolidation of clay by means of atmosphere pressure[C]// Proceedings of a Conference on Soil Stabilization. Boston: MIT, 1952: 258 – 263.
[2]	张功新 . 真空预压加固大面积超软弱吹填淤泥土试验研究及实践 [D]. 广州 : 华南理工大学 , 2006. (ZHANG Gong-xing. Experimental study and pratice on large area super-soft reclamation silt consolidated by vacuum preloading[D]. Guangzhou: Dissertation of South China University of Technology, 2006. (in Chinese))
[3]	娄炎 . 真空排水预压法加固软土技术 [M]. 北京 : 人民交通出版社 , 2001. (LOU Yan. Technique of vacuum drainage preloading[M]. Beijing: China Communication Press, 2002. (in Chinese))
[4]	叶正强 , 李爱群 , 杨国华 , 等 . 黏性土的渗透规律性研究 [J]. 东南大学学报 , 1999, 29 (5): 121 – 125. (YE Zheng-qiang, LI Ai-qun, YANG Guo-hua, et al. Study of permeability for cohesive soil[J]. Journal of Southeast University, 1999, 29 (5): 121 – 125. (in Chinese))
[5]	叶含春 . 基于分形理论的松散介质渗透系数空间预测–以河北平原为例 [D]. 北京 : 中国地质大学 , 2000. (YE Han-chun. Prediction of hydraulic conductivity of porous media based on the fractal theory[D]. Beijing: China University of Geosciences, 2000. (in Chinese))
[6]	刘汉龙 , 李豪 , 彭劼 , 等 . 真空–堆载联合预压加固软基室内试验研究 [J]. 岩土工程学报 , 2004, 26 (1): 145 – 149. (LIU Han-long, LI Hao, PENG Jie, et al. Laboratory test on vacuum preloading combined with surcharge[J]. Chinese Journal of Geotechnical Engineering, 2004, 26 (1): 145 – 149. (in Chinese))
[7]	吴桂芬 , 高玉峰 , 魏代现 , 等 . 真空和堆载两种预压法的室内试验研究 [J]. 岩土力学 , 2005, 26 ( 增刊 ): 95 – 98. (WU Gui-fen, GAO Yu-feng, WEI Dai-xian, et al. Studyon laboratory test of vacuum and surcharge preloading[J] ． Rock and Soft Mechanics, 2005, 26 (S0): 95 – 98. (in Chinese))
[8]	张诚厚 , 王伯衍 , 曹永琅 . 真空作用面位置及排水板间距对加固效果的影响 [J]. 岩土工程学报 , 1990, 12 (1): 45 – 52. (ZHANG Cheng-hou, WANG Bo-yan, CAO Yong-lang. The influence of vacuum location and the spacing of drain well on the effect of preloading improvement[J]. Chinese Journal of Geotechnical Engineering, 1990, 12 (1): 45 – 52. (in Chinese))