施工技术 2011年7月上 54 CONSTRUCTION TECHNOLOGY 第40卷第344期 吹填淤泥次固结特性试验研究 秦现军1，李瑞玲1，张明2 (1.鹤壁职业技术学晓基建处，河南鹤壁458030； 2.河南工程学院土木工程系，河南郑州451191) [摘要]通过室内试验对吹填淤泥次固结系数随周结压力及固结历时的变化规律、次固结系数与压缩指数的关系 进行了总结分析.结果表明：①次固结系数在工程预压荷载75~125kP:内随固结压力的增加变化最显著；②在两 相邻试验时段内次固结系数减小25.7%-27.0%，受固结历时的影响十分明显；③次固结系数与压缩指数之比C/ C.=0.0255~0.0269 为沿海地区软土C /C的上限值，受压缩指数变化的影响最显著.在此基础上提出了考虑 压力影响的吹填淤泥次固结变形计算方法. [关键词]吹填淤泥；分别加载；次固结；固结压力；压缩指数 [中图分类号]TU411.5 [文献标识码]A [文章编号]1002-8498(2011)13-0054-03 Test Study on Secondary Consolidation Characteristics of Filled Hydraulic Mud Qin Xianjun' Li Ruiling' Zhang Ming2 (1.Department of Construction Hebi College of Vocation and Technology Hebi He'nan 458030 China: 2.Department of Civil Engineering He'nan Institute of Engineering Zhengzhou He'nan 451191 China) Abstract:Based on laboratory test variation of coefficient of secondary consolidation of filled hydraulic mud with consolidation load and consolidation time the relationship between coefficient of secondary consolidation and pression index are concluded and analyzed.The results show that:①coefficient of secondary consolidation is of the most significant variation with the pre-loading between 75kPa and 125kPa;②coefficient of secondary consolidation is reduced by25.7%~27.0% and it is reflected the significant influence of consolidation time;③the ratio of coefficient of secondary consolidation and pression index C./C.is 0.025 5~0.026 9 which is the upper bound value among soft clay of coastal areas in China and it is showed t...
吹填淤泥次固结特性试验研究.pdf
