季冻区湿地软土固结特性与固结压力相关性的试验研究  

Test Study on the Correlation between Consolidation Characteristics and Consolidation Pressure of Wetland Soft Soil in Seasonal Frost Area

作　　者：王宏光[1] 程显东[1] 张冕[1] 田蕾蕾[1] 马强[1] 刘红军[2] 韩春鹏[1] 

机构地区：[1]东北林业大学,哈尔滨150040 [2]五邑大学,广东江门529020

出　　处：《森林工程》2010年第4期64-66,共3页Forest Engineering

基　　金：东北林业大学本科生创新性实验项目(2008054)

摘　　要：针对黑龙江省松嫩平原湿地软土的固结特性,进行压缩固结试验研究。研究表明,季冻区软土孔隙比大、含水率大、压缩性强,其物理力学性质和工程性质略优于珠江三角洲软土。随着固结压力的增大,压缩系数逐渐减小,压缩模量逐渐增大,固结压力大于200 kPa时,压缩系数变化趋势逐渐变缓,固结系数随固结压力增大逐渐减小,其变化范围为1.71～7.11×10-4 cm2/s,固结系数在固结压力超过400 kPa时趋于稳定。其研究成果可为季冻区软土工程处理提供技术支持。Aiming at the characteristics of wetland soft soil consolidation in Songnen Plain from Heilongjiang Province, compression and consolidation test study was carried out. Study showed that soft soil in seasonal frost area void ratio was large, water content was high, compression was strong, whose physical and mechanics properties and engineer/ng properties were better than the Pearl River Delta. With the consolidation pressure increasing, compression coefficient decreased and compression modulus increased gradually. When the consolidation pressure was above 200 kPa, the change trend of compression coefficient was gradually flat. With the consolidation pressure increasing, consolidation coefficient decreased gradually, the change range of which was 1.71 - 7.11 ×10^-4cm^2/. Consolidation coefficient was tending towards stability when the consolidation pressure was above 400 kPa. The research results could provide technical support for soft soil engineering treatment in seasonal frost area.

关 键 词：季冻区 湿地软土 固结系数 固结压力 

分 类 号：TU471[建筑科学—结构工程]