海口市东海岸软土抗剪强度随固结度变化规律研究  

Soft Soil Shear Strength at East Coast of Haikou City Changes with Degree of Consolidation

作　　者：戚玉红[1] 田伟[2] 杨鸿钧[1] 李建军[1] 

机构地区：[1]中交第一航务工程勘察设计院有限公司,天津300222 [2]中石油工程技术研究院,天津300451

出　　处：《港工技术》2016年第3期98-100,共3页Port Engineering Technology

摘　　要：通过对海口市东海岸某建设工程的软土进行三轴固结不排水剪试验,本文探讨了在不同固结度下软土抗剪强度的变化规律。结果表明:随着固结度的增大,软土的内聚力呈现出先减小后增大再减小的趋势,对抗剪强度增长作用不大;随着固结度的增大,软土的内摩擦角呈现出持续增大的趋势,当固结度>75%时增加幅度明显降低;随着固结度的增大,软土的抗剪强度呈现出持续增长的趋势,当固结度>75%时增幅明显降低。Based on the consolidated-undrained triaxial shear test of the soft soil sampled from one construction site at the east coast of Haikou city, the change rule of soft soil shear strength is discussed under the condition of different consolidation degrees. The results show that the cohesive force of soft soil firstly decreases, then increases, and decreases finally with the increasing of consolidation degree. But the cohesive force makes a little contribution to the shear strength. The internal friction angle to increases continuously with the increasing of consolidation degree. But the increment of to values becomes insignificantly when the consolidation degree exceeds 75%. The shear strength of soft soil increases insistently with the increasing of consolidation degree, but the increment decreases significantly when the degree of consolidation exceeds 75 %.

关 键 词：软土 抗剪强度 固结度 三轴固结不排水试验 

分 类 号：TU411.7[建筑科学—岩土工程]