CAJ | 학술논문

对武汉长江Ⅰ级阶地多个典型基坑工程软土进行静力触探试验以及各种试验条件下的抗剪强度试验，通过500多组试验数据分析了Ps值与抗剪强度指标之间的相关性，得到了回归拟合曲线方程。结果表明，武汉长江Ⅰ级阶地软土抗剪强度指标与Ps值具有较好的相关性。利用Ps值根据拟合曲线方程计算各种试验条件下的抗剪强度指标，同时使用有限元方法建立深基坑三维数值分析模型，通过支护桩水平位移模拟值与实测值的对比分析，得出使用三轴固结不排水抗剪强度指标更符合实测结果。所建立的回归拟合曲线方程为武汉长江Ⅰ级阶地软土抗剪强度指标的获取提供了一个简单易行的方法。
대무한장강Ⅰ급계지다개전형기갱공정연토진행정력촉탐시험이급각충시험조건하적항전강도시험，통과500다조시험수거분석료Ps치여항전강도지표지간적상관성，득도료회귀의합곡선방정。결과표명，무한장강Ⅰ급계지연토항전강도지표여Ps치구유교호적상관성。이용Ps치근거의합곡선방정계산각충시험조건하적항전강도지표，동시사용유한원방법건립심기갱삼유수치분석모형，통과지호장수평위이모의치여실측치적대비분석，득출사용삼축고결불배수항전강도지표경부합실측결과。소건립적회귀의합곡선방정위무한장강Ⅰ급계지연토항전강도지표적획취제공료일개간단역행적방법。
A static cone penetration test and a shear strength test of soft soil at some typical foundation pits in Wuhan Yangtze River level-I terrace are carried out to analyze relevance between Ps value and shear strength index through more than 500 groups of test data, which led to the regression fitting curve equation. The result shows:there exists good correlation between Ps value and shear strength index of soft soil in Wuhan Yangtze River level-I terrace. The shear strength index under different test conditions by Ps value is calculated according to the regression fitting curve equation. Based on finite element method, a 3D nu-merical analytic model for deep foundation pit is established, through which the simulation values and the measured values of hor-izontal displacement of the supporting pile are compared and analyzed. It is concluded that three axis consolidation un-drained shear strength index is more in line with the actual measured results. The regression fitting curve equation can provide a simple and easy method for obtaining shear strength index of soft soil in Wuhan Yangtze River level-I terrace.