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根据基坑开挖导致的土体应力特点及基坑开挖中土体的排水条件,对施工现场的原状广州软土,按与土体沉积面的不同倾角取土样进行常规三轴固结不排水剪切试验,对其各向异性性状进行了研究探讨,结果表明其各向异性导致的抗剪强度差异明显,对基坑工程设计计算及确保基坑安全稳定有一定的指导意义。
According to the characteristics of soil stress caused by the excavation of the foundation pit and the drainage conditions of the soil in the excavation of the foundation pit, the conventional triaxial consolidation was carried out on the soft ground in Guangzhou at the construction site according to different inclination angles with the sedimentary surface of the soil The results show that there is significant difference in shear strength due to anisotropy, which is of guiding significance to the design and calculation of foundation pit excavation and to ensure the safety and stability of foundation pit.