广州软土各向异性直剪试验研究

Direct shear test study of anisotropism to Guangzhou soft clay

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,进行了固结快剪试验,对广州软土各向异性性状进行了研究和探讨。试验结果表明,广州软土各向异性导致的抗剪强度差异明显,其结果对基坑工程的设计计算及基坑的安全稳定有很大指导意义。

Following the earth stress characteristic and drainage condition in foundation excavation, selecting original soft clay according to earth aggradations face and different obliquity in construction spot of Guangzhou, and doing consolidated quick direct shear test, we had studied the Guangzhou soft clay of its anisotropism. The test shows that Guangzhou soft clay is distinctness in shear strength. The distinctness is cause by anisotropism. The test result has great help to foundation project designed and foundation pit safety and stabilization.