软土静力触探与十字板剪切相关性研究

THE CORRELATION OF CONE PENETRATION TEST AND VANE SHEARING TEST ON SOFT SOIL

福州滨海新城软土发育,为获取软土原位参数,并节省勘察费用以及项目工期,利用现场十字板剪切试验与静力触探试验,建立了不排水抗剪强度指标C与比贯入阻力P线性回归方程C=0.0343P+14.635,并通过工程实例数据对比,证明了该线性方程在滨海新城地区适用性。因此,基于C=0.0343P+14.635线性回归方程,在滨海新城区域内建设项目地质勘察工作时,均可通过静力触探测试获得软土不排水抗剪强度指标C。

Soft soil is widely spread in Fuzhou Binhai New Town.In-situ parameters is helpful to save the surveyors cost and shorten the construction period.The data of undrained shear strength and specific penetration resistance was obtained from vane shearing test and cone penetration test.Based on which,the linear fitting equation is estab?lished,which is C=0.0343P+14.635.By the contrast to the data from engineering projects,the equation is well ap?plied to practice,which could be applied to get the undrained shear strength Cwith the method of cone penetration test on the geotechnical projects in Fuzhou Binhai New Town.