Shear Load Transfer Characteristics of Drilled Shafts Socketed in Rocks

详细信息    查看全文

• 作者：Sangseom Jeong ; Sangyong Ahn and Hoonil Seol
• 关键词：Rock ; socketed drilled shaft ; Load transfer function ; Constant normal stiffness direct shear test ; Borehole roughness ; Coupled soil resistance ; Pile– ; rock interface
• 刊名：Rock Mechanics and Rock Engineering
• 出版年：2010
• 出版时间：February, 2010
• 年：2010
• 卷：43
• 期：1
• 页码：41-54
• 全文大小：1,015.3 KB

文摘

This paper presents a shear load transfer function and an analytical method for estimating the load transfer characteristics of rock-socketed drilled shafts subjected to axial loads. A shear load transfer (f–w) function of rock-socketed drilled shafts is proposed based on the constant normal stiffness (CNS) direct shear tests. It is presented in terms of the borehole roughness and the geological strength index (GSI) so that the structural discontinuities and the surface conditions of the rock mass can be considered. An analytical method that takes into account the coupled soil resistance effects is proposed using a modified Mindlin’s point load solution. Through comparisons with load test results, the proposed methodology is in good agreement with the general trend observed in in situ measurements and represents an improvement in the prediction of the shear behavior of rock-socketed drilled shafts.