Research and application of vertical homogenized additional stress under pile tip plane
Wang Tao1,2,3,4 Chu Zhuo1,2,3,4 Liu Jinli1,2,3,4 Wang Xu1,2,3,4
1. State Key Laboratory of Building Safety and Built Environment, Beijing 100013, China;
2. China Academy of Building Research Foundation Institute, Beijing 100013, China；
3. Beijing Engineering Technology Research Center of Foundation and City Underground Space Development and Utilization,Beijing 100013, China；
4. National Engineering Research Center of Building Technology,Beijing 100013, China
Abstract：Considering the Mindlin stress solution additional stress field and the deformation distribution characteristics of pile group foundation, and the difference effect of additional stress in the projection area of pile, this paper presents a new method for calculating the homogenized additional stress of pile group foundation. According to the conceptualization model for specific shaft resistance distribution, the foundation pile homogenization stress coefficient table is given under the condition of different ratio of length to diameter and different pile spacing, thus an effective simple method is provided for the additional stress calculation in settlement analysis of group piles foundation. The proposed calculation method is verified by some engineering examples. The analysis results by the equivalent calculation method are compared with those by the Boussinesq deep foundation calculation method and equivalent calculation method. The analysis results agree well with each other, which proves the effectiveness of the proposed method.
王涛 褚卓 刘金砺 王旭. 基桩桩端平面下竖向均化附加应力研究及应用[J]. 土木工程学报, 2021, 54(9): 96-104.
Wang Tao Chu Zhuo Liu Jinli Wang Xu. Research and application of vertical homogenized additional stress under pile tip plane. 土木工程学报, 2021, 54(9): 96-104.
