Elastic solutions for partially embedded single piles subjected to simultaneous axial and lateral loading
来源期刊：中南大学学报(英文版)2014年第11期
论文作者：ZHANG Lei(张磊) GONG Xiao-nan(龚晓南) 俞建霖
文章页码：4330 - 4337
Key words：pile-soil interaction; simultaneous axial and lateral loads; difference method; elastic modulus; displacement
Abstract: In order to improve the design level of partially embedded single piles under simultaneous axial and lateral loads, the differential solutions were deduced, in which the soil was treated as an ideal, elastic, homogeneous, semi-infinite isotropic medium. A comparison was made between model test results and the obtained solutions to show their validity. The calculation results indicate that the horizontal displacement and bending moment of the pile increase with increases of the axial and lateral loads. The maximum horizontal displacement and bending moment decrease by 37.9% and 13.9%, respectively, when the elastic modulus of soil increases from 4 MPa to 20 MPa. The Poisson ratio of soil plays a marginal role in pile responses. There is a critical pile length under the ground, beyond which the pile behaves as though it was infinitely long. The presented solutions can make allowance for the continuous nature of soil, and if condition permits, they can approach exact ones.
ZHANG Lei(张磊)1, GONG Xiao-nan(龚晓南)2, YU Jian-lin(俞建霖)2
(1. School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;
2. Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education (Zhejiang University), Hangzhou 310058, China)
Abstract:In order to improve the design level of partially embedded single piles under simultaneous axial and lateral loads, the differential solutions were deduced, in which the soil was treated as an ideal, elastic, homogeneous, semi-infinite isotropic medium. A comparison was made between model test results and the obtained solutions to show their validity. The calculation results indicate that the horizontal displacement and bending moment of the pile increase with increases of the axial and lateral loads. The maximum horizontal displacement and bending moment decrease by 37.9% and 13.9%, respectively, when the elastic modulus of soil increases from 4 MPa to 20 MPa. The Poisson ratio of soil plays a marginal role in pile responses. There is a critical pile length under the ground, beyond which the pile behaves as though it was infinitely long. The presented solutions can make allowance for the continuous nature of soil, and if condition permits, they can approach exact ones.
Key words:pile-soil interaction; simultaneous axial and lateral loads; difference method; elastic modulus; displacement
