岩土力学2018，Vol.39Issue(4)：1271-1280,10.DOI:10.16285/j.rsm.2016.1118
考虑坡度效应的水平受荷桩应变楔计算方法
A method for calculating laterally loaded pile using strain wedge model considering slope effect
摘要
Abstract
Because of the slope effect,conventional methods are not applicable to calculate the deformation of laterally loaded piles in the slope.The failure test of laterally loaded pile in slope is carried out to determine the failure mode.The soil wedge is divided into oblique elements along the direction of the slope.Strain wedge model considering the effect of slope is proposed.Key parameters,strain wedge depth and soil strain of strain wedge,are obtained by iteratively solving equations of pile-soil interaction using finite bar element method.When the difference between the ground displacement of the pile and the ground displacement of strain wedge model is less than a permissible value,the ground displacement and internal force of pile obtained through the finite bar element method are the final answer.By comparing the test data and results of the proposed method,the rationality of the proposed method is verified.Finally,the ratio of the depth of damaged soil and the slope is defined as the scope of slope effect,and the influence factors are compared and analyzed.Results show that,the scope of slope effect is related to the strength parameters of soil and the size of pile,it decreases with the increase of pile diameter and soil strength.关键词
陡坡桩/应变楔/弹性地基梁/水平受荷桩Key words
piles in steep slope/strain wedge model/beams on elastic foundation/laterally loaded pile分类
建筑与水利引用本文复制引用
杨明辉,冯超博,赵明华,罗宏..考虑坡度效应的水平受荷桩应变楔计算方法[J].岩土力学,2018,39(4):1271-1280,10.基金项目
国家自然科学基金(No 51278184,No.51678230) （No 51278184,No.51678230）
教育部新世纪优秀人才支持计划(No.NCET-13-194) （No.NCET-13-194）
湖南大学青年教师成长资助项目.This work was supported by the National Natural Science Foundation of China (51278184,51678230),the Program for New Century Excellent Talents in University of Ministry of Education of China (NCET-13-194) and the Excellent Young Teachers Program of Hunan University. （51278184,51678230）
