中南大学学报（自然科学版）2011，Vol.42Issue(6)：1780-1785,6.
地基沉降对弹性地基梁的影响
Influence of foundation settlement on elastic foundation beam
摘要
Abstract
Considering the effect of shear deformation, Timoshenko beam theory and initial parameter method were used to analyze the settlement influences of elastic foundation beam with two fixed-edges and two simply-supported edges. The transcendent equation of hanging length was established. The solutions of deformations and internal forces were presented. The changing relationship between hanging length and load was studied by examples. Deflections, slopes, shear forces and moments of Bernoulli-Euler beam theory and Timoshenko beam theory were compared for locally hanged beams on Winkler foundation under distributing load. Deflections and internal forces of different settlements were compared. The results show that hanged length derived by Bernoulli-Euler beam theory is relatively large. Deflection, slope, shear force and moment calculated by Bernoulli-Euler beam theory are larger than those by Timoshenko beam theory. Shear deformation influence must be considered for the analysis of foundation settlement.关键词
弹性地基梁/剪切变形/地基沉降/初参数Key words
elastic foundation beam/ shear deformation/ foundation settlement/ initial parameter分类
数理科学引用本文复制引用
夏桂云,李传习,曾庆元..地基沉降对弹性地基梁的影响[J].中南大学学报（自然科学版）,2011,42(6):1780-1785,6.基金项目
中国博士后基金资助项目(20080441177)；长沙理工大学桥隧重点学科创新基金资助项目(2010-01) （20080441177）
