双悬臂深梁应力光弹性研究的精度分析  

THE ACCURACY ANALYSIS OF PHOTOELASTIC STUDY ON DEEP DOUBLE CANTILEVER BEAM

作　　者：伍洪泽[1] 

机构地区：[1]中南工业大学资源环境与建筑工程学院,长沙410083

出　　处：《中南工业大学学报》1997年第4期393-395,共3页Journal of Central South University of Technology(Natural Science)

摘　　要：对双悬臂深梁─—桥墩顶帽的应力光弹性试验中的模型冻结、模型粘结、模型加载、泊松比以及应力条纹对应力场的影响作了定量或定性分析，结果表明：模型冻结过程的内外温差、杠杆式加载装置大于7时的粘结材料弹模比，对应力场影响不大，但材料的泊松比、应力条纹值对应力场有较大的影响．The affecting model blocking, model binding, model loading, the Poisson ratio and stress stripe on stress field in the stress photoelastic experiment of deep double cantilever beam─the tophat of bridge pier have been quantitatively or qualitatively analysed. Results show that the inside and outside temperature difference in the model blocking process, the lever-type loading device and the elastic modulus ratio of binding material (>7) have little influence on stress field, but the Poisson ratio of material and the value of stress stripe have bigger influence on positive stress.

关 键 词：应力 条纹 悬臂深梁 模型冻结 光弹性试验 桥梁 

分 类 号：U441.5[建筑科学—桥梁与隧道工程] O348.1[交通运输工程—道路与铁道工程]