粘钢加固混凝土梁界面端热应力的数值分析  

Numerical analysis of thermal stresses near interface edges of concrete beam strengthened with bonded steel plate

作　　者：熊伟[1] 刘一华[1] 

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2011年第4期557-560,共4页Journal of Hefei University of Technology：Natural Science

基　　金：安徽省自然科学基金资助项目(090414157)

摘　　要：文章基于有限元方法,对黏贴钢板加固混凝土梁界面端附近的热应力进行了数值分析,探讨了钢板端部的结合角、钢板的长度和厚度对界面端附近热应力的影响。结果表明:粘钢加固混凝土梁界面端附近的热应力具有ln3r型的奇异性;减小钢板端部的结合角及其厚度能有效地降低界面端附近的热应力大小;钢板的长度对界面端附近的热应力几乎无影响。Based on the finite element method,thermal stresses near interface edges of the concrete beam strengthened with bonded steel plate are analyzed numerically.The influence of the bonded angle at the end and the length and thickness of the steel plate on the thermal stresses near interface edges is discussed.The results show that the thermal stresses near interface edges possess the singularity of ln3r type.The decrease of the bonded angle and thickness of the steel plate can effectively reduce the numerical value of the radial thermal stress near interface edges,and the length of the steel plate has little influence on the thermal stress near interface edges.

关 键 词：粘钢 加固 界面端 热应力 有限元法 

分 类 号：O346.1[理学—固体力学]