碳纤维布补强压力管道试验研究及有限元分析  

Experimental study and finite element analysis of steel penstocks as reinforced by CFRP

作　　者：胡小梅[1] 王汝恒[1] 贾彬[1] 张志伟[1] 

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010

出　　处：《四川建筑科学研究》2015年第2期91-95,共5页Sichuan Building Science

基　　金：国家自然科学基金项目(51408513)

摘　　要：在粘贴不同厚度的碳纤维布(CFRP)的工况下来测定管道的环向应变与内水压力之间的变化规律,以此试验数据与ANSYS数值模拟值进行比较,可知模拟值和试验结果吻合得较好。通过建立有限元模型分析纤维复合材料的弹性模量、管道壁厚、管道直径对管道屈服时承压能力的影响,结果表明:高模量碳纤维加固的管道达到屈服强度时管内可施加的压力最大;管道外径的增大对粘贴了碳纤维布的管道屈服时内水压力值提高比例并无影响,而随着管道壁厚的增加,提高比例却依次降低。为碳纤维布修复补强大型输送管道的设计与施工提供试验基础依据。In different layers of CFRP conditions, the purpose of measuring the changing rules between strain and internal water pressure and making a summary is compared with the ANSYS numerical simulation values and results show that the simulation values and experiment results fit better. By establishing finite element model to analyze the elastic modulus of fiber composite materials, pipe wall thickness, pipe diameter and the influence of the bearing capacity when the steel penstocks to yield, the results show that the steel penstocks can be the biggest pressure when high modulus carbon fiber reinforced steel yield strength. The improving proportion of the internal water pressure value does not change with the increase of pipe diameter to paste the steel yield of CFRP. Improvement of the proportion is lower in turn with the increase of pipe wall thickness. These results provide experimental basis and theoretical basis for CFRP repair reinforcement design and construction of large steel penstocks.

关 键 词：压力管道 静水压试验 碳纤维布 补强影响因素 

分 类 号：TU398.9[建筑科学—结构工程]