碳纤维布加固预应力空心板刚度试验与计算  

Experimental Research and Calculation of Sectional Stiffness of Pre-stressed RC Hollow Core Slab Strengthened by CFRP

作　　者：闫长旺[1,2] 刘曙光[1] 王刚[2] 王猛[1] 王玉清[1] 

机构地区：[1]内蒙古工业大学矿业学院,呼和浩特010062 [2]大连理工大学港口和近海工程国家重点实验室,大连116024

出　　处：《武汉理工大学学报》2008年第11期103-107,共5页Journal of Wuhan University of Technology

基　　金：教育部创新团队资助计划(IRT0518);内蒙古工业大学重点基金项目(ZD200702)

摘　　要：对7块实际尺寸的预应力混凝土空心板粘贴碳纤维布加固后,在近似均布荷载作用下进行刚度试验研究,分析了加固后试件截面刚度的变化规律,以及碳纤维布不同粘贴方式、不同粘贴数量对刚度变化的影响。并在试验基础上,应用刚度解析方法,得出刚度简化计算公式,进行了刚度计算值与试验值的对比分析。结果表明,碳纤维布加固后,试件刚度提高程度不显著,刚度计算公式计算值与试验值吻合较好,可为工程应用提供参考。Seven actual-dimensioned pre-stressed RC hollow core slabs strengthened by carbon fiber reinforced plastics （CFRP） are tested under the uniformed load to study the law of change in sectional stiffness, and the influence of bonding modes and strengthening quantities is analyzed. On the basis of experimental researches, a simple formula is established by means of calculation, for calculating the sectional stiffness of pre-stressed RC hollow core slabs strengthened by CFRP. The results show the improvement on sectional stiffness of pre-stressed RC hollow core slabs strengthened by CFRP is not obvious, and the theoretic calculation results are consistent with experimental results, which can provide reference for engineering application.

关 键 词：碳纤维布 预应力混凝土空心板 加固 刚度 

分 类 号：TU317.2[建筑科学—结构工程] TU378.5