预应力CFRP布加固CRC梁的抗弯承载力计算  

Calculated on the Bending Capacity of Corroded Reinforced Concrete Beams Strengthened with Prestressed CFRP Sheets

作　　者：哈娜[1] 霍君华[1] 付深远 

机构地区：[1]辽宁省交通高等专科学校,辽宁沈阳110122 [2]沈阳中海兴业房地产开发有限公司,辽宁沈阳110004

出　　处：《辽宁省交通高等专科学校学报》2014年第6期1-4,共4页Journal of Liaoning Provincial College of Communications

摘　　要：锈蚀钢筋会引起构件承载能力下降,为了提高构件承载力保证其完成预定的使用功能,需对其进行加固处理。结合锈蚀钢筋混凝土构件和预应力CFRP布加固后构件的受力特征,在相关试验研究的基础上,运用受力平衡方程,推导了锈蚀钢筋屈服、混凝土压碎及预应力CFRP布拉断等状态下的承载力计算公式,并将理论结果与试验结果进行了对比,吻合较好,可以用于指导工程实践。Corrosion of reinforcing bars may reduce the ultimate bending capacity of members. In order to improve the ultimate bending capacity, it is necessary to strengthen treatment to ensure the members finished the intended function. Basic on the relevant experimental study, the mechanics characteristic corroded reinforced concrete and prestressed CFRP sheets strengthened members were combined. Using force equilibrium equation, the calculated formula of bending capacity under the state which is corroded bars yielding,concrete crushing, prestress CFRP sheets breaking, and etc. were deduced. The theoretical results which derived by the formula were compared to the test results. The comparisons of results are well consonant,which can be used to guide the engineering practice.

关 键 词：预应力CFRP布 锈蚀 钢筋混凝土梁 抗弯承载力 

分 类 号：TU528.041[建筑科学—建筑技术科学]