玄武岩纤维布加固损伤混凝土梁抗剪性能研究

Research on Shear Performance of Damaged Concrete Beams Strengthened with BFRP Sheet

中文关键词:玄武岩纤维布  损伤混凝土梁  抗剪承载力  挠度  荷载

英文关键词:BFRP  damaged concrete beams  shear bearing capacity  deflection  load

中文摘要:

      为了获取玄武岩纤维布加固损伤混凝土梁的抗剪性能参数，并为玄武岩纤维布加固损伤混凝土梁的设计与施工提供理论依据，通过试验分析，研究了不同剪跨比、加固量、初始荷载等情况下梁的抗剪承载力变化规律，提出了玄武岩纤维布加固损伤混凝土梁的抗剪承载力修正计算公式。试验结果表明，梁的抗剪承载力受锚固方式、初始荷载和剪跨比的影响较大，采用玄武岩纤维布加固钢筋混凝土梁后，可以有效提高梁的抗剪承载力。

英文摘要:

      In order to acquire the parameters of shear performance of RC beam strengthened with BFRP and provide theoretical gists for design and construction, shear capacity of RC beam strengthened with BFRP sheet is analyzed for different shear span ratio, number of BFRP sheet layer and pre loading program within experimental works. Revised formula is presented for calculating shear bearing capacity of RC beam strengthened with BFRP. Experimental results shows that BFRP can improve shear bearing capacity of beam, and shear bearing capacity is affected by anchoring method, initial load and shear span ratio.