钢筋混凝土梁加固方法研究

Review of Strengthening methods of Reinforced Concrete Beam

建筑物在建造和使用过程中,其结构或构件受到多重因素的作用和影响,不能完全满足安全性、使用性、耐久性的要求,有时甚至会严重危及建筑结构的安全,往往需要采用补强加固的方式来解决上述问题。详尽阐述了钢筋混凝土梁构件的传统加固方法 (包括加大截面法、外包钢加固法、粘钢加固法、预应力加固法、增设支点加固法和托梁拔柱加固法)以及纤维增强复合材料(FRP)加固方法 (包括非预应力FRP和预应力FRP加固方法),通过分析,指出预应力FRP加固方法具有更好的实际应用效果,因而是今后需重点加以研究的钢筋混凝土梁加固方法。

Structure or component of buildings is affected by multiple factors in the process of its construction and application,thus it can not fully meet the requirements of security,usability and durability,sometimes it would severely endanger the safety of the structure,therefore the way of reinforcement is often adopted to resolve the problems above.Traditional strengthening methods(including enlarging section reinforcement method,outsourcing steet reinforcement,steel-bonded reinforcement method,prestressed reinforcement method,add support rinforcement method,joisting beam and drawing column reinforcement method) and fibre reinforced polymer(FRP) methods(including non-prestressed FRP reinforcement method and prestressed FRP reinforcement method) of reinforced concrete beam components are elaborated.Through the analysis,the prestressed FRP reinforcement method for better practical application is pointed out.therefore it is necessary to focus on the research of reinforced concrete beam reinforcement method in the future.