加大截面法加固受弯构件的方法及其受力性能研究

Enlarging section method of flexural member reinforced methods and mechanical properties

针对加固改造中提高和改进加大截面法加固受弯构件新旧混凝土结合面的连接方法及受力性能,采用植筋技术设计了4个试件。通过静力加载试验,对新旧混凝土结合面粘结力的受力性能、各试件的P(荷载)—Δ(变形)关系曲线的研究,并结合ANSYS软件对构件进行有限元分析,得出改进附加植筋的布置方式,显著提高受弯构件结合面连接方法及其受力性能,延缓结合面裂缝发开展,可供实际加固改造工程的设计及施工参考。

Aiming at improving and enlarging section method in reinforcement and flexural member reinforced concrete and the connection between the old and the new method and the stress performance of planting- bar technique was adopted to design the four specimens. By the static load test,the stress of the cohesive force of the old and new concrete surface performance,all specimens of P（ load）- Δ（ deformation） relation curve of the research,and combined with ANSYS software of finite element analysis was carried out on the artifacts,bar and improve the additional arrangement,significantly improve the flexural member in combination with surface connection methods and mechanical properties,delay combined with surface cracks in the hair,can be used for reference in the engineering design and construction of actual reinforcement and reconstruction.