型钢加固预应力空心板的力学问题分析与应用

Mechanical analysis and application of strengthened prestressed hollow concrete slab by steel beam

预应力空心板作为水平承重构件在建筑上得到了广泛的应用,随着时间的推移迫切需要对老化建筑的预应力空心板进行加固处理。本研究通过力学分析、挠度控制分析和工程实例,对不同的预应力空心板加固方法进行了比较。结果表明:采用粘贴型钢梁对预应力空心板进行加固,结构的挠度达到L/400,满足规范要求,且此方法施工简便,能够提高承载力。

Prestressed hollow as the level of load-bearing elements in the architecture has been widely used.Over time,the prestressed hollow aging slab needs urgent reinforcement construction.In this study,compared are various reinforcements through mechanical analysis,control analysis and engineering examples.The results show that the paste on prestressed hollow steel beam reinforcement,the structure of the deflection reaching L/400,meet regulatory requirements,and this method is simple in construction,which heightens bearing capacity.