体外预应力加固混凝土双向板的试验研究

Experimental research on the RC two-way slabs strengthened with the one-way external prestressing method

体外预应力加固技术已广泛应用于RC梁的加固工程中。文章进行了单向张拉体外预应力钢筋加固RC双向板的试验和理论研究,探讨了体外预应力对双向板承载能力工作性能的影响,分析说明了体外预应力钢筋在双向板的中间板带“集中布置”时的加固效果较好。

The strengthening technique by use of the external prestressing method has been widely used in reinforced concrete（RC） beams. In this paper, experimental research on the two-way slabs strengthened with the external prestressing method is carried out. The bearing capacity and working performance of the strengthened slabs are analyzed, and the concentrated-laying way is proved to be the most useful one for external prestressing tendons .