预应力加固现浇空心板及宽扁梁技术

THE PRESTESSING REINFORCEMENT FOR THE PRECASTING AND NORMAL WIDE AND FLAT BEAM

由于建筑使用功能的改变,需对原大跨度钢筋混凝土现浇空心板及宽扁梁进行加固处理。利用结构层上建筑做法中管道垫层高度,采用体外无粘结预应力和叠合梁混合加固钢筋混凝土宽扁梁,采用无粘结预应力叠合板加固现浇空心板的建筑技术。

The original large span reinforced concrete hollow slabs and wide-fiat beams should be strengthened when the building function changed. Take the advantage of the pipe bed height, the technique introduced in this paper is to reinforce the wide-fiat beam by out no-conhesion prestressing and laminated slabs;and to reinforce the precasting hollow slab by using no-conhesion prestressed laminated slabs.