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目前,多层砖混结构房屋常用的抗震加固方法是沿房屋外墙增加钢筋混凝土构造柱与圈梁,并在室内沿横墙增加钢拉杆的做法,也就是通常见到的所谓“五花大绑”的办法。这种施工方法工作量较大,外观也欠美观,有碍市容。这种现浇钢筋混凝土圈梁,多设在楼盖水平处的外墙面上,虽然对楼盖结构能起到“箍”的作用,但在构造上和预制楼板并不直接接触,中间相隔一道砖墙。因此圈梁与楼板的整体作用差。严格地说来,只是一个松散的结合。只有当楼盖发生相当大的侧向变形时才能使外加圈梁受力。因此,这样加固的楼盖(或屋盖)结构,对有效地传递和分配
At present, the commonly used method of seismic strengthening for multi-storey brick-concrete structure houses is to add reinforced concrete structural columns and ring beams along the external walls of the house, and to increase the steel tie rods along the transverse walls in the room, which is commonly seen as the so-called “five tie”. "The way. This kind of construction method has a large amount of work and the appearance is also not beautiful, which hinders the appearance of the city. This kind of cast-in-place reinforced concrete ring beams are mostly set on the outer wall surface at the level of the floor cover. Although the structure of the floor cover can act as a “hoop,” it is not directly in contact with the prefabricated floor plate. There is a brick wall in the middle. Therefore, the overall effect of the ring beam and the floor slab is poor. Strictly speaking, it is only a loose combination. Only when the floor has a considerable lateral deformation can the additional ring beam be subjected to force. Therefore, the structure of such a reinforced floor (or roof) is effectively transmitted and distributed.