预应力内框架托换多层砌体结构承重墙技术

Supporting Transform Technic with Prestressed Frame for Bearing Wall of Multi-storey Masonry Structure

用预应力混凝土内框架托换建筑中的承重墙体是一种实用的建筑改造新技术。与钢或普通混凝土托换结构相比较 ,这种托换结构可以通过施加预应力形成主动受力结构 ,同时对欲拆除墙体实现卸载 ,特别是用于结构整体性能较差的多层砌体结构建筑中预制楼板下承重墙的托换时 ,具有受力合理、与原结构连接紧密、整体抗震性能和防火性能较好、安全可靠的特点。

The bearing wall of multistory masonry structure can be demolished by supporting transform with prestress frame in building. It is a new technic for old building reconstruction. Through a typical engineering case,the design and construction of this technic are introduced.