预应力钢斜撑-外包钢加固混凝土框架结构  

Reinforcement of Concrete Frame Structure with Prestressed Steel Brace and Bonding Profile Steel

作　　者：姚卫国[1] 凌海 姚正治[3] 陈强[3] 赵启明[3] 

机构地区：[1]清华大学建筑设计研究院,100084 [2]中国蓝星集团山西合成橡胶集团公司,037005 [3]清华大学土建工程承包总公司,100084

出　　处：《建筑结构》2005年第7期61-62,共2页Building Structure

摘　　要：结合某钢厂烧结厂房的加固,介绍预加应力钢斜撑在混凝土框架结构加固中的应用。通过高强螺栓对该斜撑施加预加应力,可在厂房设备正常运转时对待加固的混凝土框架梁进行部分卸载,并减小其计算跨度,达到较好的加固效果。通过预加应力钢斜撑的顶升卸载可缩小总体加固范围,取得良好的经济效益。An application of prestressed skew steel brace used in the reinforcement of concrete frame structures is introduced with an instance of a steelworks＇ reinforcement project. Prestressing forces are added to the skew brace with high strength bolts. With the upward force provided by the prestressed brace, the frame beams that need to be strengthened could be partially unloaded when the equipments in the workshop are still running. As a result, good reinforcement effect can be achieved, and the scale of the reinforcement could be minimized.

关 键 词：预应力钢斜撑-外包钢 加固技术 混凝土结构 框架结构 顶升卸载 

分 类 号：TU37[建筑科学—结构工程]