采用预应力钢梁叠合加固大跨度混凝土梁的工程实例  

An Engineering Example of Reinforced Concrete Component Strengthened by Prestressed Steel Girder

作　　者：陈劲[1] 韩俊[2] 杜钢民 

机构地区：[1]浙江省建筑设计研究院,杭州310006 [2]浙江大学建筑设计研究院,杭州310028

出　　处：《结构工程师》2016年第5期159-165,共7页Structural Engineers

基　　金：浙江省住房和城乡建设厅建设科研项目(2016K16)

摘　　要：杭州某多层混凝土框架结构房屋改造,由于柱的拔除及增加屋面绿化覆土,屋面梁变为大跨度重荷载梁,加固设计时采用预应力钢梁叠合加固混凝土梁这一新型方法,通过数值模拟分析,并对比施工监测数据,验证了该方案的可操作性和有效性。为空间受限条件下对结构梁进行加固提供了有效的方法和技术,对类似混凝土构件的加固具有参考价值。Because of drawing column and the earth covered gallery roof when strengthened a concrete structure building in Hangzhou,a roof beam became a large span beam with heavy load. A new reinforcement method which used a pre-stressed steel girder to strengthen a concrete beam is designed and used in this project. It is proved effective through theoretical arithmetic,finite element analysis,and comparing construction monitoring data. It provides an effective reinforcement method for the strengthening building with limited space condition,guiding significance for the future similar concrete reinforcement.

关 键 词：组合加固 叠合钢梁 数值模拟 预应力结构 

分 类 号：TU37[建筑科学—结构工程]