体外预应力加固配筋混凝土梁的变形控制  

DEFLECTION CONTROL OF REINFORCED CONCRETE BEAMS STRENGTHENED WITH EXTERNAL TENDONS

作　　者：孟少平[1] 王云飞 

机构地区：[1]东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096 [2]南京市建筑设计研究院有限责任公司,南京210005

出　　处：《工业建筑》2009年第12期29-31,共3页Industrial Construction

摘　　要：采用等效荷载模拟对体外预应力加固配筋混凝土梁进行使用性能分析,随荷载的增加,体外预应力的等效荷载也相应增大。根据受弯构件极限荷载下体外预应力增量,建议使用荷载下相应的预应力增量,在此基础上即可按既有的变形计算方法分析加固构件的变形。For analysis of serviceability behavior of reinforced concrete beams strengthened with external tendons, external prestressing effects can be modeled as equivalent loads varying with imposed external loads. Formulas of stress increments of external tendons were proposed for serviceability state based on those for capacity ultimate state, and thus eurrent deflection calculation methods can be used.

关 键 词：体外预应力 加固 变形控制 

分 类 号：TU375.1[建筑科学—结构工程] TU746.3