体外预应力加固钢筋混凝土连续梁的试验研究  

EXPERIMENTAL STUDY ON THE FLEXURAL BEHAVIOR OF REINFORCED CONCRETE CONTINUOUS BEAMS STRENGTHENED WITH EXTERNAL PRESTRESSING

作　　者：王云飞 孟少平[2] 刘晓艳[2] 

机构地区：[1]南京市建筑设计研究院有限责任公司,南京210005 [2]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

出　　处：《工业建筑》2009年第12期32-35,共4页Industrial Construction

摘　　要：通过6片体外预应力加固钢筋混凝土连续梁试验研究,以内支座相对受压区高度和预应力配筋指标为参数,得到了加固梁的变形和体外筋应力增长规律,加固梁的跨中变形与体外筋的应力增长主要分为三个阶段,且二者具有较好的相关性,加固梁在极限荷载下的内力重分布比较充分。With a view to different height of compression region and different prestress reinforcement index, 6 reinforced concrete continuous beams strengthened with external prestressed tendons are investigated, including midspan deflection, stress increment of external tendons, midspan deflection and stress increment of external tendons have a good correlative relationship, increasing in 3 stages. Internal force redistribution forms fully under ultimate loads.

关 键 词：体外预应力 连续梁 内力重分布 应力增量 

分 类 号：TU746.3[建筑科学—建筑技术科学] TU375.1