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.
出处
《工业建筑》
CSCD
北大核心
2009年第12期32-35,共4页
Industrial Construction
关键词
体外预应力
连续梁
内力重分布
应力增量
external prestressing
continuous beam
redistribution of internal force
stress increment
