无粘结部分预应力混凝土柱复位性能的试验研究  

Experimental Research on Re-centering Behavior of Unbonded Partially Prestressed Concrete Columns

作　　者：罗海艳[1] 李琪 王振波[1] 王金东 

机构地区：[1]宿迁学院建筑工程系,223800 [2]扬州大学,225009 [3]宿迁骆马湖运输管理处,223000

出　　处：《混凝土与水泥制品》2013年第7期44-48,共5页China Concrete and Cement Products

基　　金：住房和城乡建设部2008科学技术项目(2008-k1-11);宿迁学院科研基金资助项目(2012ky23)

摘　　要：为了探索配置无粘结部分预应力钢筋的混凝土柱在震后的复位性能,进行了4个无粘结部分预应力混凝土柱试件的低周反复荷载试验,其中3个试件配置了无粘结部分预应力钢筋,另外1个试件为不加预应力钢筋的对比试件。试验结果表明,无粘结部分预应力混凝土柱相比较于普通钢筋混凝土柱的滞回耗能能力相对较差,但震后残余变形较小,表现出了良好的复位性能;预应力度水平对无粘结部分预应力混凝土柱的残余变形、复位能力、承载力、延性和滞回性能等特性有重要的影响。In order to develop the re-centering behavior of unbonded partially prestressed steel concrete columns af- ter the earthquake, the low-cycle repeated loading experiment of four unbonded partially prestressed concrete columns is carried out, in which three concrete columns are configured with unbonded partially prestressed steel, while other one is without prestressed steel. The test results show that compared with common reinforced concrete columns, the hysteretic energy dissipation capacity of unbonded partially prestressed steel concrete columns is worse, but the seismic residual de- formation is smaller, which shows a better re-centering behavior. The prestressed degrees of unbonded partially pre- stressed concrete columns have an important influence on the properties of residual deformation, re-centering behavior, loading stress, ductility and hysteretic energy dissipation.

关 键 词：无粘结部分预应力 低周反复荷载试验 复位性能 预应力度水平 

分 类 号：TU525[建筑科学—建筑技术科学]