FRP约束RC圆柱抗震性能参数研究及受剪承载力计算  

Parameter Study and Seismic Shear Strength of FRP-confined Reinforced Concrete Circular Columns

作　　者：顾冬生[1] 吴刚[2] 吴智深[3] 郭正兴[2] 

机构地区：[1]江南大学土木工程学院,江苏无锡214122 [2]东南大学土木工程学院,江苏南京210096 [3]东南大学城市工程科学国际研究中心,江苏南京210096

出　　处：《工程抗震与加固改造》2007年第6期67-72,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金资助项目(50608015);江苏省自然科学基金项目(BK2006554);青海省科技厅重点攻关项目(2005G155)

摘　　要：大量试验验证了FRP约束混凝土圆柱能显著提高其抗震性能,但对其性能及相关设计的定量分析还不够系统。本文主要讨论了FRP种类和用量对加固效果的影响,研究结果表明,FRP约束可以有效地提高混凝土圆柱的抗震性能。同时,本文还提出了FRP加固钢筋混凝土圆柱承载力的计算思路和方法,建立了受剪承载力的计算和侧向位移的关系。There have been a lot of experimental programs conducted to study the effectiveness of FRP to strength the seismic performance of existing circular reinforce concrete （RC） columns, but there still exist some problems in establishing the analytical theory quantificationally. In this paper, the influence of the type and amount of FRP used to the retrofitting performance is studied. The retrofitted columns are developed significantly improving the hysteretic responses with stable hysteresis loops. Method for retrofit design using prefabricated composite sheets is also provided and validated by the test results. Particular emphasis is placed on models capable of representing the interaction between flexural ductility and shear strength of FRP retrofitted columns.

关 键 词：FRP 圆柱 抗震加固 延性 承载力 

分 类 号：TU375.3[建筑科学—结构工程]