疲劳荷载下锈损钢筋混凝土粘结性能退化试验研究  

EXPERIMENTAL STUDY ON BOND PERFORMANCE DETERIORATION BETWEEN CORRODED BARS AND CONCRETE UNDER FATIGUE LOADS

作　　者：彭修宁[1,2,3] 金良志[1] 薛建阳[4] 韦斌凝[3] 

机构地区：[1]广西电力工业勘察设计研究院博士后工作站,南宁530023 [2]西安建筑科技大学土木工程博士后流动站,西安710055 [3]广西大学土木建筑工程学院,南宁530004 [4]西安建筑科技大学土木工程学院,西安710055

出　　处：《工业建筑》2010年第2期101-104,115,共5页Industrial Construction

基　　金：中国博士后科学基金资助项目(20080440814);广西大学科学基金资助项目(DD030011)

摘　　要：钢筋与混凝土间的粘结性能是钢筋混凝土结构形成的关键,而锈蚀和疲劳荷载均可能对粘结性能造成不利影响。通过钢筋开槽内贴应变片直流电室内快速锈蚀手段对13个试件在疲劳荷载作用下锈损后钢筋与混凝土之间的粘结性能退化规律进行研究,得出了试件疲劳加载次数、钢筋锈蚀量及钢筋与混凝土滑移之间的关系,得到了钢筋粘结段内部粘结应变分布的劣化规律,分析了锈后钢筋混凝土构件疲劳粘结破坏的形态。Bond performance is the key of reinforced concrete between concrete and bars, however either corrosion or fatigue load makes bond performance deteriorate. Using a fast electric current corrosion testing of 13 bars with strain gauge placed in a machined axial cavity, the bond performance between bars and concrete under fatigue loads has been investigated, the relationship between the number of fatigue loads, corrosion amount, bond-slip of bars and concrete has been found, the degradation law of the distribution of strain in bond area of bars has also been obtained.

关 键 词：锈蚀 粘结性能 退化 

分 类 号：TU375[建筑科学—结构工程]