摘要
碳纤维布加固混凝土结构是一种新型结构加固方法.粘贴碳纤维布是提高混凝土梁疲劳性能的有效方法,可用于延长损伤混凝土结构的使用寿命.根据平截面假定和受压区应力图形为三角形等假设,采用等效惯性矩法提出了与普通混凝土梁受弯疲劳验算类似的碳纤维布加固混凝土梁的正截面疲劳验算方法,并通过一个试验实例来加以论证.通过与试验结果的比较,该算法偏于安全,在工程应用范围内是合适的,为工程设计提供了设计依据.同时,提出了CFRP加固钢筋混凝土梁的一种正截面疲劳刚度的验算方法.
The concrete structure strengthened by carbon fiber reinforced plastic sheet（CFS） is a new retrofit method in the field of civil engineering. The CFRP sheet is effective for the improvement of fatigue performance of RC beams. According to some assumption, the calculation of flexure in strengthened beams which are under repeated loads can be performed in a similar way that for conventional RC elements. Moreover,they are illustrated a real case. Through comparison with the results of experiment, the calculate way is relatively safe,which is suitable to the engineering application,provided the design basis for engineering design.
出处
《兰州交通大学学报》
CAS
2009年第3期32-35,共4页
Journal of Lanzhou Jiaotong University
基金
甘肃省高等学校研究生导师科研项目计划资助(0504-04)
