中美FRP受弯加固设计规范比较  

Design code comparison of RC beam strengthened by FRP of China and American

作　　者：曹立金[1] 陆洲导[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《四川建筑科学研究》2009年第2期94-96,共3页Sichuan Building Science

基　　金：国家自然科学基金项目资助(50578126)

摘　　要：根据美国ACI-440委员会的FRP加固设计指南,主要介绍了本指南中FRP加固混凝土梁的正截面承载力的计算原理,包括基本假定、破坏形态、FRP初始应变、加固后截面的受弯承载力计算公式、承载能力极限状态时的钢筋、FRP的应力等。并与中国《混凝土结构加固设计规范》中的计算原理进行对比,阐述了两者存在的异同点。According to the guidance on the use of FRP system for strengthening concrete structures reported by ACI committee 440 ,this paper presents the design principles of FRP flexural strengthening for concrete beam in the guidance, including general assumptions, failure modes of an FRP-strengthened section, existing strain of FRP, the equation of the nominal flexural capacity, the stress level in the steel and FRP reinforcement at the ultimate strength state. Besides the design principles in the guidance and Chinese design code for strengthening concrete structures are compared and the difference is also given in this paper.

关 键 词：纤维复合材 钢筋混凝土 梁 破坏形态 承载力 

分 类 号：TU375.1[建筑科学—结构工程]