预应力CFRP板加固混凝土梁研究综述  

STATE-OF-THE-ART REPORT ON REINFORCED CONCRETE BEAMS STRENGTHENED WITH CFRP LAMINATES

作　　者：薛伟辰[1] 曾磊[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《工业建筑》2006年第4期12-14,共3页Industrial Construction

基　　金：国家自然科学基金项目(编号:50008012)

摘　　要：CFRP板加固混凝土梁是一种新型的加固方法,但该方法存在着CFRP板强度利用率不高、对梁正常使用性能改善不明显等问题。通过对CFRP板施加预应力,不仅可以充分利用CFRP板的强度,还能有效地改善加固梁的受力性能,进一步抑制梁的变形和裂缝的开展。目前国内外已有的研究主要包括预应力CFRP板锚具研究、预应力CFRP板加固混凝土梁试验研究、预应力CFRP板加固混凝土梁非线性有限元分析以及预应力CFRP板加固混凝土梁理论研究等4个方面。对国内外预应力CFRP板加固混凝土梁的最新研究成果进行了较为系统的综述与分析,并对将来的发展趋势进行了展望。The new method using CFRP laminates to strengthen concrete beams has several disadvantages： the strength of CFRP laminates could not be thoroughly utilized and the serviceability of strengthened concrete beams could not be significantly improved. The applied prestressing in CFRP laminates could not only make full use of the strength of the CFRP laminates but also effectively enhance the forced properties of the strengthened beams, thus preventing development of the deformations and cracks. Prescott investigations on prestressed CFRP laminates mainly focus on anchorage system, experimental and theoretical studies as well as nonlinear element analysis of strengthened concrete beams. This paper summarizes the up-to-date achievements of concrete beams strengthened with prestressed CFRP laminates. Furthermore, the future of CFRP laminates is prospected.

关 键 词：预应力CFRP板 加固混凝土梁 锚具 试验研究 有限元分析 设计理论 

分 类 号：TU378.2[建筑科学—结构工程]