喷射玻璃纤维加固带窗洞无筋砌体的试验研究
首发时间:2010-10-15
摘要:通过对3片带窗洞无筋砌体墙试件(一片用碳纤维布加固,一片采用喷射玻璃纤维加固,另一片为对比试件)进行水平低周往复加载试验,研究砌体墙在水平荷载作用下的抗震性能。通过对比分析,得出不同加固方案的加固效果及加固前后墙体的受力变形特性。试验表明,采用喷射玻璃纤维聚合物(SGFRP)加固后的砌体墙,其开裂荷载、极限荷载、极限位移和延性等抗震性能均明显提高;将SGFRP加固与CFRP加固效果对比后发现,前者加固效果明显较好。因而,采用SGFRP加固砌体墙体不失为一种有效可行的方法。
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Experimental study on masonry walls with window-opening strengthened with SGFRP
Abstract:Three specimens of the masonry walls with opening instead of reinforcing steel bar (one was reinforced by carbon fiber trips, one was reinforced by SGFRP, the other was plain) were tested under low-frequency cyclic lateral loading to study the walls' seismic capacity under horizontal loading. By means of relative analysis, the reinforcing effects of different reinforcements and the walls' properties of stress and deformation were studied. It is found that the masonry wall has bigger crazing loading, utmost limit loading, utmost limit displacement and ductility after strengthened by Sprayed Glass Fiber-reinforced Polymer Composites (SGFRP). Besides, the reinforcing effect of the wall strengthened with SGFRP is better than the one' with CFRP trips . All the results show that SGFRP-strengthening-method is one of effective methods to strengthen masonry walls with openings.
Keywords: Masonry walls with opening SGFRP Strengthening Experimental study
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No.4387631544604128****
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