碳纤维加固单层双跨混凝土框架结构抗震性能试验研究
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摘要
为了研究碳纤维(CFRP)加固混凝土框架的抗震性能,设计了两榀单层两跨框架结构,其中一榀未加固,另一榀采用碳纤维加固结构柱端。对两结构进行了抗震加载试验,分析并对比了两结构的破坏特点、承载能力等抗震性能。结果表明:碳纤维加固能够明显提高结构的承载能力、变形能力和耗能能力,并能够使结构由"强梁弱柱"型的破坏机制转变为"强柱弱梁"型的破坏机制。
In order to study the seismic performance of concrete frame structure strengthened with carbon fiber reinforced polymer(CFRP), two single-story and double-span frame structures were designed; one was not strengthened, and the other was strengthened with CFRP at the end of columns. The seismic loading tests of the two structures were carried out, and the damage characteristics and bearing capacity of the two structures were analyzed and compared. The results show that the bearing capacity, the deformation capacity and energy dissipation capacity of the CFRP strengthened structure are improved, and the structure failure mechanism of "strong beam weak column" is changed into the failure mechanism of "strong column weak beam" by CFRP strengthening.
In order to study the seismic performance of concrete frame structure strengthened with carbon fiber reinforced polymer(CFRP), two single-story and double-span frame structures were designed; one was not strengthened, and the other was strengthened with CFRP at the end of columns. The seismic loading tests of the two structures were carried out, and the damage characteristics and bearing capacity of the two structures were analyzed and compared. The results show that the bearing capacity, the deformation capacity and energy dissipation capacity of the CFRP strengthened structure are improved, and the structure failure mechanism of "strong beam weak column" is changed into the failure mechanism of "strong column weak beam" by CFRP strengthening.
引文
[1]璩家平,璩继立,付春兰,等.碳纤维布在加固混凝土框架梁中的应用[J].工程抗震与加固改造,2010,32(3):104-106.
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[4]陈红秋,蒋凤昌,周桂香,等.CFRP加固锈蚀钢筋混凝土柱承载力试验研究[J].建筑技术,2011,42(12):1134-1138.
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[6]刘进军,王天稳.碳纤维布加固框架节点低周反复荷载试验研究[J].建筑结构,2010,40(2):70-73.
[7]ALSAYED S H,ALMUSALLAM T H,AL-SALLOUMY A,et al.Seismic rehabilitation of corner RC beamcolumn joints using CFRP composites[J].Journal of Composites of Construction,2010,14(6):681-692.
[8]常正非,杨志勇,李书进.碳纤维加固受损混凝土框架节点的试验研究[J].华中科技大学学报,2016,44(12):64-69,75.
[2]李贵炳,郭玉刚,王来立.节点处梁侧粘贴纤维片材抗弯加固性能研究[J].建筑结构,2010,40(S1):343-346.
[3]徐明,肖德后,陈忠范.碳纤维加固钢筋混凝土柱耐火性能试验研究[J].防灾减灾工程学报,2013,33(4):369-374,388.
[4]陈红秋,蒋凤昌,周桂香,等.CFRP加固锈蚀钢筋混凝土柱承载力试验研究[J].建筑技术,2011,42(12):1134-1138.
[5]吴波,王维俊.碳纤维布加固钢筋混凝土框架节点的抗震性能试验研究[J].土木工程学报,2005,38(4):60-65,83.
[6]刘进军,王天稳.碳纤维布加固框架节点低周反复荷载试验研究[J].建筑结构,2010,40(2):70-73.
[7]ALSAYED S H,ALMUSALLAM T H,AL-SALLOUMY A,et al.Seismic rehabilitation of corner RC beamcolumn joints using CFRP composites[J].Journal of Composites of Construction,2010,14(6):681-692.
[8]常正非,杨志勇,李书进.碳纤维加固受损混凝土框架节点的试验研究[J].华中科技大学学报,2016,44(12):64-69,75.