粘贴碳纤维布砖砌体墙在低周反复荷载作用下的有限元分析  

Finite Element Analyses of Strengthening Brick Masonry Wall under Low-Frequency Reciprocating Load with CFRP

作　　者：左宏亮[1] 孙赟峰[1] 朱琳琳[1] 

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150040

出　　处：《沈阳建筑大学学报（自然科学版）》2010年第2期276-281,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家科技支撑计划项目(2006BAJ06B08)

摘　　要：目的研究碳纤维布加固砖砌体墙的抗震受力性能及不同的碳纤维布粘贴方式对砖砌体墙抗剪承载能力的影响,提出纵横粘贴碳纤维布和四面围束粘贴碳纤维布的方法.方法对比交叉粘贴碳纤维布和横向粘贴碳纤维布,采用有限元分析软件ANSYS,模拟各种不同的碳纤维布粘贴方式,并对墙体和碳纤维布分别进行应力分析,对各种碳纤维布粘贴方式的抗剪承载力进行计算和比较.结果交叉粘贴碳纤维布的墙体抗剪承载力较未加固墙体提高了5.6%,横向及纵横向粘贴碳纤维布加固墙体的抗剪承载力分别提高了11.4%～20.4%.四面围束粘贴碳纤维布加固墙体的抗剪承载力提高了20.3%.结论在砖砌体墙表面粘贴的碳纤维布能够提高墙体的抗剪承载力,增加墙体的整体性,改善墙体抗震受力性能;纵向粘贴碳纤维布能够有效控制横向碳纤维布的剥离.To research on the aseismic property of strengthening masonry wall with CFRP and the influence of different strengthening methods to the shearing resistance capacity, this paper proposes the methods of pasted CFRP in vertical and horizontal, as well as in encircled. The research will be compared with method of pasting CFRP in cross and horizon, by applying finite element analysis software ANSYS, simultaneously, various strengthening methods are simulated, stress analyses on brick masonry and CFRP are carded out, shearing resistance capacity towards the brick masonry structure is calculated and compared. The results from the finite element analysis shows that the shearing resistance capacity of pasted CFRP in crossed increased 5.6% when compared with non-strengthened wall, comparatively, pasted CFRP in horizontal and vertical, the shearing resistance capacity increased 11.4% -20. 4%, finally, pasted CFRP in encircled increased highly by 20. 3 %. Conclusively, CFRP pasted on the surface of the wall attributes to the increase of sheafing resistance capacity and integrity, furthermore, masonry wall＇s aseismic property is also improved. Moreover, pasted CFRP in vertical could more effectively control the strip of pasted CFRP in horizontal.

关 键 词：碳纤维布 加固 砖砌体结构 有限元分析 

分 类 号：TU362[建筑科学—结构工程]