混凝土板墙加固砖墙受剪承载力计算方法  

Calculation methods for shear capacity of brick walls strengthened with concrete splints

作　　者：郑文忠[1] 王稳[1] 闫凯[1] 王英[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《地震工程与工程振动》2013年第2期95-102,共8页Earthquake Engineering and Engineering Dynamics

基　　金：国家教育部长江学者奖励计划资助项目(2009-37);黑龙江省科技攻关项目(GC09C205);黑龙江省科技推广项目(TC10A0101);哈尔滨工业大学"985工程"优秀科技创新团队建设项目(2011)

摘　　要：针对混凝土板墙加固砖墙的复合墙体受剪承载力计算方法中未考虑高宽比和混凝土板墙应变滞后影响的问题,本文采用ABAQUS程序建立了混凝土板墙加固前后砖墙精细化有限元模型,分别对未加固砖墙和混凝土板墙加固后的墙体受剪承载力进行参数分析,砖墙的轴压比为0.1～0.8,高宽比为0.4～2.5,混凝土板墙的配筋率为0.47%～1.88%。分析结果表明,轴压比为0.6时,砖墙的受剪承载力最大;轴压比为0.8时,加固后墙体的受剪承载力最大。基于试验结果,提出了加固前后的墙体受剪承载力计算公式。Focusing on the influence of not considering aspect ratio and lagging strain in the existing calculation methods of shear capacity of brick masonry walls strengthened with concrete splints, finite element models for the walls before and after strengthened with concrete splints are established using ABAQUS program. A parametric study is conducted to investigate the effects on the shear capacities of brick masonry walls before and after strength- ened with concrete splints, due to the change in axial compression ratio from O. 1 to 0.8, aspect ratio from O. 4 to 2.5, and the reinforcement ratio from 0.47% to 1.88%. The result shows that the shear capacity of brick walls is the greatest, when the axial compression ratio is 0.6, and the shear capacity of brick walls strengthened with con- crete splints is the greatest, when the axial compression ratio is 0.8. Based on the analysis results, the calculation methods for the shear capacity of brick masonry walls before and after strengthened with concrete splints are put for- ward.

关 键 词：砖墙 受剪承载力 混凝土板墙 加固 

分 类 号：TU362[建筑科学—结构工程] P315.92[天文地球—地震学]