In order to study the seismic performance of infilled wall frame strengthened with steel-mortar surface cross strip and establish the calculation formula of shear bearing capacity,8 low-rise infilled wall frame structures,3 high-narrow infilled wall frame structures and 1 control specimen without steel-mortar surface cross strip were designed and manufactured,and seismic performance test was carried out.The results show that shear bearing capacity of infilled wall frame strengthened with steel-mortar surface cross strip is greatly affected by the concrete strength,the section size of the frame column and the amount of reinforcement of the cross strip.The shear bearing capacity can be increased by up to 40%after reinforcement.The energy dissipation capacity and ductility of the strengthened specimens are improved to a certain extent.The steel-mortar surface cross strip added to the infilled wall can be regarded as a tension and compression bar system to assist the frame structure.The formula for calculating the shear bearing capacity of the reinforced specimens was obtained by fitting the test data.The results show that there is a synergistic effect of bearing capacity between the frame,the infilled wall and the cross strip.The calculated values of the formula of the infilled wall frame structure are in good agreement with the experimental values.
维普
万方数据
