（上海大学土木工程系  200072
【提要】  对外包钢加固轴心受压砖柱的受力特点和横向应变进行了分析，提出了外包钢约束作用下砖砌体侧约束应力、抗压强度的计算方法。在考虑截面有效约束区和非有效约束区的基础上，提出了外包钢加固轴心受压砖柱的极限承载力计算方法。计算结果与已有试验结果吻合较好，研究结果可供类似工程参考。
【关键词】  外包钢  加固  轴心受压砖柱  轴压极限承载力
Analysis of Flexural Behavior of Masonry Column Strengthened by Wrapped Steel Outside Under Axial Compression/Ouyang Yu, Liu Nengke(Department of Civil Engineering, Shanghai University, Shanghai 200072, China)
Abstract:The stress capacity and lateral strain of masonry column strengthened by wrapped steel outside under axial compression are analysed. The method of calculating the restraint stress and bearing capacity is suggested. By considering the effectively confined area and the ineffectively confined area in the masonry column section, an analytical model to predict the ultimate compressive strength of masonry column strengthened by wrapped steel outside under axial compression is developed. The results are in good agreement with experimental data,and can serve as reference to engineering application.
Keywords:wrapping steel outside; strengthening; masonry column; ultimate axial compressive strength