在周期反复荷载下加固后内框架与砖墙的抗震性能

通过对采用外加钢筋混凝土壁柱加固的三层内框架和采用外加构造柱加固的三层开洞砖墙模型的试验研究,探讨了在垂直荷载及往复水平力共同作用下这类结构的抗震性能和破坏机理。获得了加固结构模型的侧向抗力与变形的滞回曲线及该模型在弹性、弹塑性与破坏三个阶段的变形规律和抗力的骨架曲线。 依据对试验结果的分析,得出了多层内框架房屋采用外加钢筋混凝土壁柱加固内框架与采用外加构造柱加固砖墙的抗震设计计算方法。

Seismic Behaviour of Strengthened R.C. Frame with Exterior Brick Bearing Walls and That of Strengthened Brick Walls Subjected to Cyclic Reversed Action

By means of experimental model study of three storey R.C. frames with exterior brick bearing walls and that of simple brick wall structures strengthened with exterior R.C. columns, the seismic behaviour and damage mechanism of these structures subjected to vertical load and cyclic reversed action are investigated. The hysteretic loops of the models of these two kinds of structures are obtained.Based on the test results and analysis, the design method for strengthening R.C. frame with exterior brick bearing walls and that of simply brick wall structure are proposed.