论文部分内容阅读
依据“钢筋混凝土抗震结构的机构控制理论”设计了一榀两跨三层壁式框架,采用“双控连梁”同时在墙肢底部嵌入“人工塑性铰”,进行了低周反复倒三角形比例加载试验及理论分析。证明了“机构控制理论”对R.C.壁式框架的可行性,双控连梁的破坏型态由通常的剪切型变为弯曲型,其延性显著提高,最终形成梁式侧移机构,使结构吸能耗能能力得到了改善。编制了考虑刚域、轴向及剪切变形影响的壁式框架弹塑性全过程分析电算程序,采用包括刚度下降段的扩展Clough单元模型,对变形后期的大变形、结构整体延性及局部延性进行了计算,其结果与试验吻合较好。
Based on the “Theories of Mechanism Control of Reinforced Concrete Anti-seismic Structures”, a two-span, three-layer wall frame was designed. The “double control coupling beam” was used to embed “artificial plastic hinges” at the bottom of the wall limbs at the same time. Loading test and theoretical analysis. The feasibility of the “branch control theory” for the RC wall frame is proved. The failure mode of the double-control coupling beam is changed from the normal shearing type to the bending type. The ductility is significantly improved, and the beam type side-shifting mechanism is finally formed to make the structure. Energy consumption capacity has been improved. An elasto-plastic whole process analysis computer program for wall frames was developed considering the effects of rigid domain, axial and shear deformations. The extended Clough unit model including the stiffness reduction section was used to study the large deformation, overall ductility and local ductility of the post-deformation stage. The calculation was performed and the results were in good agreement with the test.