【作者】 田士峰；

【导师】 梁兴文；

【作者基本信息】 西安建筑科技大学 ， 结构工程， 2006， 硕士

【摘要】 高强混凝土剪力墙能够有效减轻建筑物重量,减小整体结构的地震反应,降低建筑物造价,表现出显著的技术、经济和社会效益优势,已成为现代高层建筑的主要抗侧力构件,但其抗震性能和各种因素对抗震性能的影响程度尚待深入研究。为此,本文做了如下工作: (1)通过4个高强混凝土剪力墙试件在低周反复水平荷载作用下的试验,研究了高强混凝土剪力墙的抗震性能,分析了轴压比、箍筋数量和约束范围对高强混凝土剪力墙变形性能的影响。试验研究结果表明,采用分段约束高强箍筋,可以显著提高高强混凝土剪力墙的延性。 (2)选用基于Kunnath剪力墙宏模型的非线性分析程序IDARC模拟了高强混凝土剪力墙的滞回曲线,对比了计算结果和试验结果。并利用IDARC软件分析了轴压比、剪跨比、边柱纵向钢筋配筋率、横向分布钢筋配筋率和纵向分布钢筋配筋率对高强混凝土剪力墙性能的影响。同时与集中塑性铰模型的分析结果做了对比分析。 通过高强混凝土剪力墙的试验结果与分析结果的对比分析,证实了Kunnath剪力墙宏模型模拟剪力墙试件能取得较好的效果。通过改变轴压比、剪跨比、边柱纵向钢筋配筋率、剪力墙水平分布钢筋配筋率和剪力墙竖向分布钢筋配筋率,揭示了它们对剪力墙性能的影响程度。更多还原

【Abstract】 The high-strength concrete (HSC) shear wall can efficiently make the weight of building lower, so it reduces the earthquake action and the cost of the buildings. Since this characteristic is beneficial to the high-buildings, the HSC shear wall plays an important role in the high-building. The seismic peformace of HSC shear wall is not so explicit. Now, the following work had been done about this:(1) Four specimen walls were tested under constant vertical load and slow cyclic horizontal load to investigate the seismic behavior of HSC shear walls. The influence of the amount and range of confinement reinforcement, and the axial load level on the load-deformation response of the HSC shear walls have been explored deeply. With the amount and range of confinement reinforcement increases, the ductility will increase.(2) A macro model-based finite element program (IDARC) which employs Kunnath’s macro-model to simulate the shear wall, has been used to simulate the hysteretic curves of HSC shear walls, and results from it have been compared with experimental results. The influence of the axial load level, the ratio of height-to-width, the vertical reinforcement ratio of edge column, the horizontal reinforcement ratio of the web and the vertical reinforcement ratio of the web had been done by employed program IDARC. The result of Analysis by Kunnath’s Spread-plasticity model contrast finely with concentrated-plasticity model.By using the Kunnath’s macro-model to simulate the HSC shear wall, it could find that the analytical results agrees with the the experimental from the experimental and analytical researches on HSC shear walls. And draw the some conclusions by changing the level of axial load, the height-to-width ratio, the vertical reinforcement ratio of edge column, the vertical reinforcement ratio of the web and the horizontal reinforcement ratio of the web.更多还原