【作者】 于金光； 于海升； 郝际平； 冯啸天；

【Author】 YU Jinguang;YU Haisheng;HAO Jiping;FENG Xiaotian;School of Civil Engineering, Xi’an University of Architecture and Technology;Collaborative Innovation Center for Assembled Buildings in Western China;

【机构】 西安建筑科技大学土木工程学院； 西部装配式建筑工业化协同创新中心；

【摘要】 为研究装配式密肋网格构造在强震作用下对薄钢板剪力墙结构动力响应的改善作用,本文在已有试验的基础上,通过数值模拟对几何比为1:3的4层非加劲钢板剪力墙模型和密肋网格防屈曲钢板剪力墙模型进行了不同地震工况下的动力时程分析。分析了有密肋和无密肋两个模型在罕遇地震作用及强余震作用下的位移响应与加速度响应。结果表明:密肋网格的设置使得薄钢板剪力墙各层的竖向刚度分布趋于均匀,其对墙板面外位移抑制作用极其明显,最多可降低面外位移57%;在二次工况作用下,密肋网格防屈曲钢板剪力墙薄弱层最大层间位移增大幅度比非加劲钢板剪力墙降低36%。该项构造措施可有效减缓薄钢板剪力墙薄弱层在地震作用下的刚度退化。更多还原

【Abstract】 By means of numerical simulation combined with experimental data verification, the time-history analysis was carried out on the 1:3 reduced-scale four-layer unstiffened SPSW model and the multi-ribbed SPSW model under different seismic conditions. Firstly, on the basis of the simulation results the displacement response and acceleration response of the two models. The results showed that setting grid multi-ribs plate is conductive to maintaining the uniform stiffness distribution of the structure under the action of rare earthquakes. Meanwhile, this could also effectively reduce the out-of-plane deformation of the infill plate by 57 percent to the maximum extent. Secondly, the inter-story deformation of each model markedly increased when subjected to two-stage strong aftershocks seismic condition. However, the amplitude of increase corresponding to multi-ribbed SPSW in the weak layer is 36% lower than the numerical value corresponding to unstiffened SPSW, which means setting multi-ribs can effectively delay the degeneration of the rigidity corresponding to the weak layer in the thin SPSW.更多还原