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在国家地震工程研究中心,制作了2个高8m、宽4m的2层钢板剪力墙,并采用子结构伪动力试验方案进行试验。第1阶段,在墙两边设置横管约束墙面以减小面外位移和屈曲。第2阶段,用新钢板替代已破坏的钢板且不加约束。选用几组地震波,对两试件进行伪动力试验。介绍试件设计过程、试验结果及简化分析模型。第1阶段的结果表明:1)钢板剪力墙试件能承受试验地震,剪力墙没有破坏,整体强度没有退化;2)横向约束能提高钢板剪力墙的可维护性;3)在结构非线性分析平台PI-SA3D中,采用带状模型和仅拉伸材料属性可很好地反映钢板剪力墙性能;4)当再次受同一地震作用时,试件耗能能力有较大降低;5)如果边界单元按适当比例采用承载力设计原则,等效支撑模型对强震下的钢板剪力墙性能分析是有效的。
At the National Seismic Engineering Research Center, two 2-layer steel shear walls with a height of 8m and a width of 4m were fabricated and tested using the sub-structure pseudo-dynamic test scheme. In the first stage, a horizontal tube constraint wall was set on both sides of the wall to reduce out-of-plane displacement and buckling. In the second stage, replace the damaged steel plate with the new steel plate without restraint. Several groups of seismic waves were selected to test the pseudo-dynamic test of two specimens. Introduce the specimen design process, test results and simplified analysis model. The results of the first stage show that: 1) the test specimens of steel plate shear wall can withstand the test earthquake without shear wall failure and the overall strength does not degrade; 2) the lateral restraint can improve the maintainability of the steel plate shear wall; 3) In the non-linear analysis platform PI-SA3D, the strip model and the tensile properties of the material can be used to reflect the properties of the steel plate shear wall. 4) When the same earthquake is applied again, the energy dissipation capacity of the sample is greatly reduced; 5) If the boundary element adopts the design principle of bearing capacity according to appropriate proportion, the equivalent support model is effective to analyze the performance of steel plate shear walls under strong earthquake.