\r杨雨青，牟在根\r
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AuthorsHTML:\r杨雨青，牟在根\r
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AuthorsListE:\rYang Yuqing，Mu Zaigen\r
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AuthorsHTMLE:\rYang Yuqing，Mu Zaigen\r
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Unit:\r北京科技大学土木与资源工程学院，北京 100083\r
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Unit_EngLish:\rSchool of Civil and Resource Engineering，University of Science and Technology Beijing，Beijing 100083，China\r
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Abstract_Chinese:\r钢板剪力墙是一种具有良好的延性、抗侧刚度和耗能能力的新型抗侧力结构，非常适用于高烈度地区建筑，通常采用加劲的方法以改善钢板墙的性能．为了对比不同槽钢加劲形式、框-板连接形式对钢板剪力墙滞回性能的影响，建立了非线性有限元模型进行分析，以预测加劲钢板剪力墙的抗震性能和破坏行为．通过建立11 个双层单跨的加劲钢板剪力墙模型，包括竖向加劲、斜向加劲、单侧开洞、两边连接等情况，对其承载能力、耗能能力、退化特性、延性和破坏特征等问题进行了对比分析．结果表明，加劲肋能有效改善钢板剪力墙的滞回曲线“捏缩”现象，不同程度地提高钢板剪力墙的承载能力和抗侧刚度，其中斜向布置加劲肋能明显地提高结构抗侧刚度和承载能力，并在墙板屈曲后维持较高的刚度；而竖向加劲形式对结构的刚度和承载力提高较小，墙板受力更加均匀．两边连接形式的钢板剪力墙能有效避免对框架柱的附加弯矩，并可很好地与加劲钢板协同工作，结构具有较好的稳定性和耗能能力．当墙板跨高比较大时，采用小区格的交叉加劲形式有更好的效果，对角加劲形式在屈曲后对框架柱有较大的附加作用，因此设计时应增大柱截面或考虑进一步减小板厚，避免框架柱过早发生局部屈曲进而导致结构承载力下降．\r
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Abstract_English:\rSteel plate shear wall(SPSW)is a new type of lateral force resisting structure with good ductility，lateral stiffness，and energy dissipation. SPSW is suitable for buildings in high-intensity areas，and stiffening is often used to improve its performance. To compare the effects of different forms of channel-stiffening and frame-plate connections—including vertical stiffening，diagonal stiffening，one-side opening，and beam-connected SPSW—on the hysteretic behavior of SPSW，nonlinear finite element models were established to analyze and predict seismic performance and failure behavior. In this study，11 two-span single-span stiffened SPSW models were established. The bearing capacity，energy dissipation，degraded characteristics，ductility，and failure modes of the earlier mentioned SPSW forms were compared. The results showed that channel stiffeners can effectively improve cyclic pinch of SPSWs and increase the load-bearing capacity and lateral stiffness in varying degrees. Diagonal stiffeners could significantly improve the lateral stiffness and load-bearing capacity of the structure，which could consequently maintain a higher stiffness after steel plate buckling，while the vertical stiffening form had less improvement on the stiffness and bearing capacity of the structure，and the force on the steel plate was more uniform. The beam-connected SPSW could effectively avoid additional bending moment on the columns and had good cooperation with the stiffeners，and
the structure had good stability and energy consumption. When the span-height of the plate was relatively large，the diagonal stiffening form in the sub-plate had a better effect. The diagonal stiffening form had a greater additional effect on the columns after buckling；therefore，in its design，the cross section of the columns should be increased or the plate thickness should be further reduced to avoid premature local buckling of the columns，which can reduce structural bearing capacity.\r
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Keyword_Chinese:钢板剪力墙；滞回性能；槽钢加劲肋；耗能能力；退化特性；有限元法\r

Keywords_English:steel plate shear wall；hysteretic behavior；channel stiffener；energy dissipation；degradation characteristic；finite element method\r


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