Cyclic tests on steel and concrete‐filled tube frames with Slit Walls
Cyclic tests on steel and concrete‐filled tube frames with Slit Walls
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DOI：
10.1002/eqe.648
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发表时间：
2007-05
影响因子：
4.5
通讯作者：
T. Hitaka;C. Matsui;J. Sakai
中科院分区：
文献类型：
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作者：
T. Hitaka;C. Matsui;J. Sakai
对三个单层钢框架和四个三层钢管混凝土框架进行了低周反复荷载试验，框架采用带竖向缝钢板剪力墙的新型抗震构件加固。在这种剪力墙系统中，狭缝之间的钢板节段表现为一系列的弯曲连接，这提供了相当大的延性反应，而不需要对墙壁进行重型加劲。钢剪力墙和弯矩框架表现出延性的方式，超过4%的漂移没有突然的强度退化或轴向阻力损失。这些测试和补充分析的结果提供了一个等效支撑模型的基础，用于商业上可用的框架分析程序。试验和分析结果表明，水平力主要由连接中部螺栓承担，而竖向力和弯矩主要由连接边缘螺栓承担，应设计摩擦螺栓。当提供足够的横向加劲时，这种新型剪力墙可以实现完全塑性强度和非退化滞回性能。版权所有© 2006约翰威利父子有限公司.
Cyclic loading tests were performed on three one‐storey steel frames and four three‐storey concrete‐filled tube (CFT) moment frames reinforced with a new type of earthquake‐resisting element consisting of a steel plate shear wall with vertical slits. In this shear wall system, the steel plate segments between the slits behave as a series of flexural links, which provide fairly ductile response without the need for heavy stiffening of the wall. The steel shear walls and the moment frames behaved in a ductile manner up to more than 4% drift without abrupt strength degradation or loss of axial resistance. Results of these tests and complementary analysis provide a basis for an equivalent brace model to be employed in commercially available frame analysis programs. Test and analytical results suggest that the horizontal force is carried by the bolts in the middle portion of the wall–frame connection, while the vertical forces coupled with the moment in the connection are resisted by the bolts in the edge portion of the connection, for which the friction bolts in the connection should be designed. When sufficient transverse stiffening is provided, full plastic strength and non‐degrading hysteretic behaviour can be achieved for this new type of shear wall. Copyright © 2006 John Wiley & Sons, Ltd.