摘要
为了研究中、高烈度地震区装配式钢梁-预制柱组合框架结构的抗震性能,进行了两个大比例钢梁-预制混凝土柱-基础组合框架子结构试件的低周往复加载试验,介绍并讨论了主要试验结果。两个组合框架子结构试件中,钢梁均通过端板、预应力高强螺栓与预制柱连接,而预制柱分别通过机械连接器和纵筋锚固的方式与基础连接。试验结果表明,当层间位移延性系数达到5.0时,构件仍然具有较好的抗侧刚度与强度,没有出现明显的刚度与强度退化现象,合理设计后的装配式钢梁-预制柱组合框架结构在强度、侧移延性和屈服后变形能力等方面能够满足抵抗地震作用的需要。根据试验结果,还比较了两种预制柱和基础连接方式对整体结构性能的影响。
n order to investigate the seismic behavior of assembled steel beam-PC column composite frames in medium and high seismic regions, two large scale beam-column-footing frame subassemblies were tested under cyclic horizontal loading. The main experimental results were presented and discussed. In the two test subassemblies, steel beams were connected to the precast columns by endplates and post-tensioned high strength bolts. The precast columns were connected to the footings through mechanical couplers and dowel anchorage methods respectively. Test results indicate that the test subassemblies can exhibit excellent strength and stiffness retention capacity even when the layer displacement ductility factor reaches 5. O. The assembled steel beam-PC column composite frames can be designed for resisting seismic load in terms of strength, drift ductility, and post-yield deformation capacity. In addition, the influences of the two different column-footing connection types are evaluated.
出处
《建筑结构》
CSCD
北大核心
2013年第9期66-71,共6页
Building Structure
基金
国家自然科学基金(51108484)
中央高校基本科研业务费资助(CDJRC10200017)
关键词
钢梁-预制柱节点
组合结构
子结构
抗震性能
steel beam-PC column joint
composite structure
subassembly
seismic behavior
