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首页> 外文期刊>Engineering Structures >Seismic performance study on slipping bolted truss-to-column connections in modularized prefabricated steel structures
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Seismic performance study on slipping bolted truss-to-column connections in modularized prefabricated steel structures

机译：模块化预制钢结构中滑移式桁架至柱连接的抗震性能研究

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This study proposed a new-type on-site all-bolted connection that connects a truss to a column and connects a column to a column in modularized prefabricated multi-story and high-rise steel structures. The components in a module are welded together in the factory, and various modules are assembled together quickly using the proposed connection on site. The connection connects a truss to a column through cover plates that extend from the flanges as well as through the vertical connecting plates and the joint flitches. The stiffness of the connection undergoes step-like changes as the load changes. During an earthquake, the cover plates slip relative to the chord members of the truss, dissipating energy. This study conducted tests and finite element analysis on the seismic performance of two specimens of the proposed bolted connection in which slip occurs between the cover plate and chord members, and some seismic performance data associated with the connection, such as hysteretic performance, skeleton curve, ductility, rotational capacity, stiffness degradation and failure mode, are obtained. Some parameters that affect mechanical and seismic properties of the connection were studied, and the slipping rule of the contact surfaces of the bolted connection was obtained. A comparative analysis of the test results for the slipping connection and the non-slipping connection shows that the slipping connection exhibited improved ductility and energy dissipation capacity without significantly reducing the ultimate bearing capacity, and most of the energy was dissipated from the slip. The proposed connection can be used for structures in seismic regions.
机译：这项研究提出了一种新型的现场全螺栓连接，该连接将桁架连接到柱子，并将柱子连接到模块化预制多层高层钢结构中的柱子。模块中的组件在工厂已焊接在一起，并且使用建议的现场连接将各种模块快速组装在一起。该连接通过从法兰延伸的盖板以及垂直连接板和接缝，将桁架连接到圆柱。随着负载的变化，连接的刚度经历了阶梯状的变化。在地震期间，盖板会相对于桁架的弦杆滑动，从而耗散能量。这项研究对建议的螺栓连接的两个标本的抗震性能进行了测试和有限元分析，这些标本的螺栓连接的盖板和弦构件​​之间发生打滑，以及与连接相关的一些抗震性能数据，例如滞后性能，骨架曲线，获得了延展性，旋转能力，刚度降低和破坏模式。研究了影响连接机械和地震性能的一些参数，并获得了螺栓连接接触面的滑动规则。对滑动连接和非滑动连接的测试结果的比较分析表明，滑动连接具有改善的延展性和能量消耗能力，而没有显着降低极限承载力，并且大部分能量从滑动中耗散了。建议的连接可用于地震区域中的结构。

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