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首页> 外文期刊>Advances in Structural Engineering >Analysis of Seismic Behaviour of Welded Steel Connections and Frames with Differently Constructed Connections
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Analysis of Seismic Behaviour of Welded Steel Connections and Frames with Differently Constructed Connections

机译：焊接钢连接和结构不同的框架的抗震性能分析

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摘要

Connection construction has an important effect on the ductility and capacity of steel structures subject to seismic excitation. In order to study the seismic behaviour of steel connections and frames with differently constructed members and connection, nonlinear 3-D finite element analyses based on ABAQUS have been conducted. Firstly, the use of multi-scale nonlinear finite element models has been proved appropriate after comparing their predictions with those of tests, including the hysteretic behaviour of nine steel variously constructed members and connections. Secondly, nine steel frame multi-scale models provided with different member and connection designs were established, and dynamic elasto-plastic seismic performance evaluation analyses were carried out. The results show that: all different connection and member designs studied do not have significant effects on the macro seismic behaviour of steel frames, but they does exist an improvement of the fracture tendency at welded toe for failure forms to be affected. Reinforced construction of connections results in no base shear forces increase. Reduced construction details, such as the use of web holes and 'dog bone' members, does not seriously weaken the basic behaviors of connections and does provide good energy dissipation characteristics when subject to earthquake excitation.
机译：连接结构对受地震激发的钢结构的延性和承载能力有重要影响。为了研究具有不同构造的构件和连接的钢连接和框架的抗震性能，基于ABAQUS进行了非线性3-D有限元分析。首先，在将多尺度非线性有限元模型的预测结果与试验结果进行比较后，证明了使用多尺度非线性有限元模型是适当的，包括9种不同构造的钢构件和连接件的滞后行为。其次，建立了具有不同构件和连接设计的九种钢框架多尺度模型，并进行了动态弹塑性抗震性能评估分析。结果表明：所研究的所有不同连接和构件设计对钢框架的宏观抗震性能没有显着影响，但是它们确实存在一种改善的趾尖断裂趋势的影响，以影响破坏形式。连接的加强结构不会增加基础剪力。减少构造细节，例如使用腹板孔和“狗骨头”构件，不会严重削弱连接的基本性能，并且在受到地震激励时确实提供了良好的能量消散特性。

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