Abstract Steel-concrete-steel (SCS) sandwich walls with J-hooks (SCSSWJs) exhibit wide potential applications in both civil and offshore constructions. This paper firstly developed nonlinear finite element models (NFEMs) for SCSSWJs. Two different NFEMs, namely FEM-I and FEM-II, were developed that adopted different simplifying methods on modelling complex J-hooks. Accuracies of these two NFEMs were validated by 11 tests on SCSSWJs under in-plane shear. The validations showed that these two NFEMs were capable of simulating structural behaviours of SCSSWJs subjected to in-plane shear. The FEM-II was finally adopted for the parametric studies considering both numerical accuracy and simulation efficiency. The studied parameters in the parametric studies included concrete core strength, J-hook spacing, thickness of faceplate, wall thickness of steel tube in edge column, and axial force ratio. The effects of these parameters on ultimate lateral shear resistance of SCSSWJs were detailed reported and discussed. Theoretical models have also been proposed to predict the ultimate lateral shear resistance of SCSSWJs. Their capabilities on the predictions of ultimate lateral shear resistance of SCSSWJs have been checked through validations against 22 test results and 60 FE simulated results.

中文翻译：

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SCS夹心墙在面内剪切作用下的数值和参数研究

摘要 带有 J 形钩 (SCSSWJ) 的钢-混凝土-钢 (SCS) 夹层墙在民用和海上建筑中具有广泛的潜在应用。本文首先为 SCSSWJ 开发了非线性有限元模型 (NFEM)。开发了两种不同的 NFEM，即 FEM-I 和 FEM-II，它们采用不同的简化方法对复杂的 J 钩进行建模。这两个 NFEM 的精度通过在面内剪切下对 SCSSWJ 进行的 11 次测试得到验证。验证表明，这两个 NFEM 能够模拟 SCSSWJ 承受面内剪切的结构行为。考虑到数值精度和模拟效率，最终采用 FEM-II 进行参数研究。参数研究中研究的参数包括混凝土芯强度、J 形钩间距、面板厚度、边柱钢管壁厚和轴力比。详细报告和讨论了这些参数对 SCSSWJ 极限侧向剪切阻力的影响。还提出了理论模型来预测 SCSSWJs 的极限侧向剪切阻力。通过对 22 个测试结果和 60 个 FE 模拟结果的验证，他们对 SCSSWJ 的极限侧向剪切阻力的预测能力已得到验证。