Abstract A new formula is proposed for predicting the shear performance of steel-jacketed, cylindrical concrete columns. It was developed based on tests of a new type of steel-jacketed column, but it is shown to outperform existing design methods in predicting the strength of conventional columns as well. The special columns tested were constructed by stacking precast segments (PSs) inside the steel jacket, then infilling the voids with post-pouring concrete (PPC). The precast segments were cast incorporating demolished concrete lumps (DCLs). Thirty-four such columns were tested in the laboratory under combined shear and axial loading. The data confirm that such columns perform almost the same as a traditional concrete-filled steel tube. The shear span ratio is the most critical determinant of their shear capacity and ductility. The complete set of test results are reported.

中文翻译：

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填充含 DCL 的预制管片的薄壁钢管的剪切性能

摘要 提出了一种预测钢套圆柱混凝土柱抗剪性能的新公式。它是基于对新型钢套柱的测试而开发的，但它在预测传统柱的强度方面也优于现有的设计方法。测试的特殊柱是通过在钢护套内堆叠预制段 (PS)，然后用后浇混凝土 (PPC) 填充空隙来建造的。预制段是用拆除的混凝土块 (DCL) 浇筑的。34 个这样的柱子在实验室中在剪切和轴向联合载荷下进行了测试。数据证实，此类柱的性能几乎与传统的钢管混凝土相同。剪跨比是其剪切能力和延展性的最关键决定因素。