钢管-波纹钢板约束混凝土组合柱轴压性能有限元分析

封剑森; 孙泽轩; 邹昀; 王城泉

doi:10.13206/j.gjgS23041202

钢管-波纹钢板约束混凝土组合柱轴压性能有限元分析

doi: 10.13206/j.gjgS23041202

1. 江苏华江祥瑞现代建筑发展有限公司, 江苏扬州 225215;
2. 江南大学, 江苏无锡 214122;
3. 浙大城市学院, 杭州 310015

详细信息

作者简介:
封剑森,男,1965年出生,高级工程师,1045727467@qq.com

通讯作者:
孙泽轩,男,1997年出生,硕士研究生,szx720318@163.com。

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出版历程
- 收稿日期: 2023-04-12

Finite Element Analysis of Axial Compression Behavior of Steel Tubular-Corrugated Steel Plate Confined Concrete Composite Column

1. Jiangsu Huajiang Xiangrui Modern Architecture Development Corporation, Yangzhou 225215, China;
2. Jiangnan University, Wuxi 214122, China;
3. Hangzhou City University, Hangzhou 310015, China

摘要

摘要: 钢管-波纹钢板约束混凝土组合柱因其良好的受力性能以及快速的施工速度,在实际工程中得以广泛应用。为进一步研究钢管-波纹钢板约束混凝土组合柱的轴压性能,在已完成的6组轴压试验的基础上,利用ABAQUS有限元软件建立了相应的模型并进行了非线性有限元分析。结合轴压试验结果,从试件的破坏形态、荷载-位移曲线等方面证明了有限元模型的可靠性与适用性。基于已验证的有限元模型进行了大量的参数分析,研究的参数包括:混凝土强度、径宽比、波纹钢板屈服强度以及波纹钢板厚度,以探究不同参数对钢管-波纹钢板约束混凝土组合柱的承载能力、初始刚度、承载力提升系数、延性的影响。模拟结果表明:提升材料强度可以提高试件的承载能力,但对强度提升系数影响很小;增大径宽比可以有效提升试件的极限承载力、强度提升系数与延性,但相应试件的用钢量也会提升;增加波纹钢板厚度基本不会提升试件的承载能力,但会明显提高试件的延性。最后,进行了钢管-波纹钢板约束混凝土组合柱的稳定性分析,在综合考虑钢管-波纹钢板约束混凝土组合柱的截面形状以及材料性质的前提下,提出组合柱长细比的计算方法;通过引入初始缺陷的方式建立起不同长细比下钢管-波纹钢板约束混凝土组合柱的有限元模型,研究了不同长细比对其受力机理以及承载能力的影响,并引入各国规范的计算方法,将模拟结果与计算结果进行比较。对比结果表明:现有规范对于钢管-波纹钢板约束混凝土组合柱极限承载力的设计值偏大,不能准确预测组合柱的承载能力。因此,基于有限元模拟结果,对钢管-波纹钢板约束混凝土组合柱的稳定系数及轴压承载力计算公式进行了修正。
- 波形钢板 /
- 轴压性能 /
- 有限元模拟 /
- 参数分析 /
- 长细比
Abstract: Steel tubular-corrugated steel plate confined concrete composite column has been applied in actual project due to its good mechanical properties and fast construction speed. In order to study the axial compression behavior of steel tubular-corrugated steel plate confined concrete composite column, the FE model was established and nonlinear finite element analysis was carried out by using ABAQUS finite element software based on the six completed groups of axial compression tests. Combined with the results of axial compression tests, the reliability and applicability of the FE model were proved from the failure mode of specimens and load-displacement curves of corrugated steel plate. Based on the verified FE model, a large number of parametric analyses were proceeded, which included concrete strength, diameter-width ratio, yield strength of corrugated steel plate and thickness of corrugated steel plate, the influence of different parameters on the bearing capacity, initial stiffness, strength index and ductility of steel tubular-corrugated steel plate confined concrete composite column were explored. The simulation results showed that increasing the material strength would improve the bearing capacity of the specimen, but had little effect on the strength index. Increasing the diameter to width ratio can effectively improve the ultimate bearing capacity, strength index and ductility of the specimen, but the corresponding steel ratio of the specimen will also increase. Increasing the thickness of corrugated steel plate will not improve the bearing capacity of the specimen, but will obviously improve the ductility. Finally, the stability performance of steel tubular-corrugated steel plate confined concrete composite column was analyzed. Based on the comprehensive consideration of the cross-section and material properties of the composite column, the calculation method of slenderness ratio was proposed. By introducing the initial imperfection, the FE models of steel tubular-corrugated steel plate confined concrete composite column with different slenderness ratios were established. The influence of different slenderness ratios on its mechanical mechanism and bearing capacity was studied and the calculation methods of national codes were introduced to compare with the simulation results. The comparison results showed that the design value of the ultimate bearing capacity of steel tubular-corrugated steel plate confined concrete composite column was too large in the existing codes, which could not accurately predict the bearing capacity of the composite column. Thus, the calculation formula of stability coefficient and axial compression capacity of steel tubular-corrugated steel plate confined concrete composite column was modified based on FE simulation results.
- corrugated steel plate /
- axial compression behavior /
- finite element simulation /
- parametric analysis /
- slenderness ratio

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