空心带肋高强方钢管混凝土柱滞回性能研究
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长沙理工大学 土木与环境工程学院

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Study on the Hysteretic Performance of Concrete-Filled Hollow Ribbed High-Strength Square Steel Columns
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    摘要:

    空心带肋高强方钢管混凝土柱具有自重轻、承载力高及易安装等优势,同时内部空心构造便于厂房、住宅等系统配置管线,节省建筑空间。为研究空心带肋高强方钢管混凝土构件的抗震性能,本文采用有限元分析软件ABAQUS对往复荷载作用下空心带肋高强方钢管混凝土构件进行滞回性能研究。首先,根据现有文献进行模型验证,确认本文中建立模型的准确性和适用性,进而建立精细化的空心带肋高强方钢管混凝土柱的数值分析模型;然后,以典型试件为例,进行全过程分析以及构件在各特征点的应力分析;并分析含钢率、钢管屈服强度、混凝土抗压强度等参数对构件滞回性能的影响;最后利用修正后的侧向承载力计算公式对本文组合柱进行计算并与骨架曲线峰值荷载进行对比。研究结果表明,空心带肋高强方钢管混凝土构件的荷载-位移曲线可分为三个阶段:弹性阶段、弹塑性阶段和下降阶段。当构件处于弹性阶段和弹塑性阶段时,外钢管及加劲肋对混凝土发挥主要约束作用;当构件处于下降阶段时,加劲肋延缓了外钢管的鼓曲。此外,根据参数分析结果,建议在设计时,加劲肋的高度应在截面宽度的15%以内调整;混凝土强度建议控制在C90以下;计算侧向承载力与模拟值吻合较好,误差均值为6.7%。

    Abstract:

    Hollow ribbed high-strength square steel tube concrete columns have the advantages of light weight, high bearing capacity, and easy installation. At the same time, the internal hollow structure facilitates the configuration of pipelines in factories and residential buildings, saving building space. In order to study the seismic performance of hollow ribbed high-strength square steel tube concrete members, this paper uses the finite element analysis software ABAQUS to study the hysteretic behavior of hollow ribbed high-strength square steel tube concrete members subjected to cyclic loads. First, the accuracy and applicability of the model established in this paper are confirmed based on existing literature, and then a large number of detailed numerical analysis models of hollow ribbed high-strength square steel tube concrete columns are established. Then, a full process analysis is carried out on a typical specimen, as well as stress analysis at various characteristic points. the influence of parameters such as steel ratio, yield strength of steel tubes, compressive strength of interlayer concrete on the hysteretic performance of the members is analyzed. Finally, the modified lateral bearing capacity calculation formula is used to calculate the composite column in this paper and compare it with the peak load of the skeleton curve. The research results show that the load-displacement curve of the hollow ribbed high-strength square steel tube concrete members can be divided into three stages: elastic stage, plastic stage, and decline stage. When the members are in the elastic stage and plastic stage, the steel tubes mainly bear the load; When the member is in elastic stage and elastic-plastic stage, the outer steel pipe and stiffener play the main role in restraint of concrete; when the member is in descending stage, the stiffener delays the bulging of the outer steel pipe.. In addition, according to the results of parameter analysis, it is suggested that the height of stiffening rib should be adjusted within 15% of the section width.The strength of concrete is recommended to be controlled below C90.The calculated lateral bearing capacity is consistent with the simulated value, and the mean error is 6.7%.

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  • 收稿日期:2025-12-24
  • 最后修改日期:2026-03-30
  • 录用日期:2026-03-31
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