十字型轻钢混凝土组合异形柱受压力学性能研究

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中图分类号： TU398+.2 文献标志码：A DOI： 10.15935/j.cnki.jggcs.202503.0013

AbstractIn order to investigate the compressve performance of a new type of cross shaped light steel concrete composite irregular column，this paper first conducted anaxial compresson test on it.The test results showed thatthe failure mode of the cross shaped composite column was mainly bending failure，with high axial compression bearing capacity and good deformation ability.A refined finite element model was established based on experimental results，and numerical simulationanalysiswas conducted.Then，the finite element analysis results were compared with the experimental test results，and the two were in good agreement，which which verified the correctness of the established finite element model.Finally，the validated finite element calculation model was used to analyze the influences offour parameters，namely concrete strength，steel plate thickness，eccentricity，and aspect ratio，on the compressve performance of composite columns.The results indicate that the bearing capacity and initial stifness of the specimen decrease with increasing eccentricity， whilethey increase with increment of concrete strength and steel plate thickness.However，the enhancement effect on stiffess isnot significant and shows diminishing increments.The deformation capacity of cross shaped composite columns is mainly affcted by the aspect ratio，and the ductility and ultimate bearing capacity of the specimens decrease with the increase of aspect ratio.

Keywordsprefabricated building， light steel concrete composite structure，cross shaped column， compression mechanical property

0 引言

近年来，在“双碳”目标驱动下，低碳、节能的绿色建筑与建造方式得到空前发展，与装配式技术相结合的超低能耗装配式建筑将成为未来建筑业的发展方向。（剩余11832字）