建筑箱形叠合柱结构偏压受力性能有限元分析

华庆

宣城职业技术学院建筑艺术系，安徽 宣城  242000

摘要：为研究建筑箱形叠合柱结构偏压受力性能，采用ABAQUS软件建模，通过有限元分析法分析长细比、偏心距不同时，三肢箱形叠合柱结构、四肢箱形叠合柱结构的偏压受力性能，采用传统方法计算随机选择试件的偏压承载力，并与实际测试结果对比。结果显示：四肢、三肢箱形叠合柱结构试件的偏压最大承载力随长细比的增大而减小，随偏心距的增大而减小；绕x、y轴偏压破坏测试中，随偏心距的增大，2种结构的偏压承载力均减小，但P95型箱形叠合柱构件减小幅度小于P145型结构；三肢箱形叠合柱结构试件绕x轴偏压承载力减小幅度小于绕y轴；采用有限元方法计算偏压受力性能比传统方法更接近实际测试结果。

关键词：建筑箱形叠合柱结构；偏压；受力性能；有限元分析；长细比；偏心距

Finite element analysis of eccentric compression performance of building box composite column structure

HUA Qing

Architectural Art Department, Xuancheng Vocational and Technical College，Xuancheng 242000，China

Abstract:In order to study the biasing mechanical performance of building box composite column structure, the ABAQUS software was used for modeling. The biasing mechanical performance of three limb box composite column structure and four limb box composite column structure with different slenderness ratio and eccentric distance is analyzed by finite element analysis method. The biasing bearing capacity of randomly selected specimens is calculated by traditional method and compared with the actual test results. The results show that the maximum eccentric bearing capacity of four limb and three limb box composite columns decreases with the increase of slenderness ratio and eccentricity; in the x-axis and y-axis eccentric failure test, the eccentric bearing capacity of the two structures decreases with the increase of eccentricity, but the reduction range of P95 structure is less than that of P145 structure; The reduction of the eccentric bearing capacity of the three leg box composite structure specimen around the x-axis is less than that around the y-axis; the calculation of biasing force performance by finite element method is closer to the actual test results than that by the traditional method.

Keywords:building box composite column structure; eccentric pressure; mechanical performance; finite element analysis; slenderness ratio; eccentric distance