被动约束混凝土柱轴压过程数值模拟关键因素分析

摘要/Abstract

摘要： 纤维增强复合材料(FRP)约束混凝土柱的轴压破坏过程涉及混凝土的被动约束和混凝土非线性分析问题。基于数值模拟和已有的试验数据分析,提出了影响FRP约束混凝土柱轴压过程数值分析结果的6个关键因素:主动恒定围压下混凝土轴压峰值应力和峰值应变计算模型、被动约束混凝土膨胀函数、混凝土本构模型、FRP-混凝土界面接触类型、边界建模类型和计算终止条件,指出了各关键因素的适用性和局限性。

关键词: FRP, 轴压性能, 约束混凝土, 数值模拟

Abstract: Axial compression failure of the fiber reinforced composite confined concrete columns involves issues of passive confined concrete and nonlinear problems. In order to further study axial compression failure process of the FRP-confined concrete columns, based on numerical simulation and analysis of existing experimental data, six key factors affecting numerical analysis results of FRP-confined concrete columns during axial compression are presented, including peak stress models and peak strain models for concrete under axial compression and active constant confining pressure, dilation function for concrete under passive confinement, concrete constitutive model, FRP-concrete contact types, types of boundary modeling and termination conditions for calculation. Applicability and limitation of each key factor in numerical simulation of axial compression process of FRP-confined concrete columns are pointed out.

Key words: FRP, axial compressive property, confined concrete, numerical simulation

中图分类号:

TB332

康超懿, 欧阳利军, 丁斌, 镇斌. 被动约束混凝土柱轴压过程数值模拟关键因素分析[J]. 玻璃钢/复合材料, 2018, 0(11): 5-14.

KANG Chao-yi, OUYANG Li-jun, DING Bin, ZHEN Bin. ANALYSIS ON KEY FACTORS FOR NUMERICAL SIMULATION OF AXIAL COMPRESSION PROCESS OF PASSIVE CONFINED CONCRETE COLUMNS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(11): 5-14.

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