基于势能原理基面力元法的橡胶混凝土损伤分析  

Damage analysis of rubber concrete by base force element method based on potential energy principle

作　　者：马东翼 应黎坪 付毓 孙钰程 彭一江[1] MA Dongyi;YING Liping;FU Yu;SUN Yucheng;PENG Yijiang(Department of Urban Construction,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城市建设学部,北京100124

出　　处：《混凝土》2024年第9期12-16,22,共6页Concrete

基　　金：国家自然科学基金(10972015)。

摘　　要：以势能原理基面力元的方法为基础,对橡胶混凝土的细观力学性能展开了分析,建立了橡胶混凝土随机圆骨料模型,模拟了橡胶混凝土单轴静态受压的破坏过程,对破坏机理进行了分析,研究了不同橡胶掺量下对橡胶混凝土抗压强度的影响。数值模拟结果表明,橡胶混凝土单轴受压过程中的应力应变变化受骨料随机分布影响较小,并且随着橡胶掺量的提高,抗压强度明显降低。与物理试验对比发现,该细观损伤模型较好地模拟出了橡胶混凝土的抗压强度和开裂过程,为今后分析橡胶混凝土的细观力学性能提供了新的思路。Based on the principle of potential energy and the Base force element method,the meso-mechanical properties of rubber con-crete are analyzed.Based on this,a random circular aggregate model of rubber concrete is established,which simulates the failure process of rubber concrete under uniaxial static compression,and analyzes the failure mechanism.The influence of different rubber content on the compressive strength of rubber concrete was studied.The numerical simulation results show that the change of stress and strain of rubber concrete under uniaxial compression is less affected by the random distribution of aggregate,and the compressive strength decreases signif-icantly with the increase of rubber content.Compared with physical tests,it is found that the meso-damage model can well simulate the compressive strength and cracking process of rubber concrete,which provides a new way to analyze the meso-mechanical properties of rubber concrete in the future.

关 键 词：橡胶混凝土 基面力元法 势能原理 静态受压 橡胶掺量 

分 类 号：TU528.01[建筑科学—建筑技术科学]