方中空钢管混凝土叠合短柱的温度场研究  

Temperature field analysis of concrete-filled square hollow steel tubular composite short columns

作　　者：栾天 Luan Tian(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110170,China)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110170

出　　处：《山西建筑》2023年第10期69-73,共5页Shanxi Architecture

摘　　要：在国际标准升温曲线ISO-834下,选定欧洲标准规范给出的材料的热工参数利用有限元分析软件ABAQUS建立结构的温度场模型。之后参考相关的研究实验中的构件,在ABAQUS有限元分析软件中根据选定的热工参数建立与其对应的模型,用来验证模型的建立及参数的选择是否正确。根据验证结果可知建立的模型具有一定的合理性与可靠性。在模拟时笔者采用梁截面尺寸、含钢管混凝土率、受火面、受火时间等参数来探究这些参数对于构件温度变化的影响。结果表明出现了混凝土温度变化的滞后现象,受火表面处的温度与构件内部温度之间的温差越来越大。各种参数下的构件温度表现出不同的变化。Under the international standard temperature rise curve ISO-834,the thermal parameters of materials given in the European standard specifications are selected and the finite element analysis software ABAQUS is used to establish the temperature field model of the structure.Then,with reference to the components in the relevant research experiments,the corresponding model is established in the ABAQUS finite element analysis software according to the selected thermal parameters to verify whether the model establishment and parameter selection are correct.According to the verification results,the established model is reasonable and reliable.In the simulation,the author uses parameters such as beam section size,concrete-filled steel tube ratio,eccentricity,fire surface and fire time to explore the influence of these parameters on the temperature change of the component.The results show that there is a hysteresis phenomenon of concrete temperature change,and the temperature difference between the temperature at the fire surface and the internal temperature of the component is increasing.The component temperature under various parameters shows different changes.

关 键 词：钢管混凝土叠合柱 温度场 火灾作用 有限元 

分 类 号：TU398.1[建筑科学—结构工程]