轻骨料钢管混凝土柱受火作用下热响应试验研究及数值分析  

EXPERIMENTAL STUDY AND NUMERICAL ANALYSIS OF THE THERMAL RESPONSE OF LIGHT-WEIGHT AGGREGATE CONCRETE FILLED STEEL TUBULAR COLUMN UNDER FIRE

作　　者：周明[1] 王新堂[2] 章茂廷 陈跃[1] Zhou Ming Wang Xintang Zhang Maoting Chen Yue(School of Civil and Transportation Engineering, Ningbo University of Technology, Ningbo 315016, China Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo 315211, China)

机构地区：[1]宁波工程学院建筑与交通工程学院,浙江宁波315016 [2]宁波大学建筑工程与环境学院,浙江宁波315211

出　　处：《钢结构》2017年第6期106-110,共5页Steel Construction

基　　金：宁波市自然科学基金项目(2013A610201);浙江省教育厅科研项目;2014年大学生创新训练计划项目(201411058004);宁波工程学院建工学院支助项目;宁波工程学院高教课题(NG2017016);浙江省科公益技术应用研究计划(2016C33258)

摘　　要：由于钢材和轻质混凝土的共同作用,使得轻骨料钢管混凝土结构可有效减轻自重并提高其耐火性能。为分析钢管轻骨料混凝土结构在高温下的力学性能劣化规律,需要确定构件的温度场分布。利用火灾试验炉对4根试件进行高温试验,测量构件不同截面的热响应,选择材料热工参数,对比试验结果,采用有限元软件分析钢管轻骨料混凝土柱受火作用下的热响应,建立合理的数值分析模型,该研究成果可作为进一步分析轻骨料钢管混凝土结构受火作用下力学性能的基础。It is more effective to reduce weight and to improve fire-resistance performance of light-weight aggregate concrete filled steel tube structure because of the interaction action of steel and concrete. In order to analyze the degradation law of material mechanical properties under fire,the temperature field of structure was investigated. The high-temperature tests of four specimens were carried out in order to measure the thermal response of different cross section which using fire furnace. The reasonable numerical simulation model was established by employing the finite element method（ FEM） to compute the thermal response of light-weight concrete filled steel tubular columns,choosing the material thermal parameters and comparing the results of high-temperature tests with FEM. The research results made it possible for further researches on the mechanical behavior of light-weight aggregate concrete filled steel tubular column under fire.

关 键 词：轻骨料钢管混凝土柱 火灾温度场 热响应 非线性有限元 高温试验 

分 类 号：TU398.9[建筑科学—结构工程]