摘要
采用常温下和高温下混凝土矩形柱的试验结果,验证数值模拟程序RCSSCF的有效性,并分析各主要参数对《ISO 834建筑构件耐火试验方法》规定的升温过程下混凝土矩形柱耐火极限的影响规律.针对不同荷载比、计算长度、截面尺寸、荷载偏心率、配筋率和荷载角共9 000种工况,进行四面受火时混凝土矩形柱的高温反应分析.通过对大量计算结果的整理和分析,给出了该类构件耐火极限的实用计算公式.
The reliability of numerical program RCSSCF is validated by the experimental results of columns with rectangular cross section at room temperature and high temperature. The influence of some main parameters on the fire resistance of the columns subjected to the ISO 834 standard fire is analyzed using RCSSCF. 9000 rectangular columns subjected to fire on four sides with different load ratios, effective lengths, sectional dimensions, load eccentricity ratios, reinforcement ratios, and load angles are analyzed to find the fire response. Based on the simulation results, a practical calculation formula for the fire resistance of rectangular columns subjected to fire on four sides, is presented.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2008年第2期284-288,共5页
Journal of Huaqiao University(Natural Science)
基金
国家自然科学基金资助项目(50578066)
福建省青年科技人才创新项目(2007F3064)
华侨大学高层次人才启动项目(07BS405)
关键词
混凝土
柱
耐火极限
矩形截面
实用计算
concrete
column
fire resistance
rectangular cross section
practical calculation
