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介绍椭圆形钢管混凝土长柱的试验结果。根据已有的关于椭圆形钢管混凝土柱的试验结果,比较这种新型截面钢管混凝土柱在常温和高温下的性能。试验参数包括荷载偏心率(0,20和50 mm)和填充物类型(素混凝土或钢筋混凝土)。在同心和偏心轴向荷载下,进行6项室温下的测试以及6项高温下的测试。通过试验结果评估目前欧洲规范EC 4中关于室温和防火设计的规定,并评估所提出的新的防火设计建议。
The test results of oval CFST long columns are introduced. According to the existing test results of oval CFST columns, the performance of this new CFST column at normal temperature and high temperature is compared. The test parameters include load eccentricity (0, 20 and 50 mm) and fill type (plain concrete or reinforced concrete). Under concentric and eccentric axial loads, six tests at room temperature and six tests at elevated temperatures were performed. The test results are used to assess the current provisions of EC 4 in respect of room temperature and fire protection design and to evaluate the proposed new fire protection design recommendations.