为研究我国常用树种胶合木钢夹板螺栓连接节点的抗火性能，进行了 4 个胶合木钢夹板螺栓连接试件的炭化速度试验，以及两组(共 8 个)胶合木钢夹板螺栓连接试件在不同持荷水平下的耐火极限试验． 结果表明:钢夹板边缘内侧区域木材的炭化速度小于钢夹板边缘外侧区域，不同截面的水平向炭化速度小于竖向炭化速度，炭化速度随着受火时间的延长有降低的趋势;试件端距达到规范要求后，将端距从 7d 增加到 10d 并不能明显提高耐火极限，耐火极限随着持荷水平的增加而明显降低;其他条件相同时，耐火极限试件升温快于炭化速度试件．

In order to reveal the fire resistance of bolted steel-glulam-steel connections using common tree species in China as the material，four connection specimens were tested to obtain the corresponding charring rates，and two groups of (eight) specimens were tested to reveal their fire endurance in different load levels． It is found that (1) the charring rate of interior area at steel splint edge is lower than that of external area; (2) the horizontal charring rate is lower than the vertical one in different cross sections; (3) the charring rate tends to reduce with the prolon-ging of fire duration; (4) changing the end-to-end distance from 7d to 10d cannot remarkably improve the fire en-durance limit of the bolted connections when the distance meets the regulatory requirements; (5) the fire endurance limit of the connections significantly decreases with the increase of load level; and (6) in the same conditions，the temperature rise of specimens in fire endurance tests is higher than that in charring rate tests．