摘要
为达到设计更为经济、合理的目的,针对地下室顶板上消防车活荷载的取值进行了探讨.通过对消防车队的车轮作用方式和覆土垫层的扩散角选择,建立起合理的计算模型.按照荷载最不利布置原则布置消防车荷载,分别针对单向板和双向板计算了常见板跨及覆土层厚度条件下折减后的等效均布荷载值,并给出合理的设计取值.结果表明:覆土对地下室顶板的消防车荷载起明显的折减作用.折减后的消防车等效均布荷载,远小于规范中类似条件下未考虑覆土层时对应的荷载值.
For the sake of more economical and reasonable design, the paper analyses the equal load of fire engine on the roof of basement. With the selection of wheel＇s mode and the diffusion angle, a reasonable calculation model is established. The equal load of fire engine is disposed based on the principle of most disadvantage arrangement, and the equal load on oneway slab and two-way stab are calculated separately. The result shows that the load value was reduced by overbarden. The reduced equal load of fire engine is much less than that in the similar conditions without overbarden in codes.
出处
《青岛理工大学学报》
CAS
2009年第3期145-149,154,共6页
Journal of Qingdao University of Technology
关键词
地下室顶板
消防车活荷载
覆土层
折减
the roof of basement
equal load of fire engine
overbarden
reduction
