摘要
《建筑结构荷载规范》(GB 50009—2012)中对于汽车库双向板跨度小于3m×3m时的楼面等效均布活荷载值并未做出明确规定。在进行汽车库设计时,可能出现在柱距不变的条件下改变次梁间距的情况,导致楼块尺寸减小后产生楼面梁活荷载显著增大的异常情况。而且近年来的新车型对机动车等效活荷载值的影响尚缺乏相应的研究。通过收集国内外新型小客车型号,对其外形尺寸、轴距、轮压等相关参数进行统计分析,得到用于结构设计的标准小客车计算参数。对不同跨度的单向板、双向板、楼面次梁与主梁的机动车等效均布活荷载进行了深入研究,考虑了不同柱网尺寸、次梁布置方式以及荷载不利布置的影响。根据计算分析结果,提出了相应的设计建议。
In the existing Load code for the design of building structures （GB 50009--2012 ） , there is no definite provision about equivalent uniform live load value of two-way floors whose spans are less than 3m× 3m. During the design of garage under the same column spacing, the live load of Boor beams increases significantly due to the reduced fioor size when the secondary beam spacing is changed. In recent years, the impact of new motor vehicle on the equivalent uniform live load is still lack of appropriate research. By collecting domestic and international new minibus, related parameters including dimensions, wheelbase and wheel pressure were statisticed and analyzed, calculation parameters of the standard minibus for structural design were obtained. Considering the influence of different column grid sizes, secondary beam layout and unfavorable live-load distribution, motor vehicles equivalent uniform live loads of one-way slab, two-way slab, secondary beam and girder under different spans were further researched. On the base of calculation and analysis results, appropriate design recommendations were put forward.
出处
《建筑结构》
CSCD
北大核心
2014年第17期88-94,共7页
Building Structure
关键词
机动车
等效均布活荷载
楼板
楼面梁
设计建议
motor vehicle
equivalent uniform live load
floor
floor beam
design recommendation
