对地下室顶板上消防车活荷载合理取值的探讨  

Research on Reasonable Value of Fire Engine Live Load on the Roof of Basements

作　　者：徐威[1] 洪油然 陈飞舸 

机构地区：[1]上海现代建筑设计(集团)有限公司现代都市建筑设计院,上海200041

出　　处：《结构工程师》2011年第4期12-16,共5页Structural Engineers

摘　　要：针对2006年版《建筑结构荷载规范(》GB 50009—2001)第4.1.1条对消防车活荷载规定的缺陷,分别以板和梁为研究对象,考虑车台数、覆土厚度、计算跨度等因素,按内力(弯矩)等值的原则,计算出不同条件下的消防车等效均布活荷载,进而归纳出适于设计应用的取值。研究表明:覆土对qe有明显的折减作用,是影响qe取值的主要因素;当覆土厚度较小时q,e随计算跨度的增加也有一定程度的衰减。实际工程中,应针对具体情况,充分考虑各种影响因素,不宜直接采用规范规定的消防车活荷载。To solve the defect of ＂Load code for the design of building structures＂ GB 50009—2001（2006 edition）.4.1.1＇s regulation on fire engine live load,the equivalent uniform live load（qe） under different conditions was calculated taking slab and beam respectively as the research objects,considering fire engine numbers,covering soil thickness and calculated span,according to the principle of internal forces（bending moment） equivalence.Research indicated that the covering soil thickness was the major influence factor of the engine live load,the load value was reduced with the increace of covering soil thickness.When the covering soil thickness was small,the load value was also reduced with the increace of calculated span.In actual projects,it should be noted to choose the reasonable value of fire engine live load according to different conditions.

关 键 词：地下室顶板 消防车 等效均布活荷载 覆土厚度 计算跨度 

分 类 号：TU312.1[建筑科学—结构工程]