梁式支架施工活荷载合理取值方法  

Rational Value of Construction Live Loads for Beam-pier Scaffolding

作　　者：武道凯 赵玉红[1] 张文学[1] 费恺 WU Daokai ZHAO Yuhong ZHANG Wenxue FEI Kai(College of Architecture and Civil Engineering, Beijing University of Technology,Beijing 100124, China Beijing Urban Construction Yatai Group Co.,Ltd., Beijing 100013, China)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京城建亚泰建设集团有限公司,北京100013

出　　处：《铁道建筑》2016年第9期47-50,78,共5页Railway Engineering

摘　　要：施工活荷载具有区域性的特点,只作用在施工工作面上。在通常的临时结构设计理论中,施工活荷载施加在整个混凝土浇筑面上,当混凝土浇筑面积较大时,这可能会使结构在设计验算时承受过多本不存在的荷载,造成设计过于保守。为研究通常的施工活荷载取值方法的保守程度,以梁式支架为例,首先介绍了现行临时结构设计理论对于施工活荷载的取值方法,然后从理论及实际工程两个层面上分析了这种取值方法的保守程度,最后提出了梁式支架施工活荷载的合理取值方法。Construction live load acts at local working area.As for concrete casting,the construction load is assumed to act on the entire casting face in design.When the area is large,the designed load is over-estimated and thus the design is too conservative.Taking the beam-pier scaffolding as example,the conservative degree of the value method of construction live loads was studied.Firstly,the value method of construction live loads was described by the current structure design theory.Secondly,the conservative degree of the value method was analyzed from theoretical and practical aspects.Finally,suggestion on rational value of construction live loads was proposed.

关 键 词：临时结构 梁式支架 施工活荷载 合理取值 施工工作面 混凝土浇筑面 

分 类 号：U445[建筑科学—桥梁与隧道工程]