筒仓仓顶空间钢桁架施工支撑平台模块化设计  

Modular design of steel space truss construction support platform for silo roof

作　　者：刘卫然[1,2,3] 郭世达 于海丰 高任清[4] 韩建田 LIU Wei-ran;GUO Shi-da;YU Hai-feng;GAO Ren-qing;HAN Jian-tian(School of Civil Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;Innovation Center of Disaster Prevention and Mitigation Technology for Geotechnical and Structural Systems of Hebei Province(Preparation),Shijiazhuang 050018,China;Engineering Technology Research Center for Intelligent&Lo-carbon Assembled Building,Shijiazhuang 050018,China;Hebei No.4 Construction Engineering Co.,Ltd.,Shijiazhuang 050051,China)

机构地区：[1]河北科技大学建筑工程学院,河北石家庄050018 [2]河北省岩土与结构体系防灾减灾技术创新中心(筹),河北石家庄050018 [3]智能低碳装配式建筑技术研究中心,河北石家庄050018 [4]河北省第四建筑工程有限公司,河北石家庄050051

出　　处：《空间结构》2024年第3期79-87,51,共10页Spatial Structures

基　　金：河北省自然科学基金项目(E2021208010);石家庄市科学技术研究与发展计划项目(216160147A)。

摘　　要：筒仓仓顶施工中多采用施工支撑平台作为仓顶支撑体系,但大多施工支撑平台只适用于固定直径的筒仓,利用率较低.为解决这一问题,提出了一种空间钢桁架施工支撑平台,通过模块化设计,使其可以应用在18 m、24 m、26 m、28 m、32 m和34 m直径的筒仓工程中.考虑满布荷载和偏心荷载对空间钢桁架施工支撑平台的影响,运用ABAQUS软件对34m直径的支撑平台进行了设计分析,并基于结果对其余直径的支撑平台进行了有限元分析.结果表明:偏心荷载对空间钢桁架施工支撑平台受力更为不利;空间钢桁架施工支撑平台具有足够的稳定承载力,最大稳定应力比为0.92;随着施工支撑平台直径的减小,其最大稳定应力比呈减小趋势.Construction support platform is usually used as the support system during the construction of silo roof.However,most construction support platforms are only suitable for the silo with fixed diameters,which leads to low utilization.To solve this problem,a steel space truss construction support platform was proposed in this paper.Through modular design,it can be applied to silo projects with a diameter of 18 m,24 m,26 m,28 m,32 m and 34 m.Considering the effect of full and eccentric load on the support platform,the steel space truss support platform with a diameter of 34m was designed and analyzed by ABAQUS software.Based on the results,the finite element analysis of support platforms with other diameters was carried out.The results show that the eccentric load is more disadvantageous to the construction support platform,and the steel space truss construction support plaform has sufficient stability bearing capacity with the maximum stability stress ratio of o.92.With the decrease of the diameter of the support platform,the maximum stablility stress ratio tends to decrease.

关 键 词：筒仓 施工支撑平台 空间钢桁架 模块化设计 节点设计 有限元分析 

分 类 号：TU393.3[建筑科学—结构工程]