【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.更多还原

【Abstract】 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 platform has sufficient stability bearing capacity with the maximum stability stress ratio of 0.92. With the decrease of the diameter of the support platform, the maximum stablility stress ratio tends to decrease.更多还原