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本文介绍了保定体育馆点支承带悬臂网架结构在静力分析和抗震验算方面的情况,并对点支承带悬臂网架的特性进行了讨论。文中根据内力计算结果,分析了该网架在使用荷载作用下的受力特点,对计算方法进行了比较,阐述了网架吊装及吊装内力分析中几个值得注意的问题。介绍了该网架在进行横向和水下方向的抗震验算中所采用的近似计算方法。最后,就点支承带悬(?)网架结构在受力上的合理性,适应温度变化和支座沉陷的能力、有利于网架施工等方面的特性进行了讨论;提出了适当放宽网架拼装精度要求的问题与大家商榷,以利于网架施工,促进网架的推广。
This paper introduces the static analysis and seismic checking of the cantilever grid structure of the support belt of Baoding Stadium, and discusses the characteristics of the cantilever grid of the point support belt. Based on the calculation results of internal forces, this paper analyzes the force characteristics of the grid under the action of the load, compares the calculation methods, and expounds several issues worthy of attention in the analysis of the lifting and loading of the grid. The approximate calculation method used in the anti-seismic checking of the grid in the lateral and underwater directions is introduced. Finally, the rationality of the force supported by the suspension (?) grid structure of the point support, the ability to adapt to the temperature change, the ability of the support sinking, the construction of the grid structure, etc. are discussed; an appropriate relaxation grid is proposed. The problem of assembly accuracy requirements is discussed with everyone, so as to facilitate the construction of the grid and promote the promotion of the grid.