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发生在世界上,尤其是发生在我国的一系列大地震震害分析表明,结构型式对于建筑物的破坏特徵和其抗震能力的强弱有较大的影响。建筑业方面的技术进步促进了现代抗震结构的建立,其中金属结构获得了广泛的应用。为了建立和完善金属结构新结构型式,提高金属结构的可靠性,减少抗震费用,降低材料消耗和建筑造价,解决途径之一就是采用预应力金属结构。本文研究了预应力金属结构在动荷载作用下的工作特点。指出了预应力对结构构件和整个建筑物动力特性的有利影响,给出了经济效益方面的资料,提出了使用预应力金属结构的参考意见。
The earthquake damage analysis of a series of large earthquakes occurred in the world, especially in China, shows that the structure type has a greater impact on the damage characteristics of buildings and the strength of their anti-seismic capacity. Technological progress in the construction industry has promoted the establishment of modern seismic structures, in which metal structures have been widely used. In order to establish and improve the new structure of metal structures, improve the reliability of metal structures, reduce seismic costs, reduce material consumption and building cost, one of the solutions is to use prestressed metal structures. This paper studies the working characteristics of prestressed metal structures under dynamic loading. The beneficial effects of prestressing on the structural components and the dynamic characteristics of the entire building are pointed out. The data on economic benefits are given, and the reference opinions on the use of prestressed metal structures are proposed.