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近年来在国外的钢结构中,主要是屋架和公路钢桥,采用了利用高强度钢索的自应力钢结构,取得了节省钢材、降低造价的经济效果。我国也已在这方面开始了理论究研和论验工作。本文第一部分对自应力的性质作了简要的分析,第二部分对利用自应力的效果进行了分析和讨论,第三部分则介绍了国外自应力钢结构的发展情况并对我国在这方面的究研工作提出了建议。
In recent years, the steel structures in foreign countries, mainly the roof trusses and highway steel bridges, have adopted self-stressing steel structures that utilize high-strength steel cables and have achieved the economic effect of saving steel and reducing manufacturing costs. My country has also started theoretical research and experimental work in this regard. The first part of this article gives a brief analysis of the nature of self-stress. The second part analyzes and discusses the effect of using self-stress. The third part introduces the development of self-stressing steel structure in foreign countries. Research work put forward suggestions.