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进入80年代以来,我国钢管混凝土结构的研究和应用有了很大发展,在机理研究、结构设计、节点构造技术和施工工艺及试验等方面都取得了很大成果。特别是向管内高位抛落和低位泵送顶升两大不振捣浇灌混凝土的先进施工技术的实现,为我国进一步推广钢管混凝土结构,提供了十分有利的条件。目前,我国在工业与民用建筑及电力等工程中,钢管混凝土结构的开发应用已有一二十万平方米,遍布于我国寒冷地带到湿热的南方广大地区,并且出现了从单层单跨向多层多跨和高层发展,及从重型厂房向量大面广的中小型的轻型厂房发展的趋势,单项工程的规模也越来越大。这对于加快我国建设速度,满足我国基本建设中要大量节约钢材、木材、水泥三大主材的需求,发展我国大中型企业和乡镇企业,都有着明显的作用。为了顺应这一形势的发展,更好地把这一新型结构进一步推向广泛应用的新阶段,当前一个时期,完善试验研究手段、统一试验方法和评定标准,深化结构特性的研究,积极探讨简化设计和施工工艺,作好结构和施工等规范与应用手册的编制,使之达到结构设计和施工标准化、系列化、规范化、工业化目标,很值得引起重视。
Since the 1980s, the research and application of concrete-filled steel tubular structures in China have made great progress. Great achievements have been made in mechanism research, structural design, node construction technology, construction technology and tests. In particular, the realization of the advanced construction technology of casting concrete into the high-level drop in the pipe and pumping the concrete in the low position and lifting the concrete in the low position provides a very favorable condition for further popularizing the concrete-filled steel tube structure in China. At present, in the industrial and civil construction and power projects in China, the development and application of concrete-filled steel tubular structures has already reached 1.2 million square meters, spread all over China’s cold regions to the hot and humid southern regions, and has emerged from a single-story single span. Multi-tier multi-span and high-level development, as well as the development of small and medium-sized light-duty power plants with large scale of heavy-duty power plants, the scale of individual projects is also increasing. This has a significant role in accelerating the pace of China’s construction and satisfying the need for substantial savings in the three main materials of steel, wood, and cement in China’s capital construction and in developing large and medium-sized enterprises and township and village enterprises in China. In order to comply with the development of this situation and to further promote this new structure to a new stage of wide application, in the current period, it has improved the methods of experimental research, unified testing methods and evaluation standards, deepened the study of structural characteristics, and actively explored the simplification of The design and construction process, and the preparation of specifications and application manuals for structure and construction, so as to achieve the goals of structural design and construction standardization, serialization, standardization, and industrialization, are worthy of attention.