钢管再生混凝土结构受压与抗震性能研究进展

Research progress on compressive behavior and seismic performance of recycled aggregate concrete filled steel tube structure

再生混凝土作为一种绿色混凝土,与其他材料结合而形成的组合结构成为研究的热点。钢管再生混凝土结构就是其中之一。分别在构件和结构两大研究层面上综述了国内外关于钢管再生混凝土的研究进展,分析了短柱、长柱和框架的受压与抗震受力特性,指出了钢管再生混凝土在构件、结构两大研究层面上的不足,并展望了未来的研究趋势及方向。已有成熟的研究结果表明:总体上,基于钢管再生混凝土柱的静力受压强度和抗震性能指标,再生混凝土可以应用于钢管混凝土承重结构之中,从而有望高效地解决建筑垃圾污染和天然粗骨料短缺的问题。

As a green concrete,recycled aggregate concrete combined with other materials to form composite structures becomes a research hotspot.Recycled aggregate concrete filled steel tube（RACFST） is one of composite structures.An overview about the development of RACFST structure at component level and structure level was completed,the behavior features of compression and seismic resistance about short column,long column and frame were analyzed,the deficiency at research level of component and structure in RACFST was indicated,and the research tendency and direction of RACFST structure in the future was prospected.By the present mature studies,it is shown that based on strength in static compression and seismic performance indexes of RACFST column,recycled aggregate concrete can be used in capacity-bearing structure of concrete filled steel tube,so the pollution of construction waste and shortage of nature coarse aggregate is likely to be efficiently solved.