再生混凝土框架结构延性研究

Ductility of Recycled Concrete Frame Structure

基于近年来国内外有关再生混凝土材料、再生混凝土柱、梁、框架和节点的性能试验研究结果,本文首先详细分析了再生混凝土材料延性,然后在此基础上进一步分析了再生混凝土材料延性对再生混凝土框架结构,包括再生混凝土柱、梁、框架和节点延性的影响。结果表明:再生混凝土的延性较普通混凝土有所降低,受再生粗骨料品质、再生骨料取代率以及再生混凝土强度等级等因素的影响;再生混凝土材料延性降低对再生混凝土框架结构延性有一定的影响,经过合理设计,在实际工程中可以满足抗震要求。

Based on the test results on the performance of recycled concrete materials, the recycled concrete （RC） column, beam, frame and joint at home and abroad in recent years, this paper first analyzes the ductility of recycled concrete material, and then influence of ductility of the recycled concrete material on the recycled concrete frame structure is further studied, including the ductility of recycled concrete column, beam, frame and joint. The results show that the ductility of the recycled concrete is lower than those of normal concrete （ NC ） and are affected by the quality of recycled coarse aggregate, the replace rate of recycled aggregates and recycled concrete strength grade. The ductility decrease of recycled concrete material has a certain influence on ductility of recycled concrete frame structure, while it can meet the seismic requirements in practical engineering through the reasonable design.