半预制再生混凝土构件受力性能试验  

Test on the mechanical behavior of semi-precast recycled concrete elements

作　　者：肖建庄[1] 姜兴汉[1] 黄一杰[1] 高歌[1] 

机构地区：[1]同济大学,上海200092

出　　处：《土木工程学报》2013年第5期99-104,共6页China Civil Engineering Journal

基　　金：国家自然科学基金(51178340);国家科技支撑计划(2008BAK48B03)

摘　　要：通过4根再生混凝土U形叠合梁、6根再生混凝土□形叠合柱的试验研究,探索施工方式和再生混凝土含量等因素对构件受力性能的影响。结果表明,半预制再生混凝土U形叠合梁的抗剪破坏形式和受力机理与现浇混凝土梁类似,相同剪跨比下的再生混凝土叠合梁抗剪承载力接近于再生混凝土现浇梁;半预制再生混凝土柱的耗能能力随着再生混凝土含量的增加而降低,不同的施工方式对试件的骨架曲线有一定影响,而再生混凝土柱承载力随芯柱尺寸的变化发生改变。In this paper, four semi-precast recycled concrete U-shaped beams and six semi-precast recycled concrete I^-typed columns were designed to test the shear and seismic behavior of semi-precast recycled concrete elements. The experimental factors were the construction methods and replacement ratio of recycled aggregates. The results show that the shear failure modes and mechanisms of semi-precast U-shaped beam were similar to those of the whole cast ordinary concrete beams. Shear capacity of semi-precast beams with the same shear-to-depth ratio was similar that of the cast-in- situ ones. For the []-typed columns, the energy dissipation capacity decreased with the increase of replacement ratio of recycled aggregates and the construction method affected the seismic performance. In addition, the load capacity of semi- precast columns changed with different dimensions of core columns.

关 键 词：半预制再生混凝土 U形梁 □形柱 抗剪性能 抗震性能 

分 类 号：TU375.4[建筑科学—结构工程]