不锈钢管再生混凝土弯曲性能

进行12个不锈钢管再生混凝土试件和2个不锈钢管普通混凝土对比试件的试验研究,考察截面类型和再生骨料取代率对弯曲荷载作用下不锈钢管再生混凝土破坏形态、荷载-变形关系和受弯承载力的影响.结果表明,不锈钢管再生混凝土的弯曲性能与相应不锈钢管普通混凝土类似,但随着再生骨料取代率的增大,不锈钢管再生混凝土的受弯承载力有降低的趋势.在确定不锈钢和核心再生混凝土本构关系的基础上,利用基于有限元软件ABAQUS建立的理论模型对不锈钢管再生混凝土的弯曲性能进行了模拟,总体上模拟结果与试验结果吻合良好.

Flexural performance of recycled aggregate concrete filled stainless steel tube

To investigate the effects of sectional type and recycled aggregate replacement ratio on the failure pattern, load versus deformation relationship and bending moment capacity of recycled aggregate concrete filled stainless steel tube (RACFSST) under bending load, the tests on twelve RACFSST specimens and two concrete filled stainless steel tube (CFSST) specimens are carried out. The experimental results show that the flexural performance of RACFSST is similar to that of CFSST; however, the bending moment capacity of RACFSST decreases with the increase of recycled aggregate replacement ratio. Based on the determination of the constitutive model of stainless steel and core recycled aggregate concrete, the flexural performance of RACFSST is simulated by a finite element analysis model developed using the software ABAQUS, and the predicted results generally agree well with the measured ones.