圆钢管钢纤维再生混凝土短柱轴压承载力有限元分析  

Finite Element Analysis of Axial Compressive Capacity of Round Steel Pipe Steel Fiber Recycled Concrete Short Column

作　　者：董志勇 雷劲松[1] 李大东 DONG Zhiyong;LEI Jinsong;LI Dadong(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010

出　　处：《水利与建筑工程学报》2025年第1期41-47,101,共8页Journal of Water Resources and Architectural Engineering

基　　金：四川省自然科学基金项目(2022NSFSC0388)。

摘　　要：为深入探究圆钢管钢纤维再生混凝土短柱在轴压作用下的承载性能,利用有限元软件ABAQUS建立12个圆钢管钢纤维再生混凝土短柱模型。通过数值模拟,计算得出构件的破坏模式及荷载-位移关系曲线,并与试验结果进行对比,结果表明:随着再生骨料取代率增加,试件承载能力逐渐降低;随着钢纤维掺量的增加,试件承载能力逐渐提高,但体积率大于0.9%时试件承载能力出现降低现象;随着混凝土强度等级增加,试件的承载能力逐渐提高,且混凝土强度等级对试件承载能力的影响最为显著。所建模型在破坏形态及承载特性方面与试验吻合良好,该模型能较好地满足实际要求。In order to further explore the bearing performance of round steel tube steel fiber recycled concrete stub columns under axial compression,12 models of round steel tube steel fiber recycled concrete stub columns were established by using the finite element software ABAQUS.Through numerical simulation,the failure mode and load-displacement relationship curve of the component are calculated,and compared with the test results.The results show that with the increase of the substitution rate of recycled aggregate,the bearing capacity of the specimen gradually decreases.With the increase of steel fiber content,the bearing capacity of the specimen gradually increases,but the volume ratio is greater than 0.9%,and the bearing capacity of the specimen decreases.With the increase of concrete strength grade,the bearing capacity of the specimen gradually increases,and the influence of concrete strength grade on the bearing capacity of the specimen is the most significant one.The model is in good agreement with the test in terms of failure mode and bearing characteristics,indicating that the model can better meet the requirements of simulation analysis of the actual test.

关 键 词：钢管再生混凝土 短柱 轴压承载力 钢纤维掺量 有限元分析 

分 类 号：TU392.3[建筑科学—结构工程] TU528.572