不同配箍率钢筋地聚物混凝土梁受剪性能试验研究与分析  

Experimental study and analysis on shear performance of reinforced geopolymer concrete beams with different stirrup ratios

作　　者：惠存[1] 马泽亚 杨飞[1] 海然[1,2] 柳明亮 HUI Cun;MA Zeya;YANG Fei;HAI Ran;LIU Mingliang(School of Intelligent Construction and Civil Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China;School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Shaanxi Academy of Building Science Co.,Ltd.,Xi′an 710082,China)

机构地区：[1]中原工学院智能建造与建筑工程学院,郑州450007 [2]河南科技大学材料科学与工程学院,洛阳471023 [3]陕西省建筑科学研究院有限公司,西安710082

出　　处：《建筑结构》2025年第3期41-46,共6页Building Structure

基　　金：国家自然科学基金(52208226);河南省重点研发专项(241111322000)。

摘　　要：为推广地聚物混凝土在工程结构中的应用,设计了3根不同配箍率的钢筋地聚物混凝土梁试件,研究其单调加载作用下的受剪性能,分析其受力破坏过程、破坏形态以及荷载-位移曲线等。采用ABAQUS软件建立了钢筋地聚物混凝土梁的有限元分析模型,对各试件的荷载-位移曲线、破坏形态的试验结果和模拟结果进行了对比分析。结果表明:各试件均为剪压破坏,相比配箍率为0.25%的试件,配箍率为0.29%、0.35%的试件的抗剪承载力提高了5.3%、10.3%;配箍率的增加对试件的跨中位移影响较小;随着剪跨比的增加,试件的抗剪承载力和刚度明显下降,塑性变形能力显著提升;试件抗剪性能有限元模拟结果与试验结果吻合较好。In order to promote the application of geopolymer concrete in engineering structures,three reinforced geopolymer concrete beam specimens with different stirrup ratios were designed to study the shear performance under monotonic loading.The failure process,failure mode and load-displacement curves were analyzed.The finite element analysis model of reinforced geopolymer concrete beam was established by ABAQUS software,and the test results and simulation results of load-displacement curves and failure modes of specimens were compared and analyzed.The results show that all the specimens are shear and compression failure.Compared with the specimens of 0.25%stirrup ratio,the shear bearing capacity of the specimens of 0.29%and 0.35%stirrup ratios increases by 5.3%and 10.3%.The increase of the stirrup ratio has little effect on the mid-span displacement of the specimens.With the increase of shear span ratio,the shear bearing capacity and stiffness of the specimens decrease significantly,and the plastic deformation capacity is significantly improved.The finite element simulation results of the shear performance of the specimens are in good agreement with the experimental results.

关 键 词：钢筋地聚物混凝土梁 配箍率 抗剪性能 破坏形态 有限元模拟 

分 类 号：TU398[建筑科学—结构工程]