摘要
为分析钢框架-预制再生混凝土墙板结构体系在低周反复荷载作用下的抗震性能及其受力机理,在拟静力试验研究的基础上,采用ABAQUS程序展开非线性分析,重点分析并对比了各试件的滞回曲线、骨架曲线、变形特征,有限元分析结果与试验结果吻合较好。在此基础上,考虑墙板厚度、再生混凝土强度等级、高跨比、轴压比4个影响参数,进行参数扩展分析。研究结果表明:钢框架-预制再生混凝土结构的极限承载力随墙板厚度的增加和再生混凝土强度的提高而增大,墙厚从80mm增加到110mm时,结构极限承载力提高了12.8%;再生混凝土强度从C25增加至C40时,结构极限承载力增加了9.0%;随着高跨比的增加,结构的初始刚度和极限承载力都显著减小,高跨比从1.048增加到1.238时,极限承载力降低了17.37%;而钢柱轴压比变化对结构的初始刚度和极限承载力影响不显著。研究结果可为钢框架-预制再生混凝土墙板结构体系的进一步研究及其工程应用提供一定的参考依据。
In order to analyze the anti-seismic performance and mechanical mechanism of steel frame-precast recycled concrete wall structure system under low cyclic loading, the ABAQUS program is used to analyze the nonlinear analysis based on the quasi-static test. The research mainly focuses on analyzing and comparing the hysteresis curve, skeleton curve and deformation characteristics of each specimen, the results of finite element analysis are in good agreement with the experimental results. On the basis of the results, considering 4 parameters including the thickness of shear wall, the structure of the recycled concrete strength grade, the ratio of high span and axial compression, the paper makes research on the expansion of parameters. The results show that the increase of wall thickness and the improved strength of the recycled concrete can enhance the limit bearing capacity of steel frame precast concrete structure, when the wall thickness increases from 80 mm to 110 mm, the ultimate bearing capacity of the structure increases by 12.8%, and when the strength of recycled concrete increases from C25 to C40, the ultimate bearing capacity increases by 9.0%; with the increasing of depth span ratio, the initial stiffness and the ultimate bearing capacity can be significantly reduced, high span ratio increased from 1.048 to 1.238, the ultimate bearing capacity decreased by 17.37%; while the change of the ratio for the steel column axial compression does not have significant effect to the structure in terms of the initial stiffness and ultimate bearing capacity. The results can provide some references for the further study of steel frame-prefabricated recycled concrete wall structure system and its engineering application.
作者
郭宏超
李亚楠
刘云贺
孙立建
Guo Hongchao;Li Yanan;Liu Yunhe;Sun Lijian(School of Civil Engineering and Architecture,Xi'an University of Tectmology,Xi'an,710048,China)
出处
《应用力学学报》
CAS
CSCD
北大核心
2018年第6期1400-1406,1430,共8页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金项目(51308454)
中国博士后科学基金项目(2013M542371)
陕西省博士后自然科学基金
陕西省住建厅建设科技专项(2014-K12)
关键词
钢框架
预制墙板
再生混凝土
抗震性能
有限元分析
steel frame
prefabricated wall
recycled concrete
seismic performance
finite element analysis
