预应力混凝土扁梁框架内节点的三维有限元模拟分析  

Three-dimensioal finite element simulative analysis of inner joints of prestessed concrete flat-beam frame

作　　者：杨迎春[1] 雷超[2] 

机构地区：[1]安徽农业大学工学院,合肥230036 [2]中国烟草总公司合肥设计院,合肥230009

出　　处：《安徽建筑工业学院学报（自然科学版）》2009年第5期22-25,共4页Journal of Anhui Institute of Architecture(Natural Science)

摘　　要：为了分析轴压比对预应力混凝土扁梁框架内节点抗震性能的影响,运用ANSYS软件,模拟了单调荷载作用下预应力混凝土扁梁框架内节点的荷载-位移曲线,并与相应的试验结果进行比较分析。在有限元模拟试验的扁梁框架内节点的基础上,用ANSYS软件模拟了未做过试验的不同轴压比下的扁梁框架内节点荷载-位移曲线,模拟结果表明,轴压比的增大在一定程度上可以提高试件的承载力,但是太大的轴压比则会使试件的延性不足,反而会对抗震不利。To analyze the impact of axial compression ratio on the seismic behavior of inner joints of prestressed concrete flatbeam frame, load-displacement curves of inner joints of prestressed concrete flat-beam frame under laterally monotonic load were simulated by ANSYS software, and the analysis results were compared with the experimental results. Based on the finite element analysis results, the load-displacement curves of inner joints of prestessed concrete flat-beam frame with different axial compression ratios were obtained through the simulative analysis with ANSYS software. It is demonstrated that, with the increase of axial compression ratio, the loading capacity of specimens can be improved in certain degree, but the ductility of specimens will reduce too much caused by too big axial compression ratio, which is disadvantageous to resist earthquakes.

关 键 词：预应力混凝土 扁梁框架内节点 ANSYS软件 轴压比 骨架曲线 

分 类 号：TU378.4[建筑科学—结构工程]