摘要
依据汶川地震中双连梁剪力墙和深连梁剪力墙结构的实际震害对比,建立采用两种不同连梁结构形式的双肢剪力墙试件的有限元模型,运用有限元分析软件进行非线性计算,对比分析双连梁与深连梁剪力墙模型的破坏形态、极限承载力、滞回性能、延性及耗能能力。研究结果表明:与发生剪切型破坏的深连梁相比,双连梁屈服后剪力墙整体结构仍具有一定的抗侧变形能力,双连梁可以承受较大的塑性转角,成为剪力墙结构良好的耗能构件;双连梁剪力墙结构的位移延性及耗能能力均优于深连梁剪力墙结构,但其极限承载力和抗侧刚度较深连梁剪力墙结构低。
Based on the comparison of real seismic damage occurred in the shear wall structures with dual and deep coupling wall-beams in Wenchuan earthquake,the finite element analysis of the 4-story,1/3 scale shear wall specimens with two different types of coupling beams were carried out to clarify which type of coupling beams is better for seismic resistance of shear walls.The finite element models of the double-leg shear wall specimens were established and the nonlinear finite element computations were executed respectively.The failure mode,ultimate load capacity,hysteresis properties,ductility and ability of energy dissipation of the shear wall models with dual and deep coupling beams were compared and analyzed.The computation results demonstrate that compared with the deep coupling beams that mainly fail in shear,the shear wall with dual coupling beams still behaves the lateral resistance even after the yield of dual beams,and the dual beams can bear larger plastic rotations working as the good structural members of energy dissipation in whole structures;both the ductility and the ability of energy dissipation of whole shear wall structures with dual coupling beams are better than that of shear wall structures with deep coupling beams,but the load capacity and the lateral rigidity are relatively lower.
出处
《土木工程学报》
EI
CSCD
北大核心
2010年第S1期211-216,共6页
China Civil Engineering Journal
关键词
双连梁
深连梁
剪力墙
非线性有限元
抗震性能
dual coupling beam
deep coupling beam
shear wall
nonlinear finite element
seismic behavior
