基于ABAQUS的半通缝三连梁受力性能有限元分析
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摘要
连梁作为剪力墙结构中抵抗地震作用的第一道防线,当形成小跨高比连梁时,易发生脆性破坏。为了改善小跨高比连梁的受力性能,提出一种新的连梁构造形式——半通缝三连梁。借助ABAQUS有限元分析软件,对跨高比为1.0的普通连梁、半通缝双连梁及半通缝三连梁进行受力性能对比分析。结果表明:半通缝三连梁在小震下可以提供较高的承载力,在大震下半通缝薄弱处破坏形成的三连梁对连梁延性性能有明显的改善,是一种较优的构造形式。
As the first line of defense against seismic action in shear wall structure,continuous beams are prone to brittle failure when forming a continuous beam with small span-depth ratio.In order to improve the mechanical properties of the deep coupling beam,a new form of continuous beam structure,three continuous beams with half through joints,is proposed.The comparison and analysis of the mechanical properties of the common beam,the semi seam double coupling beam and the semi seam three coupling beams with a span-depth ratio of 1 are carried out in this paper.The results show that the semi seam three coupling beams can provide high bearing capacity under the small earthquake,and the ductility performance of the coupling beams is obviously improved under the large earthquake.It is a better form of structure.
As the first line of defense against seismic action in shear wall structure,continuous beams are prone to brittle failure when forming a continuous beam with small span-depth ratio.In order to improve the mechanical properties of the deep coupling beam,a new form of continuous beam structure,three continuous beams with half through joints,is proposed.The comparison and analysis of the mechanical properties of the common beam,the semi seam double coupling beam and the semi seam three coupling beams with a span-depth ratio of 1 are carried out in this paper.The results show that the semi seam three coupling beams can provide high bearing capacity under the small earthquake,and the ductility performance of the coupling beams is obviously improved under the large earthquake.It is a better form of structure.
引文
[1]龚炳年,方鄂华.反复荷载下联肢剪力墙结构连系梁的性能[J].建筑结构学报,1988(1):34-41.
[2]徐志勇.半通缝连梁剪力墙结构抗震性能数值分析[D].青岛:青岛理工大学,2016.
[3]龚炳年,方鄂华.连系梁位移全过程试验与分析研究[J].建筑科学,1988(4):39-43.
[4]王春晖.半通缝连梁抗震性能数值模拟分析[D].青岛:青岛理工大学,2015.
[2]徐志勇.半通缝连梁剪力墙结构抗震性能数值分析[D].青岛:青岛理工大学,2016.
[3]龚炳年,方鄂华.连系梁位移全过程试验与分析研究[J].建筑科学,1988(4):39-43.
[4]王春晖.半通缝连梁抗震性能数值模拟分析[D].青岛:青岛理工大学,2015.