卷边Z型钢梁防止畸变屈曲的加固措施研究

RESEARCH OF REINFORCING MEASURES FOR PREVENTING DISTORTIONAL BUCKLING OF LIPPED Z-SHAPED BEAM

采用有限元软件ABAQUS对卷边Z型钢梁进行线弹性畸变屈曲分析,针对其畸变屈曲模态,在沿梁的长度方向加设一定数量的连杆或隔板来防止畸变屈曲的发生。通过有限元对加固后的Z型钢梁进行分析,比较各种加固措施,提出有效的加固方法。

Linear elastic finite element analysis on the distortional buckling of lipped Z-shaped beams is performed using ABAQUS. Certain amount of connected-bars or connected-slabs in special longitudinal direction of Z-shaped beams are used to prevent distortional buckling. FEM elastic analysis is conducted on strengthened Z-shaped beams： Comparisons are made between each strengthening measure and the most effective strengthening measure is proposed.