集中荷载作用正弦波纹腹板工字钢梁整体稳定性研究
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摘要
采用有限元特征值屈曲方法计算跨中集中荷载作用下正弦波纹腹板工字钢梁临界力与临界弯矩,分析了波纹腹板的波长、波幅、腹板高度及厚度等几何参数对临界弯矩、稳定系数的影响;波纹腹板工字钢梁因截面参数不同,主要发生整体侧向弯扭、腹板鼓曲、翼缘板翘曲、翼缘板翘曲与腹板鼓曲组合等四种失稳形式;各种临界弯矩及稳定系数曲线,对波纹腹板钢梁设计有一定参考意义.
Finite element eigenvalue buckling method is used to calculate the critical force and the critical moment of I-beams with sinusoidal corrugated webs under mid-span concentrated load,and the influences of geometric parameters such as wavelength,amplitude,web height and thickness on the critical bend moment and stability factor of the beam are analyzed.Due to the difference of cross-section parameters,overall lateral bending and torsion,web bending,flange warping,flange warping and web drum bending,these four kinds of instability forms happen on the corrugated web I-beam,and various of critical bending moments and stability coefficient curves have certain reference meaning for the design of the corrugated web steel beam.
Finite element eigenvalue buckling method is used to calculate the critical force and the critical moment of I-beams with sinusoidal corrugated webs under mid-span concentrated load,and the influences of geometric parameters such as wavelength,amplitude,web height and thickness on the critical bend moment and stability factor of the beam are analyzed.Due to the difference of cross-section parameters,overall lateral bending and torsion,web bending,flange warping,flange warping and web drum bending,these four kinds of instability forms happen on the corrugated web I-beam,and various of critical bending moments and stability coefficient curves have certain reference meaning for the design of the corrugated web steel beam.
引文
[1]黄海洋,朱浦宁,黄炳生,等.不同波纹腹板钢梁弹塑性整体稳定性能对比分析[J].钢结构,2017,32(7):60-66.
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[8]沙翰宇,黄炳生.均布荷载下简支波浪腹板H形截面钢梁弹性整体稳定性研究[J].建筑结学报,2016(S1):186-191.
[2]张哲,李国强,孙飞飞.波纹腹板H型钢组合梁抗弯性能[J].土木工程学报,2014,47(5):34-39.
[3]郭彦林,王小安,张博浩,等.波浪腹板钢结构设计理论研究及应用现状[J].工业建筑,2012,(7):1-13,73.
[4]陈华婷,迟啸起,黄艳.正弦波形波纹腹板工字型钢板梁的抗剪强度[J].公路交通科技,2013,30(5):38-46.
[5]ABBAS H H,SAUSE R,DROVER R G.Behavior of corrugated web I-grider under in plane loades[J].Journal of Mechanic,2006,132(8):806-814.
[6]郭彦林,张庆林,王小安.波浪腹板梁平面外稳定承载力设计理论与试验研究[J].土木工程学报,2010,43(11):17-26.
[7]陈航,郭彦林,张旭乔.波形腹板工字形梁截面翘曲惯性矩的推导[J].建筑钢结构进展,2016,18(2):8-16+60.
[8]沙翰宇,黄炳生.均布荷载下简支波浪腹板H形截面钢梁弹性整体稳定性研究[J].建筑结学报,2016(S1):186-191.