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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

37卷

期数:

2020年04期

页码:

14-22

栏目:

出版日期:

2020-07-30

文章信息/Info

Title:

Elastic-plastic Buckling Behavior of Double-corrugated Thin Steel Plate Under Cyclic Shear Load

文章编号:

1673-2049(2020)04-0014-09

作者:

王宇航¹,杨均德¹,梁艳来²,兰涌森³,罗 伟³,邓 然¹

(1. 重庆大学 土木工程学院,重庆 400045; 2. 重庆工商职业学院,重庆 401520; 3. 中国船舶重工集团海装风电股份有限公司,重庆 401122)

Author(s):

WANG Yu-hang¹, YANG Jun-de¹, LIANG Yan-lai², LAN Yong-sen³, LUO Wei³, DENG Ran¹

(1. School of Civil Engineering, Chongqing University, Chongqing 400045, China; 2. Chongqing Technology and Business Institute, Chongqing 401520, China; 3. CSIC Haizhuang Wind Power Co., Ltd, Chongqing 401122, China)

关键词:

双波形薄钢板;  弹塑性屈曲;  拟静力试验;  抗剪承载力;  薄钢板剪力墙

Keywords:

double-corrugated thin steel plate;  shear capacity;  elastic-plastic buckling;  quasi-static test;  thin steel plate shear wall

分类号:

TU973.2

DOI:

10.19815/j.jace.2019.12040

文献标志码:

A

摘要:

为研究双波形薄钢板在达到或接近钢材屈服时的弹塑性屈曲行为,完成了4个不同螺栓间距的双波形薄钢板试件和1个单片波形薄钢板试件在往复剪切荷载作用下的拟静力试验。结果表明:设计合理的双波形薄钢板能够先达到全截面屈服抗剪承载力,然后在往复剪切荷载作用下交替发生弹塑性局部剪切屈曲,形成X形屈曲褶皱及撕裂裂缝而破坏; 双波形薄钢板的极限抗剪承载力大于单片波形薄钢板的2倍,最大提高约18%; 双波形薄钢板的滞回曲线表现出一定的“捏拢”现象,在其抗剪承载力达到峰值之后,随着滞回圈数的增加其抗剪承载力和卸载刚度退化明显,但其等效黏滞阻尼系数无显著下降; 双波形薄钢板在剪切荷载作用下可分为弹性、弹塑性局部屈曲以及承载力退化3个工作阶段,由于波形钢板的“手风琴”效应,双波形薄钢板基本不具备屈曲后抗剪承载力,其极限抗剪承载力状态即为弹塑性局部剪切屈曲状态。

Abstract:

In order to research the elastic-plastic buckling behavior of double-corrugated thin steel plate upon reaching or approaching steel yield stress, the quasi-static tests of four double-corrugated thin steel plate specimens with different bolt spacings and one single-corrugated thin steel plate specimen subjected to cyclic shear load were completed. The results show that the rationally designed double-corrugated thin steel plate can reach the full-section yield shear capacity firstly, and then the double-corrugated thin steel plate undergo elastic-plastic local shear buckling alternately under cyclic shear load, forming X-shaped buckling folds and tearing cracks to destroy. The ultimate shear capacity of double-corrugated thin steel plate is more than twice that of single-corrugated thin steel plate, and the maximum increase is about 18%. Hysteretic curve of double-corrugated thin steel plate shows a certain pinch phenomenon, and the shear capacity and unloading stiffness of double-corrugated thin steel plate degrade obviously with the increase of hysteresis number after the shear capacity reaches peak value, but its equivalent damping ratio does not decrease significantly. The double-corrugated thin steel plate can be divided into three working stages: elastic, elastic-plastic local buckling and shear capacity degradation. Due to the accordion effect of corrugated steel plate, the double-corrugated thin steel plate has not shear capacity increasing after buckling, and its elastic-plastic local shear buckling state can be defined as ultimate shear capacity state.

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相似文献/References:

[1]郑宏,杨飞颖,张维刚.钢板深梁屈曲分析[J].建筑科学与工程学报,2007,24(03):31.
　ZHENG Hong,YANG Fei-ying,ZHANG Wei-gang.Buckling Analysis on Steel Plate Deep Beam[J].Journal of Architecture and Civil Engineering,2007,24(04):31.

备注/Memo

备注/Memo:

收稿日期:2019-12-12
基金项目:重庆市自然科学基金重点项目(cstc2019jcyj-zdxm0088)
作者简介:王宇航(1985-),男,重庆市人,教授,博士研究生导师,工学博士,博士后,E-mail:wangyuhang@cqu.edu.cn。

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更新日期/Last Update: 2020-07-29