欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为研究Q460高强钢中厚板焊接H形柱的极限承载力，以国产Q460高强钢中厚板制作了6个足尺焊接H形柱进行轴心受压试验。6个H形柱均由火焰切割的21mm厚翼缘板与11mm厚腹板焊接而成。试件的主要参数为宽厚比（翼缘板宽厚比分别为3、5、7）与长细比（绕弱轴长细比分别为40、55、80）。为了考虑初始缺陷对轴压H彤柱极限承载力的影响，以同样的焊接工艺制作了相同截面的短柱用于测量残余应力。试验结果表明，Q460高强钢焊接H形柱稳定系数适用于我国现行GB50017-2003《钢结构设计规范》中b类截面柱子曲线。以试件的实测尺寸、钢材的力学性能建立有限元模型，分析预测试件的极限承载力。有限元模型以初始缺陷的形式考虑试件的初始挠度、初始偏心及焊接残余应力影响。分析结果表明，考虑初始缺陷的有限元模型可以较准确地预测轴心受压柱的极限承载力。
英文摘要：
An experimental study on the ultimate bearing capacity of axially compressed H-section columns of high strength steel is presented. Six H-section columns with 3 differently sized cross sections were tested to failure under axial loading. Specimens were welded from I l mm-thick web plates and 21 ram-thick flange plates of Q460 high strength steel made in China. Numerical models were established according to measured sizes of the members and the tension coupon test results. Initial geometric imperfections and the residual stress obtained from the accompanied residual stresses test were taken into account in the numerical analysis. According to GB 50017--2003 Code for design of steel structures, the experimental result shows that type b buckling curve is appropriate for welded flame-cut H-section columns of Q460 high strength steel. The numerical result with consideration of the effect of both residual stresses and geometric imperfections agrees well with the experimental result. Finally, further numerical calculations based on the measured residual stresses and assumed geometric imperfections are recommended as a supplement of the limited test data.
同期刊论文项目
同项目期刊论文
Shaking table model test and numerical analysis of a supertall building with high-level transfer sto
Studies of the performance of particle dampers attached to a two-degrees-of-freedom system under ran
Experimental and numerical study on the behavior of axially compressed high strength steel columns w
Experimental studies of the effects of buffered particle dampers attached to a multi-degree-of-freed
期刊信息
位置：