简支单箱双室梯形结合梁的畸变效应研究

发布时间：2018-03-10 14:00

本文选题：桥梁工程　切入点：结合梁　出处：《重庆交通大学学报(自然科学版)》2014年05期 　论文类型：期刊论文

【摘要】：为研究钢-混凝土单箱双室梯形结合梁的畸变效应,根据荷载分解法从偏心竖向荷载中分解出独立的畸变荷载,采用ANSYS软件对其畸变变形机理进行了研究,并对横隔板及结合面相对滑移对畸变效应的影响进行了分析。主要结论为:单箱双室结合梁的畸变变形包括反对称的第一畸变变形和正对称的第二畸变变形;端横隔板对减小第一畸变变形及应力作用显著,但对第二畸变效应基本无影响;跨中横隔板则可使第一、二畸变变形及应力均明显降低;结合面相对滑移使畸变变形及应力明显增大。因此结合梁应设置端横隔板和跨中横隔板,其它位置的中横隔板可少设或者不设,且在畸变效应分析时应考虑结合面滑移的影响。
[Abstract]:In order to study the distortion effect of steel-concrete single box trapezoidal composite beam, an independent distortion load is decomposed from eccentric vertical load by the method of load decomposition, and the distortion mechanism of the beam is studied by ANSYS software. The influence of the relative slip of the transverse diaphragm and the bonding surface on the distortion effect is analyzed. The main conclusions are as follows: the distortion deformation of the single box and double chamber composite beams includes the antisymmetric first distortion and the normal symmetry second distortion; The end transverse diaphragm has a significant effect on reducing the first distortion and stress, but it has no effect on the second distortion, while the span transverse diaphragm can reduce the first and second distortion and stress obviously. The relative slippage of the bonding plane increases the distortion deformation and stress obviously. Therefore, the end transverse diaphragm and the span transverse diaphragm should be set up in the combined beam, while the middle transverse diaphragm in other positions may be set less or not, and the effect of the slip of the bonding plane should be considered in the analysis of the distortion effect.
【作者单位】：石家庄铁道大学土木学院;石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室;清华大学土木水利学院;
【基金】：国家自然科学基金项目(51108281) 河北省自然科学基金项目(E2014201138) 河北省高等学校科学技术研究项目(ZD2014025)
【分类号】：U441

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