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：
以能量变分原理为基础，综合考虑箱形梁满足应力自平衡的剪力滞、剪切变形和转动惯量等多重因素的影响，推导出箱梁的自由振动方程及自然边界条件。通过算例将本文解析计算结果与ANSYS有限元计算结果进行了比较。结果表明，两者计算结果吻合良好，论证了本文计算方法的正确。所得公式比以往箱形箱梁自振特性计算理论有一定发展，并得出了一些对工程设计有意义的结论；在剪力滞效应的作用下，箱形梁的固有频率减小幅度较大，不能忽略；剪力滞效应随频率阶次的升高而变大，随着跨宽比的减小而增大。
英文摘要：
Based on energy variation principle,the differential equation of free vibration and the corresponding boundary conditions of box girder with consideration for the shear lag effect meeting self equilibrated stress,shear deformation as well as rotational inertia were induced.The ANSYS finite element solutions were compared with the analytical solutions by calculation examples and the validity of the proposed approach was verified.The obtained formulas developed the shear lag theory.Some meaningful conclusions for engineering design were obtained.The decrease extent of each order natural frequency of the box-girder beam is great under the shear lag effect.The shear lag effect of box girder increases when frequency order rises,and increases while span-width ratio decreases.
同期刊论文项目
同项目期刊论文
Simple formulate for distortional buckling load of liffed channel aluminium alloy members under axia
Closed-form solution to thin-walled box girders considering effects of shear deformation and shear l
Closed-Form Solution for Shear Lag Effects of Steel-Concrete Composite Box Beams Considering Shear D
Closed-form Solution to Thin-Walled Box Girders Considering the Effects of Shear Deformation and She
Analysis of free vibration characteristic of steel-concrete composite box-girder considering shear l
Free vibration characteristics of steel-concrete composite continuous box girder considering shear l
Correlation research between landslide thrust and invading width of rock for rock-socketed anti-slid
Zhi-wu Yu. Application of a fast stochastic calculation method on seismic analysis of isolated struc
An efficient and accurate method for calculating stochastic seismic response of non-proportionally d
Nonlinear Finite Element Analysis for Compressive Capacity of Interior Constrained Square Concrete-F
Possible existing seismic analysis errors of long span structures and bridges while utilizing multi-
Field measurement and analysis of train-induced vibration of "building-bridge integration" structure
Notes about calculation models for seismic analysis of long-span isolated structure under multi-poin
Multi-point seismic motions based on focal mechanism and considering local site multi-layer soil eff
Failure behavior and influencing parameters of cold-formed thin-walled steel members with rectangula
期刊信息
位置：