| 变截面构件受撞击荷载作用时的动荷系数研究 |
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| 引用本文： | 王伟.变截面构件受撞击荷载作用时的动荷系数研究[J].中国西部科技,2011,10(17):24-25,51. |
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| 作者姓名： | 王伟 |
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| 作者单位： | 中铁第五勘察设计院桥梁分院,北京,102600 |
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| 摘 要： | 基于碰撞过程中能量无损失的假设前提下,利用积分法求解了空心圆截面、实心圆截面和矩形截面三种不同截面形式的变截面构件在撞击载荷作用下的挠曲线方程,进而求得撞击荷载以静荷方式作用于撞击处时弹性构件在该处的静位移。并从能量守恒原理入手,用积分法导出了上述三种不同变截面构件受撞击荷载作用下的动荷系数计算公式。这些公式各力学量意义明确,实用性强,可供工程技术人员参考。
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| 关 键 词： | 构件 变截面 动荷系数 撞击荷载 计算公式 |
变截面构件受撞击荷载作用时的动荷系数研究 |
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| Abstract: | Based on the assumption of zero energy loss in the process of collision,the deflection curve equation of component with three different variable sections,such as hollow circle,solid circle and rectangle,has been deduced under impact loading in the light of integral method.Then the displacement formula in the impact spot has been deduced under impact load as static load.Based on the energy-approach,the formula which calculated the dynamic-load coefficient for component with three different variable sections ... |
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| Keywords: | Bridge engineering Variable section Dynamic-load coefficient Impact load Calculation formula |
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