变截面梁在移动荷载作用下的动力响应

基金项目: 河北省高等学校科学技术研究项目“垮塌深水大跨桥梁交通应急浮桥抢修技术研究”（ZD2015081）

详细信息

Dynamic Response Analysis of Beams with Variable Cross-sections under Moving Loads

摘要: 变截面梁具有等强度、质量分布优化等优异的力学性能，广泛应用在桥梁工程中。按照2种边界条件（两端固支、一端简支一端弹性支撑），分别给出系统的控制方程，研究变截面梁承受移动荷载时的动力响应，并采用有限差分法对得到的精确理论解进行验证，分析相关参数。结果显示，两者吻合良好。
- 耦合振动 /
- 移动荷载 /
- 变截面桥梁
Abstract: Beams with variable cross-sections show excellent mechanical properties, such as equal intensity, the optimization of mass distribution, and it has been widely used in bridge engineering. In the study, control equations of system vibration according to two types of boundary conditions (both of the two ends of the beam are clamped, one end of the beam is simply supported and the other is elastically supported) were given to study the dynamic responses of beams with variable cross-sections under move loads. Furthermore, the comparatively precise theoretical solutions were verified by the finite difference method. The result shows that the solutions are well consistent with that of the finite difference method.
- coupled vibration /
- moving loads /
- beam with variable cross-section

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