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Application of Cubic spline Function to Moving Load Identification on A Bridge 三次样条函数在桥梁移动荷载识别中的应用
moving load identification 移动荷载识别
Load identification research is vital to dynamic analysis and applications. 摘要荷载的辨识问题研究在动力分析和应用中具有重要意义。
moving loads identification 移动荷载识别
This paper presents a method determining analytical and process bandwidth in load identification. 本文研究在载荷识别中确定载荷的分析处理频带宽度的方法。
In back analysis,the unreasonable modality is not only helpless for the load identification,but also interferefering... 然而在工程实行中,常常是很难对作用于结构的外载荷作直接测量和计算。
In order to solve this problem, a dynamic load identification method about guyed mast should be established. 要解决这个问题，必须建立作用在桅杆结构上的动力风荷载的识别方法。
Firstly, by assumption and predigest of viscoelastic foundation model, plates and moving load, a mechanics model of system can be gained. 然后,把道面板周边的接缝视为板边的弹性支撑,考虑这种弹性支撑为刚性道面板的边界条件。
In this paper, load identification is studied in the time domain by combining the coupling method and the precise time integration method. 该文通过耦合方法与精细时程积分法的结合，对载荷辨识问题进行时域分析和推导。
A dynamic load identification method is proposed for proportional damping systems based on high precision direct integration scheme. 对比例阻尼系统给出了基于精细逐步积分法的动态载荷识别方法。
This paper is absorbed in the research of the nond estructive testing theory about airport rigid pavements,which is on semi_infinit e viscoelastic foundation to moving load. 以一种新的、更符合实际的力学计算模型-移动荷载下粘弹性地基板系统来研究场道的无损检测理论。
Based on Hamiton's principle, the coupling vibration of multi-span uniform beam subjected to moving load is analysed by using fitting beam vibration mode functions assumed modes. 摘要根据哈密顿原理，应用插值振型函数法，分析了多跨连续梁在移动荷载作用下的车桥耦合振动动态响应。经实例讨论分析，给出了多跨等截面连续梁在不同速度移动荷载作用下的数值结果。
The highly precise direct integration scheme is used for solving modal dynamic differential equation of the structure and a dynamic load identification method by the modal respondence is proposed. 采用无条件稳定的精细逐步积分法求解结构的模态动力学微分方程，构造了通过结构的模态响应直接反求荷载列阵的迭代算法。
Yet the additional information data used in the paper are obtained through calculation rather than direct measuring, which means necessary to solve a forced vibration problem of plate (direct problem) before load identification. 但本文所使用的附加信息数据事实上是通过计算而非测量得到的,因此在载荷反演之前需要解一个板的强迫振动问题(正问题)。
In the FEM simulation of the loading identification process, the bending moment maintains a constant amplitude, hut its direction is alterable. 在有限元仿真计算中，弯矩载荷的大小保持不变，但方向可调。
The time histories of ground responses and wave motions are presented, and it was found that significant wave propagations are generated when Mach number of moving load approaches or exceeds 1.0. 通过数值计算给出了地基表面振动的动力时程和三维波动场的分布，发现当移动荷载的马赫数接近或大于1.;0时地基中产生明显的波动传播现象。
For the first case,the self-characteristics of back analysis must be considered.In back analysis,the unreasonable modality is not only helpless for the load identification,but also interferefering... 大量算例表明,采用本文提出的准则和公式可以防止因模态选取不当而产生的伪解,避免计算中的数值病态,明显提高了动态载荷识别的成功率和精度。
Study on Load Identification and Power Matching of Excavator[A]Proceedings of the 2007 International Conference on Advances in Construction Machinery and Vehicle Engineering[C], 2007 . 程永强;蓝兆辉.;混合驱动调速系统的设计与实验[A]中国机构与机器科学应用国际会议论文集[C];2007
In order to evaluate the vibration along railway correctly, it is necessary to lucubrate the dynamic response of ground bearing the moving loads of vehicle. 为了正确评价轨道沿线环境的振动，有必要深入研究列车荷载作用下地基土的动力响应。