地震载荷下岸桥跳轨相似模型研究

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (16) : 69-74.

论文

地震载荷下岸桥跳轨相似模型研究

李哲1，叶方平2，伍世英1，李欢1

作者信息 +

A study on the similar model of uplift of quayside container crane under seismic condition

LI Zhe1，YE Fangping2，WU Shiying1，LI Huan1

Author information +

文章历史 +

摘要

为了提高地震载荷下岸桥跳轨研究结果的准确率问题，基于简化的岸桥跳轨运动方程推导了岸桥原型与模型之间的相似关系，建立了岸桥的动力学相似模型，制作并开展了1:20岸桥比例模型的振动台试验，研究了不同地震波载荷条件下的试验模型监测点的响应值，分析了不同工况条件下岸桥轮轨压力随时间变化的规律，测试了岸桥比例模型在振动试验中的跳轨响应结果，最后结合有限元方法将试验结果与仿真结果进行了对比。结果表明：振动台试验中模型跳轨响应结果与有限元仿真中出现的跳轨的情况吻合，基于跳轨运动方程建立的相似关系是准确可靠的。该研究为大型结构相似模型设计提供了一种理论参考。

Abstract

In order to improve the accuracy of the investigate results of the quayside container crane's uplift under seismic conditions, the similarity relationship between the quayside container crane prototype and the model are deduced based on the equation of motion of the quayside container crane's uplift. The dynamic similarity model of the quayside container crane is established, and then the shaking table tests of the 1:20 scale model of the quayside container crane are made and carried out. Moreover, the response values of the monitoring points of the test model under different seismic conditions are investigated, which following, the law of wheel rail pressure changing with time are analyzed under the different cases, and the response results of the scale model of the quayside container crane are tested. Furthermore, the test results are compared with the simulation results by combining the finite element method. The results show that the response results of the model in the shake table test are consistent with those in the finite element simulation, and the similarity relationship is accurate and reliable which is established from the equation of motion. This study provides a theoretical reference for similar model design of large structures.

导出引用

李哲1，叶方平2，伍世英1，李欢1. 地震载荷下岸桥跳轨相似模型研究[J]. 振动与冲击, 2020, 39(16): 69-74

LI Zhe1，YE Fangping2，WU Shiying1，LI Huan1. A study on the similar model of uplift of quayside container crane under seismic condition[J]. Journal of Vibration and Shock, 2020, 39(16): 69-74

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