电梯对重—导轨系统的抗震措施试验研究及分析

Experimental Research and Analysis on Aseismic Measure of Counterweight-rail System in Elevator

地震时,电梯对重脱轨主要由于导轨动力响应过大造成。为了解地震时电梯导轨在有无保持装置时的动力响应差异,对一段带有对重和导轨的局部足尺模型进行了振动试验,并利用有限元软件ANSYS对试验进行数值模拟。结果表明,有限元结果和试验结果吻合较好,证明了所建有限元模型的正确性;同方向同幅值地震激励时,安装保持装置的导轨动力响应比无保持装置的小,且保持装置使导轨动力响应有均化趋势,这些都会有效地防止实际地震时电梯对重脱轨。

During the earthquake, the derailment of counter-weight is mainly caused by excessive dynamic response of guide-rails. In order to know the difference of dynamic response of the guide-rail during the earthquake, we make the vibration experiment on a full-scale model with a counter-weight and guide-rails, we also make the numerical simulation in ANSYS. Test results show that the experiment and numerical simulation results are in good agreement; When the same direction and the same amplitude earthquake excitation, the dynamic response of the rail with keeping devices is smaller than the rail without, and the keeping device homogenize the dynamic response, all these can effectively prevent the derailment of the counter-weight during the earthquake.