Research on the test method for composite threshold of subway platform door

Abstract

At present, subway platform doors have become the standard configuration of Chinese subways due to the advantages of energy saving, environmental protection, passenger safety, and improvement of the waiting environment. In order to solve the problem of insulation failure of traditional platform door thresholds, threshold manufacturers use composite materials with their own insulating properties to manufacture composite thresholds. Instead of the aluminium alloy and stainless steel structures commonly used in the industry, the composite threshold uses polymer composite as the basic carrier, and then covers the aluminium alloy panel on the surface of the basic carrier. The non-metallic material of the composite threshold has a unique advantage in insulation, but its mechanical properties still need to be verified by experiments. In view of the lack of test method for the compound threshold of subway platform doors, this paper formulates the method for the composite threshold of platform door based on the test method of escalator steps. PWS-20 electro-hydraulic servo cascade fatigue testing machine was used as the test equipment. The static load test and dynamic load test were carried out on the composite threshold samples respectively. When a force of 1000N is applied for the static load test, the maximum deflection value is 0.919mm. After 1 million cycles of dynamic load test with a non-interfering resonance force wave with a frequency of 5 Hz and a pulsating load between 50N and 1000N, no cracks were observed in the sample. For the composite threshold made of other materials, this test method can also be used to carry out static load test and dynamic load test.