Monitoring device for settlement cavity value of medium-low-speed magnetic suspension low track bearing-rail beam and roadbed

Abstract

The invention discloses a monitoring device for a settlement cavity value of a medium-low-speed magnetic suspension low track bearing-rail beam and a roadbed. The monitoring device comprises an inductive strainometer and an inductive sensor testing instrument. The inductive strainometer comprises a ground anchor threaded steel bar set, a lower flange plate, an induction coil, an upper flange plate, an anchor plate and a magnet. The roadbed can drive the induction coil to settle synchronously when settlement happens. A bearing-rail beam bottom slab can drive the magnet to settle synchronously when settlement happens. When the settlement generated by the roadbed is different from the settlement generated by the bearing-rail beam bottom slab, the magnet and the induction coil cut each other to generate currents, and therefore the settlement difference value of the bearing-rail beam bottom slab and the roadbed can be obtained through the inductive sensor testing instrument. According to the monitoring device, data reading is conducted outside a closed loop of the roadbed and prevented from being influenced by the closed loop, the large transportation load of a train, and track panel space limitation of the top of the bearing-rail beam, and the settlement difference value between the bearing-beam rail bottom slab and the roadbed can be observed and measured at any time.

Description

technical field [0001] The invention belongs to the field of structure of medium and low-speed maglev low-mounted lines, and more specifically relates to a monitoring device for the void value monitoring of rail-supporting beams and subgrade settlement of low-medium-speed maglev low-mounted lines. Background technique [0002] Medium and low-speed maglev rail transit is a new type of transportation. At present, there are few research results at home and abroad, and there are even fewer lines in operation around the world. At present, there are only the commercial operation line of the medium and low speed maglev railway in Japan in March 2005-Eastern Hills Line and the commercial operation line of the medium and low speed maglev railway in South Korea in June 2014. At present, China's medium and low-speed maglev transportation only has the National University of Defense Technology test line, the Qingchengshan test line, and the Tangshan test line, but there are no formal lin...

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, in order to solve the problem that the conventional wheel-rail railway settlement void monitoring device cannot be used for monitoring the void value monitoring of the low line rail bearing beam and roadbed settlement of the low-speed maglev traffic project, the present invention proposes a medium Low-speed maglev low-mounted line rail beam and subgrade settlement void value monitoring device. This structure should not only avoid the problems of manual measurement caused by the complete closure of maglev rail transit, large train running volume, and limited rail row space, but also ensure measurement accuracy. and the structural integrity of the rail bearing beam without affecting the safe operation of the maglev train

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