Bridge vibration simulation equipment of bridge for both highway and railway

Abstract

The invention provides bridge vibration simulation equipment of a bridge for both the highway and the railway. The bridge vibration simulation equipment comprises a fixing base (1), fixed supports (2), springs (3) fixed to the supports (2), frequency-adjustable motors (8) fixed to the support (2), an eccentric wheel (4) which is connected to the motor (8) and can adjust the eccentric distance anda tray (7) fixed to the springs (3), a connecting rod (6) is fixed to the lower portion of the tray, and idler wheels (5) are arranged at the lower end of the connecting rod (6), and are in contact with the eccentric wheel (4). By means of the bridge vibration simulation equipment of the bridge for both the highway and the railway, vibration caused by train driving under different frequencies anddifferent amplitudes can be precisely simulated, and the bridge vibration simulation equipment is applicable to experimental analysis of the influence of vibration on members in a construction phase and an operation phase.

Description

technical field [0001] The invention relates to a bridge vibration simulation device for a road-rail dual-purpose bridge, which belongs to the field of train vibration simulation for road-rail dual-purpose bridges. Background technique [0002] The road-rail bridge is a kind of bridge commonly used in my country, which can be used by railway trains and road vehicles to pass together. Since the founding of New China, my country has built a number of large road-rail bridges, such as Wuhan Yangtze River Bridge and Nanjing Yangtze River Bridge, which have played a milestone role in the development of my country's transportation industry. When trains on the railway layer pass by the road-rail dual-purpose bridge, the structure will vibrate to a certain extent, which will have a certain impact on other components of the bridge. In recent years, with the continuous improvement of my country's high-speed rail technology, the form of bridge vibration caused by the running of trains ...

AI Technical Summary

Problems solved by technology

This brings about a problem. The construction of the superstructure must be carried out without interrupting the traffic on the railway level. The impact of bridge vibration caused by trains on the construction of the superstructure is much greater than that during the operation period of the superstructure. The impact of vibration must be Carry out detailed simulation

At present, there is no equipment for bridge vibration simulation of road-rail dual-purpose bridges at home and abroad. The existing large-scale vibration tables in China consume a lot of energy and are large in size, and the efficiency of vibration testing for small components is low; while domestic small-scale vibration simulation Most of the equipment is used for teaching experiments or turbulence vibration simulation during vehicle transportation. This type of equipment has a large vibration frequency range and poor pertinence. At the same time, the amplitude range that can be provided is small, generally not exceeding 20mm, which is difficult to meet the amplitude of bridge vibration caused by trains. Require

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