A test method for the relationship between load position and bridge response

Abstract

The invention relates to a test method, in particular to a method for testing a load position. The method comprises the following steps of: A, arranging more than two strain sensors on the surface of a bridge at intervals and connecting the strain sensors with a dynamic strain acquisition module to acquire strain data of the bridge; B, arranging more than two deflection sensors at the bottom of the bridge at intervals and connecting the deflection sensors with a dynamic deflection acquisition module to acquire deflection data of the bridge; C, arranging a laser distance measurement sensor at the head or the tail of the bridge, and connecting the laser distance measurement sensor with the dynamic deflection acquisition module to measure the load position; and D, connecting the dynamic strain sensors, the deflection sensors and the laser distance measurement sensor with a computer, wherein the computer can generate a curve graph of the response relation of the load position and the bridge according to the acquired data.

Description

technical field [0001] The invention relates to a testing method, in particular to a testing method of a load position. Background technique [0002] At present, the general test method in China is to estimate the average speed of the moving load according to the time of vehicle loading, and roughly estimate the relationship between the position of the moving load and the response of the bridge structure according to the corresponding relationship between time-average speed-response of the bridge structure. corresponding relationship curve. This often has large deviations and does not provide an accurate match between the location of the moving load and the response of the bridge structure. [0003] Abroad, such as the "STS-WiFi Engineering Structure Wireless Test System" of BDI, an American bridge diagnostic company, can use the test method to obtain the one-to-one correspondence between the position of the moving load on the bridge and the response of the bridge structure...

AI Technical Summary

Problems solved by technology

Due to the difference in tire pressure, the circumference of the tire changes, so the test accuracy of the test method provided by this set of equipment is not high.

In addition, because the load position indicator is installed on the car, it can only be tested through wireless transmission, and it cannot be simply combined with existing equipment, especially traditional wired test equipment, and often has the problem of asynchrony

In order to achieve synchronous testing, it is necessary to purchase a complete set of testing equipment, which will inevitably result in a large amount of capital investment

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