A dynamic measurement device for road deflection value and a deflection beam for dynamic measurement of deflection value

Abstract

The invention relates to a dynamic measurement device for road deflection value and a deflection beam for dynamic measurement of deflection value. The deflection beam includes a support. There are at least three displacement measuring parts arranged at equal intervals on one side, wherein the displacement measuring part at the front is the head displacement measuring part, the displacement measuring part at the rear is the tail end displacement measuring part, and the head displacement measuring part is 1. The displacement measuring part between the tail end displacement measuring parts is an intermediate displacement measuring part, and the distance between the support and the head end displacement measuring part is greater than the deflection influence radius of the wheel to be measured road. The invention provides a deflection value dynamic measurement deflection beam which can complete the road deflection value measurement during the running process of a loading vehicle and a road deflection value dynamic measurement device using the deflection value to dynamically measure the deflection beam.

Description

technical field [0001] The invention relates to a road deflection value dynamic measurement device and a deflection value dynamic measurement deflection beam in the field of road deflection value measurement. Background technique [0002] The deflection value refers to the deformation of the roadbed / pavement before and after the load acts on the roadbed / pavement, and the calculation unit is 1 / 100 mm. [0003] Rebound deflection refers to the vertical rebound deformation value produced by the subgrade and road surface wheel gap position under the specified standard axle load B22-100. The Beckman beam is a common deflection beam for dynamic measurement of the rebound deflection value. The Beckman beam is made of aluminum alloy, which includes the beam body and the support for supporting the beam body. The beam body on the front side of the support It is called the forearm, and the beam body on the back side of the support is called the rear arm. Usually, the length ratio of t...

AI Technical Summary

Problems solved by technology

The existing method of detecting the rebound deflection value of the Beckman beam mainly has the following problems: at the beginning of each road section test, the loading vehicle needs to be parked on the testing road section, and after the L1 value is measured, the loading vehicle moves forward for a certain distance. After a certain distance, you still have to stop on the test road section, that is to say, the whole measurement process is a static measurement process, which leads to the existing deflection value measurement method can only be used in road conditions where there are no other vehicles running, such as When measuring the deflection value of the road, it is necessary to close the road in advance, which greatly affects the traffic and cannot be applied to the road conditions that have been opened and used by other vehicles

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