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Roadbed deformation monitoring model device under traffic load and experimental method

A model device and deformation monitoring technology, applied in the field of traffic engineering, to achieve the effect of reducing errors, high precision, and easy observation

Active Publication Date: 2016-03-30
HUBEI UNIV OF TECH
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  • Abstract
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Problems solved by technology

These two types of experimental principles are simulated by simulating the vibration waveform of the traffic load, and there is no scaled traffic load entity for the test

Method used

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  • Roadbed deformation monitoring model device under traffic load and experimental method
  • Roadbed deformation monitoring model device under traffic load and experimental method

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Experimental program
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Embodiment Construction

[0038] The roadbed deformation monitoring model device under traffic load of the present invention is composed of a model system, a detection system, a hydraulic system, and a circulation system;

[0039] The tempered glass box is placed on the level ground, and the brackets are fixed on both sides of the tempered glass box. A roadbed model is set in the tempered glass box, and the tempered glass is marked with a scale line, which is convenient for observing the settlement of the roadbed and constitutes a model system;

[0040] When laying the foundation, it is necessary to place the earth pressure cell and the acceleration sensor inside the foundation and below the road surface. After the pavement is laid, the displacement gauges are fixed on both sides of the support to observe the local settlement of the pavement, which constitute a monitoring system;

[0041] The hydraulic system is fixed on the top of the support, and the servo actuator arm is connected to the circulation...

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Abstract

The invention discloses a roadbed deformation monitoring model device under a traffic load and an experimental method, belonging to the field of traffic engineering. According to the invention, traffic loads in different speed requirements are simulated through changing of rotation speed of a rotating wheel; the volume of traffic flow is simulated through a vertical loading device; the sedimentation of a roadbed in a model box is observed with reference to scales of the model box through photography measurement equipment. In order to facilitate observation, foundation soil is layered, color powder is laid between every two layers of foundation soil, and comparison is made according to scales on tempered glass, so as to facilitate the observation for sedimentation changes of all layers. A data acquisition unit is used for acquiring data through a soil pressure cell and an acceleration sensor that are buried in the roadbed, and the acquired data can be used for dynamic response analysis on foundation soil. According to the invention, different volumes of the traffic flow of different roads are simulated according to different loading ways and rotating speeds of the wheel, the operation is simple, convenient and practical, and the defects of indoor experimental devices for simulating the traffic load at home are overcome.

Description

technical field [0001] The invention relates to a roadbed deformation monitoring model device and an experimental method under traffic load, belonging to the technical field of traffic engineering. Background technique [0002] With the rapid development of urban traffic in our country, the geotechnical engineering problems caused by traffic loads have attracted more and more attention. But now domestic traffic load laboratory test methods are mostly classified into two categories: one is the dynamic analysis of subgrade soil by dynamic triaxial test; the other is the simulation of traffic load by vibration test of low frequency servo loader. These two types of experimental principles are carried out in the form of simulating the vibration waveform of the traffic load, and there is no scaled-scale traffic load entity for the test. The present invention just fills up this blank. The invention changes the horizontal traffic flow into a circular motion, just uses the high spe...

Claims

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Application Information

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IPC IPC(8): G01C5/00G01B21/32
CPCG01B21/32G01C5/00
Inventor 李丽华杨俊超肖衡林马强肖本林刘永莉王翠英裴尧尧梅利芳文贝
Owner HUBEI UNIV OF TECH
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