Field estimation method and simulation estimation method for flatness and comfort of bituminous pavement

Abstract

The invention discloses a field estimation method and a simulation estimation method for flatness and comfort of a bituminous pavement. Various data information, such as time, experimental vehicle speed, the acceleration speed data of each test point, longitude and latitude of each test road section, and image data of a test lane, in a test process can be collected in real time by a data collecting instrument adopted by the field estimation method; relatively complete data information facilitates data selection and provides theoretic data basis for subsequent performance change of road. According to the simulation estimation method, a built finished vehicle model is very close to the movement rule of a practical vehicle, so that the movement character under motivation of road roughness can be better simulated; the operation speed of a software model on a computer is 4 to 6 times faster than the actual speed, the roughness of a tested road can be quickly estimated, the estimation method is relatively few in outdoor operation and relatively low in external influence, human and material resources can be effectively saved, the mounting process of a testing apparatus is avoided, and the estimation method is more simple and convenient and shorter in required time.

Description

technical field [0001] The invention belongs to the field of road use performance detection, and in particular relates to an on-site evaluation method and a simulation evaluation method for the smoothness and comfort of asphalt pavement. Background technique [0002] With the development of roads and people's in-depth understanding of road roughness, human beings have proposed a variety of roughness test and evaluation methods in the past century. These methods can be roughly divided into three categories: cross-section, reaction and subjective evaluation. Throughout the development process of the asphalt pavement roughness evaluation method, it can be divided into three stages: the first stage is mainly to find a method that can truly reflect the longitudinal section of the pavement, and the most considered factor in this stage is the pavement itself; the second stage In the third stage, researchers realized that the unevenness of the road surface was the main cause of vehi...

AI Technical Summary

Problems solved by technology

Among them, the one-quarter vehicle model is the single-wheel vehicle model, which is far from the actual vehicle, and cannot consider the rotation and roll of the vehicle; the half-vehicle model takes the two-axle vehicle as the research object, and only takes the left and right symmetry of the vehicle half of the vehicle is considered, the simplified vehicle model ignores the lateral overturning and rotation of the vehicle; the establishment of the multi-degree-of-freedom vehicle model has made great progress compared with the quarter vehicle model and half-vehicle model, but the theoretical calculation will very complicated

(2) Tire model problem

(3) Road model problem

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