Thesis supervisor: Lajos Kisgyörgy
Location of studies (in Hungarian): BME Út- és Vasútépítési Tanszék Abbreviation of location of studies: BMEUV
Description of the research topic:
The detailed description of the performance and the deterioration processes of road pavements is fundamental for design and maintenance. Currently the practice in Hungary is well behind the one of the developed regions. Due to this backwardness, road construction handles the available sources very wastefully, which causes significant increase of costs even on the level of national economy. The need for energy, material, and finance can be greatly decreased by applying sound data and models at technological decisions. To create the necessary knowledge base the available data sources must be accessed, and a continuous monitoring system should be implemented exploiting the potential of modern digital technology. The theoretical models as a base of forecast and decisions are also part of this knowledge base.
The goal of the PhD research is the formation of a monitoring system with sensors built into the pavement and the connecting digital data collection and procession, and of the development an analysis methodology suitable to describe and quantify the deterioration of the pavement structure. The methodology to be developed primarily focuses on the load bearing failure of asphalt pavements, because its goal is to provide a practical analysis tool to optimize life time costs of pavements as well as to choose the optimal time and technology of maintenance activities.
The research has two parts. First, it forms a monitoring system to quantify the relevant parameters of the evaluation of the pavement conditions, using the most modern sensors which can be built into the pavement. Among the monitoring methods are the different strain measurements as well as measurements of water content and temperature. The configuration and calibration of the monitoring system is a task to be handled in the frames of the research. The data collected by other existing monitoring systems of roads (WIM, ÚTMET, NÚSZ, ADDT, PHF, etc.) are also included into the monitoring system. Second, the research analysis the interaction between the effects acting on the pavement and the deterioration of the pavement with digital models validated by real data. The model must be able to recognize the critical conditions of pavement faults (Fault Analysis), to forecast the conditions to the life time of the pavement, and to consider the effects of maintenance interventions.
Main work tasks of the research:
Determination of fault types and their relevant parameters,
Description of fault mechanisms by the above parameters,
Development of a diagnostic system to measure the value of the above parameters,
Development of the design of a montioring system to continuously evaluate the state of the road pavement,
Development of deterioration models of road pavements, with prediction of future states and consideration of the effects of maintenance activities.
The research connects to the ongoing projects of the Department of Highway and Railway Engineering.
Number of students who can be accepted: 1
Deadline for application: 2018-05-31
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
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