Känslighetsanalys av en modell för asfaltsdeformation

Download

Increased commercial traffic volume, higher axle load limit, more frequent use of wide tyres, and a tendency towards higher tyre pressure have resulted in increased rates of rutting on asphalt pavements. Strain in asphalt pavements, caused by heavy traffic, is described by different models and serves as a basis for rut prediction. Prediction is however problematic because of varying and uncertain conditions. Studying the change in model output for a given change in input helps when trying to understand the importance of a correct input. In this report, it is shown how strain depends on compressibility, axle load, contact pressure, and, in some cases, variation in lateral position. Different variables affect the results in different ways. Results are therefore dependent on the choice of variables and the accounting area. The results, formulated from different perspectives, describe the significance of a variables influence on strain measurement without comparison in any definitive manner.

LATEST NEWS


2018-06-13

International Conference on Electric Road Systems starts today

Electric Road Systems (ERS) is a relatively new concept with many initiatives on the way. To learn from each other and stimulate new collaborations the Swedish Research and Innovation Platform for Electric Roads arranged the first international conference...


2018-05-18

Same survey of road users’ attitudes in 50 countries

At the Road Safety on Five Continents Conference, RS5C, one entire session presented a large survey of road users' attitudes in 38 countries. Results show large differences between countries in many areas, both regarding behavior and attitudes. A new survey...


2018-05-17

Good results with alcohol interlock program according to Swedish study

An alcohol interlock program makes it possible for drink driving offenders to continue their everyday lives. In a Swedish study most of the participants were satisfied with the program and experienced improved health. They also reported drinking alcohol more...


2018-05-16

Traffic safety in the spotlight

Today the Conference Road Safety on Five Continents (RS5C) opened in Jeju Island, South Korea. More than 220 participators have come from all over the world to present findings and learn about traffic safety. Dr. Young Tae Kim, Secretary-General of the...


2018-04-17

VTI will develop simulators for ambulance staff

VTI has initiated a pilot study for paramedics with the Centre for Teaching & Research in Disaster Medicine and Traumatology and Linköping University. The aim is to give ambulance staff the opportunity to practice critical medical tasks in a moving vehicle in...


2018-04-12

Unique electrified road opens in Sweden

The world’s first electrified road recharging the batteries of cars and trucks while driving opened in Sweden. The Swedish Minister for Infrastructure, Tomas Eneroth, was at the formal inauguration of the electrified road on April 11, 2018. VTI is one of 22...