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Research and development services and related consultancy services

Bundesanstalt für Straßenwesen | Published September 24, 2016  -  Deadline November 8, 2016

The German road network consists mainly of roads with asphalt inclusion. With a projected increase of transport performance in particular in road transport, according to traffic interconnection forecast made in 2014 of about 39% by 2030 and the impact of projected climate change with extreme weather events such heat waves and tropical nights, the weather-related influences are more on the asphalt superstructure construction. The results of previously conducted research projects show that shorten without material adaptation preservation cycles, which would lead not only to higher maintenance costs to a higher impairment of network availability. In order to arrive at robust conclusions of this research project are used to design existing asphalt locations in terms of their thermophysical properties new to achieve a high resistance to high temperatures. The aim is to check to what extent can be reached by material adaptation reducing the vulnerability of the asphalt against the projected impacts of climate change. The basic concept of the project is to improve the thermo physical properties of asphalts for cover, binder and base course and to face a standard asphalt inclusion.

Research and development services and related consultancy services

Bundesanstalt für Straßenwesen | Published October 7, 2016  -  Deadline November 23, 2016

Improving safety in the road transport sector has the consequence that the risk of property damage, injuries and deaths falls. However, the introduction of any measure that contributes to this risk reduction, at a cost. The cost of an action must therefore be weighed against the benefits gained in risk reduction, but this proves to be difficult. For particular pain, suffering and loss of quality of life as a result of a traffic accident can not be easily expressed in monetary terms for the purpose of balancing, because this accident can only be subjectively estimated. A general review of these effects is not readily possible. A useful characteristic which in road safety plays an important role in investment decisions and cost-benefit analysis, is the willingness to pay for risk reductions. Here, people are asked how much money they are willing to pay to reduce z. B. the risk of a particular injury. In this way, a specific value can be determined. In empirical investigations of this characteristic is particularly important factors influencing the level of willingness to pay. The accident cost accounting in Germany currently contains no information about the willingness to pay for road safety and therefore no evaluation of intangible costs from road accidents. The main objective of the project is an empirical study of willingness to pay for road safety, taking into account relevant factors. The findings are incorporated inter alia in the German accident costing and thus made comparable on an international level.

Research and development services and related consultancy services

Bundesanstalt für Straßenwesen | Published September 24, 2016  -  Deadline November 17, 2016

15.0621 / 2015 / ERB "validation of the model tunnel based on the results of larger fire tests" In the research project FE 15.0539 / 2011 / ERB ( "Studies on the optimization of longitudinal ventilation systems for road tunnels based on the development of a model tunnel") was built a model tunnel 1:18 and used for first experimental fluid mechanics studies z. B. for smoke spread. Further development of the structured model with a view to future processing real Fragegestellungen for configuration and operation of ventilation systems initially provides a detailed validation using available real data to ensure that the data obtained in the model tunnel and in the numerical simulation as a collateralised basis for decision can be used. A suitable data basis make for a represents the regularly as part of acceptance of ventilation systems conducted fire tests are carried out in the framework of selectively flow measurements in cross-sectional center. For a comprehensive validation, these data have to be added to a recording of the flow conditions over the entire tunnel cross section, and therefore close to the wall as well as results of larger experiments under fire through collaborative projects. These results are to be transmitted suitable considering fluid mechanical relationships in the model scale. For validation are selected scenarios in terms of an immediate possible later use, with their relevant parameters (eg. As the tunnel geometry, the considered fire load and the ventilation operation with respect to) be transferred to, as required by the 2006 Safety RABT level.

Research and development services and related consultancy services

Bundesanstalt für Straßenwesen | Published September 13, 2016  -  Deadline November 3, 2016

In addition to the usual damage based bridge inspection takes place under the term Intelligent bridge the development of an adaptive system for the continuous provision of relevant information for a holistic review state through the use of suitable sensors in conjunction with analysis and evaluation methods. It will allow online references to anticipated changes in state. In combination with forecasting and structural models and integration of available information from databases so that the basis for a reliability-oriented and preventive maintenance management is provided. As part of the Innovation Programme Street research projects were funded, which dealt with the development of new concepts and technologies for intelligent bridge. In "Digital Test field highway" relevant developments are demonstrated. Sensor-controlled measuring and evaluation has been installed at a newly built 4-span prestressed concrete bridge Bridge in AK Nürnberg. The building serves as a monitoring system that bridge specific characteristics acquired and processed in flowing traffic. The findings serve as a basis for evaluation and forecast of the state as well as the reliability of the structure and its components. The system is operated under a multi-year study program. The aim is to demonstrate the functionality and applicability of the Intelligent Bridge the Reliability-centered assessment of the state of road bridges as the basis for ensuring safety in a holistic and sustainable conservation planning. The project includes the development of data collection strategies and evaluation methods for the installed sensor network. It will build on an existing bridge models to reading-based probabilistic models in conjunction with an automated implementation and further developed the sensor / sensor network in this respect.

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