Print Email Facebook Twitter Optimal traffic flow at the IJ, Amsterdam Title Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet Author Hofland, F.P.J. Contributor Vellinga, T. (mentor) Verheij, H.J. (mentor) Molenaar, W.F. (mentor) Bloemendal, M. (mentor) Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Programme Ports and Waterways Date 2016-09-19 Abstract The city of Amsterdam increases with approximately 10,000 inhabitants per year and Amsterdam-North is strongly under development attracting housing, employment and (re)creational activities. This is expected to induce a growth of 65% in pedestrians and cyclists, referred to as slow traffic. crossing the river IJ in 2025. The city ferry system, that currently facilitates the connection between the river banks for slow traffic, has almost reached its maximum. Therefore, the connection between the river banks of the IJ needs to be improved in order to meet the future demand of slow traffic by guaranteeing a fast and safe connection. This research investigates the possibility of bridges at the Java-island and the Stenen Hoofd providing a continuous available connection for slow traffic, considering the area between the Stenen Hoofd and the Schellingwouderbridge. The main goal is to determine the influence of the Java bridge and the Stenen Hoofd bridge on the passage time of the recreational fleet on water and pedestrians and cyclists crossing the bridges in 2025. As this is influenced by the bridge opening regime applied to these bridges, the optimal bridge opening regime is determined in case the Java bridge and/or the Stenen Hoofd bridge are present at the IJ. Finding the optimal bridge opening regime is an optimization process that is done by defining, evaluating and improving the performance of a certain bridge opening regime. The performance of a certain bridge opening regime is determined by executing simulations with SIVAK II. This model simulates the behaviour of the traffic flow of both vessels and road traffic within a network of (inland) waterways including hydraulic structures, like bridges. If the optimal bridge opening regime is applied to the Java bridge and the Stenen Hoofd bridge, the following can be concluded. The delay in travel time of the recreational fleet navigating between the Stenen Hoofd and the Schellingwouderbidge depends on the number of bridges. This delay can increase up to 14 minutes if both the Java bridge and the Stenen Hoofd bridge are present. An average number of four vessels has to wait prior to passing a bridge, which can increase up to 15. The mean waiting time for slow traffic, when being halted during bridge opening operations, amounts approximately five minutes. This corresponds with around 120 pedestrians and cyclists on average, which can increase up to 500, to be halted during a bridge opening operation. Concerning the influence of the presence of the Java bridge and the Stenen Hoofd bridge, it can be stated that the efficiency of the navigation flow of the recreational fleet increases when the number of bridges at the IJ is reduced. Furthermore, it can be stated that pedestrians and cyclists significantly benefit from the presence of bridges. As this study focuses on the impact of the optimal bridge opening regime on the navigation flow of the recreational fleet and slow traffic only, it is recommended to take other criteria into account as well when deciding on the number of bridges preferred to be present in 2025. These criteria are amongst others the influence of a certain bridge opening regime during peak hours, the accessibility of the city districts, life cycle management, long term plans and costs and benefits. Subject IJoptimal traffic flowSIVAKrecreational fleet To reference this document use: http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902 Part of collection Student theses Document type master thesis Rights (c) 2016 Hofland, F.P.J. Files PDF MSc thesis F.P.J. Hofland ... ) copy.pdf 58.31 MB Close viewer /islandora/object/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902/datastream/OBJ/view