ce/papers最新文献

The railway bridge in Prague under Vyšehrad is a steel riveted structure with a lower deck from 1901 connecting the right and left banks of the Vltava River. The bridge is double-track and is located on a national track included in the TEN-T system. This is the transit corridor Nuremberg – Pilsen – Prague – Brno – (Vienna, Bratislava, Poland). It is therefore one of the busiest railway bridges in the Czech Republic. The bridge is a cultural monument.

At the moment, it is also the best-known and most discussed railway bridge in the Czech Republic. The bridge has been in service for more than 120 years and its expected lifespan has long been exceeded. The railway needs to increase the track capacity. At the same time, it is being discussed what to do with the heritage-protected bridge. Repair? Replace? Shift? These are the questions and challenges facing the Railway Administration.

Footbridges with prestressed concrete deck, which are suspended on steel arch ribs, are described in terms of the structural arrangement, static function and erection. These bridges create stiff structural systems which guarantee the bridges' favourable dynamic response. While steel arch ribs allow easy erections, the concrete deck guarantees structural integrity. The footbridges are structurally efficient, they are light and transparent, corresponds to the scale of the landscape and all structural members have human dimensions. They were erected with a minimum impact on the environment. Their structural arrangement is illustrated on examples of four bridges.

This paper outlines the planning of a bridge in central Germany. Scheduled for construction in mid-2024, this new bridge is a replacement for a century-old pedestrian bridge crossing the Lahn river.

The proposed bridge will be an airtight-welded arch bridge, employing steel cross-sections in both the arch and tension member. Designed as a single-span, the arches extend 48.0m over the Lahn. The two arches have a flat rise of 4.65m, supporting the roadway through 9 inclined flat steel hangers.

This paper delves into the structural engineering aspects, exploring challenges inherent in the design process. An examination of the parametric design process, facilitated through 3-D modeling in Rhino® and Grasshopper®, will be presented, along with insights into their interface with the finite element modeling software, RFEM®. This process enables an engineering approach to form-finding and structure optimisation through iterative design checks for various elements and stages of the structural analysis.

Once constructed, the Baku White City pedestrian bridge will be a landmark for the newly developed White City district in the east of the Capital. Designed by UNStudio, the bridge crosses the highway of 8^th November Avenue and connects the newly build city to the seaside, forming a wide promenade.

Due to the pending construction of the mall as future bridge support, the bridge had to be redesigned. A cantilevering viewing platform will highlight the bridge's ending.

This paper covers the structural design of the architecturally shaped cable stayed bridge, supported through a 46 m high A-shaped, slightly curved pylon. Based on 3-D modelling in Rhino® and Grasshopper®, the FE-software SOFISTIK® is used both for cable force finding and bridge design.

The structural system, steel structure's specific detail for cable connection and its design approach have been documented.

The construction of a new double-track steel railway arch bridge over the Elbe river, which replaced the original single-track bridge from 1966, has significantly increased the capacity, speed, and smoothness of railway traffic in Pardubice. This 140-meter-long, three-span bridge was realized as part of the modernization and double-tracking of the Pardubice - Hradec Králové line between 2021-2024. Its construction, coupled with the provisional use of the original bridge, represents a remarkable engineering feat

Responsible for 70% of the global CO₂ emissions, infrastructure has a significant impact on our climate and the related consequences. Bridges are a major keystone of the infrastructure and take a leading position in its decarbonization. In this framework, low-carbon emission steels play an important role. Low-carbon emission steels, like ArcelorMittal's XCarb® recycled and renewably produced steels, are already available on the market. Combining scrap and renewable electricity, it offers very low levels of CO₂ emissions per ton of finished steel. The present paper describes how different steel solutions can be combined to lower the material input, to simplify the construction process and to reduce the maintenance efforts in bridge construction. The impact of efficient design has been assessed by a Life-Cycle Assessment (LCA) for bridge solutions with small and medium spans of up to 40 m. The paper concludes with a summary of recently realized bridge projects in Poland.