Your Project Technical data of the project Project title Koninklijke Vlaamse Schouwburg Physical Location KVS, Lakensestraat, Brussels Site owne City of Brussels Architect A.2R.C and B.O.A. Engineering office Verdeyen-Moenaert General contractor Willemen, Verstraete & Verhelst Length 55m With 25m Height 26m Volume 40220m³ Mass: difficult to estimate: as we are dealing with an historical building Why is this project important? This project concerns the renovation of the Royal Flemish Theatre in the center of Brussels and the construction of a second building nearby. The modernization of the KVS (Royal Flemish Theatre) and the construction of a new building fits into an ambitious scheme devised to provide the KVS and its company with the state-of-the-art facilities needed to produce top-quality performances. The restoration program covers all parts of the facades, roofs and exterior balconies in keeping with the original design by Jean Base (1887), as well as the remaining facade of the former arsenal (1780). The entrance hall, the foyer, and the grand staircase are also being carefully restored. Rebuild in 1958 within the existing building, the present auditorium no longer caters to current requirements in terms of stage design and visual comfort, so it is due to be demolished and replaced by a new one. The new hall has a capacity of 500 seats. The internal organization plays on the contrast between the oldest sections of the building and a mysterious object that might resemble a cocoon. Standing apart from the existing walls, the object will be separated from the foyer by an atrium criss-crossed by catwalks, extensions of the exterior passage, providing access to the theatre. This intervention restores the continuity that previously existed between the exterior passages and the inner spaces. From a technical point of view, the reinforced concrete structure of the new auditorium is conceived to be completely independent from the existing building. The modeling of this structure was done using ESA-Prima Win. Use of ESA-Prima Win Description of the technical questions to be solved with ESA-Prima Win: The model of the reinforced concrete theatre hall was made during the construction phase and gives us the answer to different technical questions. First of all, the 3D finite elements model enables us to estimate the influence of the eccentricity brought into the concrete structure by the geometry of the 4 levels of balconies. More precisely, we wanted to know the importance of the generated traction forces into the two symmetrical concrete walls. The traction forces have to be retaken in the foundation that is a screen of secants piles. Secondly, acting as a load takedown model, it was easy to obtain the loads on the foundations. Finally, the reinforcement of the columns, beams and slabs can now be designed using the calculated axial force, bending moment and shear force diagrams. Deflections can be controlled as well. A description of your experience with ESA-Prima Win when realizing the project: The introduction of the basic 2 dimensional geometry was done using the DXF interface. The interface was really appreciated, as we are generally disposing of the 2D Cad file before we start making the ESA-Prima Win model. After all, the geometrical part was the most intensive one: controlling if there were no double nodes, no overlaps, controlling the thickness of the 2D Macros. It is difficult to have a good view on the model. The load input consists of surface loads (2D distributed loads), some nodal and line loads (free loads) were used. The supports are vertical node supports. Once the structure being calculated, the results were easy to obtain and seemed to be realistic. Although, at some points non expected high stress concentrations are found due to discontinuities of the geometry, which is fair enough. Modules used: standard ESA-Prima Win modules 75 SCIA User Contest Catalog
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