Documents published in Scipedia

• Drive system innovation – winch development for moveable membrane structure

  M. Jenni

  membranes2023.

  
  

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• Technical evolution of a convertible pool roof on three expedition cruise ships for the shipping company Hapag Lloyd

  A. Hub, N. Rein

  membranes2023.

  
  

  • 45
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• Urban retractable roofs

  N. Kugel

  membranes2023.

  
  

  • 30
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• Between Structure and Architecture

  N. Baldassini, O. Guidet, K. De Ryce

  membranes2023.

  
  

  Abstract

  Thanks to their flexibility, lightness and robustness, textile works are often used to cover large spaces. Structural efficiency of tensile structures can usually be related to a double curvature geometry. However, the project of the new Brugge Stadium offers a new challenge: the realisation of a flat façade with porous zebra strips of different porosity. The strips are 45° inclined with alternating porosities to create visual zebra effect during day and night as it permits light to pass from both the inside and the outside. With this choice come several design issues. The porous meshes should be prestressed, with its uncommon angle of 45° oriented mesh and the structural span is too important for existing meshes. Consequently, a close collaboration with textile companies was necessary to develop a mesh tailored on the need of the project and on the architectural design intents. The design process followed several steps, among the most significant : 1) understanding of the structural challenges to develop a new product adapted to the project 2) definition of the design criteria related to the dynamic behaviour of flat facades, 3) comparison of a stiff and a soft supporting structure (straight cables) 3) interface of the façade to the main concrete structure of the stadium. In the final design, the membrane is supported by a steel structure diagonally arranged to follow the pattern of the membrane arranged in 35-metre long strips. The steel beams inclined by 45° are preferred to the cable solution: the complications due to pretension are limited, the connection details can be designed to merge visually with the strips, the forces applied to the concrete structure are limited. A special mesh was developed to guaranty the 45% porosity required by the architect and the structural requirement for a 6m span diagonal strip : this design process hints at future design possibilities for textiles structures that could match the architectural intents with some R&D and a direct collaboration with the textile industries.

  Abstract
  Thanks to their flexibility, lightness and robustness, textile works are often used to cover large spaces. Structural efficiency of tensile structures can usually be related [...]

  • 7
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• Practical implementation of a thermo visco elastic material model for the design and analysis of ETFE structures

  A. Bown, A. Cabello

  membranes2023.

  
  

  • 9
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• Beyond bending: tension. Membrane structures II

  J. Llorens

  membranes2023.

  
  

  Abstract

  Jürgen Hennicke [1] challenged the designers of structural membranes stating that "Structural membranes, if not designed as such, require an imposing steel structure". Responding to this challenge, a comparative study has been launched to assess the impact on the design efficiency of considering or not the structural principles of membranes, that are: only tension, funicularity, curvature and pre-stress. In a previous paper (J.Llorens, 2023 [2]) the general approach of the research and the first results have been presented. This paper shows more cases to complete the most usual repertoire.

  Abstract
  Jürgen Hennicke [1] challenged the designers of structural membranes stating that "Structural membranes, if not designed as such, require an imposing steel structure". [...]

  • 8
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• HydroSKIN: Climate-resilient Membrane Façade Prototyping

  C. Eisenbarth, W. Haase, L. Blandini, W. Sobek

  membranes2023.

  
  

  • 52
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• Main Canopy of Islamic Complex, Putrajaya, Malaysia – A Testimony to Excellent Performance of PTFE Membrane under Tropical Climate

  M. Sing, K. Choong, A. Che Malid, C. Ng

  membranes2023.

  
  

  Abstract

  This paper describes a landmark membrane structure where the surface appearance has been able to be maintained after years in service. The membrane structure is the main canopy structure located at the courtyard of Islamic Complex, Putrajaya, Malaysia. It is made using PTFE membrane which is known for its excellent durability. The construction process of the main canopy together with the mini canopy which consists of a group of four funnel-shape membrane structure made using PVDF membrane will be presented in this paper. The paper will also touch on the performance of PTFE membrane in humid tropical weather condition like Malaysia.

  Abstract
  This paper describes a landmark membrane structure where the surface appearance has been able to be maintained after years in service. The membrane structure is the main canopy [...]

  • 10
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• Development of Air-inflated Lifting Equipment

  K. Hincz

  membranes2023.

  
  

  Abstract

  The research aimed to develop air-inflated equipment for lifting catamaran components during construction. The main structural parts of a newly developed catamaran are two hulls and three closed boxes. The three boxes connect the hulls and hold the deck. Different construction procedures were analysed to connect the main structural parts. One possibility is to float the hulls and the three boxes one by one on the water, lift the boxes to the required position with inflated tubes or pillows and connect the parts. Air-inflated tubes with various geometry and internal pressure have been analysed with the help of the Dynamic Relaxation Method. The deformed shape of the floating tubes, the membrane stresses, and the lifting forces were determined.

  Abstract
  The research aimed to develop air-inflated equipment for lifting catamaran components during construction. The main structural parts of a newly developed catamaran are two [...]

  • 41
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• Structural Membrane of Levante Stadium Cable Roof

  E. Montes, A. Solar, I. Sánchez, J. Llanera, A. Bilbao

  membranes2023.

  
  

  • 11
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