Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Full Scale Structural Test Program for Prefab Modular Construction
As the prefab modular construction is gaining more popularity, there is a growing need to accurately predict the performance of the “modules stack” and their interconnectivity under extreme loading conditions such as strong earthquakes or high winds. Due to the uniqueness of the assemblies and connections used in the volumetric modules, especially in a high-rise context, it is essential to establish a framework in which both experimental and analytical models are used in tandem to fully evaluate the overall structural system’s performance. Together they can help the engineering team gain more confidence in the structural system’s integrity under severe excitations. In this case study, a full-scale test program is discussed which was integrated into the design process of a thirty story prefab modular highrise in Oakland, CA. Twenty-two story residential floors over eight-story podium. Monotonic and cyclic tests of several structural sub-assemblies were carried out in collaboration with independent structural testing laboratories. Once the full-scale test results were gathered and processed, analytical models in high-fidelity FEA software packages were calibrated to accurately represent the experimental results. The “acceptance criteria” for the modular system’s performance was established on multiple levels. Using the “sub-structuring technique” a typical modular level was isolated from the superstructure to conduct analytical simulations on module stacks. This approach helped with reduced computational runtime and enabled faster module design iterations without losing accuracy. The sub-assemblies were modeled using combinations of line elements and semi-rigid hinges. Utilizing performance based design (PBD) in conjunction with full-scale testing of critical structural components helped to verify the capability and performance of modular assemblies to withstand 2.75% inter-story drift under MCE and their continuous elastic behavior under extreme building deformation.
Full Scale Structural Test Program for Prefab Modular Construction
As the prefab modular construction is gaining more popularity, there is a growing need to accurately predict the performance of the “modules stack” and their interconnectivity under extreme loading conditions such as strong earthquakes or high winds. Due to the uniqueness of the assemblies and connections used in the volumetric modules, especially in a high-rise context, it is essential to establish a framework in which both experimental and analytical models are used in tandem to fully evaluate the overall structural system’s performance. Together they can help the engineering team gain more confidence in the structural system’s integrity under severe excitations. In this case study, a full-scale test program is discussed which was integrated into the design process of a thirty story prefab modular highrise in Oakland, CA. Twenty-two story residential floors over eight-story podium. Monotonic and cyclic tests of several structural sub-assemblies were carried out in collaboration with independent structural testing laboratories. Once the full-scale test results were gathered and processed, analytical models in high-fidelity FEA software packages were calibrated to accurately represent the experimental results. The “acceptance criteria” for the modular system’s performance was established on multiple levels. Using the “sub-structuring technique” a typical modular level was isolated from the superstructure to conduct analytical simulations on module stacks. This approach helped with reduced computational runtime and enabled faster module design iterations without losing accuracy. The sub-assemblies were modeled using combinations of line elements and semi-rigid hinges. Utilizing performance based design (PBD) in conjunction with full-scale testing of critical structural components helped to verify the capability and performance of modular assemblies to withstand 2.75% inter-story drift under MCE and their continuous elastic behavior under extreme building deformation.
Full Scale Structural Test Program for Prefab Modular Construction
Kazemzadeh, Hessam (Autor:in)
Structures Congress 2020 ; 2020 ; St. Louis, Missouri (Conference Cancelled)
Structures Congress 2020 ; 709-719
02.04.2020
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Full Scale Structural Test Program for Prefab Modular Construction
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