A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Innovative Lightweight Steel (LWS) System braced with Ultra-High Strength (UHS) Steel Bars
The main scope of this thesis was the development of innovative solutions for lightweight steel construction with higher structural, thermal, and environmental performances, in the framework of the Italian project "ECCELSA". To this aim a new load force resisting system was developed, which mainly consists of cold-formed steel frame braced by pre-tensioned ultra-high strength steel bars in "V" configuration. To complete the system ad hoc pre-tensioning devices and hold-down devices were designed. Moreover, two solutions for the building envelope, which minimize the thermal bridges in the innovative system were developed and thermal performances were evaluated through the simulation in COMSOL software. The energy demand of a prototype building, considering both solutions for the building envelope was calculated, by means of simulation in EnergyPlus environment. A wide experimental campaign was carried out to study the seismic behaviour of the innovative wall system, including tensile tests on structural materials, creep tests on ultra-high strength steel, bar-nut assembly tensile tests and full-scale wall tests. The experimental tests were conducted at Laboratory of Department of Structures for Engineering and Architecture of University of Naples "Federico II". The obtained results demonstrate a satisfactory experimental response in terms of stiffness, strength, and deformation capacity, confirming the theoretical predictions. To prove the validity of the solutions developed and analyse the production processes and the execution phase, a prototype building was designed and erected. The design phase followed an integrated approach, thanks also to the BIM model developed.
Innovative Lightweight Steel (LWS) System braced with Ultra-High Strength (UHS) Steel Bars
The main scope of this thesis was the development of innovative solutions for lightweight steel construction with higher structural, thermal, and environmental performances, in the framework of the Italian project "ECCELSA". To this aim a new load force resisting system was developed, which mainly consists of cold-formed steel frame braced by pre-tensioned ultra-high strength steel bars in "V" configuration. To complete the system ad hoc pre-tensioning devices and hold-down devices were designed. Moreover, two solutions for the building envelope, which minimize the thermal bridges in the innovative system were developed and thermal performances were evaluated through the simulation in COMSOL software. The energy demand of a prototype building, considering both solutions for the building envelope was calculated, by means of simulation in EnergyPlus environment. A wide experimental campaign was carried out to study the seismic behaviour of the innovative wall system, including tensile tests on structural materials, creep tests on ultra-high strength steel, bar-nut assembly tensile tests and full-scale wall tests. The experimental tests were conducted at Laboratory of Department of Structures for Engineering and Architecture of University of Naples "Federico II". The obtained results demonstrate a satisfactory experimental response in terms of stiffness, strength, and deformation capacity, confirming the theoretical predictions. To prove the validity of the solutions developed and analyse the production processes and the execution phase, a prototype building was designed and erected. The design phase followed an integrated approach, thanks also to the BIM model developed.
Innovative Lightweight Steel (LWS) System braced with Ultra-High Strength (UHS) Steel Bars
campiche, alessia (author)
2021-04-15
campiche, alessia (2021) Innovative Lightweight Steel (LWS) System braced with Ultra-High Strength (UHS) Steel Bars. [Tesi di dottorato]
Theses
Electronic Resource
Italian , English
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