In recent years, the use of steel light housing structural solutions made of cold‐formed thin‐wal... more In recent years, the use of steel light housing structural solutions made of cold‐formed thin‐walled profiles (CFS) is becoming increasingly popular. Lightness, high structural efficiency, durability, rapidity and simplicity of erection of the building and its finishes are some of the main advantages of these systems, which make them attractive and competitive with respect to more traditional constructional solutions. In these buildings, which do have a skeleton made of cold‐formed steel profiles completed by sheathings made of various materials, the key role of transmission of both vertical and horizontal loads from the floors to the foundation, is played by the shear walls. Recently, the University of Trento carried out a project aimed to develop an industrialized housing system made of CFS members. In this framework, experimental and numerical studies of the in‐plane lateral response of shear walls were performed. In particular, this paper summarizes first the experimental program and then it focuses on the main features of numerical models and on their validation in both monotonic and cyclic regime. The critical parameters governing the response of these complex systems are finally identified and discussed.
In dem europäischen Forschungsprojekt SlimAPP „Slim‐Floor Beams – Preparation of application rule... more In dem europäischen Forschungsprojekt SlimAPP „Slim‐Floor Beams – Preparation of application rules in view of improved safety, functionality and LCA” wurde ein umfassendes Versuchsprogramm zu Slim‐Floor‐Trägern durchgeführt, um ein tieferes Verständnis in das besondere Tragverhalten von Slim‐Floor‐Systemen zu bekommen. Das Versuchsprogramm umfasste Push‐out‐Versuche, Schubträgerversuche mit 4 m Länge, Biegeträgerversuche mit 6 m Länge und Biegeträgerversuche zur Bestimmung des Einflusses von Langzeiteffekten wie Kriechen und Schwinden. Durch die Wahl eines Basisquerschnitts und die Ausführung der verschiedenen Versuchsserien mit den gleichen Parametern und die Verwendung möglichst vergleichbarer Materialeigenschaften wurde eine Übertragbarkeit der Ergebnisse zwischen den Versuchskonfigurationen gewährleistet. Es werden die verschiedenen Versuchsserien, ihre Parameter und Ergebnisse im Einzelnen vorgestellt. Die Ergebnisse erlauben auch Schlussfolgerungen zum Tragverhalten von besonderen Verbunddübeln (CoSFB) und geben Erkenntnisse zum Trag‐ und Verformungsverhalten von Slim‐Floor‐Trägern gerade im Zusammenhang mit der Verdübelung. Ein solches Verständnis zum Tragverhalten von Slim‐Floor‐Trägern ist für eine gezielte effiziente und ökonomische Bemessung wichtig.
This paper deals with a contemporary integrated and sustainable construction technology for new r... more This paper deals with a contemporary integrated and sustainable construction technology for new residential buildings. Specifically, this research aims at developing innovative steel-timber hybrid structures which allow a rapid assembly of the individual prefabricated components, minimizing the construction times and limiting the costs of the work. The numerical analyses performed on a multi-storey building for social housing will be presented and discussed. The in-plane behaviour of the floors and shear walls will be analysed, considering in particular the types and arrangement of the different timber- and steel-timber joints. The connections to be used among the construction elements will be selected in order to develop a sufficient stiffness, ductility and bearing capacity according to the design criteria for seismic-resistant structures. These connections allow to enhance the on-site assembly operations, therefore working effectively also under harsh climatic conditions.
ABSTRACT The last years were characterized by a growing interest about the development of strateg... more ABSTRACT The last years were characterized by a growing interest about the development of strategies for the mitigation of the damages caused by accidental events. Accidental actions can be resisted by residual strength and alternate load path methods and combination of these strategies can lead to an effective and cost efficient design procedure for progressive collapse mitigation by redistributing the loads within the structure. One of the main objective of these strategies is the development of structural systems able to activate mechanisms to transfer the loads from the damaged to the undamaged part of the structure. This paper illustrates the preliminary work carried on within a European Research Project, aimed at developing new design concepts for steel-concrete composite frames against accidental actions. The first part of the study investigates the behavior of two geometrically different steel-concrete 3-D composite frames subjected to the loss of an internal column. Two full-scale experimental tests will be performed on a part of these structure. By simulating the total loss of the impacted column, the experiments enable investigation of the redundancy of the 3-D slab system in terms of activation of membrane effects. The present paper presents the preliminary study for the design of the tests.
ABSTRACT The present report focuses on the design of the experimental analysis that are going to ... more ABSTRACT The present report focuses on the design of the experimental analysis that are going to be performed within the ROBUSTIMPACT project (Grant Agreement Number: RFSR-CT-2012-00029). The project focuses on the behavior of composite steel and concrete framed buildings against accidental actions. Within the project, several experimental analyses are going to be performed spanning from the local to the global behavior.
ABSTRACT The present report focuses on the design of the experimental analysis that are going to ... more ABSTRACT The present report focuses on the design of the experimental analysis that are going to be performed within the ROBUSTIMPACT project (Grant Agreement Number: RFSR-CT-2012-00029). The project focuses on the behavior of composite steel and concrete framed buildings against accidental actions. Within the project, several experimental analyses are going to be performed spanning from the local to the global behavior.
In recent years, the use of steel light housing structural solutions made of cold‐formed thin‐wal... more In recent years, the use of steel light housing structural solutions made of cold‐formed thin‐walled profiles (CFS) is becoming increasingly popular. Lightness, high structural efficiency, durability, rapidity and simplicity of erection of the building and its finishes are some of the main advantages of these systems, which make them attractive and competitive with respect to more traditional constructional solutions. In these buildings, which do have a skeleton made of cold‐formed steel profiles completed by sheathings made of various materials, the key role of transmission of both vertical and horizontal loads from the floors to the foundation, is played by the shear walls. Recently, the University of Trento carried out a project aimed to develop an industrialized housing system made of CFS members. In this framework, experimental and numerical studies of the in‐plane lateral response of shear walls were performed. In particular, this paper summarizes first the experimental program and then it focuses on the main features of numerical models and on their validation in both monotonic and cyclic regime. The critical parameters governing the response of these complex systems are finally identified and discussed.
In dem europäischen Forschungsprojekt SlimAPP „Slim‐Floor Beams – Preparation of application rule... more In dem europäischen Forschungsprojekt SlimAPP „Slim‐Floor Beams – Preparation of application rules in view of improved safety, functionality and LCA” wurde ein umfassendes Versuchsprogramm zu Slim‐Floor‐Trägern durchgeführt, um ein tieferes Verständnis in das besondere Tragverhalten von Slim‐Floor‐Systemen zu bekommen. Das Versuchsprogramm umfasste Push‐out‐Versuche, Schubträgerversuche mit 4 m Länge, Biegeträgerversuche mit 6 m Länge und Biegeträgerversuche zur Bestimmung des Einflusses von Langzeiteffekten wie Kriechen und Schwinden. Durch die Wahl eines Basisquerschnitts und die Ausführung der verschiedenen Versuchsserien mit den gleichen Parametern und die Verwendung möglichst vergleichbarer Materialeigenschaften wurde eine Übertragbarkeit der Ergebnisse zwischen den Versuchskonfigurationen gewährleistet. Es werden die verschiedenen Versuchsserien, ihre Parameter und Ergebnisse im Einzelnen vorgestellt. Die Ergebnisse erlauben auch Schlussfolgerungen zum Tragverhalten von besonderen Verbunddübeln (CoSFB) und geben Erkenntnisse zum Trag‐ und Verformungsverhalten von Slim‐Floor‐Trägern gerade im Zusammenhang mit der Verdübelung. Ein solches Verständnis zum Tragverhalten von Slim‐Floor‐Trägern ist für eine gezielte effiziente und ökonomische Bemessung wichtig.
This paper deals with a contemporary integrated and sustainable construction technology for new r... more This paper deals with a contemporary integrated and sustainable construction technology for new residential buildings. Specifically, this research aims at developing innovative steel-timber hybrid structures which allow a rapid assembly of the individual prefabricated components, minimizing the construction times and limiting the costs of the work. The numerical analyses performed on a multi-storey building for social housing will be presented and discussed. The in-plane behaviour of the floors and shear walls will be analysed, considering in particular the types and arrangement of the different timber- and steel-timber joints. The connections to be used among the construction elements will be selected in order to develop a sufficient stiffness, ductility and bearing capacity according to the design criteria for seismic-resistant structures. These connections allow to enhance the on-site assembly operations, therefore working effectively also under harsh climatic conditions.
ABSTRACT The last years were characterized by a growing interest about the development of strateg... more ABSTRACT The last years were characterized by a growing interest about the development of strategies for the mitigation of the damages caused by accidental events. Accidental actions can be resisted by residual strength and alternate load path methods and combination of these strategies can lead to an effective and cost efficient design procedure for progressive collapse mitigation by redistributing the loads within the structure. One of the main objective of these strategies is the development of structural systems able to activate mechanisms to transfer the loads from the damaged to the undamaged part of the structure. This paper illustrates the preliminary work carried on within a European Research Project, aimed at developing new design concepts for steel-concrete composite frames against accidental actions. The first part of the study investigates the behavior of two geometrically different steel-concrete 3-D composite frames subjected to the loss of an internal column. Two full-scale experimental tests will be performed on a part of these structure. By simulating the total loss of the impacted column, the experiments enable investigation of the redundancy of the 3-D slab system in terms of activation of membrane effects. The present paper presents the preliminary study for the design of the tests.
ABSTRACT The present report focuses on the design of the experimental analysis that are going to ... more ABSTRACT The present report focuses on the design of the experimental analysis that are going to be performed within the ROBUSTIMPACT project (Grant Agreement Number: RFSR-CT-2012-00029). The project focuses on the behavior of composite steel and concrete framed buildings against accidental actions. Within the project, several experimental analyses are going to be performed spanning from the local to the global behavior.
ABSTRACT The present report focuses on the design of the experimental analysis that are going to ... more ABSTRACT The present report focuses on the design of the experimental analysis that are going to be performed within the ROBUSTIMPACT project (Grant Agreement Number: RFSR-CT-2012-00029). The project focuses on the behavior of composite steel and concrete framed buildings against accidental actions. Within the project, several experimental analyses are going to be performed spanning from the local to the global behavior.
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