Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Testing of long-term behaviour of pre-stressed timber-to-timber composite (TTC) floors
https://orcid.org/0000-0001-6279-4860
https://orcid.org/0000-0003-2082-3613
Highlights 4 Timber-to-timber composite floor specimens were tested over a period of 1.5 years. Each specimen was pre-cambered and pre-stressed using only inclined screws. 2 Type of screws were adopted: double threaded (DT) and single threaded (ST). The Toratti rheological model was used for the theoretical comparisons. Specimens assembled with DT screws exhibited the best long-term performance.
Abstract The paper presents the outcomes of an experimental investigation on the long-term behaviour of timber-to-timber composite (TTC) floors assembled using a cambering-prestressing (CP) procedure previously proposed by the authors. The short-term effectiveness of such technique has been demonstrated in previous literature where it is shown that by exploiting the capability of the screw connectors to apply a compression force on the joining timber members, it is possible to obtain a camber and a prestressed condition without any use of other external devices or propping. To prove the applicability of the aforementioned CP procedure to real life design-scenarios, the long-term efficacy should be investigated. With such aim, four TTC floor specimens of 5.0 m of span and different connection layouts, were loaded in flexure under controlled environmental conditions for a period up to almost 1.5 years. One of the main results from the long-term monitoring of the specimens is that the floors uplift achieved by applying the CP procedure was found to be persistent over time with minimal camber losses.
Testing of long-term behaviour of pre-stressed timber-to-timber composite (TTC) floors
https://orcid.org/0000-0001-6279-4860
https://orcid.org/0000-0003-2082-3613
Highlights 4 Timber-to-timber composite floor specimens were tested over a period of 1.5 years. Each specimen was pre-cambered and pre-stressed using only inclined screws. 2 Type of screws were adopted: double threaded (DT) and single threaded (ST). The Toratti rheological model was used for the theoretical comparisons. Specimens assembled with DT screws exhibited the best long-term performance.
Abstract The paper presents the outcomes of an experimental investigation on the long-term behaviour of timber-to-timber composite (TTC) floors assembled using a cambering-prestressing (CP) procedure previously proposed by the authors. The short-term effectiveness of such technique has been demonstrated in previous literature where it is shown that by exploiting the capability of the screw connectors to apply a compression force on the joining timber members, it is possible to obtain a camber and a prestressed condition without any use of other external devices or propping. To prove the applicability of the aforementioned CP procedure to real life design-scenarios, the long-term efficacy should be investigated. With such aim, four TTC floor specimens of 5.0 m of span and different connection layouts, were loaded in flexure under controlled environmental conditions for a period up to almost 1.5 years. One of the main results from the long-term monitoring of the specimens is that the floors uplift achieved by applying the CP procedure was found to be persistent over time with minimal camber losses.
Testing of long-term behaviour of pre-stressed timber-to-timber composite (TTC) floors
https://orcid.org/0000-0001-6279-4860
https://orcid.org/0000-0003-2082-3613
Highlights 4 Timber-to-timber composite floor specimens were tested over a period of 1.5 years. Each specimen was pre-cambered and pre-stressed using only inclined screws. 2 Type of screws were adopted: double threaded (DT) and single threaded (ST). The Toratti rheological model was used for the theoretical comparisons. Specimens assembled with DT screws exhibited the best long-term performance.
Abstract The paper presents the outcomes of an experimental investigation on the long-term behaviour of timber-to-timber composite (TTC) floors assembled using a cambering-prestressing (CP) procedure previously proposed by the authors. The short-term effectiveness of such technique has been demonstrated in previous literature where it is shown that by exploiting the capability of the screw connectors to apply a compression force on the joining timber members, it is possible to obtain a camber and a prestressed condition without any use of other external devices or propping. To prove the applicability of the aforementioned CP procedure to real life design-scenarios, the long-term efficacy should be investigated. With such aim, four TTC floor specimens of 5.0 m of span and different connection layouts, were loaded in flexure under controlled environmental conditions for a period up to almost 1.5 years. One of the main results from the long-term monitoring of the specimens is that the floors uplift achieved by applying the CP procedure was found to be persistent over time with minimal camber losses.
Testing of long-term behaviour of pre-stressed timber-to-timber composite (TTC) floors
Riccadonna, Daniele (Autor:in) / Walsh, Kevin (Autor:in) / Schiro, Gianni (Autor:in) / Piazza, Maurizio (Autor:in) / Giongo, Ivan (Autor:in)
11.11.2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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