Since 2010, twelve post-tensioned timber (Pres-Lam) buildings have been constructed throughout the world. The technology relies on unbonded post-tensioning tendons to provide moment capacity to beam-column, wall-foundation, or column-foundation connections. Supplemental energy dissipation can be introduced by mild steel bars or replaceable damping devices when designing buildings for high seismic risk areas. Creep within the timber elements leads to losses in post-tensioning force over time. The amount of post-tensioning loss depends on the members' geometry, environmental service conditions, and the initial moisture content of wood. This paper presents a design approach for estimating, via hand calculations, the amount of post-tensioning loss expected for the most common design configurations.

Design approach to predict post-tensioning losses in post-tensioned timber frames / Granello, Gabriele; Leyder, Claude; Palermo, Alessandro; Frangi, Andrea; Pampanin, Stefano. - In: JOURNAL OF STRUCTURAL ENGINEERING. - ISSN 0733-9445. - 144:8(2018), p. 04018115. [10.1061/(ASCE)ST.1943-541X.0002101]

Design approach to predict post-tensioning losses in post-tensioned timber frames

Pampanin, Stefano
2018

Abstract

Since 2010, twelve post-tensioned timber (Pres-Lam) buildings have been constructed throughout the world. The technology relies on unbonded post-tensioning tendons to provide moment capacity to beam-column, wall-foundation, or column-foundation connections. Supplemental energy dissipation can be introduced by mild steel bars or replaceable damping devices when designing buildings for high seismic risk areas. Creep within the timber elements leads to losses in post-tensioning force over time. The amount of post-tensioning loss depends on the members' geometry, environmental service conditions, and the initial moisture content of wood. This paper presents a design approach for estimating, via hand calculations, the amount of post-tensioning loss expected for the most common design configurations.
2018
Creep; Long-term; Post-tensioned timber; Post-tensioning loss; Pres-Lam; Civil and Structural Engineering; Building and Construction; Materials Science (all); Mechanics of Materials; Mechanical Engineering
01 Pubblicazione su rivista::01a Articolo in rivista
Design approach to predict post-tensioning losses in post-tensioned timber frames / Granello, Gabriele; Leyder, Claude; Palermo, Alessandro; Frangi, Andrea; Pampanin, Stefano. - In: JOURNAL OF STRUCTURAL ENGINEERING. - ISSN 0733-9445. - 144:8(2018), p. 04018115. [10.1061/(ASCE)ST.1943-541X.0002101]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1181925
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