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Budownictwo i Inżynieria Środowiska

Budownictwo i Inżynieria Środowiska
2018.026, DOI: 10.7862/rb.2018.26

FIRE RESISTANCE OF TIMBER JOINTS WITH STEEL FASTENERS

Tomasz DOMAŃSKI, Kamil KMIECIK
Submitted by: Artur Szalacha

DOI: 10.7862/rb.2018.26

Abstract

Fire safety is a major concern in the design of timber construction. Wood is combustible material. The thermal response of timber connections is usually the main factor in evaluating the overall load-bearing capacity of wood structures exposed to fire. The analysis of timber joints under fire conditions is difficult and complex. Finite element model is developed to predict the thermal behavior of bolted wood-to-wood joints exposed to fire. In fire, the material characteristic depend on the temperature. The thermal model is continuous, taking into account the thermal continuity between the joint components. Also, the thermal model is used to predict the evolution of the temperature field inside the connection. The paper presents a summary of results from a numerical studies of the fire behavior of wood-to-wood timber connections with steel bolt. As a result of computer simulations the temperature distribution was obtained. During fire exposure, the timber section is reduced and steel bolt reduces strength. Load-carrying capacity per shear plane in fire conditions was calculated using two methods: design methods according to EN 1995-1-1 [5] and reduced load method according to EN 1995-1-2 [6]. In the first approach, the timber section loss and steel strength reduction during the fire were taken into account.

Full text (pdf)

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About this Article

TITLE:
FIRE RESISTANCE OF TIMBER JOINTS WITH STEEL FASTENERS

AUTHORS:
Tomasz DOMAŃSKI (1)
Kamil KMIECIK (2)

AUTHORS AFFILIATIONS:
(1) Cracow University of Technology
(2) Cracow University of Technology

SUBMITTED BY:
Artur Szalacha

JOURNAL:
Budownictwo i Inżynieria Środowiska
2018.026

KEY WORDS AND PHRASES:
thermal conductivity, fire safety, connections, elevated temperatures

FULL TEXT:
http://doi.prz.edu.pl/pl/pdf/biis/1044

DOI:
10.7862/rb.2018.26

URL:
http://dx.doi.org/10.7862/rb.2018.26

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