Open Access

ARTICLE

Study on the Fire Behavior of Sandwich Wall Panels with GFRP Skins and a Wood-Web Core

Guangjun Sun, Chuting Wang, Lu Wang^*

College of Civil Engineering, Nanjing Tech University, Nanjing, 211816, China

* Corresponding Author: Lu Wang. Email:

(This article belongs to the Special Issue: Advanced Wood Composites from Renewable Materials)

Journal of Renewable Materials 2022, 10(6), 1537-1553. https://doi.org/10.32604/jrm.2022.018598

Received 05 August 2021; Accepted 09 October 2021; Issue published 20 January 2022

Abstract

To investigate the temperature field and residual bearing capacity of the sandwich wall panels with GFRP skins and a wood-web core under a fire, three sandwich walls were tested. One of them was used for static load test and the other two for the one-side fire tests. Besides, temperature probe points were set on the sandwich walls to obtain the temperature distribution. Meanwhile, the model of the sandwich wall was established in the finite element software by the method of core material stiffness equivalent. The temperature distribution and performance reduction of materials were also considered. The residual bearing capacity of specimens after fire exposure were simulated considering the effects of web spacing, wall panel thickness and fire exposure time. Because the sandwich wall panels were stressed by eccentric compression after a fire, the residual compressive strength of the wall panel after the fire can be calculated through the eccentric loading analysis. Compared with the numerical results, it can be concluded that the effectiveness of calculation method of residual bearing capacity after fire exposure was proved.

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Keywords

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