Open Access

ARTICLE

Experimental Investigation of the Creep Behaviour of Glulam Compression-Bending Members

by Yifei Yin, Lirong Qu, Weidong Lu^*, Chengshuai Li

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

* Corresponding Author: Weidong Lu. Email:

(This article belongs to the Special Issue: Research and Innovations in Engineered Timber and Mass Timber Products for Sustainable Built-Environment)

Journal of Renewable Materials 2022, 10(6), 1517-1535. https://doi.org/10.32604/jrm.2022.018149

Received 02 July 2021; Accepted 15 October 2021; Issue published 20 January 2022

Abstract

Creep test results of glulam members under compression and bending were studied in this paper. The creep tests were conducted to investigate the influence of the stress level and relative eccentricity on the creep deformation of glulam members. The test results showed that the creep deformation trends of glulam members under long-term compression and bending loading were similar; the creep deformation increased with increases in both the stress level and relative eccentricity. However, the relative creep deformation decreased with the increase in both the stress level and relative eccentricity under long-term loading, and a five-parameter creep model was proposed to analyse the creep mechanism of glulam members under compression and bending. The good fitness of the test results indicated that the five-parameter model was able to accurately simulate the creep deformation of glulam compression-bending members. Moreover, a numerical model was developed using the creep equation, which was related to the parameter and . The simulation results were in good agreement with the test results, and the parameters and were correlated to the relative eccentricity and stress level, respectively. Based on the corrected parameters and , the relative creep deformation of glulam compression-bending members was predicted over 50 years.

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