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

作　　者：Yifei Yin Lirong Qu Weidong Lu Chengshuai Li 

机构地区：[1]College of Civil Engineering,Nanjing Tech University,Nanjing,211816,China

出　　处：《Journal of Renewable Materials》2022年第6期1517-1535,共19页可再生材料杂志（英文）

基　　金：The research described here was supported by the National Key Research and Development Program of China(Grant No.2017YFC0703506).

摘　　要：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 a and b.The simulation results were in good agreement with the test results,and the parameters a and b were correlated to the relative eccentricity and stress level,respectively.Based on the corrected parameters a and b,the relative creep deformation of glulam compression-bending members was predicted over 50 years.

关 键 词：Glulam compression-bending members CREEP stress level relative eccentricity 

分 类 号：TU366[建筑科学—结构工程]