Issue 47

A. Namdar et alii, Frattura ed Integrità Strutturale, 47 (2019) 451-458; DOI: 10.3221/IGF-ESIS.47.35 451 Timber beam seismic design – A numerical simulation Abdoullah Namdar, *Yun Dong, Yuyi Liu Faculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, China ab_namdar@yahoo.com , hadyun@163.com ( * ), liuyuyi88@163.com A BSTRACT . In order to design a seismic timber beam, the effect of near-fault ground motion on timber beam has numerically been investigated, with reference to small displacement theory. The simulated near-fault ground motion is applied on the fixed base of a timber frame model. The beam is placed in single span of a timber frame. The beam has two different length sizes of 1.8 and 3.3 meters. The seismic load-displacement, seismic load-strain and strain-displacement have been calculated for all models and shown in graphs. The beam is designed with nonlinear analysis method and some mechanical properties for all models have been used, in numerical analysis. The numerical analysis results indicate that, the inertial interaction, energy dissipation and nonlinear deformation of beams in timber frames have directly related with frame span. In beams with a smaller length, higher seismic loading caused lower displacement. The displacement is reduced by reducing the length of the beam. The inertial interaction, energy dissipation and nonlinear deformation are changed respect to the length of the beam. The innovation of this paper is to develop cycling graphs by using ABAQUS, to improve design of timber frame and give an adequate explanation of seismic behavior of timber beam. K EYWORDS . Seismic load; Timber beam; Displacement; Nonlinear deformation; Cycling graphs. Citation: Namdar, A., Dong, Y., Liu, Y., Timber beam seismic design – A numerical simulation, Frattura ed Integrità Strutturale, 47 (2018) 451-458. Received: 20.10.2018 Accepted: 14.12.2018 Published: 01.01.2019 Copyright: © 2019 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. I NTRODUCTION owadays, the timber well adapted in the construction industry, including timber frame which is very popular. The strength of timber depends on the material and manufacturing process. However, the timber seismic behavior is different from concrete and steel. There are several historical timber structures around the world available that need maintenance and retrofits. The Wentong pagoda timber tower with nine floors is one heritage and beautiful monument constructed in Huai’an city, Jiangsu province of China (Fig. 1). There are several towers made from timber frames existing in China, some of them are, Changzhou Tianning, Changzhou Wenbi Pagoda, Jimingsu-sunset, Lufeng Temple, Twin pagodas of Shuixi and etc. N