Effect of lamina thickness on flexural performance and creep behavior of douglas fir glued laminated timber beam

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Pulngern, Tawich; Chanto, Kasan; Pansuwan, Waraluk; Pattaraumpornsak, Woraparn;

ปีที่เผยแพร่ (ค.ศ.): 2020

ชื่อย่อของวารสาร: WR

Volume number: 65

Issue number: 5

หน้าแรก: 715

หน้าสุดท้าย: 726

จำนวนหน้า: 12

นอก: 13364561

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096979414&doi=10.37763%2fWR.1336-4561%2f65.5.715726&partnerID=40&md5=0e8b3ed8db60dcfa659587c3946ca51d

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

This research presents the effects of lamina thickness on flexural and creep performances of glulam timber. Flexural test results indicated that nonlinear load-displacement curve could be defined as both exponential and power functions. Lamina thickness was not affected to nonlinear curve, especially at initial linear relationship. Slightly different of 2.92% for nonlinear function parameters was obtained. For flexural creep test due to three levels of sustained load for 1,000 hours, only secondary creep stage behaviors without delamination were observed for all glulam timbers while average relative creep was 1.66. Effect of lamina thickness was also not found for creep performance. Finally, creep models have been developed including Bailey-Norton, adjusted Pickel, simplified Pickel, and Dorn models and found that Bailey-Norton and the adjusted Pickel models gave a good correlation with experiment and were the suitable models which could be used to predict long-term flexural creep behavior for various stress levels. © 2020 Statny Drevarsky Vyskumny Ustav. All rights reserved.

คำสำคัญ

flexural behavior, Glued laminated timber, Lamina thickness