原文传递
Determining the Dynamic Increase Factor for Glued-Laminated Timber Beams
| 题名： | Determining the Dynamic Increase Factor for Glued-Laminated Timber Beams |
| 其他题名： | ANSI(American National Standards Institute).2017.Standard for wood products—Structural glued laminated timber.ANSI A190.1.Tacoma,WA:ANSI. |
| 正文语种： | 英文 |
| 作者： | Daniel N. Lacroix |
| 关键词： | Glulam;Beams;Flexural response;High strain-rates;Dynamic loading;Dynamic increase factor (DIF);Shock tube;Single-degree-of-freedom (SDOF) response |
| 摘要： | This paper presents the results from an experimental program that investigated the flexural behavior of glulam beams subjected to dynamic loading. A total of thirty-eight beams consisting of three different cross-sections were tested destructively under both static and dynamic loads. The analysis resulted in a dynamic increase factor (DIF) of 1.14 for strain-rates ranging between 0.14 and 0.51 s~(-1), however, the increase was only observed when the outer tension laminate did not include continuous finger-joints (single laminate width) or closely aligned finger-joints (multiple laminates width) in the high moment region causing a straight fracture across the width. No increase due to high strain-rate effects was found when a continuous failure across the width due to finger-joints (FJs) were present in the outer tension laminate, and thus if continuous laminates, uninterrupted by FJs cannot be guaranteed, a dynamic increase factor of unity is suggested for design. Since the beams exhibited little to no ductility, it is recommended that a linear-elastic resistance curve be used to generate the dynamic resistance curve. An equivalent single-degree-of-freedom (SDOF) model accounting for high strain-rate effects using the derived DIF, where appropriate, captured the displacement at failure, time to failure, and displaced shape with reasonable accuracy. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N09033 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002146 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 09 |
| 页码： | 437-448 |
相关文献
- Fire Safety of Glued-Laminated Timber Beams in Bending
- Cyclic Behavior of Bolted Glued-Laminated Timber Brace Connections with Slotted-In Steel Plates
- Shake-Table Experimental Testing and Performance of Topped and Untopped Cross-Laminated Timber Diaphragms
- Energy-Absorbing Connection for Heavy-Timber Assemblies Subjected to Blast Loads-Concept Development and Application
- Steel-Reinforced Columns Made of European Beech Glued-Laminated Timber
- Vibration Performance and Stiffness Properties of Mass Timber Panel–Concrete Composite Floors with Notched Connections
检索历史
应用推荐
