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Fire Safety of Glued-Laminated Timber Beams in Bending
| 题名： | Fire Safety of Glued-Laminated Timber Beams in Bending |
| 正文语种： | 英文 |
| 作者： | Michael Klippel;Andrea Frangi |
| 作者单位： | ETH Zurich, Institute of Structural Engineering |
| 关键词： | Fire resistance; Timber construction; Adhesive; Experimentation; Numerical analysis; Residual strength; Fire safety; Wood structures. |
| 摘要： | Design models for timber structures with fire-resistance requirements usually take into account the loss in cross section due to charring and the temperature-dependenf reduction in strength and stiffness of the residual cross section. Standards for glued timber elements like glued-laminated timber beams have assumed that structural adhesives do not influence the fire resistance, but further specifications of adequate adhesive requirements are missing. In vestigations were therefore conducted to determi nc the in fluence of different adhesives on the load-carrying behavior of glued-kiminated timber beams in fire. Large-scale fire-resistance tests in combination with extensive finite-element analyses showed that a modification of the zero-strength layer thickness of d0= 7 mm currently used in a standard design code should be discussed for glued-laminated timber loaded in bending in a future release of this design code. An increase of the zero-strength layer considering the finger-joint strength depending on the approved structural adhesive is not needed. DOI: 10.1061/(ASCE)ST.1943 -541X.0001781. © 2017 American Society of Civil Engineers. |
| 出版日期： | 2017.07 |
| 出版年： | 2017 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.143 |
| 期： | NO.07 |
| 页码： | 04017052 |
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