NDLI: Pull-out strength of axially loaded steel rods bonded in glulam parallel to the grain

Content Provider	Springer Nature Link
Author	Steiger, R. Gehri, E. Widmann, R.
Copyright Year	2006
Abstract	Bonded-in steel rods are very efficient in withstanding high forces applied to timber members. Investigations of bonded-in rods started in the late eighties of the last century and several design models were published since. By comparing these approaches on base of an extensive literature review a certain degree of discrepancy and partly even contradiction can be found. The paper describes a test program which aimed to study the influence of timber density and of geometric parameters on the pull-out strength of single axially loaded steel rods. Following the GSA$^{®}$-procedure, which is a well established glued-in rods joint in Switzerland, rods with metric thread were bonded in glulam made of Norway spruce lamellas using an epoxy-type adhesive. The tests showed that the influence of the timber density can be quantified by a power function of ρ with an exponent of 0.6. The parameters length of the glued zone ℓ and diameter of the hole d $_{H}$ can be summarized in the slenderness ratio λ = ℓ/d $_{H}$, which itself is related to the mean shear strength in the anchoring zone by an exponent of approximately −1/3. In order to prevent the specimens from premature splitting, distances between the axis of the rod and the edge of the specimen of 2.3 times the diameter of the rod have been used.
Starting Page	69
Ending Page	78
Page Count	10
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	40
Issue Number	1
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2006-10-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Glued-in steel rod Glulam Pull-out strength Parallel to the grain Parameter study Epoxy Building Materials Civil Engineering Operating Procedures, Materials Treatment Mechanical Engineering Theoretical and Applied Mechanics Structural Mechanics
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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