𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effect of bar shape on the pull-out capacity of fully-grouted rockbolts

✍ Scribed by A Kılıc; E Yasar; C.D Atis

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
798 KB
Volume
18
Category
Article
ISSN
0886-7798

No coin nor oath required. For personal study only.

✦ Synopsis

This paper presents experimental results obtained from the direct pull-out test using different types of rockbolts having different shape of lugs. These are smooth surface bars, ribbed bars, single conical lugged bars, double conical lugged bars and triple conical lugged bars. It is found that the failure mechanism of the conical lugged rock bolt is different from that of conventional rockbolts, in which the adhesion or the shear strength at the bolt-grout interface provides the load bearing capacity. From the results of experimental study, the use of the conical lugged rock bolts is suggested, because it provides a greater anchorage strength due to wedging effect that is a combination of the shear and compressive strength of the grouting material.

📜 SIMILAR VOLUMES

Effect of grout properties on the pull-o
Effect of grout properties on the pull-out load capacity of fully grouted rock bolt
✍ A Kılıc; E Yasar; A.G Celik 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 263 KB

This paper represents the result of a project conducted with developing a safe, practical and economical support system for engineering workings. In rock engineering, untensioned, fully cement-grouted rock bolts have been used for many years. However, there is only limited information about the acti

A new analytical solution to the mechani
A new analytical solution to the mechanical behaviour of fully grouted rockbolts subjected to pull-out tests
✍ Laura Blanco Martín; Michel Tijani; Faouzi Hadj-Hassen 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 613 KB

A new analytical approach able to predict the mechanical behaviour of fully grouted rockbolts subjected to pull-out tests is proposed in this paper. Input parameters of such approach are: bolt radius, bolt's Young modulus, displacement of the free end of the bolt and the constitutive law of the rock

Effect of loading on the optimized shape
Effect of loading on the optimized shape of a kinked bar
✍ C. Mattheck; L. Harzheim 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 820 KB

## Abstract A kinked bar with two rectangular knees is shape optimized with respect to different single and one combined loading case. A guideline to shape optimization is given for combined loading. It was found that if the kinked bar is shape optimized with respect to the most unfavorable case of