<p>A unified and consistent design procedure is proposed for column base
anchorages loaded in shear and tension. A literature review of previous work was
done to identify discrepancies. A design procedure for anchorages loaded in
shear, tension and combined shear and tension was developed which attempted to
coordinate c;lnd resolve the discrepancies in previous work. A design methodology
utilizing shear lugs was developed. The overall design procedure is for column
bases loaded in shear and tension and uses two design methods:</p>
<p>Method 1: Headed anchor bolts are used to resist both shear and tension
loads.</p>
<p>
Method 2: A shear lug welded to the bottom of the base plate resists shear
loads and the headed anchor bolts resist only tension loads.</p>
<p>The proposed design method differs form the design method used by Shipp and
Haninger (Reference 23) as follows:</p>
<p>
1. The proposed procedure incorporates both shear and tension design stress
based on the ultimate strength of the anchor bolts times a reduction factor.</p>
<p>
2. Separate capacity reduction factors are introduced for shear and tension.</p>
<p>
3. The use of shear lugs is incorporated in the proposed design.</p>
<p>
4. The incorrect use of the "shear-friction" concept is noted and not used in
the design.</p>
<p>
5. The safety factor for the required embedment depth is applied to the
projected area of the failure cone not the embedment depth of the bolt.</p>
<p>
Several design examples are presented using the two methods. A computer
program (using Microsoft QuickBasic 4.0) has also been developed using the
proposed design procedure.</p> / Master of Engineering
| Identifer | oai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/40699 |
| Date | 20 January 2010 |
| Creators | Applegate, Steven M. |
| Contributors | Civil Engineering, Barker, Richard M., Beliveau, Yvan J., Garst, Donald A. |
| Publisher | Virginia Tech |
| Source Sets | Virginia Tech Theses and Dissertation |
| Detected Language | English |
| Type | Master's project |
| Format | BTD, application/pdf |
| Relation | LD5655.V851_1991.A665.pdf |
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