Lately there have been talks on a PCA publication related to achor bolt design.
Try also to check on thread592-4469 in The Concrete Engineering forum (or simply do use the search utility in Eng-Tips as follows: Search - keyword "anchor bolts"-all forums and go)where a similar question was posed and several references were given by pals here who are almost experts on the subject.
Personally, I use the AISC LRFD bolt design under combined loading to design anchor bolts. As far as the anchorage strength of the concrete, I apply the 1997 UBC provisions as well as the provisions in the latest PCI design handbook.