Title page for ETD etd-02032003-104656

Type of Document

Master's Thesis

Author

Bradley, T. Patrick

Author's Email Address

tbradley@vt.edu

URN

etd-02032003-104656

Title

Stability of Castellated Beams During Erection

Degree

Master of Science

Department

Civil Engineering

Advisory Committee

Advisor Name	Title
Murray, Thomas M.	Committee Chair
Easterling, William Samuel	Committee Member
Plaut, Raymond H.	Committee Member

Keywords

Lateral-Torsional Buckling
Erection
Castellated Beams
Steel Beams

Date of Defense

2003-01-31

Availability

unrestricted

Abstract

The increased depth of castellated beams presents stability problems, specifically during erection. During erection the castellated beam must support the weight of an erector and self-weight until the continuous bracing of the floor deck is in place. The stability of the unbraced member is based on its resistance to lateral-torsional buckling.
The cross-sectional properties that are related to lateral-torsional buckling, such as out-of-plane bending, warping constant, and torsional constant were calculated using three different approaches to model the unique geometry of castellated beams. These properties were used in various lateral-torsional buckling solutions to determine which procedure should be used to check for this mode of failure.
Two specimens were tested to evaluate the results of the analytical unbraced length determination process. The tests results were used to better model the contribution of the web-to-column flange double angle connection on the stability of the castellated beam.

Files

Filename		Size	Approximate Download Time (Hours:Minutes:Seconds)
Filename		Size	28.8 Modem	56K Modem	ISDN (64 Kb)	ISDN (128 Kb)	Higher-speed Access
	BackMatter.pdf	1.07 Mb	00:04:56	00:02:32	00:02:13	00:01:06	00:00:05
	ChapterI.pdf	224.99 Kb	00:01:02	00:00:32	00:00:28	00:00:14	00:00:01
	ChapterII.pdf	308.63 Kb	00:01:25	00:00:44	00:00:38	00:00:19	00:00:01
	ChapterIII.pdf	417.68 Kb	00:01:56	00:00:59	00:00:52	00:00:26	00:00:02
	ChapterIV.pdf	221.55 Kb	00:01:01	00:00:31	00:00:27	00:00:13	00:00:01
	ChapterV.pdf	96.97 Kb	00:00:26	00:00:13	00:00:12	00:00:06	< 00:00:01
	Cover.pdf	66.02 Kb	00:00:18	00:00:09	00:00:08	00:00:04	< 00:00:01
	FrontMatter.pdf	147.74 Kb	00:00:41	00:00:21	00:00:18	00:00:09	< 00:00:01