dc.contributor.author	Ryan, John C.	en
dc.contributor.committeechair	Murray, Thomas M.	en
dc.contributor.committeecochair	Plaut, Raymond H.	en
dc.contributor.committeemember	Charney, Finley A.	en
dc.contributor.committeemember	Mays, Timothy W.	en
dc.contributor.committeemember	Cousins, Thomas E.	en
dc.contributor.committeemember	Singh, Mahendra P.	en
dc.contributor.department	Civil Engineering	en
dc.date.accessioned	2014-03-14T20:17:45Z	en
dc.date.adate	2006-12-04	en
dc.date.available	2014-03-14T20:17:45Z	en
dc.date.issued	2006-09-22	en
dc.date.rdate	2006-12-04	en
dc.date.sdate	2006-10-28	en
dc.description.abstract	The presented research investigated the viability of a double-braided synthetic fiber rope for providing improved performance of steel moment frames subjected to earthquake-induced ground motions. A series of experimental tests, including a 1:3-scale dynamic test and 1:6-scale shaking table tests, was conducted using Northridge ground-motion input. A series of nonlinear dynamic analytical studies, using DRAIN-2DX, was conducted to develop the experimental tests. Throughout experimental testing, the ropes exhibited a hyper-elastic loading response and a reduced-stiffness unloading response. A conditioning cycle was defined as a loading cycle induced in the rope above the highest load expected to be experienced by the rope, and was determined to be requisite for ropes intended to be used for the stated objectives of the research program. After experiencing a conditioning cycle, the rope response returned to initial conditions without permanent deformation, demonstrating repeatability of response through several loading cycles below the conditioning load. In the 1:6-scale shaking-table experiments, the ropes drastically improved the performance of the steel moment frames. Maximum and residual drift were reduced significantly, with a corresponding minimal increase to the maximum base shear. Base shear was reduced at several peaks subsequent to the initial pulse of the Northridge ground-motion input. The analytical model developed was excellent for predicting elastic response of the 1:6-scale shaking table experiments and adequate for the purpose of planning shaking table studies. Correlation of peak rope forces between the analytical model and experimental results was poor, and was attributed to limitations of the pre-defined elements used to represent the rope devices in the software program. The inability of the elements to capture the complex unloading response of the rope was specifically noted.	en
dc.description.degree	Ph. D.	en
dc.identifier.other	etd-10282006-094904	en
dc.identifier.sourceurl	http://scholar.lib.vt.edu/theses/available/etd-10282006-094904/	en
dc.identifier.uri	http://hdl.handle.net/10919/29392	en
dc.publisher	Virginia Tech	en
dc.relation.haspart	09AppendicesRefferencesVita.pdf	en
dc.relation.haspart	06Chapter4.pdf	en
dc.relation.haspart	04Chapter2.pdf	en
dc.relation.haspart	05Chapter3.pdf	en
dc.relation.haspart	03Chapter1.pdf	en
dc.relation.haspart	01TitlePage.pdf	en
dc.relation.haspart	08Chapter6.pdf	en
dc.relation.haspart	02TableofContents.pdf	en
dc.relation.haspart	07Chapter5.pdf	en
dc.rights	In Copyright	en
dc.rights.uri	http://rightsstatements.org/vocab/InC/1.0/	en
dc.subject	passive control devices	en
dc.subject	steel moment frames	en
dc.subject	residual drift	en
dc.subject	shaking table	en
dc.subject	scale modeling	en
dc.subject	earthquake	en
dc.subject	synthetic fiber ropes	en
dc.subject	seismic performance	en
dc.title	Analytical and Experimental Investigation of Improving Seismic Performance of Steel Moment Frames Using Synthetic Fiber Ropes	en
dc.type	Dissertation	en
thesis.degree.discipline	Civil Engineering	en
thesis.degree.grantor	Virginia Polytechnic Institute and State University	en
thesis.degree.level	doctoral	en
thesis.degree.name	Ph. D.	en

Analytical and Experimental Investigation of Improving Seismic Performance of Steel Moment Frames Using Synthetic Fiber Ropes

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