Effects of Long-Term Creep on the Integrity of Modern Wood Structures

dc.contributor.authorTissaoui, Jacemen
dc.contributor.committeecochairLoferski, Joseph R.en
dc.contributor.committeecochairHolzer, Siegfried M.en
dc.contributor.committeememberThangjitham, Suroten
dc.contributor.committeememberDillard, David A.en
dc.contributor.committeememberGarst, Donald A.en
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T20:21:15Zen
dc.date.adate1996-12-10en
dc.date.available2014-03-14T20:21:15Zen
dc.date.issued1996-12-10en
dc.date.rdate1996-12-10en
dc.date.sdate1998-07-17en
dc.description.abstractShort-term creep tests in tension and in compression were conducted on southern pine, Douglas-fir, yellow-poplar, and Parallam™ samples at temperatures ranging between 20 and 80° C and at 6, 9 and 12% moisture content. The principle of time-temperature superposition was applied to form a master curve that extended for a maximum of 2 years. The horizontal shift factors followed an Arrhenius relation with activation energies ranging between 75 and 130 kJ/mole. It was not possible to superpose the compliance curves at 70 and 80° C, this is attributed to the presence of multiple components in wood with different temperature dependence. Long-term creep tests were also conducted in tension and in compression at 20° C and 12% moisture content for over 2 years. The resulting compliance curves were fitted to the power law equation using a nonlinear fitting procedure. The results were compared with those of the short-term creep tests. Finite element analysis was conducted on selected wood structures to determine the effect of creep on serviceability and stability.en
dc.description.degreePh. D.en
dc.identifier.otheretd-12803097520en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12803097520/en
dc.identifier.urihttp://hdl.handle.net/10919/30288en
dc.publisherVirginia Techen
dc.relation.haspartetd.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectFinite element methoden
dc.subjectstructuresen
dc.subjectWooden
dc.subjectcreepen
dc.subjectTTSPen
dc.titleEffects of Long-Term Creep on the Integrity of Modern Wood Structuresen
dc.typeDissertationen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en
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