ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Application of Miner criterion, cumulate damage variable was estimated based onpseudo-static experiment study for reinforced concrete energy dissipation braced frame (EDBF)under low cyclic loads, accordingly, the constitutive relations about damage was established; thelinear hook law turned into non-linear stress-strain relations; the dissipated-energy factor c β wasdetermined based on following factors: the cumulate damage variable, hysteretic energy determinedby load-displacement curve, maximum deformation and yield force of EDBF; it supplied aquantitative basis of dissipated-energy for EDBF; There were two reasons in energy dissipation forEDBF: one was energy dissipation equipment acting, the other was concrete damaged and cracked orlow cycle fatigue failure in this structure, and the latter part of energy was associated with amounts ofcracks and crack size; then the forced mechanism of EDBF was analyzed, and the reason causedcracks and crack type of EDBF columns, beam and braces were explained based on forcedmechanism: the columns, beam and braces of EDBF were compressed or tensed under low cyclicloads, so most of cracks of columns, beam and braces belonged to mode I cracks[removed info]This study supplieda method for estimating energy of EDBF under earthquake ground motion, and the results showed:columns in EDBF are easily damaged under earthquake ground motion, so the structural elementsmust be designed strong column, weak beam and weak brace
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.611.pdf
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