FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2950210897> ?p ?o ?g. }

• W2950210897 abstract "Reinforced concrete (RC) coupled shear walls (CSWs) with adequate strength and stiffness can be an effective system to resist lateral forces such as wind and earthquakes. CSWs are generally used for medium-high rise buildings. They resist lateral forces not only through the shear and moment resistance of their wall segments, but also through the shear action of their coupling beams (CBs). In CSWs, the shear forces are transferred through the CBs, and the overturning moment is partially resisted by an axial compression-tension that is coupled across the walls. A properly designed CSW should ensure that: (i) plastic hinging occurs in the CBs before it does in the walls; (ii) the CBs do not show major strength or stiffness degradations with load reversal; and (iii) the CBs should function as the primary energy-dissipation elements by providing stable energy-absorbing hysteresis loops without pinching. However, designing and detailing CBs with all these important features were not possible before the 1970s. Therefore, the old existing CSWs are potentially at risk of suffering severe damage under moderate to severe earthquakes. Many conventional techniques have been used with some success to retrofit and strengthen deficient structures and thereby improve their seismic performance. In the last few years, the use of externally bonded (EB) fiber reinforced polymer (FRP) composites has proven to be an innovative, reliable and a cost effective retrofit method for RC structures. This study presents results of an experimental and analytical investigation on the seismic behavior, evaluation, and retrofit of reinforced concrete CSWs designed according to codes and Standards before the 1970s.In the experimental part of this study, a new retrofit method using carbon FRP (CFRP) sheets was proposed to enhance the seismic performance of deficient reinforced concrete CBs. To that end, two coupled shear wall specimens with conventionally reinforced CB, representative of CSWs designed according to Canadian codes prior to the 1970s were considered as follows: One as a control specimen and the other strengthened using EBCFRP. Both specimens were tested under reversed cyclic loading to assess the efficiency of the proposed retrofit method.In addition, one more specimen was designed according to modern Canadian design code and Standard with a diagonally reinforced CB. This specimen was submitted to cyclic loading up to failure simulating a seismic loading. Thereafter, the damaged specimen was repaired using EB-CFRP sheets and retested under reversed cyclic loading to investigate the effectiveness of the proposed repair technique.Experimental results revealed the ability of the CFRP retrofitting system to increase load carrying, ductility and energy dissipation capacity in deficient CB specimen designed according to old codes. In addition, the proposed repair method is also capable of recovering the initial strength, stiffness, ductility and energy dissipation capacity in severely damaged CB specimen with diagonal reinforcement.The numerical part of this research study dealt with nonlinear time history analysis of a prototype 20-story coupled shear wall structure located in Canada. Four CSW prototype structures including two identical CSWs designed according to old National Building Code of Canada (NBCC) before 1970s, and two CSWs designed according to new design code (NBCC 2015) and Standard (CSA A23.3-14) located in Montreal and Vancouver as representative of East and West of Canada, respectively. Nonlinear dynamic analyses using RUAUMOKO were conducted under scaled earthquake accelerations to investigate the CSW structural behavior, adequacy of the design, and the deficiencies of old designed CSWs. An EB-CFRP retrofit method was proposed for deficient CSW structures to be in conformity with the new seismic design code. The beneficial effects of this retrofit method on seismic behavior of such CSWs was investigated through nonlinear time history analyses.The results of this analytical study revealed that the CFRP retrofitting technique performed very well since it resulted in improved sequence of yielding in CBs and walls, and reduced story displacement, inter-story drift, CBs rotation, and ductility demand. It was also found that unlike old NBCC, the requirements prescribed by CSA A23.3-14 and NBCC 2015 for the capacity design of ductile coupled walls are acceptable in approximating seismic demands." @default.
• W2950210897 created "2019-06-27" @default.
• W2950210897 creator A5000973220 @default.
• W2950210897 date "2018-11-21" @default.
• W2950210897 modified "2023-09-24" @default.
• W2950210897 title "Nonlinear behaviour of coupled shear walls strengthened with externally bonded carbon fibre reinforced polymer composite under seismic loadings" @default.
• W2950210897 cites W115892216 @default.
• W2950210897 cites W1566853816 @default.
• W2950210897 cites W160933594 @default.
• W2950210897 cites W1622919855 @default.
• W2950210897 cites W176137725 @default.
• W2950210897 cites W1964232666 @default.
• W2950210897 cites W1968023430 @default.
• W2950210897 cites W1971535529 @default.
• W2950210897 cites W1971762157 @default.
• W2950210897 cites W1977577475 @default.
• W2950210897 cites W1979576543 @default.
• W2950210897 cites W1981818744 @default.
• W2950210897 cites W1983505491 @default.
• W2950210897 cites W1989274752 @default.
• W2950210897 cites W1994085791 @default.
• W2950210897 cites W2008132490 @default.
• W2950210897 cites W2011377209 @default.
• W2950210897 cites W2012776912 @default.
• W2950210897 cites W2013985195 @default.
• W2950210897 cites W2018299531 @default.
• W2950210897 cites W2023140725 @default.
• W2950210897 cites W2028344996 @default.
• W2950210897 cites W2042266107 @default.
• W2950210897 cites W2045203261 @default.
• W2950210897 cites W2046031660 @default.
• W2950210897 cites W2052718808 @default.
• W2950210897 cites W2057788605 @default.
• W2950210897 cites W2061476419 @default.
• W2950210897 cites W2063853613 @default.
• W2950210897 cites W2064008995 @default.
• W2950210897 cites W2071561116 @default.
• W2950210897 cites W2072293868 @default.
• W2950210897 cites W2076024521 @default.
• W2950210897 cites W2078983721 @default.
• W2950210897 cites W2085452323 @default.
• W2950210897 cites W2086652237 @default.
• W2950210897 cites W2091822706 @default.
• W2950210897 cites W2097464310 @default.
• W2950210897 cites W2101786573 @default.
• W2950210897 cites W2111230242 @default.
• W2950210897 cites W2120829136 @default.
• W2950210897 cites W2128585700 @default.
• W2950210897 cites W2131968736 @default.
• W2950210897 cites W2131989116 @default.
• W2950210897 cites W2135389809 @default.
• W2950210897 cites W2138179653 @default.
• W2950210897 cites W2139742146 @default.
• W2950210897 cites W2148546995 @default.
• W2950210897 cites W2152047613 @default.
• W2950210897 cites W2170588205 @default.
• W2950210897 cites W2185779093 @default.
• W2950210897 cites W2259261880 @default.
• W2950210897 cites W2261682782 @default.
• W2950210897 cites W2262224271 @default.
• W2950210897 cites W2305845071 @default.
• W2950210897 cites W2403679014 @default.
• W2950210897 cites W2528416564 @default.
• W2950210897 cites W2749199506 @default.
• W2950210897 cites W2765840848 @default.
• W2950210897 cites W2984285664 @default.
• W2950210897 cites W3146031433 @default.
• W2950210897 cites W3183195894 @default.
• W2950210897 cites W572116040 @default.
• W2950210897 cites W600940470 @default.
• W2950210897 cites W2289183263 @default.
• W2950210897 cites W3144622198 @default.
• W2950210897 hasPublicationYear "2018" @default.
• W2950210897 type Work @default.
• W2950210897 sameAs 2950210897 @default.
• W2950210897 citedByCount "1" @default.
• W2950210897 countsByYear W29502108972021 @default.
• W2950210897 crossrefType "journal-article" @default.
• W2950210897 hasAuthorship W2950210897A5000973220 @default.
• W2950210897 hasConcept C104779481 @default.
• W2950210897 hasConcept C121332964 @default.
• W2950210897 hasConcept C127413603 @default.
• W2950210897 hasConcept C135402231 @default.
• W2950210897 hasConcept C159985019 @default.
• W2950210897 hasConcept C170901245 @default.
• W2950210897 hasConcept C192562407 @default.
• W2950210897 hasConcept C22140971 @default.
• W2950210897 hasConcept C2779227376 @default.
• W2950210897 hasConcept C2779372316 @default.
• W2950210897 hasConcept C2988805333 @default.
• W2950210897 hasConcept C53524968 @default.
• W2950210897 hasConcept C66938386 @default.
• W2950210897 hasConcept C76344452 @default.
• W2950210897 hasConcept C96035792 @default.
• W2950210897 hasConcept C97355855 @default.
• W2950210897 hasConceptScore W2950210897C104779481 @default.
• W2950210897 hasConceptScore W2950210897C121332964 @default.
• W2950210897 hasConceptScore W2950210897C127413603 @default.
• W2950210897 hasConceptScore W2950210897C135402231 @default.
• W2950210897 hasConceptScore W2950210897C159985019 @default.

• next