000018617 001__ 18617
000018617 005__ 20170118182231.0
000018617 04107 $$aeng
000018617 046__ $$k2017-01-09
000018617 100__ $$aBasdogan, Cagri
000018617 24500 $$aReliability of Reinforced Concrete Wall Shear Strength Equations in Modern Seismic Codes

000018617 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018617 260__ $$b
000018617 506__ $$arestricted
000018617 520__ $$2eng$$aReinforced concrete (RC) shear walls have been widely used in buildings located in seismic regions due to their high ductility and rigidity against earthquake and wind loads. Majority of the reinforced shear wall buildings which were not constructed based on modern seismic codes (e.g. ASCE 7, ACI 318, Turkish Seismic Code 2007, EuroCode 8, and Japanese Standard for Seismic Evaluation of Existing Reinforced Concrete Buildings 2001) have poor material quality, inadequate reinforcement and detailing. Post-earthquake observations have shown that such buildings are more likely to experience a greater degree of damage or even collapse because of considerable influences of insufficient reinforcement detailing and inadequate material quality. Rehabilitation and retrofit of existing buildings has been vital and commonly used to minimize the risk of possible damage/collapse. For better rehabilitation, it is necessary to understand the behavior of RC shear walls to minimize the risk of potential damages that may occur in the future earthquakes. Shear strength is one of the most prominent properties to represent behavior of reinforced concrete structural walls. This paper aims to assess modern seismic code provisions and to investigate reliability and accuracy of code-estimated shear strength using a detailed wall test database consisting of a large number of shear wall tests (a total of 172) conducted around the world. Specimens in the database were classified based on their failure modes and statistical studies were carried out. Mean values of the ratio of experimental strength to the estimated strength according to ACI 318 were 1.11, 0.79, and 0.66 for shear-controlled, transition, and flexure-controlled walls, respectively. Results of the analyses to determine reliability of estimated shear strength showed that equations provided by ACI 318, Turkish Seismic Code, and Japanese Seismic Code 2001 underestimate the shear strength of shear-controlled walls by 11%, 7%, and 3%, respectively. It is also indicated that equation provided by Turkish Seismic Code 2007 is not appropriate for non-rectangular shear walls.

000018617 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018617 653__ $$aRC shear walls, Shear strength, Seismic rehabilitation

000018617 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018617 720__ $$aBasdogan, Cagri$$iDeger, Zeynep
000018617 8560_ $$ffischerc@itam.cas.cz
000018617 8564_ $$s732047$$uhttps://invenio.itam.cas.cz/record/18617/files/1853.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1853.
000018617 962__ $$r16048
000018617 980__ $$aPAPER