000009951 001__ 9951
000009951 005__ 20141205153210.0
000009951 04107 $$aeng
000009951 046__ $$k2008-10-12
000009951 100__ $$aEshghi, Sassan
000009951 24500 $$aCyclic Behavior of Slender R/C Columns with Insufficient Lap Splice Length

000009951 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009951 260__ $$b
000009951 506__ $$arestricted
000009951 520__ $$2eng$$aPerformance of slender reinforced concrete columns with insufficient splice length and widely spaced transverse bars has been discussed in this paper. Reinforced concrete columns which constructed according to ACI (pre-1971) provisions often have common deficiencies associated with inadequate detailing of the reinforcing steel. One such deficiency is the detailing of lap splices at the base of columns, which are often short and poorly confined as a result of widely spaced ties with 90-degree hooks, and located immediately above the floor or foundation where large inelastic demands can be expected. Poor splice behavior has been observed in recent earthquakes, may have significant role in partial or total collapse of buildings. Although there are many modern codes that offer detailing for high prone seismic regions, due to poor implementation such defective detailing is constructed in some developing countries such as Iran. Four half-scale columns representing exterior columns were constructed and tested under reversed cyclic lateral deformation with either constant axial load. Three specimens conformed to ACI (pre-1971) and a specimen was built according to ACI (318-02). Specimens consisted of cantilever columns with strong stubs. Parameters which covered in this study include axial load, widely spaced transverse bars, and lap splice length. In conclusion, seismic behavior of the columns in term of the hysteretic response was presented and compared with various evaluation methods. Moreover, results of experimental tests were compared with a numerical study. In general, the common mode of failure for the specimens was a brittle failure owing to bond deterioration of the lap-spliced longitudinal reinforcements.

000009951 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009951 653__ $$aReinforced Concrete Columns, Lap Splice Deficiencies, Experimental, Numerical

000009951 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009951 720__ $$aEshghi, Sassan$$iZanjani-Zadeh, vahid
000009951 8560_ $$ffischerc@itam.cas.cz
000009951 8564_ $$s293002$$uhttps://invenio.itam.cas.cz/record/9951/files/12-03-0004.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 12-03-0004.
000009951 962__ $$r9324
000009951 980__ $$aPAPER