000019438 001__ 19438
000019438 005__ 20170118182318.0
000019438 04107 $$aeng
000019438 046__ $$k2017-01-09
000019438 100__ $$aMurcia-Delso, Juan
000019438 24500 $$aSeismic Design and Performance of Reinforced Concrete Bridge Column - Enlarged Pile Shaft Connections

000019438 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019438 260__ $$b
000019438 506__ $$arestricted
000019438 520__ $$2eng$$aThis paper presents results of an experimental and analytical investigation conducted at the University of California, San Diego to improve the seismic design of column-enlarged pile shaft connections. Four full-scale column-shaft assemblies were tested under quasi-static cyclic lateral loading to study the minimum embedment length required for column reinforcement extended into an enlarged pile shaft and the necessary transverse reinforcement in the bar anchorage zone of a shaft to develop the necessary anchorage capacity and minimize splitting cracks. The test specimens had different column longitudinal bar sizes, different embedment lengths of the column reinforcement inside the shafts, and different amount of transverse reinforcement in the shafts. Experimental results have been complemented by nonlinear finite element analysis performed with an analytical bond-slip model developed and implemented in Abaqus to obtain a good understanding of the cyclic bond deterioration in the longitudinal reinforcement and to determine the minimum embedment length required. Based on the experimental and analytical results, new design recommendations have been developed. These recommendations can result in a significant reduction of the embedment length as compared to current seismic design specifications of the California Department of Transportation and AASHTO.

000019438 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019438 653__ $$abridge column, pile shaft, development length, large-scale testing, nonlinear finite element analysis

000019438 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019438 720__ $$aMurcia-Delso, Juan$$iLiu, Yujia$$iShing, P. Benson
000019438 8560_ $$ffischerc@itam.cas.cz
000019438 8564_ $$s514397$$uhttps://invenio.itam.cas.cz/record/19438/files/3624.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3624.
000019438 962__ $$r16048
000019438 980__ $$aPAPER