000018973 001__ 18973
000018973 005__ 20170118182251.0
000018973 04107 $$aeng
000018973 046__ $$k2017-01-09
000018973 100__ $$aZhou, Yan
000018973 24500 $$aReview of Laboratory Test Data for Combined Lateral and Gravity Shear Demands on Interior Slab-Column Connections

000018973 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018973 260__ $$b
000018973 506__ $$arestricted
000018973 520__ $$2eng$$aFlat slabs are a common floor system for commercial and residential buildings. Past earthquake damage has shown that slabcolumn (SC) frames are not a suitable main lateral-force-resisting system in regions of high seismic risk because of their relative flexibility and potential for brittle punching shear failures. However, SC frame systems are common lateral systems in regions of low-to-moderate seismic risk, as well as gravity systems in regions of high seismic risk where moment frames or shear walls are provided as the main lateral-force-resisting system. In such cases, SC connections must still maintain sufficient strength and ductility to resist gravity loads under the presence of inelastic deformations. In the last several decades, the two-way shear response of SC connections has been evaluated by a significant number of experiments. These experiments provide physical tests to examine and calibrate design methods. However, details for these tests can be difficult to obtain and differences in defining key response parameters can lead to inconsistencies in some of the summarized test results. In addition, design recommendations have in some cases been developed based upon a limited subset of the available laboratory test data that did not include more recent tests. To avoid these limitations, this paper documents a database of SC connection tests that uses consistent criteria for selecting key response parameters. The collected test results include interior reinforced concrete SC connections with and without shear reinforcement under combined lateral and gravity shear demands. The relationship between the limiting drift and gravity shear ratio is examined for the data. The laboratory test data are investigated with respect to the load simulation technique, failure mode, shear reinforcement, and slab span-to-thickness ratio. The laboratory test data relating limiting drift to gravity shear demand data is compared to the current ACI 318-14 relationship for evaluating the design lateral deformation demands for SC connections in Seismic Design Categories D, E, and F. Because of the importance of the gravity shear demand on the SC connection, influence of flexural reinforcement ratio, and slab thickness; this paper also summarizes provisions for determining the nominal two-way shear strength provided by the concrete in three building codes: ACI 318-14, JSCE 15, and Eurocode 2 (2004). The differences in the estimated two-way shear strength provided by ACI 318-14 versus the Japanese and European codes are reviewed for select specimens, and the impact of these differences on the computed gravity shear ratio is evaluated.

000018973 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018973 653__ $$areinforced concrete; slab-column connections; shear reinforcement; design codes; experimental database

000018973 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018973 720__ $$aZhou, Yan$$iHueste, Mary Beth D
000018973 8560_ $$ffischerc@itam.cas.cz
000018973 8564_ $$s793911$$uhttps://invenio.itam.cas.cz/record/18973/files/2606.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2606.
000018973 962__ $$r16048
000018973 980__ $$aPAPER