000018501 001__ 18501
000018501 005__ 20170118182225.0
000018501 04107 $$aeng
000018501 046__ $$k2017-01-09
000018501 100__ $$aLu, Yiqiu
000018501 24500 $$aMinimum Vertical Reinforcement in Ductile Reinforced Concrete Walls

000018501 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018501 260__ $$b
000018501 506__ $$arestricted
000018501 520__ $$2eng$$aResearch into the seismic design of lightly reinforced concrete (RC) walls was initiated following the Canterbury earthquakes in New Zealand when several walls were observed to have formed only a limited number of cracks in the plastic hinge region. Initial investigation highlighted that vertical reinforcement content and distribution were critical parameters that influenced the ductility of lightly reinforced concrete walls. A total of ten half scale walls were tested to investigate the seismic behaviour of multi-story RC walls with minimum vertical reinforcement. Six walls were designed with minimum required distributed vertical reinforcement in accordance with existing New Zealand Concrete Structures Standard (NZS 3101:2006). An additional four test walls were designed with additional vertical reinforcement in the ends of the walls, as is required by some design standards and proposed amendments for ductile RC walls in NZS 3101:2006 (A3 draft). The experimental results of three of these test walls are presented and discussed. The test results indicated that typical minimum distributed vertical reinforcement requirements, such as those in NZS 3101:2006 (A2), were insufficient to ensure that a large number of secondary cracks formed, and are only suitable for walls designed for low ductility demands. Additionally, the concentration of inelastic reinforcement strains at wide cracks resulted in premature reinforcement buckling even when closely spaced transverse reinforcement was used. The RC walls tested with a small amount of additional vertical reinforcement in the ends of the wall displayed significantly greater crack distribution in the plastic hinge region and more evenly distributed reinforcement strains. The test results and analysis have been used to provide recommendations for suitable minimum vertical reinforcement provisions for walls with a range of ductility demands.

000018501 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018501 653__ $$aseismic design, reinforced concrete walls; vertical reinforcement, minimum requirement, plastic hinge region.

000018501 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018501 720__ $$aLu, Yiqiu$$iHenry, Richard
000018501 8560_ $$ffischerc@itam.cas.cz
000018501 8564_ $$s737701$$uhttps://invenio.itam.cas.cz/record/18501/files/1587.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1587.
000018501 962__ $$r16048
000018501 980__ $$aPAPER