000018889 001__ 18889
000018889 005__ 20170118182246.0
000018889 04107 $$aeng
000018889 046__ $$k2017-01-09
000018889 100__ $$aMarshall, John
000018889 24500 $$aSeismic Performance of Beam-Column Sub-Assemblies of a Demountable Precast Concrete Frame Building

000018889 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018889 260__ $$b
000018889 506__ $$arestricted
000018889 520__ $$2eng$$aStructural elements in conventional frame buildings are connected using “wet joints” (i.e. cast in-situ joints) to emulate the behaviour of a monolithic reinforced concrete (RC) frame building in transfer of loads to the foundation. Because of cast insitu joints, the inherent advantage of precast building over RC building in-terms of speed of construction is limited due to the requirement of formwork and curing time to erect other precast elements. Also, because of wet joints the structural system of a conventional precast concrete building is either fully or partially monolithic in form, which requires these buildings to be demolished instead of dismantling and reuse of undamaged components. Buildings damaged to a reparable state after an earthquake require considerable downtime to repair in addition to the cost to restore its functionality. This will induce substantial seismic losses contributed by direct repair cost, and more significantly by the downtime (i.e. occupancy interruption). Also, there is limited research work carried out in the development of fully “dry and rigid (i.e. momentresisting)” beam column connections for a precast concrete frame building. For these reasons, the authors are working on a frame building system using standard precast concrete elements and dry connections, which is quick to construct and easy to demount. The proposed building system can also be considered as a low downtime building system because of quick repair/replacement of damaged components (mostly lateral load resisting elements); thereby minimizing the seismic losses due to occupancy interruption. In this paper, details of different steel angle connection configurations between precast concrete beams and columns which make the overall building structural system demountable are reported. The philosophy in load transfer mechanism between the beam and the column is also explained. The effect of the variable parameters of the connection like beam edge distance, fill material between the connection and the precast concrete elements, condition of ducts on the beam side (i.e. grouted or un-grouted), and bolt configuration on the column side on seismic performance of beam-column sub-assemblies is investigated. The sequence of observed modes of failure in the beam with increasing lateral drift is reported. Based on the investigated parameters, the best demountable steel angle connection configuration that emulates the structural performance of the monolithic RC frame is identified and recommended for implementation.

000018889 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018889 653__ $$aDemountable; design to dismantle; deconstruction; precast concrete; dry beam column connection

000018889 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018889 720__ $$aMarshall, John$$iBothara, Jitendra$$iAninthaneni, Pavan Kumar$$iDhakal, Rajesh Prasad
000018889 8560_ $$ffischerc@itam.cas.cz
000018889 8564_ $$s1173985$$uhttps://invenio.itam.cas.cz/record/18889/files/242.pdf$$yOriginal version of the author's contribution as presented on USB, paper 242.
000018889 962__ $$r16048
000018889 980__ $$aPAPER