000018680 001__ 18680
000018680 005__ 20170118182236.0
000018680 04107 $$aeng
000018680 046__ $$k2017-01-09
000018680 100__ $$aSmith, Rob
000018680 24500 $$aInvestigation on the Effect of Mortar Quality on the Out-Of-Plane Seismic Performance of Unreinforced Masonry Walls

000018680 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018680 260__ $$b
000018680 506__ $$arestricted
000018680 520__ $$2eng$$aUnreinforced masonry (URM) walls are used in a broad range of building-stock worldwide. These walls are susceptible to a loss of functionality, structural damage, or complete collapse during earthquakes. Damage to URM walls due to the out-ofplane loading is usually characterized by weak modes of failure, due to cracking of the mortar joints and crushing failure of the masonry. In addition, historic buildings may present poor mortar quality, degraded and crumbled mortars, and variation of mortar quality through the wall thickness due to the weathering (and later outside repointing), workmanship and aesthetic preferences; this can make the walls more prone to complete collapse during a seismic event. This study aims to highlight the significance of mortar quality on the seismic performance of URM buildings and the potential need for retrofitting options for buildings with degraded mortar. A validated masonry material model is used to model a 1.4m wide by 2.8m high wall using the LS-DYNA finite element software. Several material parameters (e.g. compressive strength of masonry, tensile strength of bed joints) are varied through the thickness of walls to model the effect non-homogeneous mortar degradation on the out-of-plane performance of walls. These variations are repeated for two types of masonry: calcium silicate and clay walls. Furthermore, a full 3D model of a typical two-story URM building with the timber framing system is analyzed under earthquake conditions to determine the influence of these variations of mortar quality on its seismic performance.

000018680 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018680 653__ $$aMasonry Buildings; Finite Element Analysis; Mortar Quality

000018680 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018680 720__ $$aSmith, Rob$$iMarasca, Alessandro$$iShah, Sundip$$iSoroushian, Siavash$$iMasroor, Armin
000018680 8560_ $$ffischerc@itam.cas.cz
000018680 8564_ $$s467637$$uhttps://invenio.itam.cas.cz/record/18680/files/1983.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1983.
000018680 962__ $$r16048
000018680 980__ $$aPAPER