000019543 001__ 19543
000019543 005__ 20170118182323.0
000019543 04107 $$aeng
000019543 046__ $$k2017-01-09
000019543 100__ $$aLarkin, Tam
000019543 24500 $$aNumerical Analyses of Interaction Between Adjacent Structures on Liquefied Soil

000019543 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019543 260__ $$b
000019543 506__ $$arestricted
000019543 520__ $$2eng$$aIn all major earthquakes, structures in the proximity of rivers and coastal plains, are often affected by substantial excess pore-water pressure which may lead to soil liquefaction. The excess pore-water pressure will lead to soil softening and change in structural response. However, in the few cases where soil-structure interaction is considered during the analysis process almost always a linear model of the soil and structure is employed. While this model is simple and therefore convenient, the analyses are a poor representation of real soil behaviour. Additionally, in major urban areas most structures are closely adjacent. Therefore, the situation is more complex than free-field condition or just a stand-alone structure. The analysis of a single structure cannot capture the major characteristics of the seismic response of closely adjacent structures. In this work an elasto-plastic multi-mechanism model was used to represent soil behaviour. A coupled solid-liquid phase formulation was utilised. A single degree-of-freedom structure was employed using frame elements. At this stage, a linear structure and nonlinear soil are considered. The coupled soil-structure model is used to simulate the behaviour of single and adjacent structures on sand under conditions of substantial excess pore-water pressure. The analyses show lower settlement under free-field conditions than that evident in the presence of a structure. Also, lower settlement (but higher than the freefield case) was observed for closely adjacent structures compared with the case of an isolated structure. A higher increment in pore-water pressure (but a lower pore-water pressure build-up ratio) beneath structures was also observed. Differences in the response spectrum were evident between an isolated structure and a structure closely adjacent to a rigid block.

000019543 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019543 653__ $$aStructure-soil-structure interaction; liquefaction; adjacent structures; numerical modelling

000019543 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019543 720__ $$aLarkin, Tam$$iChouw, Nawawi$$iBarrios, Gonzalo
000019543 8560_ $$ffischerc@itam.cas.cz
000019543 8564_ $$s423502$$uhttps://invenio.itam.cas.cz/record/19543/files/3862.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3862.
000019543 962__ $$r16048
000019543 980__ $$aPAPER