000019893 001__ 19893
000019893 005__ 20170118182342.0
000019893 04107 $$aeng
000019893 046__ $$k2017-01-09
000019893 100__ $$aRendón, Kelly Pari
000019893 24500 $$aGuidelines for Field Assessment of Liquefaction Hazard in Urban Areas Through Geophysical Methods

000019893 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019893 260__ $$b
000019893 506__ $$arestricted
000019893 520__ $$2eng$$aLiquefaction phenomena as an earthquake-induced effect in loose saturated soils is considered very dangerous for structures founded over such materials. Peru’s capital and its surrounding districts are located over alluvial deposits with a shallow water table, so it can be inferred that liquefaction potential is high. In addition, Peru’s capital is currently in a process of fast urban expansion which makes lots of people to settle in zones that are prone to liquefaction posing a risk to housing and infrastructure projects. The common practice for liquefaction potential assessment recommends field testing such as SPTbased and CPT-based methods although a more cost-effective method is the use of geophysical methods which are not destructive and faster. The latter suits the need of a developing country which lacks of enough funding for soil exploration using SPT or CPT. In recent years there have developed several methodologies to include geophysical parameters in liquefaction potential assessment. However, the reliability of such methodologies in places far from where they were developed must be tested in order to properly apply them. Therefore, this paper reviews geophysical-based correlations for liquefaction assessment aiming to perform a comparative analysis among them and SPT-based methods. Furthermore, the paper aims to establish guidelines for liquefaction hazard assessment in three levels of analysis starting from the qualitative one which shows the importance of geomorphological and geologic conditions, then it is important to evaluate past behavior of soils during earthquakes to finally estimate the factor of safety. Findings indicate that geophysical-based methods for assessing liquefaction potential have similar results to those obtained following SPT-based methods except in the range of soils with moderately stiffness (i.e. shear wave velocity is between 185 m/sec to 250 m/sec) whose liquefaction potential is difficult to predict.

000019893 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019893 653__ $$aLiquefaction Potential Assessment, Geophysical Methods, MASW, Moderately Stiff soils

000019893 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019893 720__ $$aRendón, Kelly Pari$$iCabrera, Brahian Román
000019893 8560_ $$ffischerc@itam.cas.cz
000019893 8564_ $$s275673$$uhttps://invenio.itam.cas.cz/record/19893/files/462.pdf$$yOriginal version of the author's contribution as presented on USB, paper 462.
000019893 962__ $$r16048
000019893 980__ $$aPAPER