Scpt101 c p t b a s i c i n t e r p r e t a t i o n p l o t s n o r m a l i z e d cliq v. Dec 29, 2017 soilstructure software has liquefactionspt software. From cliq software you can evaluate liquefaction potential of sites by using spt, cpt and shear wave velocity. Cliq is more advanced than the cpt section of the current liqit software and provides users an easy to use graphical environment specifically tailored for cpt and cptu data. Evaluation and mitigation of liquefaction hazard for engineering practice wednesday april 9th, 2014 maverik center, west valley, utah. Cone penetration test cptu processing software novo. Liquefaction software free download liquefaction top 4. Professor kevin franke and his team are developing a simplified model to assess. Liquefaction prediction and assessment is a vital part of the earthquakeresistant design of structures on liquefiable soils.
In the first attempt at using nn and cpt data for liquefaction assessment, researchers achieved the same accuracy as the conventional method. Assessment of cptbased methods for liquefaction evaluation. Decision tree approach for soil liquefaction assessment. Cptbased analysis of liquefaction and reliquefaction. Liquiter by geostru is a software designed for soil liquefaction analysis, supporting a wide variety of field tests spt, vs, cpt, cpte, cptu. Evaluation of liquefaction and re liquefaction observed in christchurch using cpt data 2 damage.
Chapter 5 liquefaction potential evaluation and analysis this chapter provides information to use when evaluating and analyzing the potential for failure due to liquefaction during a seismic event at an ohio waste containment facility. Soil liquefaction analysis software novoliq novo tech software. Abstractthis paper presents a new simplified liquefaction prediction and assessment method that is capable of considering the influence of the waveforms and durations of earthquakes. Novocpt is designed for processing cpt files and calculating soil parameters such as friction angle, relative density, unit weight, fines content, shear wave velocity, gmax, clay sensitivity, ocr, undrained. Bradley in practice, several competing liquefaction evaluation procedures leps are used to compute factors of safety against soil liquefaction, often for use within a liquefaction. Cone penetration testing cpt has become the most common method for liquefaction assessment in christchurch, and issues have been identified with the soil behaviour type, liquefaction potential and vertical settlement estimates, particularly in the northwestern suburbs of christchurch where soils consist mostly of silts, clayey silts and. Assessment of the liquefaction susceptibility of finegrained soils, journal of geotechnical and geoenvironmental engineering, asce 2 9, 11651177.
Whether you are a current liqit registered user or a new user searching for a. Novocpt cone penetration test cptu processing software novocpt novocpt is a powerful, userfriendly geotechnical software for processing and interpretation of cone penetration test data. Ohio epa requires that the soil units at any waste containment facility be able to withstand the effects of a. For the assessment of the liquefaction potential index the analyses were out carried using the cliq liquefaction assessment software ver. Soil liquefaction assessment software from cptcptu data. Liquefaction assessment for an urban roading project in. Liquefaction analysis soilstructure software youtube. Novoliq is a powerful, userfriendly geotechnical software for soil liquefaction analysis. Soils report, cpt data files and architectural plans. Assessment of cptbased methods for liquefaction evaluation in a liquefaction potential index framework b. Please plan on bringing a laptop computer so you can follow along with the realworld examples using the popular geologismiki software programs, cpetit cpt interpreation and cliq liquefaction analysis. However, statistical methods such as lr and dt have been only used for liquefaction.
This webinar will continue from parts 1 and 2 of using the cpt to evaluate soils for liquefaction and focus on realworld examples using the software program cliq. Cptbased liquefaction triggering procedure journal of. Which is the best software to assess liquefaction potential of soil. In the present study, the patient ruledinduction method prim, for the first time in the engineering literature, has been successfully employed to investigate the potential of liquefaction occurrence due to earthquake strikes in soils. Tip resistance is a measurement of soil hardness, sleeve friction is an indication of the soil cohesive strength commonly seen with clays and pore pressure is related to the pressure generated as the cone is advanced as well as an indication to the amount of clay in the formation. Our new soil liquefaction software addresses advanced issues such as cyclic softening in claylike soils and thin layerlayer transition zone detection. The results of shear wave velocity are shown in fig. From the table, it is clear that soft computing techniques have been widely used for liquefaction modeling. The performance of this network is measured and the results are compared with a real case history. A cptbased effectivestress analysis procedure for liquefaction assessment has been presented. A practical liquefaction assessment tool is developed using ann model.
Whether you are a current liqit registered user or a new user searching for a cpt liquefaction assessment software, we strongly believe that you should try cliq. Cliq is more advanced than the cpt section of the current liqit software and provides users an easy to use graphical environment specifically. Liqit utilizes the most recent and wellknown used deterministic and probabilistc methods that exist today. Probability of liquefaction hazard map for yangon city.
If you require a liquefaction assessment report or you would like further information, please contact us. The distributions of the data are examined with respect to various parameters e. For this type of analysis, there is no need to normalize and calibrate parameters since nn can consider all effective parameters together and find the relations between them. It covers liquefaction assessment using various empirical methods, and estimation of post liquefaction lateral spread and reconsolidation settlement of the site. C p t b a s i c i n t e r p r e t a t i o n p l o t s n. In the process of analysing the data, the cpt strength profiles that were obtained before and after major aftershock events at sites of re liquefaction were compared. Cliq is an application provides users an easy to use graphical environment specifically tailored for cone penetration test data cpt and cptu. Significant developments have taken place over the past 20 years to evaluate the liquefaction potential of soils. The nceer liquefaction workshop document presented the standard penetration test spt, and the newer cone penetration test cpt methods to undertake liquefaction analyses, and discussed available. The fucino lacustrine basin in central italy is a large flat area mostly devoted to agriculture, with urbanization along the perimeter of the ancient. Comparison of sptcpt liquefaction evaluations and cpt interpretations. Novocpt is the most popular cpt processing software in the market. Cpt investigation engineering design consultants ltd. Test cpt soundings can be very effective in site characterization, especially sites with discrete.
Quantitative assessment of liquefaction potential in selected. Cliq is more advanced than the cpt section of the current liqit software and provides users an. Key elements in the proposed procedure can be summarized as follows. Interpretive software for cpt, cptu, scptu tests cone penetration test data interpretation, seismic cone data analysis. Origin of cptbased methods all methods have similar origins. From interpretation of dissipation tests, seismic data, to liquefaction.
Liquefaction, cpt, sandy soil, artificial neural networks introduction soil liquefaction is a complex phenomenon mostly for saturated sandy soils. Evaluation of liquefaction and reliquefaction observed in. The software addresses advanced issues such as cyclic softening in claylike soils and thin layerlayer transition zone detection. It covers liquefaction assessment using various empirical methods, and estimation of postliquefaction lateral. The method uses cpt tip resistance qc and sleeve friction fs, corrected for effective overburden stress. Which is the best software to assess liquefaction potential. Cpt prediction of soil behaviour type, liquefaction potential. Cone penetration test cptu processing software novo tech. The code was developed to allow bulk processing of cpt data sets. Procedures and methods for a liquefaction assessment using. Cpt liquefaction software cliq is more advanced than the cpt section of the current liqit software and provides users an easy to use graphical environment specifically tailored for cone penetration. For cases that qc1ncs are less than 33, it was set to 33. Liquefaction probability hazard map is one of the most important tasks in earthquake geotechnical engineering. It will be a valuable addition to your software library.
Section 4 provides an evaluation of the sptbased liquefaction triggering database relative to the liquefaction triggering correlation by idriss and boulanger 2004, 2008. A cptbased effective stress analysis procedure for. Matlab was the main platform used to code the computational components of this research. Cpt liquefaction software cliq is more advanced than the cpt section of the current liqit software and provides users an easy to use graphical environment specifically tailored for cone penetration test data cpt and cptu. This paper describes the land damage assessment process for christchurch, including the collection and processing of extensive data and observations related to liquefaction, the characterization of. Cptbased probabilistic and deterministic assessment of in. Earthquake geotechnical engineering for protection and.
C p t b a s i c i n t e r p r e t a t i o n p l o t s n o r. Jul 15, 20 this webinar will continue from parts 1 and 2 of using the cpt to evaluate soils for liquefaction and focus on realworld examples using the software program cliq. Liquefaction analysis software geoliqu geoadvanced. Whether you are a current liqit registered user or a new user searching for a cpt liquefaction assessment software, we strongly believe that you should try. This is accomplished using a comprehensive worldwide cptbased liquefaction. It is a windowsbased program with graphical presentations for geotechnical reports.
Spreadsheets are hard to preserve and it is time consuming to do all the columns and rows of calculations using. Liquefaction potential of sands using the cpt journal of. Abstracta probabilistic cone penetration test cpt based liquefaction triggering procedure for cohesionless soils is derived using a maximum likelihood method with an updated case history. Liqsvs is a replacement of our liqit liquefaction assessment software. Evaluation of the cone penetrometer test for sptliquefaction assessment. Origin of cpt based methods all methods have similar origins. Download novocpt today and explore all the features. Pdf comparison of sptcpt liquefaction evaluations and. From cliq software you can evaluate liquefaction potential of sites by using spt, cpt and.
Soil liquefaction assessment software from cpt cptu data. If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Liqit is a soil liquefaction analysis software for the assessment of liquefaction potential based on commonly used field data spt, cpt and vs. N2 relationships between cone penetration tip resistance and the.
Comparing cpt and vs liquefaction triggering methods p. Which is the best software to assess liquefaction potential of soil using the spt cpt data from field. Liquefaction spt liqspt program is a windows based program that performs three tasks. Procedures and methods for a liquefaction assessment using geostudio 2007 1 introduction the purpose of this document is to highlight the key issues in a liquefaction assessment, and to outline the procedures and methods that can be used in geostudio 2007 to perform such an assessment.
Dec 24, 2016 determination of seismic liquefaction susceptibility of soils is an imperative task in earthquake science. Both cpt and shear wave velocity based methods were used in the liquefaction assessment with a particular emphasis on the liquefaction potential of the pleistocene aged soils. Evaluation of soil liquefaction using the cpt part 1 dr. Novo tech software innovative solutions for geotechnical. Yangon city is not only financial but also most populated city in myanmar. Liquefaction prediction and assessment charts, originally developed by seed and idriss, have been widely used for such design in practice, as well as for disaster prevention and mitigation. Evaluation and mitigation of liquefaction hazard for.
Liquefaction assessment geoconsult geotechnical engineers. The analysis framework is described in idriss and boulanger 2008 except for the revised magnitude scaling factor msf developed herein that accounts for the effects of soil type and denseness. Evaluation of soil liquefaction using the cpt part 1. Evaluation of liquefaction potential using neuralnetworks. Cpt liquefaction worked examples using cliq version 2 gregg. Attention turned to the possibility of using in situ penetration tests to assess the density and hence the resistance of soils in situ to liquefaction. A variety of techniques exist to remediate potentially liquefiable soils and mitigate. Cpt liquefaction worked examples using cliq version 2.
Field assessment of liquefaction prediction models based. Simply select your manager software from the list below and click. It performs liquefaction analysis, dynamic settlement and lateral displacement calculations. It covers liquefaction assessment using various empirical methods, and estimation of postliquefaction lateral spread and reconsolidation settlement of the site. Vs liquefaction assessment a seismic cpt was also performed at site c. As with all of our software, all input and output data can be exported to an microsoft excel file type for further manipulation. Simplified cpt performancebased assessment of liquefaction and effects. Cpt liquefaction software cliq is more advanced than the cpt section of the current liqit software and provides users an easy to use graphical environment specifically tailored for cone penetration test. Liquefaction of loose saturated cohesionless soils under the effect of strong ground motion, is one of the most complex topic that the geotechnical earthquake engineer can face. Review of geotechnical reports addressing liquefaction 1 background in response to damaging earthquakes in california, in 1990 the state legislature passed the seismic hazards. Cpt liquefaction software cliq is more advanced than the cpt section of the current. Patient ruleinduction method for liquefaction potential. Initially, this involved implementing the three chosen cpt based liquefaction assessment methods and calculating the corresponding lpi.
Presented also are the most widely accepted methods for evaluating the liquefaction potential of cohesionless oils in level ground, for estimating earthquakeinduced settlements and. Cone penetration test cptu processing software novocpt. Pdf evaluation of the cone penetrometer test for spt. In this test, data is typically collected at every 20 to 30 mm depth interval, and therefore, the results of cpt test is a large digital dataset. Peter robertson and is considered to be one of the most uptodate software available for assessing liquefaction. Analysis of liquefaction potential, dynamic settlement of soil layers above and below the groundwater gwt table and lateral spreading calculations if you have a sloping ground. Cpt liquefaction software cliq is more advanced than the cpt section of the. The analysis framework is described in idriss and boulanger 2008 except for the revised magnitude. Feb 19, 2011 liquefaction software free download liquefaction top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. Novocpt cone penetration test interpretation software. Cpt primary measurements include tip resistanceqc, sleeve frictionfs, and pore pressureu.
This proposal is based upon information from various sources including. Simplified liquefaction prediction and assessment method. Validation of three liquefaction assessment software packages with cpt data from the. These studies have resulted in the development of liquefaction assessment charts based on sptn, cpt q c. T1 liquefaction resistance using cpt and field case histories. It also includes the latest assessment procedure developed by. Education software downloads liquefaction spt analysis by soil structure, inc. To develop the prim model, a comprehensive database. Download liquefaction analysis software for free windows. This webinar provides worked examples of cpt based liquefaction analyses using the software cliq v2 cliq v2 has several new features that will be demonstrated during this webinar. Further technical specifications of novoliq are presented below. Novocpt is a powerful, userfriendly geotechnical software for processing and interpretation of cone penetration test data.
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