Measurement and use of shear wave velocity for evaluating dynamic soil properties

proceedings of a session

Publisher: ASCE in New York, N.Y

Written in English
Cover of: Measurement and use of shear wave velocity for evaluating dynamic soil properties |
Published: Pages: 78 Downloads: 391
Share This

Subjects:

  • Soil dynamics -- Testing -- Congresses.,
  • Shear waves -- Congresses.

Edition Notes

Includes bibliographies and indexes.

Statementsponsored by the Geotechnical Engineering Division of the American Society of Civil Engineers in conjunction with the ASCE Convention in Denver, Colorado, May 1, 1985 ; edited by Richard D. Woods.
ContributionsWoods, Richard D., American Society of Civil Engineers. Geotechnical Engineering Division., ASCE National Convention (1985 : Denver, Colo.)
Classifications
LC ClassificationsTA710.5 .M4 1985
The Physical Object
Paginationv, 78 p. :
Number of Pages78
ID Numbers
Open LibraryOL2557157M
ISBN 100872624560
LC Control Number85070486

Case Study: Shear Wave Velocity Measurements Before and After Dynamic Compaction of Cohesionless Soil Deposits ENG Phil C. Sides, US. Bureau of Reclamation SUmARY Crosshole shear wave velocity measurements were used to evaluate the effectiveness of dynamic compaction of foundation soils at the Jackson Lake damsite, Wyoming. shear wave velocity (Vs), damping ratio (D), shear modulus (G), and Poisson’s ratio (ν), which are also used in many non-dynamic type problems. The problem of predicting the bearing capacity of soils from wave propagation properties is that the soil undergoes only very low strain during the wave propogation. These parameters are used in both analyses of soil behavior under both static and dynamic loads where the elastic constants are input variables into the models defining the different states of deformations such as elastic, elasto-plastic, and failure. Another important use of estimated shear wave velocities in. Guide for Shear-Wave-Based Liquefaction Potential Evaluation Ronald D. Andrus,a) walkingshops.com, Kenneth H. Stokoe II,b) walkingshops.com, and C. Hsein Juanga) Small-strain shear-wave velocity measurements provide a promising ap-proach to liquefaction potential evaluation. In some cases, where only seis- rameter required for dynamic soil response and soil.

This paper is focussing on the results at six points that are distributed on two measurement lines perpendicular to the tunnel and labeled as FF (Figure 1 and Table 1). to have a good idea of the dynamic soil properties in the full area where propagation of waves from allowing the estimation of the shear wave velocity of the soil. Since Cited by: 2. design. Shear wave velocity and damping ratios are dynamic properties required for soil characterization. The new National Building Code of Canada (NRC ) and allows the use wave velocity and acceleration factors for different soil classes; which are selected based on the average shear wave velocity of the top 30 m of the site profile. This research attempts to compare the results of two field methods used to evaluate liquefaction resistance of soil, i.e. SPT based on simplified procedure proposed by Seed and Idriss () and shear wave velocity (Vs) on the basis of Andrus and Stokoe () process using . SHEAR WAVE VELOCITY AND MODULUS OF A MARINE CLAY. A study was conducted on Boston Blue Clay to develop input for later soil amplification and soil structure interaction studies. The study consisted of (a) direct in situ measurement of the shear wave velocities by seismic cross-hole techniques, (b) obtaining samples of the soil from which to.

This is why seismic shear-wave velocity (Vs) is often used as a direct indicator of a material's stiffness. Accurate measurement of seismic velocities (Vp and Vs) has been one of the most important subjects in the history of theoretical and exploration geophysics. bedrock. In order to capture the dynamic behaviour of soil deposits, non-linear time history analyses using ‘pressure dependent hyperbolic’ model is conducted. Meanwhile, the soil model assumes that the shear wave velocity, the unit weight, and material damping of the bedrock are m/s, t/m 3, and 2%, respectively. Requirements for soil-specific correlation between shear wave velocity and liquefaction resistance of sands Mohammad Mehdi Ahmadin, Nima Akbari Paydar Department of Civil Engineering, Sharif University of Technology, P.O. Box , Azadi Avenue, Tehran, Iran. Correlations between shear wave velocity and blow count, geologic setting, and site stratigraphy are therefore potentially useful at least as a screening tool for identifying a subset of bridges where geophysical measurements would be the most beneficial. Literature Review.

Measurement and use of shear wave velocity for evaluating dynamic soil properties Download PDF EPUB FB2

Measurement and Use of Shear Wave Velocity for Evaluating Dynamic Soil Properties [Richard D. Woods] on walkingshops.com *FREE* shipping on qualifying walkingshops.com: Richard D. Woods. What is shear wave velocity in the following soils. soil strength and soil mechanics articles.

There is a book published by the Society of Exploration Geophysicists in on Near-Surface. Get this from a library. Measurement and use of shear wave velocity for evaluating dynamic soil properties: proceedings of a session. [Richard D Woods; American Society of Civil Engineers.

Geotechnical Engineering Division.;]. Shear wave velocity measurements and soil–pile system identifications in dynamic centrifuge tests Article (PDF Available) in Bulletin of Earthquake Engineering 12(2) · April with Reads.

Small-strain shear wave velocity measurements provide a promising supplement and in some cases, where only geophysical measurements are possible, may be the only alternative to the penetration-based approach.

This report presents guidelines for evaluating. Seismic CPT to Measure In-Situ Shear Wave Velocity. A new test, called the seismic cone penetration test (SCPT) is described. A small rugged velocity seismometer has been incorporated into an electronic cone penetrometer.

The combination of the seismic downhole method and the CPT logging provide an extremely rapid, reliable and economic means of determining stratigraphic, strength and modulus Cited by: Dec 15,  · Ohta T, Goto N, Kagami H, Shiono K () Shear wave velocity measurement during a standard penetration test.

Earthq Eng Struct Dyn – As cited in Hanumantharao C, Ramana GV () Dynamic soil properties for microzonation of Delhi, India. May 17,  · Stokoe K H, Nazarian S. Use of Rayleigh waves in liquefaction studies. In: Woods R D, ed. Measurement and Use of Shear Wave Velocity for Evaluating Dynamic Soil Properties.

ASCE, New York, 1– Google ScholarCited by: 9. Evaluation of Shear Modulus and Damping in Dynamic Centrifuge Tests A.J. Brennan1, N.I.

Thusyanthan2 & S.P.G. Madabhushi3 CUED/D-SOILS/TR () 1 Research Fellow, Wolfson College, University of Cambridge where Vs is shear wave velocity and ρ. This test method covers the laboratory use of piezo-ceramic bender elements to determine the shear wave velocity in soil specimens.

A shear wave is generated at one boundary of a soil specimen and then received at an opposite boundary. The shear wave travel time is measured, which over a known travel distance yields the shear wave velocity.

How to Measure Shear-Wave Velocity (Vs) Vs can be measured through several different approaches: surface-wave survey, refraction survey, down-hole survey, cross-hole survey, and laboratory measurement (see illustrations below). SHEAR WAVE VELOCITY AND ITS EFFECT ON SEISMIC DESIGN FORCES AND LIQUEFACTION ASSESSMENT Thomas G.

Thomann Khaled Chowdhury URS Corporation URS Corporation New York, NY (USA) New York, NY (USA) ABSTRACT The shear wave velocity of soil and rock is one of the key components in establishing the design response spectra, and therefore the seismic. Aug 24,  · Outline 1 Introduction Dynamic Soil Properties 2 Measurement of Dynamic Soil Properties Field tests, Laboratory tests 3 Stress-Strain behavior of Cyclically Loaded Soils Equivalent linear model, Shear modulus, Damping ratio Cristian Soriano Camelo (UFRJ) Soil Dynamics August 17ht, 2 /.

Shear wave velocity is an important parameter for evaluating the dynamic behaviour of soil in the shallow subsurface. Thus site characterization in calculating seismic hazards is usually based on the near surface shear wave velocity values.

The average shear wave velocity for the top 30 m of soil is referred to as V S For earthquake Cited by: Nov 11,  · Shear wave propagation in soil is a physical phenomenon and has been used widely for monitoring and seismic property assessment in geotechnical engineering.

Shear wave velocity V s and small-strain shear modulus G 0 are the key parameters in. Significant prior publications dedicated to dynamic soil properties are cited. Two major advancements in dynamic soil property measurement are highlighted, namely: Combined cyclic torsional shear and resonant column, and wave propagation velocity measurements with bender walkingshops.com by: This paper was attempted to determine dynamic characteristics of peat soil such as shear wave velocity (Vs) using Multi-channel Analysis of Surface Wave (MASW) technique and shear modulus using a conversion of shear wave velocity with empirical formula where the density of peat was needed thus the density were calculated after collecting the Cited by: 2.

Among these testing methods, the shear wave velocity technique is thought to best represent the dynamic properties of soils. Because the soil liquefaction phenomenon is directly related to the dynamic properties of soil, the shear wave velocity /96/$ Elsevier Science walkingshops.com by: Shear wave velocity (vs), dynamic shear modulus G, and damping characteristics of soils are important parameters required for dynamic site response analysis as well as for design and performance evaluation of earth structures and foundations.

Proper choice of such input soil parameters is anCited by: Abstract. In this chapter, liquefaction potential of soil is evaluated within deterministic as well as probabilistic framework based on the post-liquefaction shear wave velocity (V s) measurement data using a soft computing technique, multi-gene genetic programming (MGGP), which is a variant genetic programming (GP).On the basis of the developed limit state function by the MGGP, a mapping Cited by: 2.

A procedure for evaluating liquefaction resistance of soils based on the shear wave velocity measurements is outlined in the paper.

The procedure follows the general formal of the Seed-Idriss simplified procedure. In addition, it was developed following suggestions from industry, researchers, and practitioners.

The procedure correctly predicts moderate to high liquefaction potential for over Author: Sheng Jie Di, Ming Yuan Wang, Zhi Gang Shan, Hai Bo Jia.

Luna, R. and H. Jadi, "Determination of Dynamic Soil Properties Using Geophysical Methods," Proceedings of the First International Conference on the Application of Geophysical and NDT Methodologies to Transportation Facilities and Infrastructure, St. Louis, MO, December 1 DETERMINATION OF DYNAMIC SOIL PROPERTIES USING GEOPHYSICAL METHODS.

Source: after Mayne et al. () Figure Soil unit weight relationship with shear wave velocity Unit Weight from Cone Penetration Tests For the CPT, an empirical correlation relates the total unit weight to the measured CPT sleeve friction (Figure ).

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF.

Visit walkingshops.com to get more information about this book, to buy it in print, or to download it as a free PDF. FIELD AND LABORATORY MEASUREMENTS OF DYNAMIC SHEAR MODULUS OF PIEDMONT RESIDUAL SOILS James A. Schneider1, The shear wave velocity, Vs, is a soil property used to determine the shear modulus, G, of the soil: measurement of shear wave velocity will be directly related to the maximum shear modulus.

However, at shallow depths it has been. Field measurement of shear wave velocity of soils Fanyu Zhu, K.R. Peaker and Shaheen Ahmad Shaheen and Peaker Limited, Toronto, Ontario, Canada ABSTRACT In this study, S-wave velocity survey was carried out at a site near a drilled borehole.

The test data of a firm silty clay. The objectives of this study are to investigate the relationship between static and dynamic elastic moduli determined using shear-wave velocity measurements and to demonstrate the practical potential of the shear-wave velocity method for in situ dynamic modulus evaluation.

Three hundred by mm concrete cylinders were prepared from three different mixtures with target compressive Cited by: 5. Jun 01,  · This paper deals with determination of shear wave velocity in the soil directly in-situ by dynamic tests.

Self-developed dynamic excitation impulse device was used in order to excite the soil during the tests. Consequently, accelerations of the soil vibration were measured by portable five-channel measurement equipment.

Recorded data were evaluated by self-developed Square of Accelerations Author: Milan Sokol, Lenka Konecna. The dynamic properties of the soil can be determined in two different ways.

The first one is the common way, using the Rayleigh Waves dispersion on the soil surface, and the back calculation to shear wave profiles. The second approach is the back calculation of the. investigated the effect of compaction energy on the shear stiffness of compacted soil.

This paper examines the effect of compaction en-ergy on the dynamic properties of compacted soil, namely the shear wave velocity and the small strain shear modulus. Specimens compacted at moisture contents ranging from dry to wet of OMC under.

The small-strain shear modulus depends on stress in uncemented soils. In effect, the shear-wave velocity, which is often used to calculate shear stiffness, follows a power equation with the mean effective stress in the polarization plane V s = α (σ m ′ / 1 kPa) β, where the α factor is the velocity at 1 kPa, and the β exponent captures the velocity sensitivity to the state of stress.vertical to the wave propagation direction (see also Fig.3).

In particular the velocity of shear waves propagation, V. s, is a key parameter used for soil characterization, such as the estimation of small-strain stiffness modulus, liquefaction potential, soil seismic response, assessment of the effectiveness of soil improvement methods used in.Jul 07,  · At very low strains (10–6 to 10–4) soil behaviour could be described as elastic, with recoverable deformations.

Dynamic soil properties can be ascertained using field or laboratory techniques through either determining the velocity of wave propagation through the soil, or by direct measurement of the stress–strain response of the soil.