...Elin Asta Olafsdottir; Bjarni Bessason; Sigurdur Erlingsson; Amir M. Kaynia ABSTRACT Multichannel analysis of surface waves (MASW) is a noninvasive active-source technique for determination of near-surface shear wave velocity ( V S ) profiles. Here we introduce and describe MASWavesPy, an open...

...Radhavi A. Samarakoon; Isaac L. Kreitzer; John Scott McCartney ABSTRACT This study investigates linkages between volume change, pore fluid drainage, shear wave velocity, and temperature of soft clays using a thermal triaxial cell equipped with bender elements, a measurement approach that has...

... based on measured responses, such as the velocity of propagating shear waves. This paper presents the development of a system that enables the measurement of shear wave velocity ( V S ) along different orientations and polarization planes using seven pairs of piezoelectric bender elements (BEs...

... earthquake bender element shear wave velocity volumetric strain constant volume References Airey , D. W. , Budhu   M. , and Wood   D. M. . 1985 . “ Some Aspects of the Behavior of Soils in Simple Shear ,” In Developments in Soil Mechanics and Foundation Engineering , vol. 2...

... at-rest lateral earth pressure condition will not be maintained. A procedure to back-calculate the lateral earth pressure coefficient ( K ) is presented in this paper. In addition, two experimental methods that are implemented to evaluate K by measuring the shear wave velocity from centrifuge-based air...

... designed and used at Western University is upgraded to measure shear wave velocity ( V S ) and enable anisotropic consolidation of soil specimens using a hydraulic piston. In addition to V S , MCPT can also measure cone tip resistance, sleeve friction, and excess pore water pressure developed behind...

... procedure for BE testing (ASTM D8295-19, Standard Test Method for Determination of Shear Wave Velocity and Initial Shear Modulus in Soil Specimens Using Bender Elements ), the use of high-frequency pulses for the simultaneous measurement of compressional ( V P ) and shear ( V S ) wave velocities...

... responses in variations of the circumferential stress σ c ′ and radial stress σ r ′ , measured by the tactile pressure sensors. 22 08 2019 01 12 2020 23 02 2021 tomographic images bender element pile installation tactile pressure sensor shear wave velocity References...

...Muhammad Zayed; Ahmed Ebeido; Athul Prabhakaran; Kyungtae Kim; Zhijian Qiu; Ahmed Elgamal Dynamic ground and ground-structure responses are heavily dependent on the soil shear wave velocity. During seismic excitation, soil stiffness inferred from the shear wave velocity ( V s ) might change...

...Mahmoud N. Hussien; Mourad Karray The piezoelectric ring-actuator technique (P-RAT) is a recent laboratory technique for the measurement of shear wave velocity ( V s ) of soils. The measurement is based on transmission of a mechanical signal through the soil specimen with source and receiver...

...Abolhasan Sharifi; Mohammad Sharifipour; Amir Rizvandy Evaluating the influences of soil particle size on the dynamic behavior of soils during wave propagation has been an important issue in geotechnical engineering. Heretofore, the effects of particle size on shear wave velocities in soils have...

...Alfonso Fernández Lavín; Efraín Ovando Shelley The determination of shear wave velocity ( V s ) using bender elements can be affected by the near-field effect. This phenomenon hinders the identification of the S-wave arrival time of an output signal. Multiple alternatives have been presented...

... across/through ground improvement elements like stone columns. The DPCH instrumentation, testing methodology, and data reduction techniques are explained in detail in this article, and results from several sites are discussed. Keywords shear wave velocity, compression wave velocity, direct-push, seismic...

... diameter DSS device as well as test data generated for two materials with oversized particles, specifically pea gravel and municipal solid waste, are presented. The device has the capability to execute shear wave velocity measurements using both bender elements and accelerometers, as well as monotonic...

.... Measurements were carried out for sand samples with different relative density, pressure/deformation, diameter/height, dry/saturated and varying the frequency, amplitude, and type of the triggered electric signals. The shear wave velocity and elastic shear modulus increased with relative density and effective...

... on a uniform dry sand to investigate the in-flight soil parameters by measuring shear wave velocity ( V s ) via bender elements (BE), as the V s of the soil is directly related with soil properties. Three plausible conditions likely to influence the soil parameters were discussed in this paper: (i) boundary...

... by the discussers to the floating wall consolidometer based bender element testing system in the original paper (Kang, X., Kang, G.-C., and Bate, B., 2014, “Shear Wave Velocity Anisotropy of Kaolinite Using a Floating Wall Consolidometer-Type Bender Element Testing System,” Geotech. Test. J ., Vol. 37, No. 5, pp...

...M. Finas; H. Ali; G. Cascante; P. Vanheeghe Dynamic properties of soils, such as shear wave velocity and damping, are some of critical parameters in the design of civil infrastructures subjected to vibrations from earthquakes and machine foundations. Bender element (BE) testing is used...

... measurements and in situ unit weight measurements were also made. Testing equipment, eld setup, testing procedure, data analysis, and examples of test results are presented. Keywords dynamic properties, compression wave velocity, shear wave velocity, eld testing, nonlinear shear modulus, shearing strain...

... kaolinite's shear wave velocity ( V s ), thereby quantifying the small strain stiffness of soils. Average V s results for RP-2 kaolinite were lower than those for other kaolinites reported in the literature. This was postulated to be primarily due to the longer and more tortuous chains of particle contacts...