RAPPORT - Göteborgs Stad

Landslide risks in the Göta River valley in a changing climate

Soil type A is rock crystalline, and similar soil types with wave shear velocity more than 914 m/s (3000 ft./s). Soil type B is dense soil from strong alluvium or dense sands, silts, and stiff clays with shear strengths more than 72 kPa (1500 psf), and is for depths less than 60 m (200 ft.) and overlying rock strata. Soil Profile Type. Average Shear-Wave Velocity to 30-m depth A > 1500 m/s, hard rock. B. 760 m/s < < 1500 m/s, rock. C. 360 m/s < < 760 m/s, very dense soil and soft rock.

Shear wave velocity V s and small-strain shear modulus G 0 are the key parameters in defining material response to various dynamic loadings. 2016-03-11 Dynamic soil stiffness, as indicated by either shear modulus or shear wave velocity, is a prerequisite parameter for th& dynamic analysis ot earthen structures, founciations for superstructures, and free-field seismic response. 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 Vs 5aðs9m=1 kPaÞ b, where the a factor is the velocity at 1 kPa, and the b exponent captures the velocity sensitivity to the state of stress. The small-strain shear stiffness, or Shear wave propagation in soil is a physical phenomenon and has been used widely for monitoring and seismic property assessment in geotechnical engineering.

Landslide risks in the Göta River valley in a changing climate

Average Shear-Wave Velocity to 30-m depth A > 1500 m/s, hard rock. B. 760 m/s Since Shear wave velocity is closely related to Shear strength and stiffness of material, It is used to evaluate engineering properties. In general Soft soils : 100m/s - 200m/s (Avg.

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Låboratory test results (Roesler 1979; Stokoe et al. 1985; Belloti et al. 1996) show that the velocity of a propagating shear wave depends equally on principal stresses in … Abstract: A database of shear-wavevelocity (V s) measurements using a variety of techniques and soil properties measured on high-quality samples for 28 Norwegian sites has been established. The purpose was to evaluate the different methods of measuring V s, to present guide- … parameter has been discovered to have a direct correlation with the small-strain shear wave velocity of a soil [1].

Liquefaction phenomenon has been widely observed in loose to medium non-cohesive soils during the past earthquakes (e.g., Alaska 1964 and Tohoku 2011 earthquakes) and produced tremendous failures in the ground and civil An investigation to systematize empirical equations for the shear wave velocity of soils was made in terms of four characteristic indexes. The adopted indexes are the N ‐value of the Standard Penetration Test, depth where the soil is situated, geological epoch and soil type.
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The seismic surface wave method (MASW) is the simplest and a very efficient way of measuring the shear-wave velocity in the field.

This study concerns the propagation of waves in soil, and more speciﬁcally the shear wave velocity of sand. The shear wave velocity is a dynamic param-eter highly dependent upon variables such as void ratio, conﬁning pressure and strain amplitude in the material. Research has shown that the shear wave Substituting in this expression H < 30 m, V 1 = 300 m/s, V 0 = 800 m/s, getting the values of average values of shear wave velocity , which differs both from the values in the lower half-space and from the values of the velocity in the layer of loose soil. shear wave velocity and penetration resistance using MASW technique T.P.Thaker & K.S.Rao Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi-110016, Delhi, India ABSTRACT Prediction of ground shaking response at soil sites requires knowledge of the soil, expressed in terms of shear wave velocity (Vs).
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RAPPORT - Göteborgs Stad

1985; Belloti et al. 1996) show that the velocity of a propagating shear wave depends equally on principal stresses in … shear wave velocity of Boston Blue Clay (BBC) to be used in soil amplif-ication studies (Seed and Idriss, 1969) in the design of structures in the Boston area against earthquakes.

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In-line rheology of cement grouts - Feasibility study of - SBUF

In other words, shear wave velocity in low strains can be used as a unique and reliable parameter that can be used in microzonation maps.