The application of continuous surface wave testing for settlement analysis with reference to a full-scale load test for a bridge at Pont Melin, Wales, UK

Heymann, G.; Rigby-Jones, J; Milne, Callum

doi:10.17159/2309-8775/2017/v59n2a6

Cited by 3 publications

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, SASW data and CSW data were analysed using Python codes developed in-house using procedures that have been well documented in the literature (McCaskill 2014;Groenewold 2016;Strobbia 2003;Hebeler & Rix 2001;Heisey et al 1982;Bouazza & Kavazanjian 2000;Heymann 2007). The Python codes are available in Ntaote (2022).…”

Section: Repeatability Comparisonmentioning

confidence: 99%

Experimental comparison of active seismic surface wave tests on shallow and deep bedrock sites

Ntaote,

Heymann

2023

J. S. Afr. Inst. Civ. Eng.

View full text Add to dashboard Cite

Active seismic surface wave tests are tests during which signals are generated by artificial sources such as sledgehammers, drop weights and fixed or variable frequency shakers. A number of active seismic surface wave tests have become popular in the geotechnical industry. Interestingly, different surface wave tests are popular in different regions of the world, presumably because the tests require different equipment, expertise and numerical analysis techniques. Few studies have been done to compare seismic surface wave tests directly. This study investigated the performance of three active seismic surface wave tests, namely the spectral analysis of surface waves (SASW), multi-channel analysis of surface waves (MASW) and continuous surface wave (CSW) tests. This paper reports the performance of the three tests with regard to repeatability, susceptibility to near-field effects, and maximum and minimum measurement depths at both a shallow and a deep bedrock site.

show abstract

Section: Repeatability Comparisonmentioning

confidence: 99%

Experimental comparison of active seismic surface wave tests on shallow and deep bedrock sites

Ntaote,

Heymann

2023

J. S. Afr. Inst. Civ. Eng.

View full text Add to dashboard Cite

show abstract

Using shear modulus to predict the bearing capacity of strip foundations on sand

Murison,

Heymann

2024

E3S Web of Conf.

View full text Add to dashboard Cite

This paper reports results of a study to predict load-settlement behaviour of strip foundations on a dry uncemented sand using only soil stiffness data, under both working loads and extreme loads. This involved predicting the strength of a foundation system without using any strength parameters. A non-linear stepwise load-settlement prediction algorithm was utilised, which used the small-strain shear modulus of layers below the footing, a suitable stiffness modulus reduction curve and elasticity theory. The algorithm was adapted to predict the ultimate bearing capacity, as well as to construct astress-settlement curve and determine the bearing pressure experienced beneath a foundation at any particular settlement. The method was evaluated using two different sets of modulus reduction curves, for small-scale model foundations on loose, medium dense and dense sand. Model tests were conducted at 1g. Particle Image Velocimetry (PIV) was used to observe strains within the soil during loading. These strains were used to calculate the shear modulus of discrete layers throughout loading and back-estimate the layer small-strain shear moduli. Additionally, the mode of shear failure for each test at ultimate bearing capacity was observed using PIV. Modulus reduction curves that initially degrade shear modulus rapidly beyond the elastic threshold strain (0.001%) gave superior predictions under the given conditions. Using such curves, ultimate bearing capacity predictions produced errors of 0.4% to 10.8%. Using the same input parameters, stresssettlement predictions were of satisfactory accuracy over the entire settlement range.

show abstract

Engineering challenges building on Grade D chalk in East Anglia

Williamson

Solera

2018

Engineering in Chalk

View full text Add to dashboard Cite

The application of continuous surface wave testing for settlement analysis with reference to a full-scale load test for a bridge at Pont Melin, Wales, UK

Abstract: Heymann G, Rigby-Jones J, Milne CA. The application of continuous surface wave testing for settlement analysis with reference to a full-scale load test for a bridge at Pont Melin, Wales, UK. J. S. Afr. Inst. Civ. Eng. 2017:59(2), Art. #1245, 10 pages. http://dx

Cited by 3 publications

References 12 publications

Experimental comparison of active seismic surface wave tests on shallow and deep bedrock sites

Experimental comparison of active seismic surface wave tests on shallow and deep bedrock sites

Using shear modulus to predict the bearing capacity of strip foundations on sand

Engineering challenges building on Grade D chalk in East Anglia

Contact Info

Product

Resources

About