Geotechnical Modelling

Wood, David Muir

doi:10.4324/9780203477977

Cited by 409 publications

(162 citation statements)

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“…In total, 16 tests were conducted by utilizing small-scale 1g model tests, Table 2. Scaling factor used to convert the parameters to prototype units [17] …”

Section: Discussionmentioning

confidence: 99%

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Mitigating the uneven settlement of nearby strip footings on loose saturated sand using concrete pedestals: a model test study

2018

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Adjacency and interfering of footings are a matter of importance in geotechnical engineering. Researchers have studied on the behavior of adjacent footings by several approaches, but the mechanism of such footings under unequal and non-simultaneous surcharges have not been explored to date. In this study, two series of experiments were conducted using small scale 1g models to investigate the behavior of the two adjacent footings under reinforced and unreinforced soil conditions. The footings were installed with different side-to-side spacing and placed on loose saturate sand. The ultimate bearing capacity, settlement, and tilting of footings are evaluated: (1) when the footings are rested on unreinforced sand; and, (2) when the soil underneath the new footing is reinforced by concrete pedestals. The results indicate that reinforcing the new footing by three concrete pedestals in the spacing to footing's width ratio (S/B) of 0 (i.e., two coherent footings) results in 67% increase of the bearing capacity of the new footing compared to that of the unreinforced condition. Also, the settlement and tilting of the old footing adjacent to the new footing decrease respectively up to 250% and 600% in comparison to those of the unreinforced condition. The proposed measure can be considered as an effective improvement technique on the performance of the nearby footings rested on soft granular soils.

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“…In total, 16 tests were conducted by utilizing small-scale 1g model tests, Table 2. Scaling factor used to convert the parameters to prototype units [17] …”

Section: Discussionmentioning

confidence: 99%

“…Also, the scaling factors were assumed in this study. Table 2 shows the applied theory of scaling law defined by Wood [17].…”

Section: Model Scalingmentioning

confidence: 99%

Mitigating the uneven settlement of nearby strip footings on loose saturated sand using concrete pedestals: a model test study

2018

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“…Required structural displacement ductility values vary between 3 and 5 [24], in order to ensure that structural components possess sufficiently high ductility. The ductility factor of the entire poured concrete framework is around 4, the ductility of planted reinforcing bar framework is between 3,826 and 3,995, and the ductility of steel framework is about 2,39 ÷ 2,03, showing Ductile integral cast frames perform much better than entire frames of planted reinforcing bar, and planted reinforcing bar frames show superior ductility over light steel frames.…”

Section: Capacity Displacement and Ductilitymentioning

confidence: 99%

Test research on seismic performance of story-adding frame structure

Ding

Guo

et al. 2016

Teh. vjesn.

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Original scientific paper This paper conducts comparative experiments between reinforced concrete story-adding structure and the lightweight steel story-adding method. Quasistatic test research and a comparison and analysis of the experimental results are also performed for both reinforced concrete story-adding framework and light steel story-adding under the same working conditions. The results showed that although both structural frameworks do meet seismic construction requirements to some degree, the results of experimentation reflect distinct advantages and disadvantages for both methods. Results further indicate the applicability and relevant problems requiring attention for both story-adding methods.Keywords: concrete frame; lightweight steel story-adding; quasi-static testing; reinforced concrete story-adding; seismic performance Ispitivanje seizmičkog ponašanja konstrukcije nosača dodatnog kataIzvorni znanstveni članka U radu se opisuju usporedni eksperimenti između metode za dodatnu konstrukciju kata od armiranog betona i one od lakog čelika. Ispitivanje kvazistatičkog testa te usporedba i analiza eksperimentalnih rezultata također su provedeni i za okvir dodatne konstrukcije od armiranog betona kao i za onaj od lakog čelika pri istim radnim uvjetima. Rezultati su pokazali da iako obije konstrukcije okvira donekle zadovoljavaju seizmičke zahtjeve, postoje i jasne prednosti i nedostaci u obije metode. Rezultati dalje ukazuju i primjenjivost i relevantne probleme na koje je potrebno usmjeriti pozornost za obije metode dodatka kata.

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“…In so doing the path toward the critical state line of the soil in small-scale would resemble that in large-scale and dilation would be suppressed (Cerato and Lutenegger, 2007, LeBlanc et al, 2010, Wood, 2004. However, here the aim is not to scale up the ultimate capacity and the stiffness of the monotonic behaviour.…”

Section: Scope and Aims Of The Modellingmentioning

confidence: 99%

Monopod Bucket Foundations Under Cyclic Lateral Loading

Foglia¹,

Ibsen²

2016

IJOPE

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Technical Reports are published for timely dissemination of research results and scientific work carried out at the Department of Civil Engineering (DCE) at Aalborg University. This medium allows publication of more detailed explanations and results than typically allowed in scientific journals.Technical Memoranda are produced to enable the preliminary dissemination of scientific work by the personnel of the DCE where such release is deemed to be appropriate. Documents of this kind may be incomplete or temporary versions of papers-or part of continuing work. This should be kept in mind when references are given to publications of this kind.Contract Reports are produced to report scientific work carried out under contract. Publications of this kind contain confidential matter and are reserved for the sponsors and the DCE. Therefore, Contract Reports are generally not available for public circulation.Lecture Notes contain material produced by the lecturers at the DCE for educational purposes. This may be scientific notes, lecture books, example problems or manuals for laboratory work, or computer programs developed at the DCE.Theses are monograms or collections of papers published to report the scientific work carried out at the DCE to obtain a degree as either PhD or Doctor of Technology. The thesis is publicly available after the defence of the degree.Latest News is published to enable rapid communication of information about scientific work carried out at the DCE. This includes the status of research projects, developments in the laboratories, information about collaborative work and recent research results. Monopod bucket foundations under cyclic lateral loading AbstractThe monopod bucket foundation can be a cost-reducing sub-structure for offshore wind turbines. To avoid problems during the turbine operation, the long-term effect of cyclic loading must be considered in the design of the foundation. In this paper a 1g testing rig is adopted to extend the knowledge on bucket foundations under lateral cyclic loading. The test setup is described in detail and a comprehensive experimental campaign is presented. The foundation is subjected to cyclic overturning moment, cyclic horizontal loading and constant vertical loading, acting on the same plane for thousands of cycles. Three buckets with different embedment ratios are tested. The data interpretation is focused on the long-term permanent rotation of the foundation and, particularly, on understanding how the controlling variables influence the potential for rotation accumulation. New and more general parameters of an empirical model predicting the long-term plastic rotation are proposed on the base of the experimental results. List of notation

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Geotechnical Modelling

Cited by 409 publications

References 0 publications

Mitigating the uneven settlement of nearby strip footings on loose saturated sand using concrete pedestals: a model test study

Mitigating the uneven settlement of nearby strip footings on loose saturated sand using concrete pedestals: a model test study

Test research on seismic performance of story-adding frame structure

Monopod Bucket Foundations Under Cyclic Lateral Loading

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