Modern Earth Structures for Transport Engineering

Vaníček, Ivan; Jirásko, Daniel; Vaníček, Martin

doi:10.1201/9780429263668

Cited by 9 publications

(7 citation statements)

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“…Looking at the material as a resource as indeed it is, then by adding binders, removing water, compacting it, or combining it with a geotextile, it becomes possible to make it into a suitable building material for many applications. Similar suggestions have been presented previously for example by Vaníček et al [1] and that the consumption of natural aggregates could be decreased by improving the properties of the natural aggregates or applying non-standard aggregates. In the same reference several possibilities for including sustainability as an aspect in design is presented.…”

Section: Appropriate Building Materialreuse Of Materialssupporting

confidence: 84%

Directing classical geotechnical engineering to future challenges

Franzén,

Garin

2023

APP

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Geotechnical engineers have traditionally been focused on soil mechanics, rock mechanics and engineering geology. Thus it has been sufficient to master these topics to be recognized as a key participant in building and civil engineering projects. However, gradually concerns within both projects themselves and societies more generally are shifting towards new questions and challenges. Therefore, ensuring that geotechnical engineers remain central to all relevant projects, there is a need to master increasingly different and new ways of working together, obtaining new skills and increasing professionally pertinent knowledge and experience. This paper will give an overview of the issues geotechnical engineers have to address and master, if they are to take a lead in projects that seek to meet future challenges. This is really about working in a multi-disciplinary environment, using relevant technical methods without losing specifically engineering judgement, and then using open-minded communication skills to question previous practices that can proceed to find solutions to those future challenges identified. How is this to be done successfully within the profession? This paper offers some ideas. All professionals, and geotechnical engineers cannot be an exception, want to influence and contribute to solving current and future challenges, and thus we need to expand our knowledge awareness. The list of topics where we need to develop our knowledge is rather lengthy and include environmental considerations, contracts, law, conceptualisations of sustainability, robustness, monitoring, digitalisation, standardisation, and climate change. This paper will highlight two examples where geotechnical engineers with increased knowledge sensitivity and skills could make a significant contribution. First, there is an example from Göteborg about limiting a project impact within its zone of influence. Designing the geotechnical structure itself is only the first step, for in addition there is a need to control the building process, have sufficient monitoring, handling the expectations of society while ensuring recognition and use of a particular professional scope of operation. The other example concerns the re-use of material in our embankments to limit transportation. Which criteria should be used to determine the suitability of materials for re-use? How can we cope with societal reactions? Finally, the paper will discuss how geotechnical engineers, by combining geotechnical knowledge with new skills, can contribute with a sustainability foundation involving both relevant concepts and principles looking forward.

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Section: Appropriate Building Materialreuse Of Materialssupporting

confidence: 84%

Directing classical geotechnical engineering to future challenges

Franzén,

Garin

2023

APP

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“…4. The result of the conversion of the analog voltage signal into the ADC value in the NI USB 6008 Then it is converted again into pressure as in (1), and the pressure is obtained at 2.5 kg/cm2 for the maximum pressure scale, as shown in Fig. 6.…”

Section: A Tool Designmentioning

confidence: 99%

“…The process of determining the response rate of the soil medium in moving vehicles has received considerable attention in the past. The finished retaining wall along road side will be loaded by heavy traffic on a roadway situated just behind the crest [1]. The observed movement can be interpolated between the values for Ka and Ko to estimate the actual pressure being applied to the retaining wall [2] [3].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Soil Lateral Pressure Measurement due to Vehicle Under Constant Speed Based on LabVIEW Software

Handiman,

Redana,

Hidayati

et al. 2022

ICSECC

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The weight of the vehicle should be able to reflect the magnitude of the horizontal pressure that occurs on the ground being passed. However, until now practically the calculation of lateral earth pressure on the roadside is still calculated from the static load which is considered equivalent. Therefore, this study aims to provide a simple formula for calculating lateral stresses caused by vehicles at constant speed. Measurements were made by recording the lateral pressure in real time using the load cell sensor system and the LabVIEW NI (National Instrument) processing unit, with a reading of ± 0.02%. Data collection was carried out through observation and the results showed that the greatest effect occurred when the load position was at the closest distance to the monitoring device. The monitored stress distribution is quite in line with the Boussinesq approach to static loads. The lateral stresses that occur are compared with the results of the Boussinesq formula for a constant load is about 0.003 times. However, further research still needs to be done to obtain the exact relationship formula between vehicle weight and the amount of pressure when running at a constant speed.

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“…Instabilities on the landside may also be initiated by surface erosion during overflow. The resistance against such action can be increased by placing a reinforcing layer of standard geosynthetics or other specific products [68] such as biopolymers [69,70] over the slope, but in this case, there is no such additional protection. The same applies for the riverside slope where surface erosion might be caused by the flow of the river and during the rapid decrease of water level in the river (RDD).…”

Section: Case Studymentioning

confidence: 99%

Fragility Curves for Slope Stability of Geogrid Reinforced River Levees

Rossi

Bačić

Kovačević

et al. 2021

Water

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When constructing flood protection structures such as river levees, oftentimes due to various factors engineers must design composite structures, i.e., reinforced earthen structures which comply with all the stability criteria. The most common way of reinforcing such structures is the usage of geosynthetics, or mostly geogrids when talking about stability. Since geosynthetics are man-made materials produced in a controlled environment and go through quality control measures, their characteristics contain a negligible amount of uncertainty compared to natural soils. However, geosynthetic handling, their installation in the levee, and their long-term degradation can all have significant effects of variable magnitude on geosynthetic characteristics. These effects and their variability can be considered as random variables, which can then be used in probabilistic analyses together with soil properties. To investigate the effects of the geogrid’s resistance variability on slope stability compared to soil properties variability, probabilistic analyses are conducted on a river levee in northern Croatia. It is found that the geogrid’s variability generally has very little effect on the total uncertainty compared to the friction angle’s variability, but out of the three geogrid layers used the top grid has the most influence.

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Modern Earth Structures for Transport Engineering

Cited by 9 publications

References 0 publications

Directing classical geotechnical engineering to future challenges

Directing classical geotechnical engineering to future challenges

Implementation of Soil Lateral Pressure Measurement due to Vehicle Under Constant Speed Based on LabVIEW Software

Fragility Curves for Slope Stability of Geogrid Reinforced River Levees

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