Effect of sitting time on the breakout force of mat foundation on soft marine clay seabed

On April 4, 2018, 209 days after driving, a static loading test was performed on a 50 m long, strain-gage instrumented, square 275-mm diameter, precast, shaft-bearing (“floating”) pile in Göteborg, Sweden. The soil profile consisted of a 90 m thick, soft, postglacial, marine clay. The groundwater table was at about 1.0 m depth. The undrained shear strength was about 20 kPa at 10 m depth and increased linearly to about 80 kPa at 55m depth. The load-distribution at the peak load correlated to an average effective stress beta-coefficient of 0.19 along the pile or, alternatively, a unit shaft shear resistance of 15 kPa at 10 m depth increasing to about 65 kPa at 50 m depth, indicating an α-coefficient of about 0.80. Prior to the test, geotechnical engineers around the world were invited to predict the load-movement curve to be established in the test—22 predictions from 10 countries were received. The predictions of pile stiffness, and pile head displacement showed considerable scatter, however. Predicted peak loads ranged from 65% to 200% of the actual 1,800-kN peak-load, and 35% to 300% of the load at 22-mm movement.

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INTERACTION ANALYSIS FOR OIL STORAGE TANK ON MARINE CLAY

International Journal of Geomate ◽

10.21660/2015.15.4230 ◽

2015 ◽

Author(s):

Pallavi Badry

Keyword(s):

Storage Tank ◽

Interaction Analysis ◽

Marine Clay ◽

Oil Storage ◽

Oil Storage Tank

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Association between breaks in sitting time and adiposity in Australian toddlers: Results from the GET-UP! study

Scandinavian Journal of Medicine and Science in Sports ◽

10.1111/sms.13327 ◽

2018 ◽

Vol 29 (2) ◽

pp. 259-265 ◽

Cited By ~ 3

Author(s):

Eduarda Sousa-Sá ◽

João R. Pereira ◽

Zhiguang Zhang ◽

Sanne L. C. Veldman ◽

Anthony D. Okely ◽

...

Keyword(s):

Sitting Time

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Stabilization Effect of Anionic Polyacrylamide on Marine Clay Treated with Lime

International Journal of Geomechanics ◽

10.1061/(asce)gm.1943-5622.0001680 ◽

2020 ◽

Vol 20 (6) ◽

pp. 04020050

Author(s):

Huayang Lei ◽

Jinfeng Lou ◽

Xin Li ◽

Mingjing Jiang ◽

Cike Tu

Keyword(s):

Marine Clay ◽

Stabilization Effect ◽

Anionic Polyacrylamide

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Influence of initial water content and strain rate on remolded yield stress in marine clay

Marine Georesources and Geotechnology ◽

10.1080/1064119x.2021.1892246 ◽

2021 ◽

pp. 1-8

Author(s):

Xiaobing Li ◽

Jianpeng Chen ◽

Xiuqing Hu ◽

Hongtao Fu ◽

Jun Wang ◽

...

Keyword(s):

Strain Rate ◽

Water Content ◽

Yield Stress ◽

Initial Water Content ◽

Marine Clay ◽

Initial Water

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Self-tracking of/and time: From technological to biographical and political temporalities of work and sitting

New Media & Society ◽

10.1177/1461444820983324 ◽

2020 ◽

pp. 146144482098332

Author(s):

Paula Saukko ◽

Amie Weedon

Keyword(s):

Public Sector ◽

Work Conditions ◽

Free Time ◽

Office Workers ◽

Sitting Time ◽

User Experiences ◽

Tracking Devices

Self-tracking devices have been observed to accelerate time, be used sporadically and busyness being a barrier to use at work. Drawing on notion of multiple temporalities, this article expands the focus on temporalities of users’ engagement with technologies to analysing them within broader biographical, institutional and political times. The argument is grounded in interviews with UK public sector office workers self-tracking sitting time that featured the following three themes: (1) the participants related their sitting to deteriorated work conditions after government austerity politics and redundancies, (2) the pressurised rhythm of work made it difficult to reduce sitting time and fostered a sense of discontent and powerlessness and (3) the workers did not self-track in their free time, defined as free from monitoring. We suggest that the analytical lens of multiple temporalities expands understanding of user experiences as well as illuminates lived contemporary political and institutional times, characterised by both discontent and powerlessness.

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Association of Physical Activity and Sitting Time with Overweight/Obesity in Chinese Occupational Populations

Obesity Facts ◽

10.1159/000512834 ◽

2021 ◽

pp. 1-7

Author(s):

Fan Yuan ◽

Weiyan Gong ◽

Caicui Ding ◽

Hui Li ◽

Ganyu Feng ◽

...

Keyword(s):

Physical Activity ◽

Lower Risk ◽

Leisure Time ◽

Leisure Time Physical Activity ◽

Active Transportation ◽

Sitting Time ◽

Work Time ◽

Transportation Mode ◽

Activity Intensity ◽

Female Employees

Abstract: The aim of this study was to explore association of physical activity and sitting time with overweight/obesity in Chinese occupational populations for the development of intervention and prevention strategies for obesity. Methods: A total of 23,112 participants were selected from the 2010–2012 China National Nutrition and Health Survey (CNNHS). A logistics regression model was used to examine the associations of physical activity and sitting time with overweight/obesity by gender after adjusting for age, educational level, marital status, and family economic level. Results: The prevalence of overweight/obesity based on the WHO definition and the WGOC definition was 30.8% and 41.3%, respectively. Male employees with moderate and heavy occupation activity intensity had a lower risk for overweight/obesity than those with light occupation activity intensity (moderate: OR 0.90, 95% CI 0.82–0.98; heavy: OR 0.75, 95% CI 0.65–0.86), and the risk of overweight/obesity of male employees with long work-time spent sitting was higher than those with short work-time spent sitting (2–4.9 h/day: OR 1.26, 95% CI 1.14–1.40; ≥5 h/day: OR 1.29, 95% CI 1.15–1.44). The risk of overweight/obesity of male employees with active transportation mode was lower than those with inactive transportation mode (OR 0.91, 95% CI 0.84–0.99), while the risk of overweight/obesity of female employees with active transportation mode was higher (OR 1.14, 95% CI 1.04–1.25). Female employees with leisure-time physical activity (LTPA) for ≥150 min/week had lower risk of overweight/obesity than those with LTPA for <150 min/week (OR 0.69, 95% CI 0.56–0.84). There was no significant association of leisure-time sitting and housework time with overweight/obesity in Chinese occupational populations. Conclusion: Occupation activity intensity, LTPA, transportation mode, and work sitting time were associated with overweight/obesity. Reducing work sitting time, moderate and heavy occupation activity intensity, and an active transportation mode could help male employees decrease the risk of overweight/obesity. Increasing leisure-time physical activity could reduce the risk of overweight/obesity in women. Our findings provided insight into the association of physical activity and sitting time with overweight/obesity. It will be necessary to carry out workplace-based interventions, have an active transportation mode, and increase leisure-time physical activity to decrease the risks of overweight/obesity.

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