Failure of concrete canal lining on fine sandy soils: a case study for the Saveh Project

2008 ◽  
Vol 57 (1) ◽  
pp. 83-92 ◽  
Author(s):  
Hassan Rahimi ◽  
Nader Abbasi
Keyword(s):  
Sandy Soils ◽  
Concrete Canal

Sustainable long-term intensive application of manure to sandy soils without phosphorus leaching: a case study from Ghana

2015 ◽  
Vol 65 (8) ◽  
pp. 747-754
Author(s):  
S.K. Asomaning ◽  
M.K. Abekoe ◽  
G.N.N. Dowuona ◽  
O.K. Borggaard ◽  
J.A. Kristensen ◽  
...  
Keyword(s):  
Sandy Soils ◽  
Phosphorus Leaching

scholarly journals Influence of Soil Liquefaction on the Structural Performance of Bridges During Earthquakes: Showa Bridge as A Case Study

2018 ◽  
Vol 7 (4.20) ◽  
pp. 146
Author(s):  
Mohammed K. Dhahir ◽  
Wissam Nadir ◽  
Mohammed H. Rasool
Keyword(s):  
Lateral Displacement ◽  
Bending Moment ◽  
Sandy Soils ◽  
Soil Liquefaction ◽  
Shallow Foundations ◽  
Structural Performance ◽  
Excess Pore Pressure ◽  
Regular Structures ◽  
Loss Of Contact

Liquefaction is generally defined as the loss of contact between soil particles during shaking (earthquakes), and it usually occurs in saturated loose sandy soils where the timescale is insufficient for the water to drain from the pores, thus increasing the excess pore pressure, and thereby floating the sand particles. For regular structures with shallow foundations, liquefaction normally leads to loss of soil strength, which leads to settlement of foundations. On the other hand, bridges are usually supported with piles foundation, which introduces additional effects during liquefaction. Therefore, this paper examines the possible effects of liquefaction on the structural performance of bridges during earthquakes. Furthermore, the failure of Showa Bridge during the 1964 Nagata earthquake was also discussed and analyzed as an example of the catastrophic effects of liquefaction. The analysis shows that the most influential effect during liquefaction is the increase in the unsupported length of piles, which leads to several adverse effects such as increasing the lateral displacement, reduce the buckling capacity, increase the bending moment, and reduce the shaft capacity of the pile. Finally, recommendations regarding the design of pile supported bridges in seismic areas with liquefiable soils have also been suggested. 

Strategies to optimize allocation of limited nutrients to sandy soils of the Sahel: a case study from Niger, west Africa

2003 ◽  
Vol 94 (3) ◽  
pp. 311-319 ◽  
Author(s):  
M. Gandah ◽  
J. Bouma ◽  
J. Brouwer ◽  
P. Hiernaux ◽  
N. Van Duivenbooden
Keyword(s):  
West Africa ◽  
Sandy Soils

Zinc in poor sandy soils and associated groundwater. A case study

1990 ◽  
Vol 91 ◽  
pp. 59-77 ◽  
Author(s):  
G.Bas M. Pedroli ◽  
Wilfried A.C. Maasdam ◽  
Jacobus M. Verstraten
Keyword(s):  
Sandy Soils

The Effects of Vertical Stress on the Liquefaction Potential Originated from Buildings in The Urban Areas

2020 ◽  
pp. 351-372
Author(s):  
Mehmet Ozcelik
Keyword(s):  
Urban Areas ◽  
Sandy Soils ◽  
Standard Penetration Test ◽  
Soil Liquefaction ◽  
Vertical Stress ◽  
Limited Information ◽  
Liquefaction Potential ◽  
Empirical Procedure ◽  
Seismic Forces

Main purpose of this paper is to study the influence of vertical stress on soil liquefaction in urban areas. The literature provides limited information on vertical stress analysis of multiple footings, and, as a result, there is no accurate way to account for the effect of the foundation depth on liquefaction. Additionally, practical methods do not exist for considering the interaction between the neighboring foundations vertical stress and seismic forces in the urban area. Vertical stress distribution was calculated in examining the soil liquefaction potential exhibited by building foundations as a case study. The vertical stresses were chosen randomly for some buildings with foundation depths of 3.00 m; 4.50 and 6.00 m at the Burkent site (Burdur-Turkey). The influence of 5-storey buildings on the liquefaction potential of sandy soils was evaluated in terms of the safety factor (FS) against liquefaction along soil profile depths for different earthquakes. Standard Penetration Test (SPT) results were used based on simplified empirical procedure.

Seismic Behavior of Saturated Sandy Soils: Case Study for the May 2003 Tsukidate Landslide in Japan

Landslides ◽  
2005 ◽  
pp. 157-164 ◽  
Author(s):  
Gonghui Wang ◽  
Kyoji Sassa ◽  
Hiroshi Fukuoka
Keyword(s):  
Seismic Behavior ◽  
Sandy Soils
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