A full-scale field study on mitigation of environmental ground vibrations by using open trenches

2021 ◽  
pp. 108070
Author(s):  
Onur Toygar ◽  
Deniz Ulgen
2021 ◽  
Vol 21 (2) ◽  
pp. 04020250
Author(s):  
Hamed Bayesteh ◽  
Mohammad Ali Fakharnia ◽  
Mahdi Khodaparast
Keyword(s):  

1997 ◽  
Vol 1997 (1) ◽  
pp. 707-712 ◽  
Author(s):  
Alan J. Mearns ◽  
Albert D. Venosa ◽  
Kenneth Lee ◽  
Michael Salazar

ABSTRACT A 14-week, large-scale field study in Delaware demonstrated that, on a moderately exposed sandy beach, nutrients, not oil-degrading microorganisms, were the primary factors limiting biodegradation. The results are reviewed in the context of lessons and guidelines for a full-scale bioremediation response.


2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Zhijun Zhou ◽  
Tao Yang ◽  
Haobo Fan

This paper presents the results from a full-scale field study on the 3 different types of cast-in-place piles: rotary drilling piles (RDPs), manual digging piles (MDPs), and impact drilling piles (IDPs), for a bridge construction project of Wuqi–Dingbian Expressway, in Shaanxi. The results indicate that under the similar conditions, MDP exhibits the largest bearing capacity (11000 kN) in the loess area, followed by RDP (9000 kN) and IDP (8000 kN). And all tested values exceed the estimated value (7797.9 KN), indicating that the calculation formula of bearing capacity recommended by the Chinese standard is safe and conservative. During the load transfer process, the axial force attenuation rate of the pile body increases with pile side resistance. The average attenuation rate of MDP is the largest (24.2%), followed by RDP (19.72%) and IDP (16.69%). The bearing characteristics of these test piles are mainly pile side resistance, but the manual digging method created the least amount of disturbance to the soil around the pile, and due to its hole wall being rough, this enhances the pile-soil interactions. Hole-forming methods mainly affect the exertion of pile side resistance compared with pile end resistance. In view of pile side resistance and pile end resistance not taking effect at the same time, degree of exertion of these 2 resistances should be considered when designing cast-in-place piles in loess areas, and different partial coefficients should be used.


Author(s):  
Rasul Jumabayevich Tojiyev ◽  
◽  
Elmurad Muhammadyakubovich Yunusaliev ◽  
Ibrohim Numanovich Abdullayev ◽  
◽  
...  

The existing basic methods of studying the propagation of seismic-explosive waves in various mining-geological and morphological conditions to assess the impact of explosions on buildings and structures are briefly outlined. The results of studying the effect of the influence of the terrain on seismic vibrations during the passage of seismic explosive waves in them are presented. The issues of organizing experiments in full-scale field conditions, the time of which entirely depends on the time of drilling and blasting operations, are highlighted, which significantly slows down the stages of design, construction and operation of buildings and structures. Along with various explosions, as well as existing expensive installations and stands that create artificial vibrations for buildings and structures, it is offered detonation method for creating vibrations in the ground, both in design and construction, so and in the operation of buildings and structures. The detonation method proposed by the authors for creating artificial ground vibrations using a gas detonation unit makes it possible to simplify and accelerate the experiments and reduces labour and material costs.


2015 ◽  
Vol 89 ◽  
pp. 244-253 ◽  
Author(s):  
Y.G. Tong ◽  
S.K. Tang ◽  
J. Kang ◽  
A. Fung ◽  
M.K.L. Yeung

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